make linter happy

In https://github.com/VictoriaMetrics/VictoriaMetrics/pull/10607 vmagent
metrics relabling debug UI has been refined. There are a few changes
that make sence in VMUI too:
- Rename "Labels" to "A time series" to highlight that a single
Prometheus time series can be provided in text format.
- Rename "Relabel Configs" to "Config". It should be clear from the page
contex what config is meant. Also there are links to documention.
- Add placeholder. It hints what could be placed into "A time series"
textarea.

.github/workflows/codeql-analysis-go.yml

@@ -54,14 +54,14 @@ jobs:
           restore-keys: go-artifacts-${{ runner.os }}-codeql-analyze-${{ steps.go.outputs.go-version }}-
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+        uses: github/codeql-action/init@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
         with:
           languages: go
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+        uses: github/codeql-action/autobuild@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+        uses: github/codeql-action/analyze@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
         with:
           category: 'language:go'

.github/workflows/vmui.yml

@@ -26,9 +26,7 @@ jobs:
   vmui-checks:
     name: VMUI Checks (lint, test, typecheck)
     permissions:
-      checks: write
       contents: read
-      pull-requests: read
     runs-on: ubuntu-latest
     steps:
       - name: Code checkout
@@ -70,12 +68,6 @@ jobs:
         env:
           VMUI_SKIP_INSTALL: true
 
-      - name: Annotate Code Linting Results
-        uses: ataylorme/eslint-annotate-action@d57a1193d4c59cbfbf3f86c271f42612f9dbd9e9  # 3.0.0
-        with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          report-json: app/vmui/packages/vmui/vmui-lint-report.json
-
       - name: Check overall status
         run: |
           echo "Lint status: ${{ steps.lint.outcome }}"

app/vmagent/remotewrite/client.go

@@ -151,17 +151,23 @@ func newHTTPClient(argIdx int, remoteWriteURL, sanitizedURL string, fq *persiste
 		}
 		tr.Proxy = http.ProxyURL(pu)
 	}
+
 	hc := &http.Client{
 		Transport: authCfg.NewRoundTripper(tr),
 		Timeout:   sendTimeout.GetOptionalArg(argIdx),
 	}
+	rwURL, err := url.Parse(remoteWriteURL)
+	if err != nil {
+		logger.Fatalf("BUG: cannot parse already parsed -remoteWrite.url=%q: %s", remoteWriteURL, err)
+	}
+	hc.Transport, rwURL = httputil.NewLoadBalancerTransport(hc.Transport, rwURL)
 	retryMaxIntervalFlag := retryMaxTime
 	if retryMaxInterval.String() != "" {
 		retryMaxIntervalFlag = retryMaxInterval
 	}
 	c := &client{
 		sanitizedURL:     sanitizedURL,
-		remoteWriteURL:   remoteWriteURL,
+		remoteWriteURL:   rwURL.String(),
 		authCfg:          authCfg,
 		awsCfg:           awsCfg,
 		fq:               fq,

app/vmalert/datasource/init.go

@@ -11,6 +11,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/vmalertutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
 )
 
@@ -94,6 +95,12 @@ func Init(extraParams url.Values) (QuerierBuilder, error) {
 		tr.MaxIdleConns = tr.MaxIdleConnsPerHost
 	}
 	tr.IdleConnTimeout = *idleConnectionTimeout
+	hc := &http.Client{Transport: tr}
+	datasourceURL, err := url.Parse(*addr)
+	if err != nil {
+		logger.Fatalf("BUG: cannot parse already parsed -datasource.url=%q: %s", *addr, err)
+	}
+	hc.Transport, datasourceURL = httputil.NewLoadBalancerTransport(tr, datasourceURL)
 
 	if extraParams == nil {
 		extraParams = url.Values{}
@@ -120,9 +127,9 @@ func Init(extraParams url.Values) (QuerierBuilder, error) {
 	}
 
 	return &Client{
-		c:                &http.Client{Transport: tr},
+		c:                hc,
 		authCfg:          authCfg,
-		datasourceURL:    strings.TrimSuffix(*addr, "/"),
+		datasourceURL:    strings.TrimSuffix(datasourceURL.String(), "/"),
 		appendTypePrefix: *appendTypePrefix,
 		queryStep:        *queryStep,
 		extraParams:      extraParams,

app/vmalert/remoteread/init.go

@@ -4,12 +4,14 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"net/url"
 	"time"
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/datasource"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/vmalertutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputil"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
 )
 
@@ -76,7 +78,13 @@ func Init() (datasource.QuerierBuilder, error) {
 		return nil, fmt.Errorf("failed to create transport for -remoteRead.url=%q: %w", *addr, err)
 	}
 	tr.IdleConnTimeout = *idleConnectionTimeout
+	c := &http.Client{Transport: tr}
+	rrURL, err := url.Parse(*addr)
+	if err != nil {
+		logger.Fatalf("BUG: cannot parse already parsed -remoteRead.url=%q: %s", *addr, err)
+	}
 
+	c.Transport, rrURL = httputil.NewLoadBalancerTransport(tr, rrURL)
 	endpointParams, err := flagutil.ParseJSONMap(*oauth2EndpointParams)
 	if err != nil {
 		return nil, fmt.Errorf("cannot parse JSON for -remoteRead.oauth2.endpointParams=%s: %w", *oauth2EndpointParams, err)
@@ -89,6 +97,5 @@ func Init() (datasource.QuerierBuilder, error) {
 	if err != nil {
 		return nil, fmt.Errorf("failed to configure auth: %w", err)
 	}
-	c := &http.Client{Transport: tr}
-	return datasource.NewPrometheusClient(*addr, authCfg, false, c), nil
+	return datasource.NewPrometheusClient(rrURL.String(), authCfg, false, c), nil
 }

app/vmalert/remotewrite/client.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"path"
 	"strings"
 	"sync"
@@ -111,12 +112,18 @@ func NewClient(ctx context.Context, cfg Config) (*Client, error) {
 	if cfg.Concurrency > 0 {
 		cc = cfg.Concurrency
 	}
+	hc := &http.Client{
+		Timeout:   *sendTimeout,
+		Transport: cfg.Transport,
+	}
+	rwURL, err := url.Parse(cfg.Addr)
+	if err != nil {
+		logger.Fatalf("cannot parse already parsed -remoteWrite.url=%q: %s", cfg.Addr, err)
+	}
+	hc.Transport, rwURL = httputil.NewLoadBalancerTransport(hc.Transport, rwURL)
 	c := &Client{
-		c: &http.Client{
-			Timeout:   *sendTimeout,
-			Transport: cfg.Transport,
-		},
-		addr:          strings.TrimSuffix(cfg.Addr, "/"),
+		c:             hc,
+		addr:          strings.TrimSuffix(rwURL.String(), "/"),
 		authCfg:       cfg.AuthCfg,
 		flushInterval: cfg.FlushInterval,
 		maxBatchSize:  cfg.MaxBatchSize,

app/vmalert/rule/web.go

@@ -75,10 +75,13 @@ type GroupAlerts struct {
 // ApiRule represents a Rule for web view
 // see https://github.com/prometheus/compliance/blob/main/alert_generator/specification.md#get-apiv1rules
 type ApiRule struct {
-	// State must be one of these under following scenarios
-	//  "pending": at least 1 alert in the rule in pending state and no other alert in firing ruleState.
-	//  "firing": at least 1 alert in the rule in firing state.
-	//  "inactive": no alert in the rule in firing or pending state.
+	// Rule state must be one of these under following scenarios:
+	//  "pending": at least 1 alert in the rule in pending state and no other alert in firing state. (only for alerting rules)
+	//  "firing": at least 1 alert in the rule in firing state. (only for alerting rules)
+	//  "inactive": rule's last evaluation was successful but no alert in the rule in firing or pending state. (only for alerting rules)
+	//  "unhealthy": rule's last evaluation was failed with error. (for both alerting and recording rules)
+	// 	"nomatch": rule's last evaluation was successful but no time series matched the rule's expression. (for both alerting and recording rules)
+	//  "ok": the recording rule's last evaluation was successful. (only for recording rules)
 	State string `json:"state"`
 	Name  string `json:"name"`
 	// Query represents Rule's `expression` field
@@ -237,6 +240,7 @@ func NewAlertAPI(ar *AlertingRule, a *notifier.Alert) *ApiAlert {
 }
 
 func (r *ApiRule) ExtendState() {
+	// if alerting rule already has alerts, then state is already set to either "pending" or "firing" and we don't need to change it
 	if len(r.Alerts) > 0 {
 		return
 	}

app/vmalert/web.go

@@ -115,7 +115,7 @@ func (rh *requestHandler) handler(w http.ResponseWriter, r *http.Request) bool {
 		}
 		WriteRule(w, r, rule)
 		return true
-	// current used by old vmalert UI and Grafana Alerts
+	// used by old vmalert UI
 	case "/vmalert/groups", "/rules":
 		rf, err := newRulesFilter(r)
 		if err != nil {
@@ -128,6 +128,8 @@ func (rh *requestHandler) handler(w http.ResponseWriter, r *http.Request) bool {
 			state = rf.states[0]
 			rf.states = rf.states[:1]
 		}
+		// enable extendedStates by default for vmalert UI
+		rf.extendedStates = true
 		lr := rh.groups(rf)
 		WriteListGroups(w, r, lr.Data.Groups, state)
 		return true
@@ -543,6 +545,8 @@ func (rh *requestHandler) groups(rf *rulesFilter) *listGroupsResponse {
 			if !groupFound && !strings.Contains(strings.ToLower(rule.Name), rf.search) {
 				continue
 			}
+			// extendedStates is used by the vmalert UI to extend the rule state with values such as "nomatch" and "unhealthy".
+			// those states are not supported by Grafana and not part of the Prometheus API spec yet
 			if rf.extendedStates {
 				rule.ExtendState()
 			}

app/vmalert/web.qtpl

@@ -130,9 +130,12 @@
                             data-bs-target="#item-{%s g.ID %}"
                         >
                             <span class="d-flex gap-2">
-                                {% if g.States["unhealthy"] > 0 %}<span class="badge bg-danger" title="Number of rules with status Error">{%d g.States["unhealthy"] %}</span> {% endif %}
-                                {% if g.States["nomatch"] > 0 %}<span class="badge bg-warning" title="Number of rules with status NoMatch">{%d g.States["nomatch"] %}</span> {% endif %}
-                                <span class="badge bg-success" title="Number of rules with status Ok">{%d g.States["ok"] %}</span>
+                                {% if g.States["inactive"] > 0 %}<span class="badge bg-light text-success border border-success" title="None of the alert instances is in a pending or firing state">{%d g.States["inactive"] %} inactive</span> {% endif %}
+                                {% if g.States["pending"] > 0 %}<span class="badge bg-warning text-dark" title="At least one alert instance is pending">{%d g.States["pending"] %} pending</span> {% endif %}
+                                {% if g.States["firing"] > 0 %}<span class="badge bg-danger" title="At least one alert instance is firing">{%d g.States["firing"] %} firing</span> {% endif %}
+                                {% if g.States["ok"] > 0 %}<span class="badge bg-success" title="Recording rule last evaluation succeeded">{%d g.States["ok"] %} ok</span>{% endif %}
+                                {% if g.States["unhealthy"] > 0 %}<span class="badge bg-danger" title="Last evaluation failed with an error">{%d g.States["unhealthy"] %} unhealthy</span> {% endif %}
+                                {% if g.States["nomatch"] > 0 %}<span class="badge bg-warning" title="Rule expression matched no time series">{%d g.States["nomatch"] %} nomatch</span> {% endif %}
                             </span>
                         </span>
                     </span>
@@ -169,7 +172,7 @@
                             <thead>
                                 <tr>
                                     <th scope="col" class="w-60">Rule</th>
-                                    <th scope="col" class="w-20" class="text-center" title="How many series were produced by the rule">Series</th>
+                                    <th scope="col" class="w-20" class="text-center" title="How many series were produced by the rule">Series Returned</th>
                                     <th scope="col" class="w-20" class="text-center" title="How many seconds ago rule was executed">Updated</th>
                                 </tr>
                             </thead>
@@ -188,8 +191,21 @@
                                                     {% else %}
                                                         <b>record:</b> {%s r.Name %}
                                                     {% endif %}
-                                                    |
+                                                    {% if r.State == "inactive" %}
+                                                        <span><a class="badge bg-success">{%s r.State %}</a></span>
+                                                    {% elseif  r.State == "pending" %}
+                                                        <span><a class="badge bg-warning">{%s r.State %}</a></span>
+                                                    {% elseif  r.State == "firing" %}
+                                                        <span><a class="badge bg-danger">{%s r.State %}</a></span>
+                                                    {% elseif  r.State == "ok" %}
+                                                        <span><a class="badge bg-success">{%s r.State %}</a></span>
+                                                    {% elseif  r.State == "unhealthy" %}
+                                                        <span><a class="badge bg-danger">{%s r.State %}</a></span>
+                                                    {% elseif  r.State == "nomatch" %}
+                                                        <span><a class="badge bg-warning">{%s r.State %}</a></span>
+                                                    {% endif %}
                                                     {%= seriesFetchedWarn(prefix, &r) %}
+                                                    |
                                                     <span><a target="_blank" href="{%s prefix+r.WebLink() %}">Details</a></span>
                                                 </div>
                                                 <div class="col-12">

app/vmselect/promql/binary_op.go

@@ -164,11 +164,11 @@ func newBinaryOpFunc(bf func(left, right float64, isBool bool) float64) binaryOp
 		left := bfa.left
 		right := bfa.right
 		op := bfa.be.Op
-		switch true {
-		case metricsql.IsBinaryOpCmp(op):
-			// Do not remove empty series for comparison operations,
-			// since this may lead to missing result.
-		default:
+		isCmpOp := metricsql.IsBinaryOpCmp(op)
+		if !isCmpOp {
+			// Do not remove empty series for comparison operations, since NaN can be an
+			// explicitly present sample value. In particular, `value != NaN` is true.
+			// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/150.
 			left = removeEmptySeries(left)
 			right = removeEmptySeries(right)
 		}
@@ -191,6 +191,14 @@ func newBinaryOpFunc(bf func(left, right float64, isBool bool) float64) binaryOp
 		isBool := bfa.be.Bool
 		fillLeft := bfa.be.FillLeft
 		fillRight := bfa.be.FillRight
+		// A NaN produced by a vector comparison denotes a filtered-out sample rather
+		// than an explicitly present NaN value. Drop it when this result is used as
+		// the right-hand side of another comparison.
+		// Note that filtered-out samples surviving as NaN inside other wrappers such as
+		// transform functions or arithmetic operations aren't detected, since such NaN
+		// is indistinguishable from an explicitly present NaN value there.
+		// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10018.
+		dropNaNRight := isCmpOp && isVectorComparisonExpr(bfa.be.Right)
 		for i, tsLeft := range left {
 			leftValues := tsLeft.Values
 			rightValues := right[i].Values
@@ -203,11 +211,16 @@ func newBinaryOpFunc(bf func(left, right float64, isBool bool) float64) binaryOp
 				b := rightValues[j]
 				leftIsNaN := math.IsNaN(a)
 				rightIsNaN := math.IsNaN(b)
-				// apply the fill value when either the left or right side is NaN, but not both.
+				// Both sides are NaN.
 				if leftIsNaN && rightIsNaN {
 					dstValues[j] = bf(a, b, isBool)
 					continue
 				}
+				if dropNaNRight && rightIsNaN && fillRight == nil {
+					dstValues[j] = nan
+					continue
+				}
+				// Apply the fill value when either the left or right side is NaN, but not both.
 				if leftIsNaN && fillLeft != nil {
 					a = fillLeft.N
 				}
@@ -223,6 +236,38 @@ func newBinaryOpFunc(bf func(left, right float64, isBool bool) float64) binaryOp
 	}
 }
 
+// isVectorComparisonExpr returns whether e is a comparison operation
+// with at least one non-scalar operand.
+func isVectorComparisonExpr(e metricsql.Expr) bool {
+	if re, ok := e.(*metricsql.RollupExpr); ok && re.Window == nil {
+		// Unwrap `(...) offset <d>` and `(...) @ <t>`, which do not change
+		// the shape of the result. Subqueries are left as is, since rollup
+		// functions skip NaN values on their own.
+		e = re.Expr
+	}
+	be, ok := e.(*metricsql.BinaryOpExpr)
+	if !ok || !metricsql.IsBinaryOpCmp(be.Op) {
+		return false
+	}
+	return !isScalarLikeExpr(be.Left) || !isScalarLikeExpr(be.Right)
+}
+
+// isScalarLikeExpr returns whether e always evaluates to a scalar value.
+func isScalarLikeExpr(e metricsql.Expr) bool {
+	switch e := e.(type) {
+	case *metricsql.NumberExpr, *metricsql.DurationExpr:
+		return true
+	case *metricsql.BinaryOpExpr:
+		return isScalarLikeExpr(e.Left) && isScalarLikeExpr(e.Right)
+	case *metricsql.FuncExpr:
+		switch strings.ToLower(e.Name) {
+		case "now", "pi", "scalar", "start", "end", "step", "time", "timezone_offset":
+			return true
+		}
+	}
+	return false
+}
+
 func adjustBinaryOpTags(be *metricsql.BinaryOpExpr, left, right []*timeseries) ([]*timeseries, []*timeseries, []*timeseries, error) {
 	if len(be.GroupModifier.Op) == 0 && len(be.JoinModifier.Op) == 0 {
 		if isScalar(left) {

app/vmselect/promql/exec_test.go

@@ -2994,6 +2994,136 @@ func TestExecSuccess(t *testing.T) {
 		resultExpected := []netstorage.Result{}
 		f(q, resultExpected)
 	})
+	t.Run(`compare_to_nan_left_vector_right_scalar`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != NaN`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{1000, 1200, 1400, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_non_nan_scalar_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != 1200`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{1000, nan, 1400, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_nan_vector_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != label_set(NaN, "foo", "bar")`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{1000, 1200, 1400, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_nan_scalar_comparison_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != (1 > 2)`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{1000, 1200, 1400, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_vector_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != (label_set(time(), "foo", "bar") > 100000)`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_vector_right_offset`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != ((label_set(time(), "foo", "bar") > 100000) offset 0s)`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_vector_left`, func(t *testing.T) {
+		// A missing sample on the left side results in NaN for every comparison
+		// operation, so no special handling is needed there.
+		t.Parallel()
+		q := `(label_set(time(), "foo", "bar") > 100000) != label_set(time(), "foo", "bar")`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_series_right_bool`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") == bool (label_set(time(), "foo", "bar") > 100000)`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_partially_empty_series_right`, func(t *testing.T) {
+		// Prometheus drops the timestamps filtered out by the comparison on the right.
+		// See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11100#issuecomment-4933952390.
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != (label_set(time(), "foo", "bar") * 2 > 2800)`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{nan, nan, nan, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_unlabeled_vector_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `sum(label_set(time(), "foo", "bar")) != (sum(label_set(time(), "foo", "bar")) > 100000)`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_series_right_with_fill_left`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != fill_left(0) (label_set(time(), "foo", "bar") > 100000)`
+		resultExpected := []netstorage.Result{}
+		f(q, resultExpected)
+	})
+	t.Run(`compare_to_empty_series_right_with_fill_right`, func(t *testing.T) {
+		t.Parallel()
+		q := `label_set(time(), "foo", "bar") != fill_right(0) (label_set(time(), "foo", "bar") > 100000)`
+		r := netstorage.Result{
+			MetricName: metricNameExpected,
+			Values:     []float64{1000, 1200, 1400, 1600, 1800, 2000},
+			Timestamps: timestampsExpected,
+		}
+		r.MetricName.Tags = []storage.Tag{{
+			Key:   []byte("foo"),
+			Value: []byte("bar"),
+		}}
+		resultExpected := []netstorage.Result{r}
+		f(q, resultExpected)
+	})
 	t.Run(`-1 < 2`, func(t *testing.T) {
 		t.Parallel()
 		q := `-1 < 2`

app/vmstorage/main.go

@@ -35,7 +35,10 @@ var (
 		"By default, or when set to 0, -maxBackfillAge equals to -retentionPeriod, e.g. it is unlimited within the configured retention. "+
 		"This can be useful for limiting ingestion of historical samples, for example, when older data has been moved to another storage tier. "+
 		"See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#retention")
-	vmselectAddr                  = flag.String("vmselectAddr", "", "TCP address to accept connections from vmselect services")
+	vmselectAddr = flag.String("vmselectAddr", "", "TCP address to listen for incoming connections from vmselect. "+
+		"When set, the node will be able to accept cluster-native vmselect RPC requests as if it were vmstorage. "+
+		"The tenant ID assigned to this node's data is controlled by -accountID and -projectID flags. "+
+		"See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#multi-tenancy")
 	vmselectDisableRPCCompression = flag.Bool("rpc.disableCompression", false, "Whether to disable compression of the data sent from vmstorage to vmselect. "+
 		"This reduces CPU usage at the cost of higher network bandwidth usage")
 	snapshotAuthKey   = flagutil.NewPassword("snapshotAuthKey", "authKey, which must be passed in query string to /snapshot* pages. It overrides -httpAuth.*")

app/vmui/packages/vmui/package.json

@@ -9,7 +9,7 @@
     "start": "vite",
     "start:playground": "cross-env PLAYGROUND=true npm run start",
     "build": "vite build",
-    "lint": "eslint --output-file vmui-lint-report.json --format json 'src/**/*.{ts,tsx}'",
+    "lint": "eslint --format stylish 'src/**/*.{ts,tsx}'",
     "lint:local": "eslint --ext .ts,.tsx -f stylish src",
     "lint:fix": "eslint 'src/**/*.{ts,tsx}' --fix",
     "copy-metricsql-docs": "cp ../../../../docs/MetricsQL.md src/assets/MetricsQL.md || true",

app/vmui/packages/vmui/src/components/Configurators/TimeRangeSettings/ExecutionControls/ExecutionControls.tsx

@@ -1,4 +1,4 @@
-import { FC, useEffect, useRef, useState } from "preact/compat";
+import { FC, useEffect, useRef } from "preact/compat";
 import { useTimeDispatch } from "../../../../state/time/TimeStateContext";
 import { getAppModeEnable } from "../../../../utils/app-mode";
 import Button from "../../../Main/Button/Button";
@@ -9,27 +9,38 @@ import classNames from "classnames";
 import Tooltip from "../../../Main/Tooltip/Tooltip";
 import useDeviceDetect from "../../../../hooks/useDeviceDetect";
 import useBoolean from "../../../../hooks/useBoolean";
+import { getMillisecondsFromDuration } from "../../../../utils/time";
+import { useSearchParams } from "react-router";
 
-interface AutoRefreshOption {
-  seconds: number
-  title: string
-}
-
-const delayOptions: AutoRefreshOption[] = [
-  { seconds: 0, title: "Off" },
-  { seconds: 1, title: "1s" },
-  { seconds: 2, title: "2s" },
-  { seconds: 5, title: "5s" },
-  { seconds: 10, title: "10s" },
-  { seconds: 30, title: "30s" },
-  { seconds: 60, title: "1m" },
-  { seconds: 300, title: "5m" },
-  { seconds: 900, title: "15m" },
-  { seconds: 1800, title: "30m" },
-  { seconds: 3600, title: "1h" },
-  { seconds: 7200, title: "2h" }
+const delayOptions = [
+  "Off",
+  "1s",
+  "2s",
+  "5s",
+  "10s",
+  "30s",
+  "1m",
+  "5m",
+  "15m",
+  "30m",
+  "1h",
+  "2h"
 ];
 
+const DEFAULT_OPTION = delayOptions[0];
+
+const MIN_REFRESH_MS = 1000;
+const MAX_REFRESH_MS = getMillisecondsFromDuration(delayOptions[delayOptions.length - 1]);
+const REFRESH_URL_PARAM = "refresh";
+
+const durationToMs = (dur: string | null) => {
+  return dur ? getMillisecondsFromDuration(dur) : 0;
+};
+
+const isValidDelay = (ms: number) => {
+  return ms >= MIN_REFRESH_MS && ms <= MAX_REFRESH_MS;
+};
+
 interface ExecutionControlsProps {
   tooltip: string;
   useAutorefresh?: boolean;
@@ -38,12 +49,14 @@ interface ExecutionControlsProps {
 
 export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAutorefresh, closeModal }) => {
   const { isMobile } = useDeviceDetect();
+  const [searchParams, setSearchParams] = useSearchParams();
 
   const dispatch = useTimeDispatch();
   const appModeEnable = getAppModeEnable();
-  const [autoRefresh, setAutoRefresh] = useState(false);
 
-  const [selectedDelay, setSelectedDelay] = useState<AutoRefreshOption>(delayOptions[0]);
+  const rawDelay = searchParams.get(REFRESH_URL_PARAM);
+  const msDelay = durationToMs(rawDelay);
+  const selectedDelay = isValidDelay(msDelay) ? rawDelay : DEFAULT_OPTION;
 
   const {
     value: openOptions,
@@ -52,11 +65,20 @@ export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAuto
   } = useBoolean(false);
   const optionsButtonRef = useRef<HTMLDivElement>(null);
 
-  const handleChange = (d: AutoRefreshOption) => {
-    if ((autoRefresh && !d.seconds) || (!autoRefresh && d.seconds)) {
-      setAutoRefresh(prev => !prev);
-    }
-    setSelectedDelay(d);
+  const handleChange = (dur: string) => () => {
+    setSearchParams(prev => {
+      const nextParams = new URLSearchParams(prev);
+      const ms = durationToMs(dur);
+
+      if (ms) {
+        nextParams.set(REFRESH_URL_PARAM, `${dur}`);
+      } else {
+        nextParams.delete(REFRESH_URL_PARAM);
+      }
+
+      return nextParams;
+    });
+
     handleCloseOptions();
   };
 
@@ -68,23 +90,19 @@ export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAuto
   };
 
   useEffect(() => {
-    const delay = selectedDelay.seconds;
+    const ms = durationToMs(selectedDelay);
     let timer: number;
-    if (autoRefresh) {
+
+    if (useAutorefresh && isValidDelay(ms)) {
       timer = setInterval(() => {
         dispatch({ type: "RUN_QUERY" });
-      }, delay * 1000) as unknown as number;
-    } else {
-      setSelectedDelay(delayOptions[0]);
+      }, ms) as unknown as number;
     }
-    return () => {
-      timer && clearInterval(timer);
-    };
-  }, [selectedDelay, autoRefresh]);
 
-  const createHandlerChange = (d: AutoRefreshOption) => () => {
-    handleChange(d);
-  };
+    return () => {
+      clearInterval(timer);
+    };
+  }, [selectedDelay, useAutorefresh]);
 
   return (
     <>
@@ -106,7 +124,7 @@ export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAuto
                 <span className="vm-mobile-option__icon"><RestartIcon/></span>
                 <div className="vm-mobile-option-text">
                   <span className="vm-mobile-option-text__label">Auto-refresh</span>
-                  <span className="vm-mobile-option-text__value">{selectedDelay.title}</span>
+                  <span className="vm-mobile-option-text__value">{selectedDelay}</span>
                 </div>
                 <span className="vm-mobile-option__arrow"><ArrowDownIcon/></span>
               </div>
@@ -139,7 +157,7 @@ export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAuto
                       )}
                       onClick={toggleOpenOptions}
                     >
-                      {selectedDelay.title}
+                      {selectedDelay}
                     </Button>
                   </div>
                 </Tooltip>
@@ -187,12 +205,12 @@ export const ExecutionControls: FC<ExecutionControlsProps> = ({ tooltip, useAuto
                 className={classNames({
                   "vm-list-item": true,
                   "vm-list-item_mobile": isMobile,
-                  "vm-list-item_active": d.seconds === selectedDelay.seconds
+                  "vm-list-item_active": d === selectedDelay
                 })}
-                key={d.seconds}
-                onClick={createHandlerChange(d)}
+                key={d}
+                onClick={handleChange(d)}
               >
-                {d.title}
+                {d}
               </div>
             ))}
           </div>

app/vmui/packages/vmui/src/pages/Relabel/index.tsx

@@ -72,7 +72,7 @@ const Relabel: FC = () => {
         <div className="vm-relabeling-header-configs">
           <TextField
             type="textarea"
-            label="Relabel configs"
+            label="Config"
             value={config}
             autofocus
             onChange={handleChangeConfig}
@@ -82,8 +82,9 @@ const Relabel: FC = () => {
         <div className="vm-relabeling-header__labels">
           <TextField
             type="textarea"
-            label="Labels"
+            label="A time series"
             value={labels}
+            placeholder="up{job=&quot;job_name&quot;,instance=&quot;host:port&quot;}"
             onChange={handleChangeLabels}
             onEnter={handleRunQuery}
           />
@@ -97,22 +98,22 @@ const Relabel: FC = () => {
             <Button
               variant="text"
               color="gray"
-              startIcon={<InfoIcon/>}
+              startIcon={<WikiIcon/>}
             >
               Relabeling cookbook
             </Button>
           </a>
           <a
             target="_blank"
-            href="https://docs.victoriametrics.com/victoriametrics/relabeling/"
+            href="https://docs.victoriametrics.com/victoriametrics/relabeling/#relabeling-stages"
             rel="help noreferrer"
           >
             <Button
               variant="text"
               color="gray"
-              startIcon={<WikiIcon/>}
+              startIcon={<InfoIcon/>}
             >
-              Documentation
+              Relabeling Stages
             </Button>
           </a>
           <Button

app/vmui/packages/vmui/src/utils/time.test.ts

@@ -1,6 +1,6 @@
 import { describe, it, expect } from "vitest";
 import dayjs from "dayjs";
-import { getNanoTimestamp, parseSupportedDuration } from "./time";
+import { getMillisecondsFromDuration, getNanoTimestamp, parseSupportedDuration } from "./time";
 
 describe("Time utils", () => {
   describe("getNanoTimestamp", () => {
@@ -82,4 +82,19 @@ describe("Time utils", () => {
       expect(parseSupportedDuration("   ")).toBeUndefined();
     });
   });
+
+  describe("getMillisecondsFromDuration", () => {
+    it("should convert valid durations to milliseconds", () => {
+      expect(getMillisecondsFromDuration("1s")).toBe(1000);
+      expect(getMillisecondsFromDuration("1.5s")).toBe(1500);
+      expect(getMillisecondsFromDuration("1m30s")).toBe(90000);
+      expect(getMillisecondsFromDuration("1h 30m")).toBe(5400000);
+      expect(getMillisecondsFromDuration("500ms")).toBe(500);
+    });
+
+    it("should return zero when duration cannot be parsed", () => {
+      expect(getMillisecondsFromDuration("garbage")).toBe(0);
+      expect(getMillisecondsFromDuration("")).toBe(0);
+    });
+  });
 });

app/vmui/packages/vmui/src/utils/time.ts

@@ -100,6 +100,10 @@ export const getSecondsFromDuration = (dur: string) => {
   return dayjs.duration(durObject).asSeconds();
 };
 
+export const getMillisecondsFromDuration = (dur: string): number => {
+  return getSecondsFromDuration(dur) * 1000;
+};
+
 const instantQueryViews = [DisplayType.table, DisplayType.code];
 export const getStepFromDuration = (dur: number, histogram?: boolean, displayType?: DisplayType): string => {
   if (displayType && instantQueryViews.includes(displayType)) return roundStep(dur);
@@ -276,4 +280,3 @@ export const getNanoTimestamp = (dateStr: string): bigint => {
   // Return the full timestamp in nanoseconds as a BigInt
   return BigInt(baseMs) * 1000000n + BigInt(extraNano);
 };
-

dashboards/victoriametrics-cluster.json

@@ -5136,6 +5136,110 @@
           ],
           "title": "Major page faults rate  ($instance)",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 0,
+            "y": 305
+          },
+          "id": 230,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "prometheus",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job_storage\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job_storage\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",

dashboards/victoriametrics.json

@@ -5181,6 +5181,110 @@
           ],
           "title": "Major page faults rate",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 12,
+            "y": 81
+          },
+          "id": 159,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "prometheus",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",
@@ -8742,4 +8846,4 @@
   "uid": "wNf0q_kZk",
   "version": 1,
   "weekStart": ""
-}
+}

dashboards/vm/victoriametrics-cluster.json

@@ -5137,6 +5137,110 @@
           ],
           "title": "Major page faults rate  ($instance)",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "victoriametrics-metrics-datasource",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 0,
+            "y": 305
+          },
+          "id": 230,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "victoriametrics-metrics-datasource",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job_storage\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job_storage\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",

dashboards/vm/victoriametrics.json

@@ -5182,6 +5182,110 @@
           ],
           "title": "Major page faults rate",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "victoriametrics-metrics-datasource",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 12,
+            "y": 81
+          },
+          "id": 159,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "victoriametrics-metrics-datasource",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",
@@ -8743,4 +8847,4 @@
   "uid": "wNf0q_kZk_vm",
   "version": 1,
   "weekStart": ""
-}
+}

dashboards/vm/vmagent.json

@@ -4581,6 +4581,110 @@
           ],
           "title": "Rows ignored for last 1h ($instance)",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "victoriametrics-metrics-datasource",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 12,
+            "y": 189
+          },
+          "id": 171,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "victoriametrics-metrics-datasource",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",

dashboards/vmagent.json

@@ -4580,6 +4580,110 @@
           ],
           "title": "Rows ignored for last 1h ($instance)",
           "type": "timeseries"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$ds"
+          },
+          "description": "Average duration of fsync system calls. Spikes or high latency indicates that storage I/O cannot keep up with the write rate, which may slow down data ingestion.\n\nIf this value is elevated:\n- Check disk-related metrics.\n- If using cloud storage, check IOPS and throughput limits.\n- If using NFS, check network performance, server resource usage, and any errors on the NFS server side.\n- Check for known bugs in the filesystem or kernel version being used.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "palette-classic"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "",
+                "axisPlacement": "auto",
+                "axisSoftMin": 0,
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 0,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 1,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "never",
+                "showValues": false,
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "links": [],
+              "mappings": [],
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "green",
+                    "value": 0
+                  }
+                ]
+              },
+              "unit": "s"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 12,
+            "x": 12,
+            "y": 189
+          },
+          "id": 171,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "max"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true,
+              "sortBy": "Last *",
+              "sortDesc": true
+            },
+            "tooltip": {
+              "hideZeros": true,
+              "mode": "multi",
+              "sort": "desc"
+            }
+          },
+          "pluginVersion": "12.2.0",
+          "targets": [
+            {
+              "datasource": {
+                "type": "prometheus",
+                "uid": "$ds"
+              },
+              "editorMode": "code",
+              "expr": "rate(vm_filestream_fsync_duration_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) / rate(vm_filestream_fsync_calls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])",
+              "format": "time_series",
+              "instant": false,
+              "legendFormat": "{{instance}}",
+              "refId": "A"
+            }
+          ],
+          "title": "Fsync avg duration ($instance)",
+          "type": "timeseries"
         }
       ],
       "title": "Troubleshooting",

deployment/docker/README.md

@@ -163,6 +163,8 @@ The list of alerting rules is the following:
   alerting rules related to [vmauth](https://docs.victoriametrics.com/victoriametrics/vmauth/) component;
 * [alerts-vmanomaly.yml](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/deployment/docker/rules/alerts-vmanomaly.yml):
   alerting rules related to [VictoriaMetrics Anomaly Detection](https://docs.victoriametrics.com/anomaly-detection/);
+* [alerts-vmbackupmanager.yml](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/deployment/docker/rules/alerts-vmbackupmanager.yml):
+  alerting rules related to [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/) component;
 
 Please, also see [how to monitor VictoriaMetrics installations](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#monitoring).
 ## Troubleshooting

deployment/docker/compose-vm-cluster.yml

@@ -3,7 +3,7 @@ services:
   #  It scrapes targets defined in --promscrape.config
   #  And forward them to --remoteWrite.url
   vmagent:
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     depends_on:
       - "vmauth"
     ports:
@@ -42,14 +42,14 @@ services:
   # vmstorage shards. Each shard receives 1/N of all metrics sent to vminserts,
   # where N is number of vmstorages (2 in this case).
   vmstorage-1:
-    image: victoriametrics/vmstorage:v1.147.0-cluster
+    image: victoriametrics/vmstorage:v1.148.0-cluster
     volumes:
       - strgdata-1:/storage
     command:
       - "--storageDataPath=/storage"
     restart: always
   vmstorage-2:
-    image: victoriametrics/vmstorage:v1.147.0-cluster
+    image: victoriametrics/vmstorage:v1.148.0-cluster
     volumes:
       - strgdata-2:/storage
     command:
@@ -59,7 +59,7 @@ services:
   # vminsert is ingestion frontend. It receives metrics pushed by vmagent,
   # pre-process them and distributes across configured vmstorage shards.
   vminsert-1:
-    image: victoriametrics/vminsert:v1.147.0-cluster
+    image: victoriametrics/vminsert:v1.148.0-cluster
     depends_on:
       - "vmstorage-1"
       - "vmstorage-2"
@@ -68,7 +68,7 @@ services:
       - "--storageNode=vmstorage-2:8400"
     restart: always
   vminsert-2:
-    image: victoriametrics/vminsert:v1.147.0-cluster
+    image: victoriametrics/vminsert:v1.148.0-cluster
     depends_on:
       - "vmstorage-1"
       - "vmstorage-2"
@@ -80,7 +80,7 @@ services:
   # vmselect is a query fronted. It serves read queries in MetricsQL or PromQL.
   # vmselect collects results from configured `--storageNode` shards.
   vmselect-1:
-    image: victoriametrics/vmselect:v1.147.0-cluster
+    image: victoriametrics/vmselect:v1.148.0-cluster
     depends_on:
       - "vmstorage-1"
       - "vmstorage-2"
@@ -90,7 +90,7 @@ services:
       - "--vmalert.proxyURL=http://vmalert:8880"
     restart: always
   vmselect-2:
-    image: victoriametrics/vmselect:v1.147.0-cluster
+    image: victoriametrics/vmselect:v1.148.0-cluster
     depends_on:
       - "vmstorage-1"
       - "vmstorage-2"
@@ -105,7 +105,7 @@ services:
   # read requests from Grafana, vmui, vmalert among vmselects.
   # It can be used as an authentication proxy.
   vmauth:
-    image: victoriametrics/vmauth:v1.147.0
+    image: victoriametrics/vmauth:v1.148.0
     depends_on:
       - "vmselect-1"
       - "vmselect-2"
@@ -119,7 +119,7 @@ services:
 
   # vmalert executes alerting and recording rules
   vmalert:
-    image: victoriametrics/vmalert:v1.147.0
+    image: victoriametrics/vmalert:v1.148.0
     depends_on:
       - "vmauth"
     ports:
@@ -129,6 +129,7 @@ services:
       - ./rules/alerts-health.yml:/etc/alerts/alerts-health.yml
       - ./rules/alerts-vmagent.yml:/etc/alerts/alerts-vmagent.yml
       - ./rules/alerts-vmalert.yml:/etc/alerts/alerts-vmalert.yml
+      - ./rules/alerts-vmbackupmanager.yml:/etc/alerts/alerts-vmbackupmanager.yml
     command:
       - "--datasource.url=http://vmauth:8427/select/0/prometheus"
       - "--datasource.basicAuth.username=foo"

deployment/docker/compose-vm-single.yml

@@ -3,7 +3,7 @@ services:
   #  It scrapes targets defined in --promscrape.config
   #  And forward them to --remoteWrite.url
   vmagent:
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     depends_on:
       - "victoriametrics"
     ports:
@@ -18,7 +18,7 @@ services:
   # VictoriaMetrics instance, a single process responsible for
   # storing metrics and serve read requests.
   victoriametrics:
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
     ports:
       - 8428:8428
       - 8089:8089
@@ -59,7 +59,7 @@ services:
 
   # vmalert executes alerting and recording rules
   vmalert:
-    image: victoriametrics/vmalert:v1.147.0
+    image: victoriametrics/vmalert:v1.148.0
     depends_on:
       - "victoriametrics"
       - "alertmanager"
@@ -70,6 +70,7 @@ services:
       - ./rules/alerts-health.yml:/etc/alerts/alerts-health.yml
       - ./rules/alerts-vmagent.yml:/etc/alerts/alerts-vmagent.yml
       - ./rules/alerts-vmalert.yml:/etc/alerts/alerts-vmalert.yml
+      - ./rules/alerts-vmbackupmanager.yml:/etc/alerts/alerts-vmbackupmanager.yml
     command:
       - "--datasource.url=http://victoriametrics:8428/"
       - "--remoteRead.url=http://victoriametrics:8428/"

deployment/docker/rules/alerts-vmagent.yml

@@ -10,7 +10,7 @@ groups:
     concurrency: 2
     rules:
       - alert: PersistentQueueIsDroppingData
-        expr: sum(increase(vm_persistentqueue_bytes_dropped_total[5m])) without (path) > 0
+        expr: sum(increase(vm_persistentqueue_bytes_dropped_total[5m])) without (path,name) > 0
         for: 10m
         labels:
           severity: critical
@@ -201,4 +201,4 @@ groups:
         annotations:
           summary: "Persistent Queue (url {{ $labels.url }}) of {{ $labels.instance }} (job:{{ $labels.job }}) will run out of space in 4 hours."
           description: "RemoteWrite destination ({{ $labels.url }}) is unavailable or unable to receive data in a timely manner, so the persistent queue size is growing. 
-            Once the available space is exhausted, some samples will be discarded and cause incident. Please check the health of remoteWrite destination ({{ $labels.url }})."
+            Once the available space is exhausted, some samples will be discarded and cause incident. Please check the health of remoteWrite destination ({{ $labels.url }})."

deployment/docker/rules/alerts-vmanomaly.yml

@@ -30,6 +30,35 @@ groups:
           summary: "Service {{ $labels.job }} is down on {{ $labels.instance }}"
           description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 5m"
 
+      - alert: SchedulerWorkerDown
+        expr: >
+          (vmanomaly_scheduler_alive{job=~".*vmanomaly.*"} == 0)
+          and on (job, instance, scheduler_alias, preset)
+          (sum(vmanomaly_scheduler_restarts_total{job=~".*vmanomaly.*"})
+          by (job, instance, scheduler_alias, preset) > 0)
+        for: 2m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Scheduler {{ $labels.scheduler_alias }} is down in {{ $labels.job }} ({{ $labels.instance }})"
+          description: |
+            Periodic scheduler {{ $labels.scheduler_alias }} from preset {{ $labels.preset }} has remained down for more than 2 minutes
+            after entering automatic recovery. The restart policy may be exhausted.
+            Check vmanomaly logs and the vmanomaly_scheduler_restarts_total metric for restart failures.
+
+      - alert: FrequentSchedulerRestarts
+        expr: >
+          sum(increase(vmanomaly_scheduler_restarts_total{job=~".*vmanomaly.*"}[15m]))
+          by (job, instance, scheduler_alias, preset) > 2
+        labels:
+          severity: warning
+        annotations:
+          summary: "Scheduler {{ $labels.scheduler_alias }} is restarting frequently in {{ $labels.job }} ({{ $labels.instance }})"
+          description: |
+            Scheduler {{ $labels.scheduler_alias }} from preset {{ $labels.preset }} had more than two restart attempts
+            during the last 15 minutes. The service may be self-healing, but repeated restarts indicate an unstable
+            scheduler, configuration, datasource, or runtime dependency. Check vmanomaly logs for the original failure.
+
       # default value of 900 Should be changed to the scrape_interval for pull metrics. For push metrics this should be the lowest fit_every or infer_every in your vmanomaly config.
       - alert: NoSelfMonitoringMetrics
         expr: >

deployment/docker/rules/alerts-vmbackupmanager.yml

@@ -0,0 +1,110 @@
+# File contains default list of alerts for vmbackupmanager.
+# The alerts below are just recommendations and may require some updates
+# and threshold calibration according to every specific setup.
+groups:
+  - name: vmbackupmanager
+    rules:
+      - alert: NoLatestBackupWithinLastDay
+        expr: |
+          (
+            vm_backup_last_success_at{type="latest"} == 0
+            and on(job, instance)
+            vm_app_uptime_seconds > 24 * 3600
+          )
+          or
+          (
+            vm_backup_last_success_at{type="latest"} > 0
+            and time() - vm_backup_last_success_at{type="latest"} > 24 * 3600
+          )
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "latest backup hasn't completed successfully for more than 1 day on \"{{ $labels.job }}\"(\"{{ $labels.instance }}\")"
+          description: >
+            vmbackupmanager on "{{ $labels.job }}"("{{ $labels.instance }}") hasn't completed the latest backup for more than 1 day.
+            Check error logs on vmbackupmanager for root cause.
+
+      - alert: NoHourlyBackupWithinLastDay
+        expr: |
+          (
+            vm_backup_last_success_at{type="hourly"} == 0
+            and on(job, instance)
+            vm_app_uptime_seconds > 24 * 3600
+          )
+          or
+          (
+            vm_backup_last_success_at{type="hourly"} > 0
+            and time() - vm_backup_last_success_at{type="hourly"} > 24 * 3600
+          )
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "hourly backup hasn't completed successfully for more than 1 day on \"{{ $labels.job }}\"(\"{{ $labels.instance }}\")"
+          description: >
+            vmbackupmanager on "{{ $labels.job }}"("{{ $labels.instance }}") hasn't completed an hourly backup for more than 1 day.
+            Check error logs on vmbackupmanager for root cause.
+
+      - alert: NoDailyBackupWithinLast3Days
+        expr: |
+          (
+            vm_backup_last_success_at{type="daily"} == 0
+            and on(job, instance)
+            vm_app_uptime_seconds > 3 * 24 * 3600
+          )
+          or
+          (
+            vm_backup_last_success_at{type="daily"} > 0
+            and time() - vm_backup_last_success_at{type="daily"} > 3 * 24 * 3600
+          )
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "daily backup hasn't completed successfully for more than 3 days on \"{{ $labels.job }}\"(\"{{ $labels.instance }}\")"
+          description: >
+            vmbackupmanager on "{{ $labels.job }}"("{{ $labels.instance }}") hasn't completed a daily backup for more than 3 days.
+            Check error logs on vmbackupmanager for root cause.
+
+      - alert: NoWeeklyBackupWithinLast14Days
+        expr: |
+          (
+            vm_backup_last_success_at{type="weekly"} == 0
+            and on(job, instance)
+            vm_app_uptime_seconds > 14 * 24 * 3600
+          )
+          or
+          (
+            vm_backup_last_success_at{type="weekly"} > 0
+            and time() - vm_backup_last_success_at{type="weekly"} > 14 * 24 * 3600
+          )
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "weekly backup hasn't completed successfully for more than 14 days on \"{{ $labels.job }}\"(\"{{ $labels.instance }}\")"
+          description: >
+            vmbackupmanager on "{{ $labels.job }}"("{{ $labels.instance }}") hasn't completed a weekly backup for more than 14 days.
+            Check error logs on vmbackupmanager for root cause.
+
+      - alert: NoMonthlyBackupWithinLast62Days
+        expr: |
+          (
+            vm_backup_last_success_at{type="monthly"} == 0
+            and on(job, instance)
+            vm_app_uptime_seconds > 62 * 24 * 3600
+          )
+          or
+          (
+            vm_backup_last_success_at{type="monthly"} > 0
+            and time() - vm_backup_last_success_at{type="monthly"} > 62 * 24 * 3600
+          )
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "monthly backup hasn't completed successfully for more than 62 days on \"{{ $labels.job }}\"(\"{{ $labels.instance }}\")"
+          description: >
+            vmbackupmanager on "{{ $labels.job }}"("{{ $labels.instance }}") hasn't completed a monthly backup for more than 62 days.
+            Check error logs on vmbackupmanager for root cause.

deployment/docker/vmanomaly/vmanomaly-integration/compose.yml

@@ -1,6 +1,6 @@
 services:
   vmagent:
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     depends_on:
       - "victoriametrics"
     ports:
@@ -14,7 +14,7 @@ services:
     restart: always
 
   victoriametrics:
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
     ports:
       - 8428:8428
     volumes:
@@ -40,7 +40,7 @@ services:
     restart: always
 
   vmalert:
-    image: victoriametrics/vmalert:v1.147.0
+    image: victoriametrics/vmalert:v1.148.0
     depends_on:
       - "victoriametrics"
     ports:
@@ -59,7 +59,7 @@ services:
       - '--external.alert.source=explore?orgId=1&left=["now-1h","now","VictoriaMetrics",{"expr": },{"mode":"Metrics"},{"ui":[true,true,true,"none"]}]'
     restart: always
   vmanomaly:
-    image: victoriametrics/vmanomaly:v1.29.7
+    image: victoriametrics/vmanomaly:v1.30.0
     depends_on:
       - "victoriametrics"
     ports:

deployment/docker/vmanomaly/vmanomaly-integration/vmanomaly_config.yml

@@ -1,16 +1,18 @@
 schedulers:
   periodic:
     infer_every: "1m"
-    fit_every: "1h"
-    fit_window: "2d" # 2d-14d based on the presence of weekly seasonality in your data
+    fit_every: "100w" # the online model keeps learning during inference
+    fit_window: "2w"
 
 models:
-  prophet:
-    class: "prophet"
-    args:
-      interval_width: 0.98
-      weekly_seasonality: False  # comment it if your data has weekly seasonality
-      yearly_seasonality: False
+  temporal_envelope:
+    class: "temporal_envelope"
+    queries: "all"
+    schedulers: "all"
+    seasonalities: ["hod_smooth", "dow_smooth"]
+    alpha: 0.005
+    loss_reactivity: 5
+    iqr_threshold: 2
 
 reader:
   datasource_url: "http://victoriametrics:8428/"
@@ -26,4 +28,4 @@ writer:
 monitoring:
   pull: # Enable /metrics endpoint.
     addr: "0.0.0.0"
-    port: 8490
+    port: 8490

docs/ai-tools/README.md

@@ -69,18 +69,21 @@ See more details at [VictoriaMetrics/mcp-victoriatraces](https://github.com/Vict
 REST API and documentation for AI-assisted anomaly detection, model management, and observability insights.
 
 Capabilities include:
-- Health Monitoring: Check `vmanomaly` server health and build information
-- Model Management: List, validate, and configure anomaly detection models (like `zscore_online`, `prophet`, and more)
-- Configuration Generation: Generate complete `vmanomaly` YAML configurations
-- Alert Rule Generation: Generate [`vmalert`](https://docs.victoriametrics.com/victoriametrics/vmalert/) [alerting rules](https://docs.victoriametrics.com/victoriametrics/vmalert/#alerting-rules) based on [anomaly score metrics](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score) to simplify alerting setup
-- Documentation Search: Full-text search across embedded `vmanomaly` documentation with fuzzy matching
+- Check `vmanomaly` health, build information, compatibility, and self-monitoring metrics
+- Inspect model schemas and validate model or complete service configurations
+- Profile sampled query results for trends, seasonalities, changepoints, gaps, and intermittent behavior
+- Run asynchronous autotune tasks and turn their results into data-driven model recommendations
+- Generate complete `vmanomaly` YAML configurations and [`vmalert`](https://docs.victoriametrics.com/victoriametrics/vmalert/) [alerting rules](https://docs.victoriametrics.com/victoriametrics/vmalert/#alerting-rules)
+- Search embedded `vmanomaly` documentation with fuzzy matching
 
 See more details at [VictoriaMetrics/mcp-vmanomaly](https://github.com/VictoriaMetrics/mcp-vmanomaly).
+# vmanomaly UI Copilot
+The vmanomaly UI includes an [AI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance) that can assist users with anomaly detection tasks, model configuration, and troubleshooting, changing the UI state based on user queries and providing actionable suggestions through automated data profiling and validation. The AI Copilot is powered by respective [MCP Server](#vmanomaly-mcp-server) and [Agent Skills](#agent-skills), enabling it to understand the context of the user's actions and provide relevant guidance.
 
 # Agent Skills
 
-[Agent skills](https://github.com/VictoriaMetrics/skills) help AI agents and automation tools understand, operate, 
-and troubleshoot VictoriaMetrics observability components, including metrics, logs, and traces.
+[Agent skills](https://github.com/VictoriaMetrics/skills) help AI agents and automation tools understand, operate,
+and troubleshoot VictoriaMetrics observability components, including metrics, logs, traces, and [`vmanomaly`](https://docs.victoriametrics.com/anomaly-detection/).
 
 These skills provide predefined workflows and capabilities such as:
 * Query metrics, logs, traces and alerts
@@ -89,6 +92,9 @@ These skills provide predefined workflows and capabilities such as:
 * Cardinality optimization 
 * Unused metric detection
 * Stream aggregation configuration
+* Build validated `vmanomaly` configurations from measured time-series characteristics (e.g., seasonality, changepoints, trends)
+* Query and operate the `vmanomaly` API
+* Review existing anomaly detection configurations against real data and identify false-positive or model-data fit issues
 
 To install the available skills for AI agents, run:
 ```sh
@@ -108,4 +114,4 @@ AI code assistants like Claude Code, OpenAI Codex, Gemini CLI, Qwen Code, and Op
 helps to monitor cost usage, analytics, performance, compliance and improves troubleshooting experience. All major
 AI coding tools support OpenTelemetry and can be easily integrated into VictoriaMetrics Observability Stack.
 Please see more details in [Vibe coding tools observability with VictoriaMetrics Stack and OpenTelemetry
-](https://victoriametrics.com/blog/vibe-coding-observability/).
+](https://victoriametrics.com/blog/vibe-coding-observability/).

docs/ai-tools/_index.md

@@ -9,6 +9,7 @@ tags:
   - metrics
   - logs
   - traces
+  - anomaly detection
   - AI
   - AI integration
   - agent

docs/anomaly-detection/CHANGELOG.md

@@ -14,6 +14,31 @@ aliases:
 ---
 Please find the changelog for VictoriaMetrics Anomaly Detection below.
 
+{{% collapse name="2026" open=true %}}
+
+## v1.30.0
+Released: 2026-07-23
+
+- FEATURE: Added univariate and multivariate online [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope) models for complex time-series profiles. They combine robust causal trend, compact calendar and learned holiday behavior, changepoint adaptation, residual prediction intervals, future-horizon forecasts, and optional cross-series dependency detection in bounded state.
+
+- FEATURE: Added asynchronous [`/api/v1/autotune/tasks`](https://docs.victoriametrics.com/anomaly-detection/components/models/#shared-asynchronous-autotune-workflow) endpoints and improved unsupervised tuning with model-capability-aware objectives, optional causal exact validation for online models, constrained alert-volume selection, fitted-state complexity tie-breaking, and frozen model-specific parameters.
+
+- FEATURE: Added `/api/v1/timeseries/characteristics` for bounded analysis of trend, calendar seasonality, changepoints, gaps, and intermittent or spiky behavior across sampled query results. This improves automated model selection and search-space suggestions in both agentic workflows and [AI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance)-backed [UI](https://docs.victoriametrics.com/anomaly-detection/ui/) experiments.
+
+- UI: Updated [vmanomaly UI](https://docs.victoriametrics.com/anomaly-detection/ui/) from [v1.7.2](https://docs.victoriametrics.com/anomaly-detection/ui/#v172) to [v1.8.0](https://docs.victoriametrics.com/anomaly-detection/ui/#v180). Notable mentions are model and query configuration, query prettification, fullscreen charts, out-of-date results alert and improved [AI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance) suggestion and cancellation behavior.
+
+- FEATURE: Made AI-assisted configuration more reliable with reusable [vmanomaly workflow skills](https://github.com/VictoriaMetrics/skills), data-aware model suggestions, protocol-safe cancellation and synchronized query, model, and anomaly-setting updates in [UI](https://docs.victoriametrics.com/anomaly-detection/ui/).
+
+- IMPROVEMENT: Fitted history can be retained as a stronger prior through `history_strength` argument, requiring a reduced number of observations (say 2 weeks for weekly seasonality) to be effective if the history window is a good indicator of "normal" data patterns. Models supported: `mad_online`, `zscore_online`, `quantile_online`.
+
+- IMPROVEMENT: Improved bounded datasource operation with optional ad-hoc series limits, stale-series lookback caps, and propagation of configured per-query sampling periods to models and autotune trials.
+
+- IMPROVEMENT: Added `reader.fetch_timeout` and `reader.processing_timeout` for [`VmReader`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#vm-reader) and [`VLogsReader`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#victorialogs-reader), allowing datasource reads and post-fetch processing to be tuned *independently* while preserving `reader.timeout` as the backward-compatible default for both phases.
+
+- BUGFIX: Fixed [backtesting runs](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#backtesting-scheduler) across multiple fit cycles and for auto-tuned online wrappers, preventing duplicate or missing predictions while retaining causal model updates and restoration of compatible legacy auto-tuned state.
+
+- BUGFIX: Prevented service shutdown after a [`PeriodicScheduler`](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler) worker dies by adding bounded restart attempts with backoff and exposing restart health through [startup metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#startup-metrics).
+
 ## v1.29.7
 Released: 2026-06-25
 
@@ -124,6 +149,10 @@ Released: 2026-01-12
 
 - BUGFIX: Restored expected behavior when `fit_every` equals `infer_every` in [`PeriodicScheduler`](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler) - now full data range `fit_window` is fetched for model trainings instead of a  last point from that interval.
 
+{{% /collapse %}}
+
+{{% collapse name="2025" %}}
+
 ## v1.28.3
 Released: 2025-12-17
 
@@ -395,6 +424,10 @@ Released: 2025-01-20
 - BUGFIX: Now [`VmReader`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#vm-reader) properly handles the cases where the number of queries processed in parallel (up to `reader.queries` cardinality) exceeds the default limit of 10 HTTP(S) connections, preventing potential data loss from discarded queries. The pool limit will automatically adjust to match `reader.queries` cardinality.
 - BUGFIX: Corrected the construction of write endpoints for cluster VictoriaMetrics `url`s (`tenant_id` arg is set) in `monitoring.push` [section configurations](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#push-config-parameters).
 
+{{% /collapse %}}
+
+{{% collapse name="2024" %}}
+
 ## v1.18.8
 Released: 2024-12-03
 
@@ -709,6 +742,10 @@ Released: 2024-01-15
 - IMPROVEMENT: Don't check /health endpoint, check the real /query_range or /import endpoints directly. Users kept getting problems with /health.
 - DEPRECATION: "health_path" param is deprecated and doesn't do anything in config ([reader](https://docs.victoriametrics.com/anomaly-detection/components/reader/#vm-reader), [writer](https://docs.victoriametrics.com/anomaly-detection/components/writer/#vm-writer), [monitoring.push](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#push-config-parameters)).
 
+{{% /collapse %}}
+
+{{% collapse name="2023" %}}
+
 
 ## v1.7.2
 Released: 2023-12-21
@@ -803,6 +840,12 @@ Released: 2023-01-23
 Released: 2023-01-06
 - BUGFIX: prophet model incorrectly predicted two points in case of only one
 
+{{% /collapse %}}
+
+{{% collapse name="2022" %}}
+
 ## v1.0.0-beta
 Released: 2022-12-08
 - First public release is available
+
+{{% /collapse %}}

docs/anomaly-detection/FAQ.md

@@ -125,7 +125,7 @@ Please refer to the [state restoration section](https://docs.victoriametrics.com
 
 ## Config hot-reloading
 
-`vmanomaly` supports [hot-reloading](https://docs.victoriametrics.com/anomaly-detection/components/#hot-reload) {{% available_from "v1.25.0" anomaly %}} to automatically reload configurations on config files changes. It can be enabled via the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments) and allows for configuration updates without explicit service restarts.
+`vmanomaly` supports [hot reload](https://docs.victoriametrics.com/anomaly-detection/components/#hot-reload) {{% available_from "v1.25.0" anomaly %}} to apply configuration-file changes automatically. Enable it with the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments) to update the service without an explicit restart.
 
 ## Environment variables
 
@@ -141,20 +141,31 @@ For information on migrating between different versions of `vmanomaly`, please r
 
 ## Choosing the right model for vmanomaly
 
-> {{% available_from "v1.28.3" anomaly %}} Try our [MCP Server](https://github.com/VictoriaMetrics/mcp-vmanomaly) to get AI-assisted recommendations on selecting the best model and its configuration for your use case. See [installation guide](https://github.com/VictoriaMetrics/mcp-vmanomaly#installation) for more details.
+Selecting the best model for `vmanomaly` depends on the data's nature and the [types of anomalies](https://victoriametrics.com/blog/victoriametrics-anomaly-detection-handbook-chapter-2/#categories-of-anomalies) to detect:
 
-Selecting the best model for `vmanomaly` depends on the data's nature and the [types of anomalies](https://victoriametrics.com/blog/victoriametrics-anomaly-detection-handbook-chapter-2/#categories-of-anomalies) to detect. For instance, [Z-score](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-z-score) is suitable for data without trends or seasonality, while more complex patterns might require models like [Prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet).
+- Use [Online MAD](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-mad) for simple, mostly stationary data with no-to-slow trend, when robustness to outliers is important.
+- Use [Online Z-score](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-z-score) for simple, light-tailed data where standard-deviation units are meaningful.
+- Use [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope) {{% available_from "v1.30.0" anomaly %}} for complex data with trends, calendar patterns, holidays, or persistent shifts. It is the preferred *online* alternative to Prophet (which will be deprecated in the future releases).
+- Use multivariate Temporal Envelope when normal relationships between aligned metrics matter. This should replace [Isolation Forest](https://docs.victoriametrics.com/anomaly-detection/components/models/#isolation-forest-multivariate) used in previous versions of `vmanomaly`, which will be deprecated in future releases.
+- Use [Prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) when Prophet-specific decomposition outputs, or offline batch behavior are required. Consider using Temporal Envelope instead, as it is more efficient and provides better results in most cases.
 
-Also, there is an option to auto-tune the most important (hyper)parameters of selected model class {{% available_from "v1.12.0" anomaly %}}, find [the details here](https://docs.victoriametrics.com/anomaly-detection/components/models/#autotuned).
+There is also an option to auto-tune the most important parameters of a selected model class {{% available_from "v1.12.0" anomaly %}}. {{% available_from "v1.30.0" anomaly %}} The asynchronous autotune API can first profile a bounded sample through `/api/v1/timeseries/characteristics`, then tune a shared concrete configuration through `/api/v1/autotune/tasks`. See the [autotune workflow](https://docs.victoriametrics.com/anomaly-detection/components/models/#shared-asynchronous-autotune-workflow).
 
 Please refer to [respective blogpost on anomaly types and alerting heuristics](https://victoriametrics.com/blog/victoriametrics-anomaly-detection-handbook-chapter-2/) for more details.
 
 Still not 100% sure what to use? We are [here to help](https://docs.victoriametrics.com/anomaly-detection/#get-in-touch).
 
-## Incorporating domain knowledge
+## Can AI help configure vmanomaly?
 
-> [!TIP]
-> {{% available_from "v1.28.3" anomaly %}} Try our [MCP Server](https://github.com/VictoriaMetrics/mcp-vmanomaly) to get AI-assisted recommendations on incorporating domain knowledge into your anomaly detection models. See [installation guide](https://github.com/VictoriaMetrics/mcp-vmanomaly#installation) for more details. {{% available_from "v1.29.0" anomaly %}} Connect MCP server to the [vmanomaly UI](https://docs.victoriametrics.com/anomaly-detection/ui/) to benefit from better response quality and tool access in the UI Copilot, which provides AI-assisted configuration generation and debugging capabilities. See the [UI documentation](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance) for instructions on how to set it up.
+Yes. The available tools serve different workflows:
+
+- [UI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance) provides interactive guidance and can apply query, model, and alerting changes in the UI.
+- The [vmanomaly MCP server](https://docs.victoriametrics.com/ai-tools/#vmanomaly-mcp-server) gives compatible AI clients access to live schemas, documentation, time-series characteristics, configuration validation, and autotune tasks.
+- [Agent skills](https://docs.victoriametrics.com/ai-tools/#agent-skills) provide repeatable workflows for investigating data and generating or reviewing `vmanomaly` and `vmalert` configurations.
+
+Treat AI-generated configuration as a proposal. Review it and validate it through the UI or with [`--dryRun`](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments) before deployment.
+
+## Incorporating domain knowledge
 
 Anomaly detection models can significantly improve when incorporating business-specific assumptions about the data and what constitutes an anomaly. `vmanomaly` supports various [business-side configuration parameters](https://docs.victoriametrics.com/anomaly-detection/components/models/#common-args) across all built-in models to **reduce [false positives](https://victoriametrics.com/blog/victoriametrics-anomaly-detection-handbook-chapter-1/#false-positive)** and **align model behavior with business needs**, for example:
 
@@ -298,7 +309,7 @@ Configuration above will produce N intervals of full length (`fit_window`=14d +
 
 ## Forecasting
 
-`vmanomaly` can generate future forecasts (e.g. using [ProphetModel](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) {{% available_from "v1.25.3" anomaly %}}), which is helpful for capacity planning, resource allocation, or trend analysis when the underlying data is complex and exceeds what inline MetricsQL queries, including [predict_linear](https://docs.victoriametrics.com/victoriametrics/metricsql/#predict_linear), can handle.
+`vmanomaly` can generate future forecasts using [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope) {{% available_from "v1.30.0" anomaly %}} or [ProphetModel](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) {{% available_from "v1.25.3" anomaly %}}. This is helpful for capacity planning, resource allocation, or trend analysis when the underlying data is complex and exceeds what inline MetricsQL queries, including [predict_linear](https://docs.victoriametrics.com/victoriametrics/metricsql/#predict_linear), can handle.
 
 > However, please note that this mode should be used with care, as the model will produce `yhat_{h}` (and probably `yhat_lower_{h}`, and `yhat_upper_{h}`) time series **for each timeseries returned by input queries and for each forecasting horizon specified in `forecast_at` argument, which can lead to a significant increase in the number of active timeseries in VictoriaMetrics TSDB**.
 
@@ -309,12 +320,12 @@ Here's an example of how to produce forecasts using `vmanomaly` and combine it w
 schedulers:
   periodic_5m:  # this scheduler will be used to produce anomaly scores each 5 minutes using "regular" simple model
     class: 'periodic'
-    fit_every: '30d'
+    fit_every: '100w'
     fit_window: '3d'
     infer_every: '5m'
   periodic_forecast:  # this scheduler will be used to produce forecasts each 24h using "daily" model
     class: 'periodic'
-    fit_every: '7d'
+    fit_every: '1000w'
     fit_window: '730d' # to fit the model on 2 years of data to account for seasonality and holidays
     infer_every: '24h'
 # https://docs.victoriametrics.com/anomaly-detection/components/reader/#vm-reader
@@ -356,20 +367,18 @@ models:
     quantiles: [0.25, 0.5, 0.75]  # to produce median and upper quartiles
     iqr_threshold: 2.0
 
-  prophet_1d:
-    class: 'prophet'
+  envelope_1d:
+    class: 'temporal_envelope'
     queries: ['disk_usage_perc_1d']
     schedulers: ['periodic_forecast']
     clip_predictions: True
     detection_direction: 'above_expected'  # as we are interested in spikes in capacity planning
     forecast_at: ['3d', '7d']  # this will produce forecasts for 3 and 7 days ahead
     provide_series: ['yhat', 'yhat_upper']  # to write forecasts back to VictoriaMetrics, omitting `yhat_lower` as it is not needed in this example
-    # other model params, yearly_seasonality may stay
-
-    # https://facebook.github.io/prophet/docs/quick_start#python-api
-    args:
-      interval_width: 0.98  # see https://facebook.github.io/prophet/docs/uncertainty_intervals
-      country_holidays: 'US'
+    seasonalities: [dow_smooth]
+    holidays:
+      countries: [US]
+      group: true
 # https://docs.victoriametrics.com/anomaly-detection/components/writer/#vm-writer
 writer:
   class: 'vm'
@@ -423,7 +432,7 @@ services:
   # ...
   vmanomaly:
     container_name: vmanomaly
-    image: victoriametrics/vmanomaly:v1.29.7
+    image: victoriametrics/vmanomaly:v1.30.0
     # ...
     restart: always
     volumes:
@@ -460,6 +469,8 @@ With the introduction of [online models](https://docs.victoriametrics.com/anomal
 - **Optimized resource utilization**: By spreading the computational load over time and reducing peak demands, online models make more efficient use of resources and inducing less data transfer from VictoriaMetrics TSDB, improving overall system performance.
 - **Faster convergence**: Online models can adapt {{% available_from "v1.23.0" anomaly %}} to changes in data patterns more quickly, which is particularly beneficial in dynamic environments where data characteristics may shift frequently. See `decay` argument description [here](https://docs.victoriametrics.com/anomaly-detection/components/models/#decay).
 
+{{% available_from "v1.30.0" anomaly %}} Online models expose a **common** `min_n_samples_seen` warmup: they continue learning, but emit `anomaly_score: 0` until enough observations have been seen. Online MAD, Z-score, and Seasonal Quantile also support `history_strength`, which retains fitted history as a stronger prior while inference continues to adapt the state.
+
 > {{% available_from "v1.24.0" anomaly %}} Online models are best used in conjunction with [stateful mode](https://docs.victoriametrics.com/anomaly-detection/components/settings/#state-restoration) to preserve the model state across service restarts. This allows the model to continue adapting to new data without losing previously learned patterns, thus avoiding the need for a full `fit` stage to start working again. {{% available_from "v1.28.1" anomaly %}} Additionally, setting [retention policies](https://docs.victoriametrics.com/anomaly-detection/components/settings/#retention) helps manage disk space or RAM used by periodical cleanup of old model instances.
 
 Here's an example of how we can switch from (offline) [Z-score model](https://docs.victoriametrics.com/anomaly-detection/components/models/#z-score) to [Online Z-score model](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-z-score):
@@ -641,7 +652,7 @@ options:
 Here’s an example of using the config splitter to divide configurations based on the `extra_filters` argument from the reader section:
 
 ```sh
-docker pull victoriametrics/vmanomaly:v1.29.7 && docker image tag victoriametrics/vmanomaly:v1.29.7 vmanomaly
+docker pull victoriametrics/vmanomaly:v1.30.0 && docker image tag victoriametrics/vmanomaly:v1.30.0 vmanomaly
 ```
 
 ```sh

docs/anomaly-detection/Migration.md

@@ -45,7 +45,7 @@ There are 2 types of compatibility to consider when migrating in stateful mode:
 
 | Group start | Group end | Compatibility | Notes |
 |---------|--------- |------------|-------|
-| [v1.29.1](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1291) | [v1.29.7](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1297) | Fully Compatible | - |
+| [v1.29.1](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1291) | [v1.30.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1300) | Fully Compatible | v1.30.0 adds new [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope) model state without changing the compatibility of existing model and data artifacts. |
 | [v1.28.7](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1287) | [v1.29.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1290) | Partially compatible* | Dumped models of class [prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) and [seasonal quantile](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-seasonal-quantile) have problems with loading to [v1.29.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1290) due to dropped `pytz` library. **Upgrading directly from v1.28.7 to [v1.29.1](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1291) with a fix is suggested** |
 | [v1.26.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1262) | [v1.28.7](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1287) | Fully Compatible | [v1.28.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1280) introduced [rolling](https://docs.victoriametrics.com/anomaly-detection/components/models/#rolling-models) model class drop in favor of [online](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models) models (`rolling_quantile` and `std` models), however, it does not impact compatibility, as artifacts were not produced by default for rolling models. Also, offline `mad` and `zscore` models are redirecting to their respective online counterparts since [v1.28.4](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1284). |
 | [v1.25.3](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1253) | [v1.26.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1270) | Partially Compatible* | [v1.25.3](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1253) introduced `forecast_at` argument for base [univariate](https://docs.victoriametrics.com/anomaly-detection/components/models/#univariate-models) and `Prophet` [models](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet), however, itself remains backward-reversible from newer states like [v1.26.2](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1262), [v1.27.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1270). (All models except `isolation_forest_multivariate` class will be dropped) |

docs/anomaly-detection/QuickStart.md

@@ -132,7 +132,7 @@ Below are the steps to get `vmanomaly` up and running inside a Docker container:
 1. Pull Docker image:
 
 ```sh
-docker pull victoriametrics/vmanomaly:v1.29.7
+docker pull victoriametrics/vmanomaly:v1.30.0
 ```
 
 2. Create the license file with your license key.
@@ -152,7 +152,7 @@ docker run -it \
     -v ./license:/license \
     -v ./config.yaml:/config.yaml \
     -p 8490:8490 \
-    victoriametrics/vmanomaly:v1.29.7 \
+    victoriametrics/vmanomaly:v1.30.0 \
     /config.yaml \
     --licenseFile=/license \
     --loggerLevel=INFO \
@@ -169,7 +169,7 @@ docker run -it \
     -e VMANOMALY_DATA_DUMPS_DIR=/tmp/vmanomaly/data \
     -e VMANOMALY_MODEL_DUMPS_DIR=/tmp/vmanomaly/models \
     -p 8490:8490 \
-    victoriametrics/vmanomaly:v1.29.7 \
+    victoriametrics/vmanomaly:v1.30.0 \
     /config.yaml \
     --licenseFile=/license \
     --loggerLevel=INFO \
@@ -182,7 +182,7 @@ services:
   # ...
   vmanomaly:
     container_name: vmanomaly
-    image: victoriametrics/vmanomaly:v1.29.7
+    image: victoriametrics/vmanomaly:v1.30.0
     # ...
     restart: always
     volumes:
@@ -245,7 +245,7 @@ Before deploying, check the correctness of your configuration validate config fi
 
 ### Example
 
-Here is an example of a config file that will run the [Prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) model on `vm_cache_entries` metric, with periodic scheduler that runs inference every minute and fits the model every day. The model will be trained on the last 2 weeks of data each time it is (re)fitted. The model will produce `anomaly_score`, `yhat`, `yhat_lower`, and `yhat_upper` [series](https://docs.victoriametrics.com/anomaly-detection/components/models/#vmanomaly-output) for debugging purposes. The model will be timezone-aware and will use cyclical encoding for the hour of the day and day of the week seasonality.
+Here is an example of a config file that runs the online [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope) model on a CPU metric. The scheduler runs inference every five minutes and performs a full refit only every 100 weeks; between refits the model updates causally from each inference batch. The initial fit uses four weeks of data. The model produces `anomaly_score`, `yhat`, `yhat_lower`, and `yhat_upper` [series](https://docs.victoriametrics.com/anomaly-detection/components/models/#vmanomaly-output) for debugging, and its hour-of-day and day-of-week profiles follow the query timezone and daylight-saving-time changes.
 
 ```yaml
 settings:
@@ -260,38 +260,30 @@ settings:
     # scheduler: INFO
     # reader: INFO
     # writer: INFO
-    model.prophet: WARNING
+    model.online.temporal_envelope: WARNING
 
 schedulers:
-  1d_5m:
+  100w_5m:
     # https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler
     class: 'periodic'
     infer_every: '5m'
     scatter_infer_jobs: true
-    fit_every: '1d'
+    # Temporal Envelope learns online between full refits.
+    fit_every: '100w'
     fit_window: '4w'
 
 models:
-  # https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet
-  prophet_model:
-    class: 'prophet'
+  # https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope
+  temporal_envelope_model:
+    class: 'temporal_envelope'
+    queries: ['cpu_user']
+    schedulers: ['100w_5m']
     provide_series: ['anomaly_score', 'yhat', 'yhat_lower', 'yhat_upper']  # for debugging
-    tz_aware: True  # set to True if your data is timezone-aware, to deal with DST changes correctly
-    tz_use_cyclical_encoding: True
-    tz_seasonalities: # intra-day + intra-week seasonality
-      - name: 'hod'  # intra-day seasonality, hour of the day
-        fourier_order: 4  # keep it 3-8 based on intraday pattern complexity
-        prior_scale: 10
-      - name: 'dow'  # intra-week seasonality, time of the week
-        fourier_order: 2  # keep it 2-4, as dependencies are learned separately for each weekday
-    compression:  # available since v1.28.1
-      window: "30m"               # downsample 5m data into 30m intervals before fitting
-      agg_method: "mean"          # use mean aggregation within each window
-      adjust_boundaries: true     # adjust confidence intervals after downsampling
-    # inner model args (key-value pairs) accepted by
-    # https://facebook.github.io/prophet/docs/quick_start#python-api
-    args:
-      interval_width: 0.98  # see https://facebook.github.io/prophet/docs/uncertainty_intervals
+    seasonalities: ['hod_smooth', 'dow_smooth']
+    alpha: 0.005  # trend reactivity; try 0.0025-0.02
+    loss_reactivity: 5  # try 1-5; lower values reduce the influence of spikes
+    iqr_threshold: 2  # try 1-4 to adjust data-driven interval width
+    min_n_samples_seen: 16
 
 reader:
   class: 'vm'  # use VictoriaMetrics as a data source
@@ -299,6 +291,7 @@ reader:
   datasource_url: "https://play.victoriametrics.com/" # [YOUR_DATASOURCE_URL]
   tenant_id: '0:0'
   sampling_period: "5m"
+  tz: 'UTC'  # set the IANA timezone that defines local calendar patterns, e.g. 'America/New_York'
   series_processing_batch_size: 8  # number of time series to process together while preparing data for fit or infer stages
   queries:
     # define your queries with MetricsQL - https://docs.victoriametrics.com/victoriametrics/metricsql/
@@ -317,7 +310,7 @@ writer:
 
 ### UI
 
-{{% available_from "v1.26.0" anomaly %}} `vmanomaly`'s built-in web UI can be used for prototyping and interactive experimenting to produce vmanomaly's and vmalert's configuration files. Please refer to the [UI documentation](https://docs.victoriametrics.com/anomaly-detection/ui/) for detailed instructions and examples. {{% available_from "v1.29.0" anomaly %}} Connect MCP server to the UI to benefit from better response quality and tool access in the UI Copilot, which provides AI-assisted configuration generation and debugging capabilities. See the [UI documentation](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance) for instructions on how to set it up.
+{{% available_from "v1.26.0" anomaly %}} `vmanomaly`'s built-in web UI supports prototyping and interactive generation of `vmanomaly` and `vmalert` configuration files. See the [UI documentation](https://docs.victoriametrics.com/anomaly-detection/ui/) for instructions and examples. For optional AI-assisted workflows, use the [UI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance), connect the [vmanomaly MCP server](https://docs.victoriametrics.com/ai-tools/#vmanomaly-mcp-server), or follow the published [agent skills](https://docs.victoriametrics.com/ai-tools/#agent-skills).
 
 ![vmanomaly-ui-overview](vmanomaly-ui-overview.webp)
 > [!TIP]
@@ -409,7 +402,7 @@ For optimal service behavior, consider the following tweaks when configuring `vm
 
 - Set up **state restoration** {{% available_from "v1.24.0" anomaly %}} to resume from the last known state for long-term stability. This is controlled by the `settings.restore_state` boolean [arg](https://docs.victoriametrics.com/anomaly-detection/components/settings/#state-restoration).
 
-- Set up **config hot-reloading** {{% available_from "v1.25.0" anomaly %}} to automatically reload configurations on config files changes. This can be enabled via the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments) and allows for configuration updates without explicit service restarts.
+- Set up **configuration hot reload** {{% available_from "v1.25.0" anomaly %}} to apply configuration-file changes automatically. Enable it with the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments) to update the service without an explicit restart.
 
 **Schedulers**:
 - Configure the **inference frequency** in the [scheduler](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/) section of the configuration file.

docs/anomaly-detection/README.md

@@ -58,7 +58,7 @@ Get started with VictoriaMetrics Anomaly Detection by following our guides and i
 
 - **Quickstart**: Learn how to quickly set up `vmanomaly` by following the [Quickstart Guide](https://docs.victoriametrics.com/anomaly-detection/quickstart/).
 - **UI**: Explore anomaly detection configurations through the [vmanomaly UI](https://docs.victoriametrics.com/anomaly-detection/ui/).
-- **MCP**: Allow AI to assist you in generating service and alerting configurations, answering questions, planning migration with the [MCP Server](https://github.com/VictoriaMetrics/mcp-vmanomaly). Find the setup guide how to setup and use it [here](https://github.com/VictoriaMetrics/mcp-vmanomaly?tab=readme-ov-file#installation).
+- **AI-assisted setup (optional)**: Use the [UI Copilot](https://docs.victoriametrics.com/anomaly-detection/ui/#ai-assistance), [vmanomaly MCP server](https://docs.victoriametrics.com/ai-tools/#vmanomaly-mcp-server), or [agent skills](https://docs.victoriametrics.com/ai-tools/#agent-skills) to inspect time-series characteristics, select and autotune models, and generate validated configurations.
 - **Integration**: Integrate anomaly detection into your existing observability stack. Find detailed steps [here](https://docs.victoriametrics.com/anomaly-detection/guides/guide-vmanomaly-vmalert/).
 - **Anomaly Detection Presets**: Enable anomaly detection on predefined sets of metrics. Learn more [here](https://docs.victoriametrics.com/anomaly-detection/presets/).
 

docs/anomaly-detection/Self-monitoring.md

@@ -135,6 +135,8 @@ These alerting rules complements the [dashboard](#grafana-dashboard) to monitor
 `vmanomaly-health` alerting group:
 - **`TooManyRestarts`**: Triggers if an instance restarts more than twice within 15 minutes, suggesting the process might be crashlooping and needs investigation.
 - **`ServiceDown`**: Alerts if an instance is down for more than 5 minutes, indicating a service outage.
+- **`SchedulerWorkerDown`**: {{% available_from "v1.30.0" anomaly %}} Alerts when an individual periodic scheduler remains down for more than 2 minutes after automatic recovery attempts. This catches partial service failures that a process-level `ServiceDown` alert cannot detect.
+- **`FrequentSchedulerRestarts`**: {{% available_from "v1.30.0" anomaly %}} Warns when an individual scheduler has more than two restart attempts within 15 minutes. A single successful self-heal does not alert, while repeated attempts indicate a flapping scheduler or dependency.
 - **`ProcessNearFDLimits`**: Alerts when the number of available file descriptors falls below 100, which could lead to severe degradation if the limit is exhausted.
 - **`TooHighCPUUsage`**: Alerts when CPU usage exceeds 90% for a continuous 5-minute period, indicating possible resource exhaustion and the need to adjust resource allocation or load.
 - **`TooHighMemoryUsage`**: Alerts when RAM usage exceeds 85% for a continuous 5-minute period and the need to adjust resource allocation or load.

docs/anomaly-detection/UI.md

@@ -20,13 +20,13 @@ aliases:
 
 ## Introduction
 
-{{% available_from "v1.26.0" anomaly %}} `vmanomaly` is shipped with a built-in [vmui-like](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui) [UI](https://en.wikipedia.org/wiki/Graphical_user_interface) that provides an intuitive interface for rapid exploration of how anomaly detection models, their configurations and included domain knowledge impacts the results of anomaly detection, before such configurations are deployed in production.
+{{% available_from "v1.26.0" anomaly %}} `vmanomaly` includes a built-in [vmui-like](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui) [UI](https://en.wikipedia.org/wiki/Graphical_user_interface) for exploring queries, comparing anomaly detection models, and tuning model or domain settings before production deployment.
 
 ![vmanomaly-ui-overview](vmanomaly-ui-overview.webp)
 
 ## Accessing the UI
 
-The UI is available at `http://<vmanomaly-host>:8490` by default, however, the port can be changed in `server` [section](https://docs.victoriametrics.com/anomaly-detection/components/server/) of the [configuration file](https://docs.victoriametrics.com/anomaly-detection/components/) using the `port` parameter:
+The UI is available at `http://<vmanomaly-host>:8490` by default. Change the port with `server.port` in the [configuration file](https://docs.victoriametrics.com/anomaly-detection/components/):
 
 ```yaml
 server:
@@ -39,7 +39,7 @@ For impactful parameters please refer to [optimize resource usage](#optimize-res
 
 ## Playgrounds
 
-To start exploring the UI, you can use embedded demo with preconfigured queries and models down below on public playgrounds (VictoriaMetrics, VictoriaLogs and VictoriaTraces):
+Try the UI with preconfigured queries and models in the public VictoriaMetrics, VictoriaLogs, and VictoriaTraces playgrounds:
 
 {{% collapse name="Playground on VictoriaMetrics Datasource" %}}
 
@@ -151,10 +151,11 @@ users:
 Then, on [settings panel](#settings-panel) of the UI, set the URLs accordingly, also check the option to forward auth headers to the datasource:
 
 ![vmanomaly-ui-sections-settings](vmanomaly-ui-sections-settings.webp)
+{class="w-50 mx-auto"}
 
 ### Pre-configured Datasource
 
-{{% available_from "v1.28.2" anomaly %}} It is possible to disable the datasource selectors from UI (e.g. at purpose to serve internal teams) by using pre-configured one with respective environment variables at `vmanomaly` startup:
+{{% available_from "v1.28.2" anomaly %}} For a shared deployment with a fixed datasource, set these environment variables at `vmanomaly` startup. The UI then hides its datasource selectors:
 
 - `VMANOMALY_UI_DATASOURCE_URL` - to set static datasource URL
 - `VMANOMALY_UI_DATASOURCE_TYPE` - to set datasource type, supported options are `vm` for VictoriaMetrics, `vmlogs` for both VictoriaLogs and VictoriaTraces.
@@ -165,10 +166,9 @@ export VMANOMALY_UI_DATASOURCE_URL=https://play.victoriametrics.com/select/0:0/p
 export VMANOMALY_UI_DATASOURCE_TYPE=vm
 ```
 
-After that, start `vmanomaly` instance as usual, and the datasource selectors will be hidden from UI, while the pre-configured datasource will be used for all queries:
-![vmanomaly-ui-preconfigured-datasource-1](vmanomaly-ui-preconfigured-datasource-1.webp)
+Start `vmanomaly` as usual. All UI queries will use the configured datasource:
 
-![vmanomaly-ui-preconfigured-datasource-2](vmanomaly-ui-preconfigured-datasource-2.webp)
+![vmanomaly-ui-preconfigured-datasource-1](vmanomaly-ui-preconfigured-datasource-1.webp)
 
 ## Preset
 
@@ -193,9 +193,10 @@ The best applications of this mode are:
 
 ### What you can do with Copilot
 
-- **Ask questions** about any model (e.g. [Prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) or [Z-score](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-z-score) - parameters, trade-offs, when to use each)
+- **Ask questions** about any model (e.g. [Temporal Envelope](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope), [Prophet](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet), or [Z-score](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-z-score) - parameters, trade-offs, when to use each)
 - **Improve detection quality** - describe what's wrong ("too many false positives", "missing spikes") and Copilot reads the config, searches the docs, and proposes a validated configuration change to fix the issue.
 - **Get config suggestions inline** - suggestions appear as interactive cards with an explanation and a YAML diff; click **Apply** to write the change directly to your current settings, or **Decline** to keep the conversation going.
+- {{% available_from "v1.30.0" anomaly %}} **Profile and tune the real query** - with [mcp-vmanomaly](#mcp-tools-server) connected, Copilot can inspect bounded time-series characteristics, recommend an online model, start an asynchronous autotune task, and apply its validated query and model suggestions.
 
 ### How it works
 
@@ -212,7 +213,7 @@ AI Assistant is disabled by default; enable it with `VMANOMALY_COPILOT_ENABLED=t
 Supported providers and model formats:
 
 - **Anthropic** - set `ANTHROPIC_API_KEY`; model format: `anthropic:<model>`
-  - Examples: `claude-haiku-4-5`, `claude-sonnet-4-6`; see [full list](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison)
+  - Examples: `claude-haiku-4-5`, `claude-sonnet-5`; see [full list](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison)
 - **OpenAI** - set `OPENAI_API_KEY`; model format: `openai:<model>` or `openai-responses:<model>`
   - Examples: `gpt-5-mini`, `gpt-5.2`; see [full list](https://platform.openai.com/docs/models)
   - {{% available_from "v1.29.1" anomaly %}} OpenAI-compatible non-OpenAI providers are supported through `OPENAI_BASE_URL` + `OPENAI_API_KEY`
@@ -315,14 +316,14 @@ docker run -it --rm \
   -e VMANOMALY_MCP_SERVER_URL=http://mcp-vmanomaly:8081/mcp \
   -p 8080:8080 \
   -p 8490:8490 \
-  victoriametrics/vmanomaly:v1.29.7 \
+  victoriametrics/vmanomaly:v1.30.0 \
   vmanomaly_config.yaml
 ```
 
 
 ## UI Navigation
 
-The vmanomaly UI provides a user-friendly interface for exploring and configuring anomaly detection models. The main components of the UI include:
+The UI has four main areas:
 
 - [**Query Explorer**](#query-explorer): A vmui-like interface for typing and executing MetricsQL/LogsQL queries to visualize data.
 - [**Model Panel**](#model-panel): A form for editing anomaly detection model hyperparameters and applying domain knowledge settings.
@@ -331,7 +332,7 @@ The vmanomaly UI provides a user-friendly interface for exploring and configurin
 
 ### Query Explorer
 
-The Query Explorer provides a vmui-like interface for typing and executing MetricsQL/LogsQL queries to visualize data. 
+Use Query Explorer to run MetricsQL or LogsQL queries and visualize input data.
 
 ![vmanomaly-ui-sections-explore](vmanomaly-ui-sections-explore.webp)
 
@@ -345,23 +346,23 @@ Users can:
 
 ### Visualization Panel
 
-The Visualization Panel has 2 modes of displaying data - either raw queried data or data with detected anomalies, depending on the action taken in the Model Panel.
+The Visualization Panel displays either raw query results or model output, depending on the selected action.
 
-**Visualizations of the queried data** ("Execute Query" button)
+After selecting **Execute Query**:
 
 ![vmanomaly-ui-sections-plot-area-query-mode](vmanomaly-ui-sections-plot-area-query-mode.webp)
 
-> All the metrics are shown in a single plot, similar to vmui, with zooming and panning capabilities.
+All returned series appear in one vmui-like plot with zooming and panning.
 
-**Initial data with detected anomalies** ("Detect Anomalies" button)
+After selecting **Detect Anomalies**:
 
 ![vmanomaly-ui-sections-plot-area-detect-mode](vmanomaly-ui-sections-plot-area-detect-mode.webp)
 
-> The plot shows the queried data, **grouped by individual series**, iterated over legend, with the actual values (`y`) compared to the expected values (model predictions, `y_hat`), confidence intervals (`y_hat_lower`, `y_hat_upper`), and detected anomalies. The anomalies are marked with red circles, and hovering over them provides additional information such as the anomaly score and associated labels.
+The plot groups model output by input series and compares actual values (`y`) with predictions (`yhat`), confidence intervals (`yhat_lower`, `yhat_upper`), and detected anomalies. Hover over an anomaly marker to inspect its score and labels.
 
-Also, timeseries (such as `y`, `y_hat`, etc.) can be toggled on/off by clicking on the legend items.
+Toggle individual output series from the legend.
 
-{{% available_from "v1.29.2" anomaly %}} Seeing model [business-boundaries](https://docs.victoriametrics.com/anomaly-detection/faq/#incorporating-domain-knowledge), such as [detection direction](https://docs.victoriametrics.com/anomaly-detection/components/models/#detection-direction) and minimal deviation from expected ([absolute](https://docs.victoriametrics.com/anomaly-detection/components/models/#minimal-deviation-from-expected) and [relative](https://docs.victoriametrics.com/anomaly-detection/components/models/#minimal-relative-deviation-from-expected) combined) can be turned on with "business boundaries" toggle. Showing/hiding individual bands can be done by clicking on the respective legend items, while showing/hiding all business boundaries at once can be done with "business boundaries" toggle.
+{{% available_from "v1.29.2" anomaly %}} Enable **Business Boundaries** to overlay the configured [detection direction](https://docs.victoriametrics.com/anomaly-detection/components/models/#detection-direction) and combined [absolute](https://docs.victoriametrics.com/anomaly-detection/components/models/#minimal-deviation-from-expected) and [relative](https://docs.victoriametrics.com/anomaly-detection/components/models/#minimal-relative-deviation-from-expected) minimum-deviation bands. Toggle individual bands from the legend or all bands with the main control.
 
 [Back to UI navigation](#ui-navigation)
 
@@ -371,18 +372,18 @@ Also, timeseries (such as `y`, `y_hat`, etc.) can be toggled on/off by clicking
 
 The Model Panel provides:
 
-Parameters, such as "Fit Every", "Fit Window" and {{% available_from "v1.28.0" anomaly %}} "Infer Every" to imitate [production scheduling](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler), as well as overriding default [anomaly detection threshold](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score) (1.0).
+- Scheduling controls such as **Fit Every**, **Fit Window**, and {{% available_from "v1.28.0" anomaly %}} **Infer Every** for imitating [production scheduling](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler).
+- An override for the default [anomaly detection threshold](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score) of `1.0`.
+- Actions for running or canceling detection, downloading results, and exporting model configurations or example alerting rules.
 
-> {{% available_from "v1.28.0" anomaly %}} "Exact" mode checkbox is used in combination with "Infer Every" control for [online models](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models) such as `mad_online` or `quantile_online`, to provide unbiased estimates of how production scheduler would perform anomaly detection on incoming data streams. In "exact" mode, the model is updated exactly at every "infer every" micro-batch interval, at a cost of increased computation time.
+> {{% available_from "v1.28.0" anomaly %}} For [online models](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models), combine **Exact** mode with **Infer Every** to reproduce causal production micro-batches. This gives a more representative backtest at the cost of additional computation.
 
-Controls for running/canceling anomaly detection on the queried data, downloading the results as CSV/JSON, accessing and downloading the model configuration or example alerting rules in YAML format.
+A form-based menu configures model hyperparameters and domain knowledge:
 
-A form-based menu for finetuning model hyperparameters and applying domain knowledge settings:
-
-- Model type selection (e.g., rolling quantile, Prophet, etc.)
+- Model selection, for example Temporal Envelope or Online MAD.
 ![vmanomaly-ui-model-config-menu](vmanomaly-ui-model-config-menu.webp)
-- Wizard with **model-agnostic parameters** (e.g., detection direction, data range, scale, clipping, minimum deviation from expected, etc.) and **model-specific hyperparameters** for chosen model type (e.g., quantile and window steps for [rolling quantile](https://docs.victoriametrics.com/anomaly-detection/components/models/#rolling-quantile) model). {{% available_from "v1.27.0" anomaly %}} autocomplete of example parameters by hitting Tab key is supported.
-![vmanomaly-ui-model-config-wizard](vmanomaly-ui-model-config-wizard.webp)
+- A wizard with **model-agnostic settings** such as detection direction, data range, clipping, and minimum deviation, plus the selected model's hyperparameters. {{% available_from "v1.27.0" anomaly %}} Press **Tab** to autocomplete suggested values.
+  <a class="content-image d-flex justify-content-center" data-bs-target="#image-modal" data-bs-toggle="modal" href="/anomaly-detection/vmanomaly-ui-model-config-wizard.webp"><img alt="vmanomaly-ui-model-config-wizard" class="w-75 mx-auto" src="/anomaly-detection/vmanomaly-ui-model-config-wizard.webp" style="min-width: 0;" /></a>
 
 [Back to UI navigation](#ui-navigation)
 
@@ -397,6 +398,7 @@ The vmui-like "Settings" panel allows users to configure global settings and pre
 - {{% available_from "v1.27.0" anomaly %}} Auth Headers forwarding to datasource (VictoriaMetrics, VictoriaLogs). 
 
 ![vmanomaly-ui-sections-settings](vmanomaly-ui-sections-settings.webp)
+{class="w-50 mx-auto"}
 
 [Back to navigation](#ui-navigation)
 
@@ -585,6 +587,7 @@ Set the "Fit Every" and "Fit Window" parameters to control how often and over wh
 Tune the model hyperparameters and apply domain knowledge settings using the form-based menu in the Model Panel. See (i) tooltips for parameter descriptions and [model documentation](https://docs.victoriametrics.com/anomaly-detection/components/models/) link for recommended values and guidelines.
 
 ![vmanomaly-ui-model-config-wizard](vmanomaly-ui-model-config-wizard.webp)
+{class="w-75 mx-auto"}
 
 For example, for a **MAD online** [model](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-mad), that should be run on a query, returning per-mode CPU utilization (as fractions of 1, data range `[0, 1]`), where you are interested in capturing **spikes of at least 6% deviations** from expected behavior:
 
@@ -640,6 +643,31 @@ If the **results** look good and the **model configuration should be deployed in
 
 ## Changelog
 
+{{% collapse name="Release history" %}}
+
+### v1.8.0
+Released: 2026-07-23
+
+vmanomaly version: [v1.30.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1300)
+
+- FEATURE: UX Improvements, refreshed interface with clearer model and query forms, inline configuration previews, and fullscreen chart controls.
+
+- FEATURE: Server (production-running) models and queries can be accessed and selected from the UI, with a new "Queries" button, while model selection now includes a drop-down for server-configured scheduled models in model wizard.
+
+- IMPROVEMENT: Boosted [AI Copilot](#ai-assistance) stability and suggestions quality, aligned with MCP/skills toolset, and proper handling of canceled or incomplete tool calls.
+
+- IMPROVEMENT: Added query prettification and stable value formatting, including platform-aware keyboard-shortcut hints.
+
+- IMPROVEMENT: Results now visibly switch to an out-of-date state after the query, time range, or model configuration changes. The action updates to rerun detection and remains visible in both expanded and collapsed model views.
+
+- IMPROVEMENT: Chart range navigation commits one query on interaction completion instead of issuing many intermediate requests.
+
+- IMPROVEMENT: Compact consecutive identical [AI Copilot](#ai-assistance) tool calls, keep query/model/anomaly suggestions synchronized, and recover cleanly from canceled or incomplete tool calls.
+
+- BUGFIX: Fixed exact UI backtesting across multiple fit cycles and for auto-tuned online wrappers, preventing *duplicate or missing predictions* while retaining causal model updates and restoration of compatible legacy auto-tuned state.
+
+- BUGFIX: Kept automatic trailing-slash redirects for configured path prefixes and `/vmui` relative to the public origin, preventing internal backend hostnames from leaking through reverse proxies such as `vmauth`.
+
 ### v1.7.2
 Released: 2026-06-25
 
@@ -809,3 +837,5 @@ Released: 2025-10-02
 vmanomaly version: [v1.26.0](https://docs.victoriametrics.com/anomaly-detection/changelog/#v1260)
 
 Initial public release of the vmanomaly UI.
+
+{{% /collapse %}}

docs/anomaly-detection/components/README.md

@@ -6,7 +6,7 @@ build:
 sitemap:
   disable: true
 ---
-This chapter describes different components, that correspond to respective sections of a config to launch VictoriaMetrics Anomaly Detection (or simply [`vmanomaly`](https://docs.victoriametrics.com/anomaly-detection/) service:
+This chapter describes the configuration sections used to run VictoriaMetrics Anomaly Detection, or [`vmanomaly`](https://docs.victoriametrics.com/anomaly-detection/):
 
 - [Model(s) section](https://docs.victoriametrics.com/anomaly-detection/components/models/) - Required
 - [Reader section](https://docs.victoriametrics.com/anomaly-detection/components/reader/) - Required
@@ -16,9 +16,9 @@ This chapter describes different components, that correspond to respective secti
 - [Settings section](https://docs.victoriametrics.com/anomaly-detection/components/settings/) - Optional
 - [Server section](https://docs.victoriametrics.com/anomaly-detection/components/server/) - Optional
 
-> Once the service starts, automated config validation is performed {{% available_from "v1.7.2" anomaly %}}. Please see container logs for errors that need to be fixed to create fully valid config, visiting sections above for examples and documentation.
+> The service validates its configuration at startup{{% available_from "v1.7.2" anomaly %}}. Check the container logs for validation errors and use the sections above for field descriptions and examples.
 
-> Components' class {{% available_from "v1.13.0" anomaly %}} can be referenced by a short alias instead of a full class path - i.e. `model.zscore.ZscoreModel` becomes `zscore`, `reader.vm.VmReader` becomes `vm`, `scheduler.periodic.PeriodicScheduler` becomes `periodic`, etc. Please see according sections for the details.
+> Component classes{{% available_from "v1.13.0" anomaly %}} can be referenced by short aliases instead of full import paths. For example, `model.zscore.ZscoreModel` becomes `zscore`, `reader.vm.VmReader` becomes `vm`, and `scheduler.periodic.PeriodicScheduler` becomes `periodic`.
 
 > `preset` modes are available {{% available_from "v1.13.0" anomaly %}} for `vmanomaly`. Please find the guide [here](https://docs.victoriametrics.com/anomaly-detection/presets/).
 
@@ -32,7 +32,7 @@ Below, you will find an example illustrating how the components of `vmanomaly` i
 
 ## Example config
 
-Here's a minimalistic full config example, demonstrating many-to-many configuration (actual for [latest version](https://docs.victoriametrics.com/anomaly-detection/changelog/)):
+The following minimal configuration demonstrates current many-to-many model, query, and scheduler mapping:
 
 ```yaml
 settings:
@@ -52,7 +52,7 @@ schedulers:
     scatter_infer_jobs: true  # distribute infer jobs evenly across the infer interval to reduce synchronized bursts
     fit_every: "365d"  # how often to re-fit the models, for online models used effectively once, then they are updated with new data and won't require re-fit
     fit_window: "3d"  # how much historical data to use for fit stage
-    start_from: "00:00"  # start from specified time, i.e. 00:00 given timezone and do daily fits as `fit_every` is 1 day
+    start_from: "00:00"  # align the annual fit schedule to midnight in the configured timezone
     tz: "Europe/Kyiv"  # timezone to use for start_from
   periodic_offline_1w:
     class: 'periodic'
@@ -146,14 +146,14 @@ server:
 
 > This feature is better used in conjunction with [stateful service](https://docs.victoriametrics.com/anomaly-detection/components/settings/#state-restoration) to preserve the state of the models and schedulers between restarts and reuse what can be reused, thus avoiding unnecessary re-training of models, re-initialization of schedulers and re-reading of data.
 
-{{% available_from "v1.25.0" anomaly %}} Service supports hot reload of configuration files, which allows for automatic reloading of configurations on config files change without the need of explicit service restart. This can be enabled via the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments). `vmanomaly_config_reload_enabled` flag in [self-monitoring metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#startup-metrics) will be set to 1 (if enabled) or 0 (if disabled).
+{{% available_from "v1.25.0" anomaly %}} The service supports hot reload of configuration files, applying changes without an explicit restart. Enable it with the `--watch` [CLI argument](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments). The `vmanomaly_config_reload_enabled` [self-monitoring metric](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#startup-metrics) is `1` when hot reload is enabled and `0` otherwise.
 
 > [!NOTE]
 > {{% deprecated_from "v1.29.5" anomaly %}} File system event-based hot reload has been deprecated in favor of content-based polling with configurable `-configCheckInterval` due to reliability issues with Kubernetes ConfigMap symlink rotations and other filesystems where event delivery can be inconsistent. If you were using file system event-based hot reload, please switch to content-based polling by enabling `--watch` flag and configuring `-configCheckInterval` as needed.
 
 ### How it works
 
-It works by checking watched `.yml|.yaml` file contents in the specified files or directories on the configured interval `-configCheckInterval` (default is `30s`) {{% available_from "v1.29.5" anomaly %}}. When a content change is detected, the service will attempt to reload the configuration files after the existing debounce window, rebuild the [global config](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#global-configuration) and reinitialize the components. If the reload is successful, the `vmanomaly_config_reloads_total` metric will be incremented for `status="success"` label, otherwise it will be incremented with `status="failure"` label and a respective error message on config validation failure(s) will be logged.
+The service checks watched `.yml` and `.yaml` files at the `-configCheckInterval` interval (default `30s`){{% available_from "v1.29.5" anomaly %}}. When it detects a content change, it waits for the debounce window, rebuilds the [global configuration](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#global-configuration), and reinitializes the components. The `vmanomaly_config_reloads_total` metric is incremented with `status="success"` or `status="failure"`; validation failures are also logged.
 
 > If the reload fails, the service will log an error message indicating the reason for the failure, and the **previous configuration will remain active until a successful reload occurs** to preserve the service's stability. This means that if there are errors in the new configuration, the service will continue to operate with the last valid configuration until the issues are resolved.
 

docs/anomaly-detection/components/monitoring.md

@@ -304,7 +304,7 @@ For detailed guidance on configuring mTLS parameters such as `verify_tls`, `tls_
 <span style="white-space: nowrap;">`vmanomaly_available_memory_bytes`</span>
             </td>
             <td>Gauge</td>
-            <td>Virtual memory size in bytes, available to the process{{% available_from "v1.18.4" anomaly %}}.</td>
+            <td>Effective memory capacity available to the process in bytes{{% available_from "v1.18.4" anomaly %}}. The value honors cgroup limits when available, then process address-space limits, and otherwise reports host physical memory. It does not represent currently unused memory.</td>
         </tr>
         <tr>
             <td>
@@ -312,7 +312,7 @@ For detailed guidance on configuring mTLS parameters such as `verify_tls`, `tls_
 <span style="white-space: nowrap;">`vmanomaly_cpu_cores_available`</span>
             </td>
             <td>Gauge</td>
-            <td>Number of (logical) CPU cores available to the process{{% available_from "v1.18.4" anomaly %}}.</td>
+            <td>Effective CPU capacity available to the process{{% available_from "v1.18.4" anomaly %}}, constrained by host logical CPUs, process affinity, and cgroup quota. The value can be fractional when a fractional CPU quota is configured.</td>
         </tr>
         <tr>
             <td>
@@ -320,7 +320,7 @@ For detailed guidance on configuring mTLS parameters such as `verify_tls`, `tls_
 <span style="white-space: nowrap;">`vmanomaly_config_entities`</span>
             </td>
             <td>Gauge</td>
-            <td>Number of [sub-configs](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#sub-configuration) **available** (`{scope="total"}`) and **used** for particular [shard](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#horizontal-scalability) (`{scope="shard"}`) {{% available_from "v1.21.0" anomaly %}}</td>
+            <td>Number of [sub-configs](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#sub-configuration) **available** (`scope="total"`) and **used** by the current [shard](https://docs.victoriametrics.com/anomaly-detection/scaling-vmanomaly/#horizontal-scalability) (`scope="shard"`){{% available_from "v1.21.0" anomaly %}}, labeled by `preset` and `scope`.</td>
         </tr>
         <tr>
             <td>
@@ -352,6 +352,34 @@ For detailed guidance on configuring mTLS parameters such as `verify_tls`, `tls_
             <td>Gauge</td>
             <td>Timestamp of the last successful config [hot-reload](https://docs.victoriametrics.com/anomaly-detection/components/#hot-reload) in seconds since epoch {{% available_from "v1.25.1" anomaly %}}</td>
         </tr>
+        <tr>
+            <td>
+<span style="white-space: nowrap;">`vmanomaly_scheduler_alive`</span>
+            </td>
+            <td>Gauge</td>
+            <td>Whether the scheduler worker thread identified by `scheduler_alias` and `preset` is alive (`1`) or not (`0`) {{% available_from "v1.30.0" anomaly %}}.</td>
+        </tr>
+        <tr>
+            <td>
+<span style="white-space: nowrap;">`vmanomaly_scheduler_restarts_total`</span>
+            </td>
+            <td>Counter</td>
+            <td>Number of bounded scheduler restart attempts {{% available_from "v1.30.0" anomaly %}}, labeled by `scheduler_alias`, `preset`, and `status` (`success` or `failure`).</td>
+        </tr>
+        <tr>
+            <td>
+<span style="white-space: nowrap;">`vm_license_expires_at`</span>
+            </td>
+            <td>Gauge</td>
+            <td>License expiration time as a Unix timestamp in seconds. See the [licensing section](https://docs.victoriametrics.com/anomaly-detection/quickstart/#licensing) for example alerts.</td>
+        </tr>
+        <tr>
+            <td>
+<span style="white-space: nowrap;">`vm_license_expires_in_seconds`</span>
+            </td>
+            <td>Gauge</td>
+            <td>Time remaining until license expiration in seconds. See the [licensing section](https://docs.victoriametrics.com/anomaly-detection/quickstart/#licensing) for warning and critical alert examples.</td>
+        </tr>
     </tbody>
 </table>
 
@@ -425,7 +453,7 @@ Label names [description](#labelnames)
 
 `Histogram` (was `Summary`{{% deprecated_from "v1.17.0" anomaly %}})
             </td>
-            <td>The total time (in seconds) taken for data parsing at each `step` (json, dataframe) for the `query_key` query within the specified scheduler `scheduler_alias`, in the `vmanomaly` service running in `preset` mode.</td>
+            <td>The total time (in seconds) taken for data parsing at each `step` (`json` or `df`) for the `query_key` query within the specified scheduler `scheduler_alias`, in the `vmanomaly` service running in `preset` mode.</td>
             <td>
 
 `step`, `url`, `query_key`, `scheduler_alias`, `preset`
@@ -521,7 +549,7 @@ Label names [description](#labelnames)
             <td>
 
 <span style="white-space: nowrap;">`Histogram`</span> (was `Summary`{{% deprecated_from "v1.17.0" anomaly %}}) </td>
-            <td>The total time (in seconds) taken by model invocations during the `stage` (`fit`, `infer`, `fit_infer`), based on the results of the `query_key` query, for models of class `model_alias`, within the specified scheduler `scheduler_alias`, in the `vmanomaly` service running in `preset` mode.</td>
+            <td>The model-service stage duration in seconds for `fit`, `infer`, or combined `fit_infer` execution, based on the results of the `query_key` query for `model_alias`. Reader and writer I/O durations are reported by their respective metrics.</td>
             <td>
 
 `stage`, `query_key`, `model_alias`, `scheduler_alias`, `preset`
@@ -536,7 +564,7 @@ Label names [description](#labelnames)
 
 `Counter`
             </td>
-            <td>The number of datapoints accepted (excluding NaN or Inf values) by models of class `model_alias` from the results of the `query_key` query during the `stage` (`infer`, `fit_infer`), within the specified scheduler `scheduler_alias`, in the `vmanomaly` service running in `preset` mode.</td>
+            <td>The number of valid datapoints accepted by `model_alias`, excluding NaN and Inf values, during `fit`, `infer`, or combined `fit_infer` execution for the `query_key` query.</td>
             <td>
 
 `stage`, `query_key`, `model_alias`, `scheduler_alias`, `preset`
@@ -641,7 +669,7 @@ Label names [description](#labelnames)
         <tr>
             <td>
 
-<span style="white-space: nowrap;">`vmanomaly_writer_responses`</span> (named `vmanomaly_reader_response_count`{{% deprecated_from "v1.17.0" anomaly %}})
+<span style="white-space: nowrap;">`vmanomaly_writer_responses`</span> (named `vmanomaly_writer_response_count`{{% deprecated_from "v1.17.0" anomaly %}})
             </td>
             <td>
 
@@ -720,318 +748,215 @@ Label names [description](#labelnames)
 
 ### Labelnames
 
-* `stage` - stage of model - 'fit', 'infer' or 'fit_infer' for models that do it simultaneously, see [model types](https://docs.victoriametrics.com/anomaly-detection/components/models/#model-types).
+* `stage` - model execution stage: `fit`, `infer`, or `fit_infer` for a combined fit/inference scheduler run. See [model types](https://docs.victoriametrics.com/anomaly-detection/components/models/#model-types).
 * `query_key` - query alias from [`reader`](https://docs.victoriametrics.com/anomaly-detection/components/reader/) config section.
 * `model_alias` - model alias from [`models`](https://docs.victoriametrics.com/anomaly-detection/components/models/) config section{{% available_from "v1.10.0" anomaly %}}.
 * `scheduler_alias` - scheduler alias from [`schedulers`](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/) config section{{% available_from "v1.11.0" anomaly %}}.
 * `preset` - preset alias for [`preset`](https://docs.victoriametrics.com/anomaly-detection/presets/) mode of `vmanomaly`{{% available_from "v1.12.0" anomaly %}}.
 * `url` - writer or reader url endpoint.
-* `code` - response status code or `connection_error`, `timeout`.
-* `step` - json or dataframe reading step.
+* `code` - HTTP response status code or `connection_error`, `timeout`, `ssl_error`, or `io_error`.
+* `step` - reader parsing step: `json` or `df`.
 
 [Back to metric sections](#metrics-generated-by-vmanomaly)
 
 
 ## Logs generated by vmanomaly
 
-The `vmanomaly` service logs operations, errors, and performance for its components (service, reader, writer), alongside [self-monitoring metrics](#metrics-generated-by-vmanomaly) updates. Below is a description of key logs {{% available_from "v1.17.1" anomaly %}} for each component and the related metrics affected.
+The `vmanomaly` service logs important lifecycle, I/O, model, and recovery events alongside
+[self-monitoring metrics](#metrics-generated-by-vmanomaly). The fragments below are stable prefixes for
+recognizing log families, rather than byte-for-byte message contracts; entity values and exception details follow
+the prefix.
 
-`{{X}}` indicates a placeholder in the log message templates described below, which will be replaced with the appropriate entity during logging.
+By default, `vmanomaly` uses the `INFO` level. Use the global `--loggerLevel` command-line argument or
+`settings.logger_levels`{{% available_from "v1.30.0" anomaly %}} for prefix-based component overrides:
 
+```yaml
+settings:
+  logger_levels:
+    reader: DEBUG       # also applies to reader.vm, reader.vlogs, and other child loggers
+    writer.vm: ERROR
+    copilot: WARNING
+```
 
-> By default, `vmanomaly` uses the `INFO` logging level. You can change this by specifying the `--loggerLevel` argument. See command-line arguments [here](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments).
+More-specific prefixes override their parent. Changes limited to `settings.logger_levels` can be
+[hot-reloaded](https://docs.victoriametrics.com/anomaly-detection/components/#hot-reload) without restarting
+services. See [`settings.logger_levels`](https://docs.victoriametrics.com/anomaly-detection/components/settings/#logger-levels)
+and the [command-line arguments](https://docs.victoriametrics.com/anomaly-detection/quickstart/#command-line-arguments).
 
 - [Startup logs](#startup-logs)
-- [Reader  logs](#reader-logs)
+- [Reader logs](#reader-logs)
 - [Service logs](#service-logs)
-- [Writer  logs](#writer-logs)
+- [Writer logs](#writer-logs)
+- [Scheduler supervision logs](#scheduler-supervision-logs)
+- [Hot-reload logs](#hot-reload-logs)
+- [Persisted-state logs](#persisted-state-logs)
+- [Query server and task logs](#query-server-and-task-logs)
+- [AI Copilot logs](#ai-copilot-logs)
 
 
 ### Startup logs
 
-The `vmanomaly` service logs important information during the startup process. This includes checking for the license, validating configurations, and setting up schedulers, readers, and writers. Below are key logs that are generated during startup, which can help troubleshoot issues with the service's initial configuration or license validation.
+Startup logs summarize the version, license, effective storage mode, state restoration, process-pool mode,
+server addresses, hot-reload state, and active schedulers. The most useful prefixes are:
 
----
-
-**License check**. If no license key or file is provided, the service will fail to start and log an error message. If a license file is provided but cannot be read, the service logs a failure. Log messages:
-
-```text
-Please provide a license code using --license or --licenseFile arg, or as VM_LICENSE_FILE env. See https://victoriametrics.com/products/enterprise/trial/ to obtain a trial license.
-```
-
-```text
-failed to read file {{args.license_file}}: {{error_message}}
-```
-
----
-
-**Config validation**. If the service's configuration fails to load or does not meet validation requirements, an error message is logged and the service will exit. If the configuration is loaded successfully, a message confirming the successful load is logged. Log messages:
-
-```text
-Config validation failed, please fix these errors: {{error_details}}
-```
-
-```text
-Config has been loaded successfully.
-```
-
----
-
-**Model and data directory setup**. The service checks the environment variables `VMANOMALY_MODEL_DUMPS_DIR` and `VMANOMALY_DATA_DUMPS_DIR` to determine where to store models and data. If these variables are not set, models and data will be stored in memory. Please find the [on-disk mode details here](https://docs.victoriametrics.com/anomaly-detection/faq/#on-disk-mode). Log messages:
-
-```text
-Using ENV MODEL_DUMP_DIR=`{{model_dump_dir}}` to store anomaly detection models.
-```
-```text
-ENV MODEL_DUMP_DIR is not set. Models will be kept in RAM between consecutive `fit` calls.
-```
-```text
-Using ENV DATA_DUMP_DIR=`{{data_dump_dir}}` to store anomaly detection data.
-```
-```text
-ENV DATA_DUMP_DIR is not set. Models' training data will be stored in RAM.
-```
-
----
-
-**Scheduler and service initialization**. After configuration is successfully loaded, the service initializes [schedulers](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/) and services for each defined `scheduler_alias`. If there are issues with a specific scheduler (e.g., no models or queries found to attach to a scheduler), a warning is logged. When schedulers are initialized, the service logs a list of active schedulers. Log messages:
-
-```text
-Scheduler {{scheduler_alias}} wrapped and initialized with {{N}} model spec(s).
-```
-```text
-No model spec(s) found for scheduler `{{scheduler_alias}}`, skipping setting it up.
-```
-```text
-Active schedulers: {{list_of_schedulers}}.
-```
+- **License check**: `Please provide a license code`, `failed to read file`, and `Licensed to`.
+- **Config validation**: `Config validation failed`, `Config read failed`, and the fatal
+  `Config validation failed, shutting down`. Successful startup ends with `Config has been loaded successfully`.
+- **Model and data directory setup**: `Using ENV VMANOMALY_MODEL_DUMPS_DIR`,
+  `Using ENV VMANOMALY_DATA_DUMPS_DIR`, or their `is not set` in-memory variants. See
+  [on-disk mode](https://docs.victoriametrics.com/anomaly-detection/faq/#on-disk-mode).
+- **Scheduler and service initialization**: `Version:`, `Using process pool executor`, `Listening on`,
+  `Serving /metrics`, `Hot reload enabled`, and `Active schedulers`. `Process pool health check failed, falling
+  back to sequential mode` reports a safe runtime fallback. Per-scheduler wrapping and omitted empty schedulers are
+  `DEBUG` diagnostics.
 
 [Back to logging sections](#logs-generated-by-vmanomaly)
 
----
-
 ### Reader logs
 
-The `reader` component logs events during the process of querying VictoriaMetrics and retrieving the data necessary for anomaly detection. This includes making HTTP requests, handling SSL, parsing responses, and processing data into formats like DataFrames. The logs help to troubleshoot issues such as connection problems, timeout errors, or misconfigured queries.
+Reader logs cover endpoint checks, request splitting, network failures, response parsing, and coordination between
+queries used by the same model.
 
----
+**Starting a healthcheck request**. The reader probes each configured tenant and discovers
+`search.maxPointsPerTimeseries`. `Max points per timeseries set as` is a `DEBUG` diagnostic. A warning beginning
+`Could not get constraints` means the reader uses its built-in limit. Endpoint initialization errors identify SSL,
+connection, or timeout failures.
 
-**Starting a healthcheck request**. When the `reader` component initializes, it checks whether the VictoriaMetrics endpoint is accessible by sending a request for `_vmanomaly_healthcheck`. Log messages:
+**No data found (False)**. A fit/read range with no results uses this form, showing both local and Unix times:
 
 ```text
-[Scheduler {{scheduler_alias}}] Max points per timeseries set as: {{vm_max_datapoints_per_ts}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Reader endpoint SSL error {{url}}: {{error_message}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Reader endpoint inaccessible {{url}}: {{error_message}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Reader endpoint timeout {{url}}: {{error_message}}
+[Scheduler `SCHEDULER`] No data for query_key `QUERY` between LOCAL_START and LOCAL_END timezone TZ (START_EPOCH to END_EPOCH)
 ```
 
----
+Check the query, tenant, offsets, and selected range.
 
-
-**No data found (False)**. Based on [`query_from_last_seen_timestamp`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#config-parameters) VmReader flag. A `warning` log is generated when no data is found in the requested range. This could indicate that the query was misconfigured or that no new data exists for the time period requested. Log message format:
+**No unseen data found (True)**. An inference read whose timestamps were already processed uses:
 
 ```text
-[Scheduler {{scheduler_alias}}] No data between {{start_s}} and {{end_s}} for query "{{query_key}}"
+[Scheduler `SCHEDULER`] No unseen data for query_key `QUERY` between LOCAL_START and LOCAL_END, timezone TZ (START_EPOCH to END_EPOCH)
 ```
 
----
+This can be expected for overlapping scheduler windows, UI range navigation, or retries. Investigate when it
+persists while the datasource continues receiving newer samples.
 
-**No unseen data found (True)**. Based on [`query_from_last_seen_timestamp`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#config-parameters) VmReader flag. A `warning` log is generated when no new data is returned (i.e., all data has already been seen in a previous inference step(s)). This helps in identifying situations where data for inference has already been processed. Based on VmReader's `adjust` flag. Log messages:
+**Connection or timeout errors**. `Error querying URL for QUERY with PARAMS` includes the effective endpoint,
+query alias, request parameters, and nested SSL, connection, timeout, or I/O reason. The corresponding
+`vmanomaly_reader_responses` code is `ssl_error`, `connection_error`, `timeout`, or `io_error`.
 
-```text
-[Scheduler {{scheduler_alias}}] No unseen data between {{start_s}} and {{end_s}} for query "{{query_key}}"
-```
+At `DEBUG`, reader request lines start with `[Scheduler ...] GET` or `OPTIONS` and show the effective URL;
+token query parameters are redacted. `Cancellation requested for query` records cooperative cancellation.
+`Failed queries detected`, `Timeout waiting for queries`, and `Auto-marking pending queries as failed` identify
+coordination failures for related query sets.
 
----
+**Max datapoints warning**. `Query "QUERY" from START to END with step ... may exceed max datapoints per
+timeseries (LIMIT)` means the range will be split{{% available_from "v1.14.1" anomaly %}}. The message reports the
+effective limit and suggests reducing the range, increasing the step, or raising
+`search.maxPointsPerTimeseries`. A `DEBUG` message reports the resulting interval count.
 
-**Connection or timeout errors**. When the reader fails to retrieve data due to connection or timeout errors, a `warning` log is generated. These errors could result from network issues, incorrect query endpoints, or VictoriaMetrics being temporarily unavailable. Log message format:
+**Multi-tenancy warnings**. Messages starting with `The label vm_account_id was not found` indicate that a
+multitenant query lost routing labels. Preserve `vm_account_id` and `vm_project_id` through query aggregation; see
+[multitenancy support](https://docs.victoriametrics.com/anomaly-detection/components/writer/#multitenancy-support).
 
-```text
-[Scheduler {{scheduler_alias}}] Error querying {{query_key}} for {{url}}: {{error_message}}
-```
-
----
-
-**Max datapoints warning**. If the requested query range (defined by `fit_every` or `infer_every` [scheduler](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#parameters-1) args) exceeds the maximum number of datapoints allowed by VictoriaMetrics, a `warning` log is generated, and the request is split into multiple intervals{{% available_from "v1.14.1" anomaly %}}. This ensures that the request does not violate VictoriaMetrics’ constraints. Log messages:
-
-```text
-[Scheduler {{scheduler_alias}}] Query "{{query_key}}" from {{start_s}} to {{end_s}} with step {{step}} may exceed max datapoints per timeseries and will be split...
-```
-
----
-
-**Multi-tenancy warnings**. If the reader detects any issues related to missing or misconfigured multi-tenancy labels (a `warning` log{{% available_from "v1.16.2" anomaly %}} is generated to indicate the issue. See additional details [here](https://docs.victoriametrics.com/anomaly-detection/components/writer/#multitenancy-support). Log message format:
-
-```text
-The label vm_account_id was not found in the label set of {{query_key}}, but tenant_id='multitenant' is set in reader configuration...
-```
-
----
-
-**Metrics updated in read operations**. During successful query execution process, the following reader [self-monitoring metrics](#reader-behaviour-metrics) are updated:
-
-- `vmanomaly_reader_request_duration_seconds`: Records the time (in seconds) taken to complete the query request.
-  
-- `vmanomaly_reader_responses`: Tracks the number of response codes received from VictoriaMetrics.
-
-- `vmanomaly_reader_received_bytes`: Counts the number of bytes received in the response.
-
-- `vmanomaly_reader_response_parsing_seconds`: Records the time spent parsing the response into different formats (e.g., JSON or DataFrame).
-
-- `vmanomaly_reader_timeseries_received`: Tracks how many timeseries were retrieved in the query result.
-
-- `vmanomaly_reader_datapoints_received`: Counts the number of datapoints retrieved in the query result.
-
----
-
-**Metrics skipped in case of failures**. If an error occurs (connection or timeout), `vmanomaly_reader_received_bytes`, `vmanomaly_reader_timeseries_received`, and `vmanomaly_reader_datapoints_received` are not incremented because no valid data was received.
+**Metrics updated in read operations**. Requests update duration and response-code metrics even on handled
+failures. Bytes, time series, datapoints, and parsing durations are recorded only when those values were received
+or parsed. See [reader behaviour metrics](#reader-behaviour-metrics).
 
 [Back to logging sections](#logs-generated-by-vmanomaly)
 
 ### Service logs
 
-The `model` component (wrapped in service) logs operations during the fitting and inference stages for each model spec attached to particular [scheduler](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/) `scheduler_alias`. These logs inform about skipped runs, connection or timeout issues, invalid data points, and successful or failed model operations.
+The service logs `fit`, `infer`, and combined `fit_infer`/backtesting work for each model alias and scheduler.
+The `query_key` value may be a composite key containing source labels and an internal hash, rather than only the
+configured query alias.
 
----
+**Skipped runs**. Warnings start with `Skipping run for stage 'STAGE' for model 'MODEL'`. Common reasons are no
+fit or inference partition, no data to infer, no unseen valid data, a missing model instance or on-disk model, an
+unsupported exact-batch path, or no valid output. The service attempts fitting when at least one valid row exists;
+individual models may require more history and report their own error. Skips increment
+`vmanomaly_model_runs_skipped`.
 
-**Skipped runs**. When there are insufficient valid data points to fit or infer using a model, the run is skipped and a `warning` log is generated. This can occur when the query returns no new data or when the data contains invalid values (e.g., `NaN`, `INF`). The skipped run is also reflected in the `vmanomaly_model_runs_skipped` metric. Log messages:
+**Errors during model execution**. Errors start with `Error during stage 'STAGE' for model 'MODEL'` and include
+the composite query key and exception. They increment `vmanomaly_model_run_errors`.
 
-When there are insufficient valid data points (at least 1 for [online models](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models) and 2 for [offline models](https://docs.victoriametrics.com/anomaly-detection/components/models/#offline-models))
-```text
-[Scheduler {{scheduler_alias}}] Skipping run for stage 'fit' for model '{{model_alias}}' (query_key: {{query_key}}): Not enough valid data to fit: {{valid_values_cnt}}
-```
+**Model instance created during inference**. `Model instance 'MODEL' created ... during inference` is a `DEBUG`
+message for an online model cold start{{% available_from "v1.15.2" anomaly %}}.
 
-When all the received timestamps during an `infer` call have already been processed, meaning the [`anomaly_score`](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score) has already been produced for those points
-```text
-[Scheduler {{scheduler_alias}}] Skipping run for stage 'infer' for model '{{model_alias}}' (query_key: {{query_key}}): No unseen data to infer on.
-```
-When the model fails to produce any valid or finite outputs (such as [`anomaly_score`](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score))
-```text
-[Scheduler {{scheduler_alias}}] Skipping run for stage 'infer' for model '{{model_alias}}' (query_key: {{query_key}}): No (valid) datapoints produced.
-```
+**Successful model runs**. `Fitting on VALID/TOTAL valid datapoints` is emitted at `INFO`. At `DEBUG`,
+`Model ... fit completed`, `Inference ran in`, and `Fit-Infer ran in` report stage duration. Combined
+`fit_infer` is used by applicable backtesting/scheduler execution and is not a separate “rolling model” class.
 
----
-
-**Errors during model execution**. If the model fails to fit or infer data due to internal service errors or model spec misconfigurations, an `error` log is generated and the error is also reflected in the `vmanomaly_model_run_errors` metric. This can occur during both `fit` and `infer` stages. Log messages:
-```text
-[Scheduler {{scheduler_alias}}] Error during stage 'fit' for model '{{model_alias}}' (query_key: {{query_key}}): {{error_message}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Error during stage 'infer' for model '{{model_alias}}' (query_key: {{query_key}}): {{error_message}}
-```
-
----
-
-**Model instance created during inference**. In cases where an [online model](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models) instance is created during the inference stage (without a prior fit{{% available_from "v1.15.2" anomaly %}}), a `debug` log is produced. This helps track models that are created dynamically based on incoming data. Log messages:
-
-```text
-[Scheduler {{scheduler_alias}}] Model instance '{{model_alias}}' created for '{{query_key}}' during inference.
-```
----
-
-**Successful model runs**. When a model successfully fits, logs track the number of valid datapoints processed and the time taken for the operation. These logs are accompanied by updates to [self-monitoring metrics](#models-behaviour-metrics) like `vmanomaly_model_runs`, `vmanomaly_model_run_duration_seconds`, `vmanomaly_model_datapoints_accepted`, and `vmanomaly_model_datapoints_produced`. Log messages:
-
-For [non-rolling models](https://docs.victoriametrics.com/anomaly-detection/components/models/#non-rolling-models)
-```text
-[Scheduler {{scheduler_alias}}] Fitting on {{valid_values_cnt}}/{{total_values_cnt}} valid datapoints for "{{query_key}}" using model "{{model_alias}}".
-```
-```text
-[Scheduler {{scheduler_alias}}] Model '{{model_alias}}' fit completed in {{model_run_duration}} seconds for {{query_key}}.
-```
-For [rolling models](https://docs.victoriametrics.com/anomaly-detection/components/models/#rolling-models) (combined stage)
-```text
-[Scheduler {{scheduler_alias}}] Fit-Infer on {{datapoint_count}} points for "{{query_key}}" using model "{{model_alias}}".
-```
-
----
-
-**Metrics updated in model runs**. During successful fit or infer operations, the following [self-monitoring metrics](#models-behaviour-metrics) are updated for each run:
-
-- `vmanomaly_model_runs`: Tracks how many times the model ran (`fit`, `infer`, or `fit_infer`) for a specific `query_key`.
-
-- `vmanomaly_model_run_duration_seconds`: Records the total time (in seconds) for the model invocation, based on the results of the `query_key`.
-
-- `vmanomaly_model_datapoints_accepted`: The number of valid datapoints processed by the model during the run.
-
-- `vmanomaly_model_datapoints_produced`: The number of datapoints generated by the model during inference.
-
-- `vmanomaly_models_active`: Tracks the number of models currently **available for infer** for a specific `query_key`.
-
----
-
-**Metrics skipped in case of failures**. If a model run fails due to an error or if no valid data is available, the metrics such as `vmanomaly_model_datapoints_accepted`, `vmanomaly_model_datapoints_produced`, and `vmanomaly_model_run_duration_seconds` are not updated.
-
----
+**Metrics updated in model runs**. Successful stages update runs, duration, accepted/produced datapoints, and
+active-model gauges. Skips and failures update their respective counters; success-only values are not recorded for
+an unsuccessful stage. See [models behaviour metrics](#models-behaviour-metrics).
 
 [Back to logging sections](#logs-generated-by-vmanomaly)
 
 ### Writer logs
 
-The `writer` component logs events during the process of sending produced data (like `anomaly_score` [metrics](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score)) to VictoriaMetrics. This includes data preparation, serialization, and network requests to VictoriaMetrics endpoints. The logs can help identify issues in data transmission, such as connection errors, invalid data points, and track the performance of write requests.
+Writer logs cover serialization and delivery of produced series such as
+[`anomaly_score`](https://docs.victoriametrics.com/anomaly-detection/faq/#what-is-anomaly-score).
 
----
+**Starting a write request**. At `DEBUG`, `[Scheduler ...] POST URL with N datapoints, M bytes of payload`
+includes the composite query key and dataframe shape.
 
-**Starting a write request**. A `debug` level log is produced when the `writer` component starts the process of writing data to VictoriaMetrics. It includes details like the number of datapoints, bytes of payload, and the query being written. This is useful for tracking the payload size and performance at the start of the request. Log messages:
+**No valid data points**. `No valid datapoints to save for metric` includes the query key and original dataframe
+shape; no request is sent.
 
-```text
-[Scheduler {{scheduler_alias}}] POST {{url}} with {{N}} datapoints, {{M}} bytes of payload, for {{query_key}}
-```
+**Connection, timeout, or I/O errors**. `Cannot write N points for QUERY` ends with an SSL, connection, timeout,
+or I/O reason. A retriable connection failure first emits `Connection error while writing ... reinitializing
+session and retrying`; the final failed attempt is logged as an error.
 
----
+**Multi-tenancy warnings**. `The label vm_account_id was not found` means a `multitenant` writer will fall back to
+tenant `0:0`. `The label set for the metric ... contains multi-tenancy labels` means labels disagree with the
+configured single tenant. Preserve or align tenant labels and `writer.tenant_id`; see
+[multitenancy support](https://docs.victoriametrics.com/anomaly-detection/components/writer/#multitenancy-support).
 
-**No valid data points**. A `warning` log is generated if there are no valid datapoints to write (i.e., all are `NaN` or unsupported like `INF`). This indicates that the writer will not send any data to VictoriaMetrics. Log messages:
-
-```text
-[Scheduler {{scheduler_alias}}] No valid datapoints to save for metric: {{query_key}}
-```
-
----
-
-**Connection, timeout, or I/O errors**. When the writer fails to send data due to connection, timeout, or I/O errors, an `error` log is generated. These errors often arise from network problems, incorrect URLs, or VictoriaMetrics being unavailable. The log includes details of the failed request and the reason for the failure. Log messages:
-
-```text
-[Scheduler {{scheduler_alias}}] Cannot write {{N}} points for {{query_key}}: connection error {{url}} {{error_message}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Cannot write {{N}} points for {{query_key}}: timeout for {{url}} {{error_message}}
-```
-```text
-[Scheduler {{scheduler_alias}}] Cannot write {{N}} points for {{query_key}}: I/O error for {{url}} {{error_message}}
-```
-
----
-
-**Multi-tenancy warnings**. If the `tenant_id` is set to `multitenant` but the `vm_account_id` label is missing from the query result, or vice versa, a `warning` log is produced{{% available_from "v1.16.2" anomaly %}}. This helps in debugging label set issues that may occur due to the multi-tenant configuration - see [this section for details](https://docs.victoriametrics.com/anomaly-detection/components/writer/#multitenancy-support). Log messages:
-
-```text
-The label vm_account_id was not found in the label set of {{query_key}}, but tenant_id='multitenant' is set in writer...
-```
-```text
-The label set for the metric {{query_key}} contains multi-tenancy labels, but the write endpoint is configured for single-tenant mode (tenant_id != 'multitenant')...
-```
-
----
-
-**Metrics updated in write operations**. During the successful write process of *non-empty data*, the following [self-monitoring metrics](#writer-behaviour-metrics) are updated:
-
-- `vmanomaly_writer_request_duration_seconds`: Records the time (in seconds) taken to complete the write request.
-
-- `vmanomaly_writer_sent_bytes`: Tracks the number of bytes sent in the request.
-
-- `vmanomaly_writer_responses`: Captures the HTTP response code returned by VictoriaMetrics. In case of connection, timeout, or I/O errors, a specific error code (`connection_error`, `timeout`, or `io_error`) is recorded instead.
-
-- `vmanomaly_writer_request_serialize_seconds`: Records the time taken for data serialization.
-
-- `vmanomaly_writer_datapoints_sent`: Counts the number of valid datapoints that were successfully sent.
-
-- `vmanomaly_writer_timeseries_sent`: Tracks the number of timeseries sent to VictoriaMetrics.
-
-**Metrics skipped in case of failures**. If an error occurs (connection, timeout, or I/O error), only `vmanomaly_writer_request_duration_seconds` is updated with appropriate error code. 
+**Metrics updated in write operations**. Request duration is observed for successful and handled failed requests.
+`vmanomaly_writer_responses` records the HTTP status or `ssl_error`, `connection_error`, `timeout`, or `io_error`.
+Serialization duration and prepared time-series count may already be recorded before a failed request; sent bytes
+and datapoints are recorded only after a successful response. See [writer behaviour metrics](#writer-behaviour-metrics).
+
+[Back to logging sections](#logs-generated-by-vmanomaly)
+
+### Scheduler supervision logs
+
+Scheduler supervision{{% available_from "v1.30.0" anomaly %}} logs a dead worker, automatic restart, successful
+recovery, failed-attempt backoff, and removal after the retry limit. Stable prefixes include `Scheduler ... is not
+alive`, `Scheduler ... restarted successfully`, `restart attempt ... failed`, and `reached max restart attempts`.
+Correlate them with `vmanomaly_scheduler_alive` and `vmanomaly_scheduler_restarts_total`.
+
+[Back to logging sections](#logs-generated-by-vmanomaly)
+
+### Hot-reload logs
+
+Hot reload logs config-change detection, validation, staged service restart, success, and rollback. `Reload aborted
+– invalid config` keeps the current runtime unchanged; `Reload apply failed; attempting rollback` starts recovery.
+`Rollback failed` is critical and requests shutdown. A logger-only change emits `Applied component log level changes
+without restarting services`.
+
+[Back to logging sections](#logs-generated-by-vmanomaly)
+
+### Persisted-state logs
+
+With `settings.restore_state`, startup logs the stored/runtime version assessment, reusable components, required
+model or reader-data purges, and restored jobs/services. `Persisted state is incompatible` followed by `Dropping
+stored artifacts completely` indicates a full reset; missing or unreadable model files are reported separately.
+
+[Back to logging sections](#logs-generated-by-vmanomaly)
+
+### Query server and task logs
+
+The query server logs its listening address and datasource-proxy timeouts/failures. Background anomaly-detection
+and autotune failures use `Error in task` and `Error in autotune task`; canceled client requests may still leave a
+background raw query finishing cleanly.
+
+[Back to logging sections](#logs-generated-by-vmanomaly)
+
+### AI Copilot logs
+
+AI Copilot{{% available_from "v1.30.0" anomaly %}} reports whether it is initialized, disabled, misconfigured, or
+unable to mount. `Invalid Copilot request state` identifies an incomplete/canceled tool-call history, `Copilot
+request failed` identifies provider execution failure, and `MCP server unreachable` identifies unavailable MCP
+guidance tools.
 
 [Back to logging sections](#logs-generated-by-vmanomaly)

docs/anomaly-detection/components/reader.md

@@ -12,15 +12,14 @@ aliases:
   - /anomaly-detection/components/reader.html
 ---
 
-VictoriaMetrics Anomaly Detection (`vmanomaly`) has an input of Prometheus-compatible metrics from either [VictoriaMetrics](https://docs.victoriametrics.com/victoriametrics/) accessed with [VmReader](#vm-reader) with [MetricsQL](https://docs.victoriametrics.com/victoriametrics/metricsql/) queries or from [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/) / [VictoriaTraces](https://docs.victoriametrics.com/victoriatraces/) accessed with [VLogsReader](#victorialogs-reader) with [LogsQL](https://docs.victoriametrics.com/victorialogs/logsql/) queries.
+VictoriaMetrics Anomaly Detection (`vmanomaly`) reads Prometheus-compatible metrics from [VictoriaMetrics](https://docs.victoriametrics.com/victoriametrics/) through [VmReader](#vm-reader) and [MetricsQL](https://docs.victoriametrics.com/victoriametrics/metricsql/). It can also derive metrics from [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/) or [VictoriaTraces](https://docs.victoriametrics.com/victoriatraces/) through [VLogsReader](#victorialogs-reader) and [LogsQL](https://docs.victoriametrics.com/victorialogs/logsql/).
 
 Future updates will introduce additional readers, expanding the range of data sources `vmanomaly` can work with.
 
 ## Playgrounds
 
-To ease the development and testing of queries for `vmanomaly`'s input data, following playgrounds can be used for experimenting with MetricsQL and LogsQL queries:
+Use the following playgrounds to develop and test input queries:
 
-Please see respective sections below for specific reader:
 - [MetricsQL playground](#metricsql-playground) for `VmReader`
 - [LogsQL playground](#logsql-playground) for `VLogsReader`
 
@@ -28,7 +27,7 @@ Please see respective sections below for specific reader:
 
 {{% collapse name="Queries format migration (to v1.13.0+)" %}}
 
-> There is backward-compatible change{{% available_from "v1.13.0" anomaly %}} of [`queries`](https://docs.victoriametrics.com/anomaly-detection/components/reader/#vm-reader) arg of [VmReader](#vm-reader). New format allows to specify per-query parameters, like `step` to reduce amount of data read from VictoriaMetrics TSDB and to allow config flexibility. Please see [per-query parameters](#per-query-parameters) section for the details.
+> The backward-compatible `queries` format introduced in v1.13.0 allows [VmReader](#vm-reader) parameters such as `step` to be configured per query. This can reduce the amount of data read from VictoriaMetrics. See [per-query parameters](#per-query-parameters) for details.
 
 Old format like
 
@@ -263,7 +262,33 @@ BasicAuth password. If set, it will be used to authenticate the request.
 `30s`
             </td>
             <td>
-Timeout for the requests, passed as a string
+Backward-compatible timeout used for both datasource fetches and post-fetch processing when `fetch_timeout` or `processing_timeout` are not set.
+            </td>
+        </tr>
+        <tr>
+            <td>
+
+<span style="white-space: nowrap;">`fetch_timeout`</span>
+            </td>
+            <td>
+
+Not set (`timeout` fallback)
+            </td>
+            <td>
+Optional timeout {{% available_from "v1.30.0" anomaly %}} for each datasource read request. Use values such as `5s`, `30s`, or `1m`.
+            </td>
+        </tr>
+        <tr>
+            <td>
+
+<span style="white-space: nowrap;">`processing_timeout`</span>
+            </td>
+            <td>
+
+Not set (`timeout` fallback)
+            </td>
+            <td>
+Optional timeout {{% available_from "v1.30.0" anomaly %}} for post-fetch processing that prepares returned data for fit or inference. High-cardinality queries may need a larger processing timeout than their datasource fetch timeout.
             </td>
         </tr>
         <tr>
@@ -362,6 +387,19 @@ If True, then query will be performed from the last seen timestamp for a given s
         <tr>
             <td>
 
+<span style="white-space: nowrap;">`query_last_seen_max_lookback`</span>
+            </td>
+            <td>
+
+`None`
+            </td>
+            <td>
+Optional hard cap {{% available_from "v1.30.0" anomaly %}} for how far `query_from_last_seen_timestamp` may move a query start into the past to recover skipped inference intervals. When configured below the query step, the effective cap is raised to one step. Examples: `5m`, `1h`.
+            </td>
+        </tr>
+        <tr>
+            <td>
+
 <span style="white-space: nowrap;">`latency_offset`</span>
             </td>
             <td>
@@ -395,7 +433,7 @@ Optional arg{{% available_from "v1.17.0" anomaly %}} overrides how `search.maxPo
 `UTC`
             </td>
             <td>
-Optional argument{{% available_from "v1.18.0" anomaly %}} specifies the [IANA](https://nodatime.org/TimeZones) timezone to account for local shifts, like [DST](https://en.wikipedia.org/wiki/Daylight_saving_time), in models sensitive to seasonal patterns (e.g., [`ProphetModel`](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet) or [`OnlineQuantileModel`](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-seasonal-quantile)). Defaults to `UTC` if not set and can be overridden on a [per-query basis](#per-query-parameters).
+Optional argument {{% available_from "v1.18.0" anomaly %}} specifies the [IANA](https://nodatime.org/TimeZones) timezone to account for local shifts, like [DST](https://en.wikipedia.org/wiki/Daylight_saving_time), in models sensitive to seasonal patterns (e.g., [`TemporalEnvelopeModel`](https://docs.victoriametrics.com/anomaly-detection/components/models/#temporal-envelope), [`ProphetModel`](https://docs.victoriametrics.com/anomaly-detection/components/models/#prophet), or [`OnlineQuantileModel`](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-seasonal-quantile)). Defaults to `UTC` if not set and can be overridden on a [per-query basis](#per-query-parameters).
             </td>
         </tr>
         <tr>
@@ -461,6 +499,9 @@ reader:
       # tenant_id: '1:0'  # if set, overrides reader-level tenant_id
       # offset: '-15s'  # if set, overrides reader-level offset
   sampling_period: '1m'
+  timeout: '30s'  # backward-compatible default for both phases
+  fetch_timeout: '30s'  # timeout for each datasource request, overrides `timeout` if set
+  processing_timeout: '1m'  # timeout for preparing fetched series for fit/infer, overrides `timeout` if set
   query_from_last_seen_timestamp: True  # false by default
   latency_offset: '1ms'
   series_processing_batch_size: 8
@@ -530,7 +571,7 @@ reader:
 
 ### Healthcheck metrics
 
-`VmReader` exposes [several healthchecks metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#reader-behaviour-metrics).
+`VmReader` exposes [several health metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#reader-behaviour-metrics).
 
 
 ## VictoriaLogs reader
@@ -800,7 +841,33 @@ Frequency of the points returned. Will be converted to `/select/stats_query_rang
 `30s`
             </td>
             <td>
-(Optional) Specifies the maximum duration to wait for a query to complete before timing out. Can be set on a [per-query basis](#per-query-parameters-1) to override the reader-level setting.
+(Optional) Backward-compatible timeout used for both datasource fetches and post-fetch processing when `fetch_timeout` or `processing_timeout` are not set.
+            </td>
+        </tr>
+        <tr>
+            <td>
+
+<span style="white-space: nowrap;">`fetch_timeout`</span>
+            </td>
+            <td>
+
+Not set (`timeout` fallback)
+            </td>
+            <td>
+Optional timeout {{% available_from "v1.30.0" anomaly %}} for each datasource read request. Use values such as `5s`, `30s`, or `1m`.
+            </td>
+        </tr>
+        <tr>
+            <td>
+
+<span style="white-space: nowrap;">`processing_timeout`</span>
+            </td>
+            <td>
+
+Not set (`timeout` fallback)
+            </td>
+            <td>
+Optional timeout {{% available_from "v1.30.0" anomaly %}} for post-fetch processing that prepares returned data for fit or inference. High-cardinality results may need a larger processing timeout than their datasource fetch timeout.
             </td>
         </tr>
         <tr>
@@ -906,6 +973,19 @@ If a path to a CA bundle file (like `ca.crt`), it will verify the certificate us
 Optional argument {{% available_from "v1.29.7" anomaly %}}, allows specifying the number of time series to process together while preparing data for fit or infer stages. Defaults to `8`. Suggested values are 4-16 for high-cardinality queries.
             </td>
         </tr>
+        <tr>
+            <td>
+
+<span style="white-space: nowrap;">`query_last_seen_max_lookback`</span>
+            </td>
+            <td>
+
+`None`
+            </td>
+            <td>
+Optional hard cap {{% available_from "v1.30.0" anomaly %}} for how far last-seen recovery may move a query start into the past. Examples: `5m`, `1h`.
+            </td>
+        </tr>
     </tbody>
 </table>
 
@@ -927,7 +1007,9 @@ reader:
   series_processing_batch_size: 8
   data_range: [0, 'inf']  # reader-level
   offset: '0s'  # reader-level
-  timeout: '30s'
+  timeout: '30s'  # backward-compatible default for both phases
+  fetch_timeout: '30s'  # timeout for each datasource request, overrides `timeout` if set
+  processing_timeout: '1m'  # timeout for preparing fetched series for fit/infer, overrides `timeout` if set
   queries:
     # one query returning 1 result fields (avg_duration), it will have __name__ label (series name) as `duration_30m__avg`
     duration_avg_30m:
@@ -960,4 +1042,4 @@ Please refer to the [mTLS protection](#mtls-protection) section above for detail
 
 ### Healthcheck metrics
 
-Similarly to `VmReader`, `VLogsReader` also exposes [several healthchecks metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#reader-behaviour-metrics).
+Like `VmReader`, `VLogsReader` exposes [several health metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#reader-behaviour-metrics).

docs/anomaly-detection/components/scheduler.md

@@ -72,6 +72,8 @@ options={`"scheduler.periodic.PeriodicScheduler"`, `"scheduler.oneoff.OneoffSche
 
 > If `start_from` [parameter](#parameters-1) is used, it's suggested to also set `restore_state: true` in the [Settings section](https://docs.victoriametrics.com/anomaly-detection/components/settings/#state-restoration) of a config, so that the scheduler can restore its state from the previous run **if terminated or restarted in between scheduled runs** and continue producing anomaly scores without interruptions, otherwise the service will be idle until future `start_from` time is reached. E.g. if `start_from` is set to `20:00` and the service is started and then terminated and restarted at `20:30`, it will not produce any anomaly scores until the next day's `20:00` is reached (+23:30 of being idle), which introduces inconvenience for the users.
 
+> {{% available_from "v1.30.0" anomaly %}} If a periodic scheduler worker exits unexpectedly, the service attempts bounded restarts with exponential backoff instead of shutting down unrelated schedulers. Monitor [`vmanomaly_scheduler_alive`](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#startup-metrics) and `vmanomaly_scheduler_restarts_total` to alert on persistent failures.
+
 ### Parameters
 
 For periodic scheduler parameters are defined as differences in times, expressed in difference units, e.g. days, hours, minutes, seconds. Time granularity is defined by the last characters of a string. Examples: `"50s"` (seconds), `"4m"` (minutes), `"3h"` (hours), `"2d"` (days), `"1w"` (weeks).

docs/anomaly-detection/components/server.md

@@ -64,3 +64,15 @@ reader:
 After starting the `vmanomaly` server with the above configuration, UI can be accessed at `<vmanomaly-host>:8490/vmanomaly/vmui/` (e.g. `http://localhost:8490/vmanomaly/vmui/`).
 
 Rest API endpoints (e.g. `/metrics`) can be accessed at `<vmanomaly-host>:8490/vmanomaly/metrics` (e.g. `http://localhost:8490/vmanomaly/metrics`).
+
+### Time-series analysis and autotune API
+
+{{% available_from "v1.30.0" anomaly %}} The server exposes bounded endpoints for UI, MCP, and automation workflows:
+
+- `GET /api/v1/timeseries/characteristics` samples the supplied query and summarizes trend, calendar seasonality, changepoints, gaps, and intermittent or spiky behavior. Use `limit` (default 100) to cap sampled series and pass the production `step` and timezone.
+- `POST /api/v1/autotune/tasks` starts asynchronous shared-model tuning. The request contains the query, candidate `tuned_class_name`, expected `anomaly_percentage`, data-source settings, and optimization parameters.
+- `GET /api/v1/autotune/tasks/{task_id}` returns progress and the concrete suggested `modelConfig` when complete.
+- `DELETE /api/v1/autotune/tasks/{task_id}` cancels pending work cooperatively.
+
+> [!TIP]
+> For a complete request and recommended workflow, see [Shared asynchronous autotune workflow](https://docs.victoriametrics.com/anomaly-detection/components/models/#shared-asynchronous-autotune-workflow). OpenAPI schemas for the running version are available at `/docs` endpoint of a running `vmanomaly` instance.

docs/anomaly-detection/components/settings.md

@@ -307,7 +307,7 @@ This means that the service upon restart:
 
 ## Retention
 
-{{% available_from "v1.28.1" anomaly %}} The `retention` argument allows to set a [time-to-live](https://en.wikipedia.org/wiki/Time_to_live) (TTL) for service artifacts, such as stored model instances and their training data. When enabled, the service will periodically check (controlled by `check_interval` period) and clean up model instances that have not been used for inference or refitting within the specified period of time (defined in `ttl` argument as a valid period). This helps to manage resources in long-running deployments by removing stale or unused artifacts.
+{{% available_from "v1.28.1" anomaly %}} The `retention` argument sets a [time to live](https://en.wikipedia.org/wiki/Time_to_live) (TTL) for service artifacts such as stored model instances and training data. At each `check_interval`, the service removes artifacts that have not been used for inference or refitting within `ttl`. This bounds stale resource usage in long-running deployments.
 
 ### Use Cases
 - With **[online models](https://docs.victoriametrics.com/anomaly-detection/components/models/#online-models)** as they continuously create model instances for new timeseries over time during inference calls, especially when combined with [periodic schedulers](https://docs.victoriametrics.com/anomaly-detection/components/scheduler/#periodic-scheduler) with infrequent `fit_every` (say, `90d`).
@@ -322,7 +322,7 @@ The section is **backward-compatible and disabled by default**, meaning that all
 
 `ttl` argument defines the time-to-live period for model instances and their training data. It should be a valid period string (e.g., `7d` for 7 days, `30d` for 30 days, etc.). If a model instance or its training data has not been used for inference or refitting within this period, it will be considered stale and eligible for cleanup.
 
-> If set higher than respective scheduler's `fit_every` period, the ttl will have no effect, as models will always be refitted before they become stale.
+> If `ttl` is greater than a scheduler's `fit_every`, the model is refitted before it becomes stale and the TTL has no effect.
 
 `check_interval` argument defines how often the service should check for stale artifacts. It should be a valid period string (e.g., `1h` for 1 hour, `24h` for 24 hours, etc.). During each check, the service will evaluate all stored model instances and their training data against the defined `ttl` and remove those that are stale.
 
@@ -401,4 +401,4 @@ settings:
     model: WARNING  # applies to all components with 'model' prefix, such as 'model.zscore_online', 'model.prophet', etc.
     # once commented out in hot-reload mode, will use the default logger level set by --loggerLevel command line argument
     # monitoring.push: critical
-```
+```

docs/anomaly-detection/components/writer.md

@@ -334,7 +334,7 @@ For detailed guidance on configuring mTLS parameters such as `verify_tls`, `tls_
 
 ### Healthcheck metrics
 
-`VmWriter` exposes [several healthchecks metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#writer-behaviour-metrics). 
+`VmWriter` exposes [several health metrics](https://docs.victoriametrics.com/anomaly-detection/components/monitoring/#writer-behaviour-metrics).
 
 ### Metrics formatting
 

docs/anomaly-detection/guides/guide-vmanomaly-vmalert/README.md

@@ -10,9 +10,9 @@ sitemap:
 
 - To use *vmanomaly*, part of the enterprise package, a license key is required. Obtain your key [here](https://victoriametrics.com/products/enterprise/trial/) for this tutorial or for enterprise use.
 - In the tutorial, we'll be using the following VictoriaMetrics components:
-  -  [VictoriaMetrics Single-Node](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/) (v1.147.0)
-  -  [vmalert](https://docs.victoriametrics.com/victoriametrics/vmalert/) (v1.147.0)
-  -  [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) (v1.147.0)
+  -  [VictoriaMetrics Single-Node](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/) (v1.148.0)
+  -  [vmalert](https://docs.victoriametrics.com/victoriametrics/vmalert/) (v1.148.0)
+  -  [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) (v1.148.0)
 - [Grafana](https://grafana.com/) (v12.2.0)
 - [Docker](https://docs.docker.com/get-docker/) and [Docker Compose](https://docs.docker.com/compose/)
 - [Node exporter](https://github.com/prometheus/node_exporter#node-exporter) (v1.9.1) and [Alertmanager](https://prometheus.io/docs/alerting/latest/alertmanager/) (v0.28.1)
@@ -323,7 +323,7 @@ Let's wrap it all up together into the `docker-compose.yml` file.
 services:
   vmagent:
     container_name: vmagent
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     depends_on:
       - "victoriametrics"
     ports:
@@ -340,7 +340,7 @@ services:
 
   victoriametrics:
     container_name: victoriametrics
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
     ports:
       - 8428:8428
     volumes:
@@ -373,7 +373,7 @@ services:
 
   vmalert:
     container_name: vmalert
-    image: victoriametrics/vmalert:v1.147.0
+    image: victoriametrics/vmalert:v1.148.0
     depends_on:
       - "victoriametrics"
     ports:
@@ -395,7 +395,7 @@ services:
     restart: always
   vmanomaly:
     container_name: vmanomaly
-    image: victoriametrics/vmanomaly:v1.29.7
+    image: victoriametrics/vmanomaly:v1.30.0
     depends_on:
       - "victoriametrics"
     ports:

docs/guides/connecting-vm-components-to-cloud-storage/README.md

@@ -0,0 +1,426 @@
+Several VictoriaMetrics components can connect to cloud storage to read or write object data.
+
+The following table shows the supported types of storage for each component:
+
+| Component | AWS S3 and S3-compatible | Google Cloud Storage | Azure Blob Storage |
+|-----------|----|----------------------|--------------------|
+| [vmbackup](https://docs.victoriametrics.com/victoriametrics/vmbackup/) | ✅ | ✅ | ✅ |
+| [vmrestore](https://docs.victoriametrics.com/victoriametrics/vmrestore/) | ✅ | ✅ | ✅ |
+| [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/) | ✅ | ✅ | ✅ |
+| [vmalert](https://docs.victoriametrics.com/victoriametrics/vmalert/) |  ✅ | ✅ | ❌ |
+
+All these components use the same underlying libraries, so the authentication setup is largely the same. The main difference is in the command-line flags: 
+
+- vmalert uses `-s3.*` prefixed flags (e.g., `-s3.credsFilePath`)
+- backup and restore tools use unprefixed flags (e.g., `-credsFilePath`)
+
+See the [component reference](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/#per-component-flag-reference) for details.
+
+## Obtaining credentials
+
+You need to supply credentials so the component can connect to the cloud storage. The setup differs by provider; the sections below cover AWS S3, S3‑compatible systems, GCS, and Azure Blob Storage.
+
+### AWS S3
+
+1. In AWS, [create an IAM user](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_users_create.html) or role with the minimum permissions for the target bucket (see table below).
+1. [Create an access key](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html) for that IAM identity.
+1. Copy the **Access key ID** and **Secret access key** values. You will use them in the credentials file or environment variables.
+
+| Component       | S3 usage                                                    | Minimum S3 permissions |
+|-----------------|-------------------------------------------------------------|------------------------|
+| vmalert (Enterprise) | Reads alerting/recording rules from bucket.    | `s3:GetObject`, `s3:ListBucket` on the rules bucket/prefix.|
+| vmrestore       | Restores backups from S3 buckets                            | `s3:GetObject`, `s3:ListBucket` on the backup bucket/prefix.|
+| vmbackup        | Uploads backups to S3 and may delete old backup objects during maintenance.| `s3:PutObject`, `s3:GetObject`, `s3:ListBucket`, `s3:DeleteObject` on the backup bucket/prefix.|
+| vmbackupmanager (Enterprise) | Automates backups using vmbackup behavior.                  | Same as vmbackup. |
+
+
+### S3-compatible storage (MinIO, Ceph)
+
+Generate access keys using your storage system's admin interface or CLI. The credentials follow the same format as AWS S3.
+
+### Google Cloud Storage
+
+1. Open the Google Cloud Console and go to **IAM & Admin > Service Accounts**.
+1. Click **Create service account**, enter a name, and assign a Storage role (for example, Storage Object Admin).
+1. Open the service account, go to **Keys**, then click **Add key > Create new key**.
+1. Choose **JSON** as the key type and click **Create**.
+1. Store the JSON file on the machine running the VictoriaMetrics component.
+
+### Azure Blob Storage
+
+> Azure does not use credential files.
+
+1. Log in to the Azure Portal.
+1. Search for and select **Storage accounts**.
+1. Click on your specific storage account name. (This is your `AZURE_STORAGE_ACCOUNT_NAME`).
+1. In the left menu under **Security + networking**, click **Access keys**.
+1. Copy the key value from either **key1** or **key2** (this is your `AZURE_STORAGE_ACCOUNT_KEY`).
+1. Define the access keys as environment variables.
+    ```sh
+    export AZURE_STORAGE_ACCOUNT_NAME=mystorageaccount
+    export AZURE_STORAGE_ACCOUNT_KEY=myaccountkey
+    ```
+
+## Authenticating with the cloud provider
+
+Provide the credentials as a file or with environment variables, along with the path to the cloud storage bucket. The syntax for the bucket name depends on the cloud provider:
+
+- `s3://`: for AWS S3 and self-hosted S3-compatible storage (MinIO, Ceph)
+- `gs://`: Google Cloud Storage
+- `azblob://`: Azure Blob Storage
+
+### vmbackup and vmrestore
+
+The following example backups to an AWS S3 bucket using a credentials file:
+
+```sh
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=s3://victoriametrics-backup/backup01 \
+  -credsFilePath=/etc/credentials
+```
+
+In order to restore from the same backup from AWS S3:
+
+```sh
+vmrestore \
+  -src=s3://victoriametrics-backup/backup01 \
+  -storageDataPath=/data \
+  -credsFilePath=/etc/credentials
+
+```
+
+> To use non-AWS S3 buckets such as MinIO or Ceph, you must [supply the `-customS3Endpoint` argument](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/#s3-compatible).
+
+Alternatively, you can set the access keys as environment variables instead of using a credential file:
+
+```sh
+export AWS_ACCESS_KEY_ID=YOUR_AWS_ACCESS_KEY
+export AWS_SECRET_ACCESS_KEY=YOUR_SECRET_AWS_ACCESS_KEY
+
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=s3://victoriametrics-backup/backup01
+
+vmrestore \
+  -src=s3://victoriametrics-backup/backup01 \
+  -storageDataPath=/data
+```
+
+
+Backups on Google Cloud Storage use the `gs://` prefix in the destination:
+
+```sh
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=gs://victoriametrics-backup/backup01 \
+  -credsFilePath=/etc/credentials
+```
+
+You can restore this backup with:
+
+```sh
+vmrestore \
+  -src=gs://victoriametrics-backup/backup01 \
+  -storageDataPath=/data \
+  -credsFilePath=/etc/credentials
+```
+
+On Google Cloud, you can define the path to the JSON credential file with `GOOGLE_APPLICATION_CREDENTIALS`. For example:
+
+```sh
+export GOOGLE_APPLICATION_CREDENTIALS=/etc/credentials
+
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=gs://victoriametrics-backup/backup01
+
+vmrestore \
+  -src=gs://victoriametrics-backup/backup01 \
+  -storageDataPath=/data
+```
+
+For Azure Blob Storage, use the `azblob://` prefix and rely on environment variables instead of `-credsFilePath`.
+
+```sh
+export AZURE_STORAGE_ACCOUNT_NAME=myaccount
+export AZURE_STORAGE_ACCOUNT_KEY=mykey
+
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=azblob://victoriametrics-backup/backup01
+
+vmrestore \
+  -src=azblob://victoriametrics-backup/backup01 \
+  -storageDataPath=/data
+```
+
+### vmbackupmanager 
+
+> vmbackupmanager only works in the [Enterprise](https://docs.victoriametrics.com/victoriametrics/enterprise/) edition.
+
+To manage backups with vmbackupmanager on AWS S3, add the credentials with the `-credsFilePath` flag:
+
+```sh
+vmbackupmanager \
+  -dst=s3://vmstorage-data/backups \
+  -credsFilePath=/etc/credentials \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=http://vmstorage:8482/snapshot/create \
+  -licenseFile=/etc/vm-license
+```
+
+Or define the access keys using environment variables:
+
+```sh
+export AWS_ACCESS_KEY_ID=YOUR_AWS_ACCESS_KEY
+export AWS_SECRET_ACCESS_KEY=YOUR_SECRET_AWS_ACCESS_KEY
+
+vmbackupmanager \
+  -dst=s3://vmstorage-data/backups \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=http://vmstorage:8482/snapshot/create \
+  -licenseFile=/etc/vm-license
+```
+
+> To use non-AWS S3 buckets, you must [supply the `-customS3Endpoint` argument](#s3-compatible).
+
+Automated backups on Google Cloud Storage take the following form:
+
+```sh
+vmbackupmanager \
+  -dst=gs://vmstorage-data/backups \
+  -credsFilePath=/etc/credentials \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=http://vmstorage:8482/snapshot/create \
+  -licenseFile=/etc/vm-license
+```
+
+As with vmbackup and vmrestore, you can also define the path to the JSON credential file with `GOOGLE_APPLICATION_CREDENTIALS`:
+
+```sh
+export GOOGLE_APPLICATION_CREDENTIALS=/etc/credentials
+
+vmbackupmanager \
+  -dst=gs://vmstorage-data/backups \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=http://vmstorage:8482/snapshot/create \
+  -licenseFile=/etc/vm-license
+```
+
+vmbackupmanager can also use Azure Blob Storage by defining environment variables:
+
+```sh
+export AZURE_STORAGE_ACCOUNT_NAME=mystorageaccount
+export AZURE_STORAGE_ACCOUNT_KEY=myaccountkey
+
+vmbackupmanager \
+  -dst=azblob://vmstorage-data/backups \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=http://vmstorage:8482/snapshot/create \
+  -licenseFile=/etc/vm-license
+```
+
+### vmalert
+
+> - vmalert cloud storage command line flags are prefixed with `-s3.` for S3 buckets *and* Google Cloud Storage.
+> - Cloud storage only works in the [Enterprise](https://docs.victoriametrics.com/victoriametrics/enterprise/) edition.
+
+Read alerting rules from an S3 bucket. The `-rule` flag accepts a prefix, so it matches all files starting with `alerts_` in the `rules` folder:
+
+```sh
+vmalert \
+  -rule=s3://my-alert-bucket/rules/alerts_ \
+  -s3.credsFilePath=/etc/vmalert/aws-credentials \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+Instead of a credential file, you can supply the access keys using environment variables:
+
+```sh
+export AWS_ACCESS_KEY_ID=YOUR_AWS_ACCESS_KEY
+export AWS_SECRET_ACCESS_KEY=YOUR_SECRET_AWS_ACCESS_KEY
+
+vmalert \
+  -rule=s3://my-alert-bucket/rules/alerts_ \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+> To use non-AWS S3 buckets, you must [supply the `-s3.customEndpoint` argument](#s3-compatible).
+
+To read rules from Google Cloud Storage:
+
+```sh
+vmalert \
+  -rule=gs://my-alert-bucket/rules/alerts_ \
+  -s3.credsFilePath=/etc/vmalert/gcp-service-account.json \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+If you prefer, you can supply the path to the JSON credential file with the `GOOGLE_APPLICATION_CREDENTIALS` environment variable:
+
+```sh
+export GOOGLE_APPLICATION_CREDENTIALS=/etc/credentials
+
+vmalert \
+  -rule=gs://my-alert-bucket/rules/alerts_ \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+## Credentials files format
+
+The file format depends on the storage provider.
+
+### S3 credentials
+
+The file uses the standard AWS shared credentials format used by the [AWS CLI](https://docs.aws.amazon.com/cli/v1/userguide/cli-configure-files.html) and [AWS SDKs](https://docs.aws.amazon.com/sdkref/latest/guide/file-format.html):
+
+```ini
+[default]
+aws_access_key_id=YOUR_AWS_ACCESS_KEY
+aws_secret_access_key=YOUR_AWS_SECRET_ACCESS_KEY
+```
+
+You can define multiple profiles in a single file:
+
+```ini
+[default]
+aws_access_key_id=DEFAULT_ACCESS_KEY
+aws_secret_access_key=DEFAULT_SECRET_KEY
+
+[monitoring]
+aws_access_key_id=MONITORING_ACCESS_KEY
+aws_secret_access_key=MONITORING_SECRET_KEY
+
+[alerts]
+aws_access_key_id=ALERTS_ACCESS_KEY
+aws_secret_access_key=ALERTS_SECRET_KEY
+```
+
+Use the `-configProfile` flag (or `-s3.configProfile` in vmalert) to select a non-default profile:
+
+```sh
+-configProfile=alerts
+```
+
+You can separate credentials from other configuration settings. Put credentials in one file:
+
+```ini
+[default]
+aws_access_key_id=DEFAULT_ACCESS_KEY
+aws_secret_access_key=DEFAULT_SECRET_KEY
+```
+
+And non-sensitive settings in another:
+
+```ini
+[default]
+region=us-east-1
+```
+
+Then pass both files:
+
+```sh
+-configFilePath=/etc/aws-config \
+-credsFilePath=/etc/credentials
+```
+
+### GCS credentials file format
+
+The file is the JSON key downloaded from Google Cloud Console. Its content looks like this:
+
+```json
+{
+  "type": "service_account",
+  "project_id": "project-id",
+  "private_key_id": "key-id",
+  "private_key": "-----BEGIN PRIVATE KEY-----\nprivate-key\n-----END PRIVATE KEY-----\n",
+  "client_email": "service-account-email",
+  "client_id": "client-id",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://accounts.google.com/o/oauth2/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/service-account-email"
+}
+```
+
+This is the standard service account key format defined by [Google Cloud IAM](https://developers.google.com/workspace/guides/create-credentials).
+
+### Azure Blob Storage
+
+Azure does not support credentials via file. Use environment variables instead.
+
+```sh
+export AZURE_STORAGE_ACCOUNT_NAME=mystorageaccount
+export AZURE_STORAGE_ACCOUNT_KEY=myaccountkey
+```
+
+## Self-hosted and S3-compatible endpoints
+
+For S3-compatible storage such as MinIO or Ceph, set a custom endpoint with the `-customS3Endpoint` flag  for vmbackup, vmrestore, and vmbackupmanager. For example:
+
+```sh
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=s3://victoriametrics-backup/backup01 \
+  -customS3Endpoint=http://minio.example.local:9000
+```
+
+On vmalert, use the `-s3.customEndpoint` flag instead:
+
+```sh
+vmalert \
+  -rule=s3://my-alert-bucket/rules/alerts_ \
+  -s3.customEndpoint=http://minio.example.local:9000 \
+  -s3.credsFilePath=/etc/vmalert/aws-credentials \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+### Addressing S3-compatible buckets {#s3-compatible}
+
+When connecting to non-AWS S3-compatible buckets, there is an additional flag you might need to configure:
+
+- `-s3ForcePathStyle`: on vmbackupmanager, vmbackup, and vmrestore.
+- `-s3.forcePathStyle`: on vmalert.
+
+The flag changes the expected URL pattern for a bucket.
+
+| Flag value | Address-style | Example | Use with |
+|------------|---------------|---------|----------|
+| `true` (default) | Path-style | `https://endpoint/bucket/key` |  MinIO, Ceph, most S3-compatible storages |
+| `false`        | Virtual host-style | `https://bucket.endpoint/key` | [Aliyun OSS](https://www.aliyun.com/product/oss) and other endpoints that require it |
+
+> The flag only takes effect when you use a custom endpoint (`-customS3Endpoint` or `-s3.customEndpoint` on vmalert). When connecting to real AWS S3, the SDK handles addressing automatically.
+
+## Per-component flag reference
+
+The table below shows how the same concept maps to different flag names across components.
+
+| Concept | vmalert | vmbackup, vmrestore, and vmbackupmanager |
+|---|---|---|---|---|
+| Credentials file | `-s3.credsFilePath` | `-credsFilePath` |
+| Config file | `-s3.configFilePath` | `-configFilePath` |
+| Profile selection | `-s3.configProfile` | `-configProfile` |
+| Custom endpoint | `-s3.customEndpoint` | `-customS3Endpoint` |
+| Force path style | `-s3.forcePathStyle` | `-s3ForcePathStyle` |
+| TLS insecure | N/A | `-s3TLSInsecureSkipVerify` |
+| Storage class | N/A | `-s3StorageClass` |
+
+
+

docs/guides/connecting-vm-components-to-cloud-storage/_index.md

@@ -0,0 +1,12 @@
+---
+weight: 5
+title: Connecting VictoriaMetrics components to cloud storage
+menu:
+  docs:
+    parent: guides
+    weight: 5
+tags:
+  - metrics
+  - guide
+---
+{{% content "README.md" %}}

docs/guides/grafana-vmauth-openid-configuration/README.md

@@ -240,23 +240,23 @@ vmagent will write data into VictoriaMetrics single-node and cluster (with tenan
 # compose.yaml
 services:
   vmsingle:
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
 
   vmstorage:
-    image: victoriametrics/vmstorage:v1.147.0-cluster
+    image: victoriametrics/vmstorage:v1.148.0-cluster
 
   vminsert:
-    image: victoriametrics/vminsert:v1.147.0-cluster
+    image: victoriametrics/vminsert:v1.148.0-cluster
     command:
       - -storageNode=vmstorage:8400
 
   vmselect:
-    image: victoriametrics/vmselect:v1.147.0-cluster
+    image: victoriametrics/vmselect:v1.148.0-cluster
     command:
       - -storageNode=vmstorage:8401
 
   vmagent:
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     volumes:
       - ./scrape.yaml:/etc/vmagent/config.yaml
     command:
@@ -308,7 +308,7 @@ Now add the vmauth service to `compose.yaml`:
 # compose.yaml
 services:
   vmauth:
-    image: docker.io/victoriametrics/vmauth:v1.147.0
+    image: docker.io/victoriametrics/vmauth:v1.148.0
     ports:
       - 8427:8427
     volumes:

docs/guides/vmagent-openid-configuration/README.md

@@ -155,15 +155,15 @@ These services will store and query the metrics scraped by vmagent.
 # compose.yaml
 services:
   vmstorage:
-    image: victoriametrics/vmstorage:v1.147.0-cluster
+    image: victoriametrics/vmstorage:v1.148.0-cluster
 
   vminsert:
-    image: victoriametrics/vminsert:v1.147.0-cluster
+    image: victoriametrics/vminsert:v1.148.0-cluster
     command:
       - -storageNode=vmstorage:8400
 
   vmselect:
-    image: victoriametrics/vmselect:v1.147.0-cluster
+    image: victoriametrics/vmselect:v1.148.0-cluster
     command:
       - -storageNode=vmstorage:8401
     ports:
@@ -196,7 +196,7 @@ Add the vmauth service to `compose.yaml`:
 # compose.yaml
 services:
   vmauth:
-    image: victoriametrics/vmauth:v1.147.0-enterprise
+    image: victoriametrics/vmauth:v1.148.0-enterprise
     ports:
       - 8427:8427
     volumes:
@@ -251,7 +251,7 @@ Add the vmagent service to `compose.yaml` with OAuth2 configuration:
 # compose.yaml
 services:
   vmagent:
-    image: victoriametrics/vmagent:v1.147.0
+    image: victoriametrics/vmagent:v1.148.0
     volumes:
       - ./scrape.yaml:/etc/vmagent/config.yaml
     command:

docs/guides/vmalert-datasource-managed-alerts-grafana/README.md

@@ -107,7 +107,7 @@ The final piece is the Docker Compose file. This ties all the services together
 # compose.yml
 services:
   victoriametrics:
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
     command:
       - "--storageDataPath=/victoria-metrics-data"
       - "--selfScrapeInterval=10s"
@@ -128,7 +128,7 @@ services:
       - ./alertmanager.yml:/etc/alertmanager/alertmanager.yml:ro
 
   vmalert:
-    image: victoriametrics/vmalert:v1.147.0
+    image: victoriametrics/vmalert:v1.148.0
     depends_on:
       - victoriametrics
       - alertmanager

docs/victoriametrics/Cluster-VictoriaMetrics.md

@@ -829,12 +829,9 @@ See also [minimum downtime strategy](#minimum-downtime-strategy).
 
 ## Slowness-based re-routing
 
-By default, `vminsert` nodes limit the cluster's overall ingestion rate to the throughput of the slowest `vmstorage` node. 
-This ensures that incoming metrics are evenly distributed across all `vmstorage` nodes. 
-The downside is that a single slow vmstorage node can throttle the entire cluster.
-
-When `-disableRerouting=false` is enabled on `vminsert`, 
-the cluster will automatically re-route writes away from the slowest vmstorage node to preserve maximum ingestion throughput.
+By default{{% available_from "#" %}}, `vminsert` automatically re-routes writes away from the slowest `vmstorage` node
+to preserve maximum ingestion throughput. This prevents a single slow `vmstorage` node
+from throttling the entire cluster.
 
 Re-routing occurs only when all of the following conditions hold:
 - the storage send buffer is full.
@@ -842,11 +839,15 @@ Re-routing occurs only when all of the following conditions hold:
 - the vmstorage cluster have much lower saturation overall.
 - the vmstorage cluster has at least three ready nodes.
 
-Enable slowness-based re-routing when peak write throughput matters more 
-than minimizing the number of [active time series](https://docs.victoriametrics.com/victoriametrics/faq/#what-is-an-active-time-series)
-or keeping metrics perfectly balanced across nodes.
+Disable slowness-based re-routing with `-disableRerouting=true` when keeping metrics
+perfectly balanced across nodes or minimizing the number of [active time series](https://docs.victoriametrics.com/victoriametrics/faq/#what-is-an-active-time-series) 
+matters more than peak write throughput.
 
-The rerouting and node saturation could be seen at  [VictoriaMetrics - cluster](https://grafana.com/grafana/dashboards/11176) dashboard.
+Slowness-based re-routing is automatically disabled{{% available_from "#" %}} when `-replicationFactor` is greater than `1`,
+because rerouting does not guarantee that replicated copies land on distinct storage nodes,
+which violates the replication contract.
+
+The rerouting and node saturation could be seen at [VictoriaMetrics - cluster](https://grafana.com/grafana/dashboards/11176) dashboard.
 
 ## Capacity planning
 

docs/victoriametrics/LTS-releases.md

@@ -27,5 +27,5 @@ to [the latest available releases](https://docs.victoriametrics.com/victoriametr
 
 ## Currently supported LTS release lines
 
-- v1.136.x - the latest one is [v1.136.4 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.136.4)
-- v1.122.x - the latest one is [v1.122.19 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.122.19)
+- v1.148.x - the latest one is [v1.148.0 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.148.0)
+- v1.136.x - the latest one is [v1.136.14 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.136.14)

docs/victoriametrics/Quick-Start.md

@@ -53,8 +53,8 @@ and unpack it. It contains a single `victoria-metrics-prod` binary.
 For example, on Linux with `amd64` architecture:
 
 ```sh
-wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.147.0/victoria-metrics-linux-amd64-v1.147.0.tar.gz
-tar xzf victoria-metrics-linux-amd64-v1.147.0.tar.gz
+wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.148.0/victoria-metrics-linux-amd64-v1.148.0.tar.gz
+tar xzf victoria-metrics-linux-amd64-v1.148.0.tar.gz
 ```
 
 The binary is self-contained and requires no installation - it is ready to run as is.
@@ -229,9 +229,9 @@ Download the newest available [VictoriaMetrics release](https://docs.victoriamet
 from [DockerHub](https://hub.docker.com/r/victoriametrics/victoria-metrics) or [Quay](https://quay.io/repository/victoriametrics/victoria-metrics?tab=tags):
 
 ```sh
-docker pull victoriametrics/victoria-metrics:v1.147.0
+docker pull victoriametrics/victoria-metrics:v1.148.0
 docker run -it --rm -v `pwd`/victoria-metrics-data:/victoria-metrics-data -p 8428:8428 \
- victoriametrics/victoria-metrics:v1.147.0 --selfScrapeInterval=5s -storageDataPath=victoria-metrics-data
+ victoriametrics/victoria-metrics:v1.148.0 --selfScrapeInterval=5s -storageDataPath=victoria-metrics-data
 ```
 
 _For Enterprise images, see [this link](https://docs.victoriametrics.com/victoriametrics/enterprise/#docker-images)._

docs/victoriametrics/changelog/CHANGELOG.md

@@ -26,9 +26,21 @@ See also [LTS releases](https://docs.victoriametrics.com/victoriametrics/lts-rel
 
 ## tip
 
+**Update Note 1:** `vminsert` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): the default value of `-disableRerouting` flag has changed from `true` to `false`, enabling [slowness-based re-routing](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#slowness-based-re-routing) by default. Slowness re-routing is automatically disabled when `-replicationFactor` is greater than 1. If you rely on the old behavior, pass `-disableRerouting` command-line flag to `vminsert`. See [#11287](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11287).
+
+* FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): add `name` label identifying the corresponding `-remoteWrite.url` target to the `vm_persistentqueue_*` metrics exposed by persistent queue. See [#7944](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/7944). Thanks to @tIGO for contribution.
+* FEATURE: `vminsert` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): enable [slowness-based re-routing](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#slowness-based-re-routing) by default. Previously, `-disableRerouting` defaulted to `true`, which limited ingestion throughput to the slowest `vmstorage` node. Now `-disableRerouting` defaults to `false`, so `vminsert` automatically routes data away from the slowest `vmstorage` node, improving overall ingestion performance. Slowness re-routing is automatically disabled when `-replicationFactor` is greater than 1. See [#11287](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11287).
+* FEATURE: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): persist the selected auto-refresh interval in the URL. See [VictoriaLogs#1310](https://github.com/VictoriaMetrics/VictoriaLogs/issues/1310).
+* FEATURE: [dashboards](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/dashboards): add `Fsync avg duration` panel to the Troubleshooting section of the single-node, cluster, and vmagent dashboards. This panel surfaces degradation of IO operation for faster incident triage. See [#10432](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10432).
+* FEATURE: [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/) and [alerts](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/deployment/docker/rules): introduce `vm_backup_last_success_at` metric to track the last successful backup by type. Add [alerting rules](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/deployment/docker/rules/alerts-vmbackupmanager.yml) `NoLatestBackupWithinLastDay`, `NoHourlyBackupWithinLastDay`, `NoDailyBackupWithinLast3Days`, `NoWeeklyBackupWithinLast14Days` and `NoMonthlyBackupWithinLast62Days` to remind users about the missing backups. See [#11217](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11217).
+
+* BUGFIX: [MetricsQL](https://docs.victoriametrics.com/victoriametrics/metricsql/): properly drop data points filtered out by an inner [comparison operation](https://prometheus.io/docs/prometheus/latest/querying/operators/#comparison-binary-operators) when its result is used on the right side of another comparison. Previously, queries like `foo != (bar > 100)` could return unexpected results because filtered-out data points are represented internally as `NaN`, and `value != NaN` evaluates to `true`. Comparisons against explicitly present `NaN` values keep the previous behavior. See [#10018](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10018). Thanks to @zasdaym for contribution.
+* BUGFIX: [vmalert](https://docs.victoriametrics.com/victoriametrics/vmalert/): fixed the display of rule state badges on the `Groups` page in the web UI. See [#11160](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11160).
+* BUGFIX: [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/): previously, `vmbackupmanager` was crashing on startup when it failed to restore backup state from remote storage, causing a crash loop. Now it logs the error and continues running, retrying the state restore before each scheduled backup. Added `vm_backup_errors_total{type="restoreState"}` metric to track backup state restore failures. See [#11217](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11217).
+
 ## [v1.148.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.148.0)
 
-Release candidate
+Released at 2026-07-20
 
 * SECURITY: upgrade Go builder from Go1.26.4 to Go1.26.5. See [the list of issues addressed in Go1.26.5](https://github.com/golang/go/issues?q=milestone%3AGo1.26.5%20label%3ACherryPickApproved).
 
@@ -36,6 +48,7 @@ Release candidate
 * FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) and [vmsingle](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/): support scraping metrics over Unix domain sockets. The socket path can be configured via the `__unix_socket__` target label. See [#11156](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11156). Thanks to @vinyas-bharadwaj for contribution.
 * FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) and [vmsingle](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/): Improve background discovery performance for [http_sd](https://docs.victoriametrics.com/victoriametrics/sd_configs/#http_sd_configs) discovery. See [#8838](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/8838).
 * FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) and [vmsingle](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/): allow overriding `max_scrape_size` on a per-target basis via the `__max_scrape_size__` label during target relabeling. See [#11188](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11188).
+* FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) and [vmalert](https://docs.victoriametrics.com/victoriametrics/vmalert/): add client side least-loaded load-balancing with `DNS` discovery. See [#2388](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2388) and these [vmagent DNS URLs](https://docs.victoriametrics.com/victoriametrics/vmagent/#dns-urls), [vmalert DNS URLs](https://docs.victoriametrics.com/victoriametrics/vmalert/#dns-urls).
 * FEATURE: [vmstorage](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/) and [vmsingle](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/): add `-maxBackfillAge` command-line flag for limiting ingestion of samples with historical timestamps, for example, when older data has been moved between storage tiers (nvme/hdd, hot/cold). See [#11199](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11199). Thanks to @AshwinRamaniPsg for contribution.
 * FEATURE: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): automatically preload relabeling rules configured via `-remoteWrite.relabelConfig` and `-remoteWrite.urlRelabelConfig` in the [metrics relabel debug UI](https://docs.victoriametrics.com/victoriametrics/relabeling/#relabel-debugging). See [#9918](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/9918).
 
@@ -50,6 +63,7 @@ Release candidate
 * BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): hide `Total metric names` stats on [Cardinality Explorer](https://docs.victoriametrics.com/victoriametrics/#cardinality-explorer) page when user selects a specific metric or label to focus. See [#11154](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11154) for details. Thanks to @lghuy05 for the contribution.
 * BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): keep only one header navigation dropdown (`Explore`, `Tools`) open at a time. Previously, hovering across two dropdowns could briefly leave both open due to the close delay. See [#11224](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11224). Thanks to @antedotee for contribution.
 * BUGFIX: [vmauth](https://docs.victoriametrics.com/victoriametrics/vmauth/): return `408 Request Timeout` instead of `400 Bad Request` when the request body isn't received within `-maxQueueDuration`. This prevents `vmagent` from incorrectly downgrading the remote write protocol and dropping data when `vmauth` is used as a proxy for a remote write endpoint. See [#11272](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11272).
+
 ## [v1.147.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.147.0)
 
 Released at 2026-07-06
@@ -347,6 +361,27 @@ It enables back `Discovered targets` debug UI by default.
 * BUGFIX: `vmstorage` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): properly apply `extra_filters[]` filter when querying `vm_account_id` or `vm_project_id` labels via [multitenant](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#multitenancy) request for `/api/v1/label/…/values` API. Before, `extra_filters` was ignored. See [#10503](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/10503).
 * BUGFIX: [vmsingle](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/) and `vmselect` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): revert the use of rollup result cache for [instant queries](https://docs.victoriametrics.com/keyConcepts.html#instant-query) that contain [`rate`](https://docs.victoriametrics.com/MetricsQL.html#rate) function with a lookbehind window larger than `-search.minWindowForInstantRollupOptimization`. The cache usage was removed since [v1.132.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.132.0). See [#10098](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10098#issuecomment-3895011084) for more details.
 
+## [v1.136.14](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.136.14)
+
+Released at 2026-07-17
+
+**v1.136.x is a line of [LTS releases](https://docs.victoriametrics.com/victoriametrics/lts-releases/). It contains important up-to-date bugfixes for [VictoriaMetrics enterprise](https://docs.victoriametrics.com/victoriametrics/enterprise/).
+All these fixes are also included in [the latest community release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/latest).
+The v1.136.x line will be supported for at least 12 months since [v1.136.0](https://docs.victoriametrics.com/victoriametrics/changelog/#v11360) release**
+
+* SECURITY: upgrade Go builder from Go1.26.4 to Go1.26.5. See [the list of issues addressed in Go1.26.5](https://github.com/golang/go/issues?q=milestone%3AGo1.26.5%20label%3ACherryPickApproved).
+
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): flush pending persistent queue data to chunk file before updating the metadata. This prevents the metadata writer offset from getting ahead of the chunk file size and avoids losing the persistent queue after an unclean shutdown. See [#11192](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11192).
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): fix a possible data race when processing OpenTelemetry metadata. See [#11238](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11238). Thanks to @nevgeny for contribution.
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): atomically write persistent queue metainfo to prevent possible file corruption on ungraceful shutdown. See [#11192](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11192).
+* BUGFIX: [vmbackup](https://docs.victoriametrics.com/victoriametrics/vmbackup/) and [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/): retry S3 requests failing with `HTTP 429` status code or `TooManyRequests` error code. Previously such requests were not retried, so a short burst of rate limiting would fail the whole backup. See [#11218](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11218). Thanks to @gautamrizwani for contribution.
+* BUGFIX: `vmselect` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): properly apply limit to metrics metadata response. See [#11139](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11139).
+* BUGFIX: `vminsert` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/): Now drops metadata blocks when communicating with vmstorage nodes over the legacy RPC protocol. To avoid this limitation, upgrade `vmstorage` to a version that supports the new RPC protocol (>= [v1.137.0](https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/docs/victoriametrics/changelog/CHANGELOG.md#v11370)). See [#11146](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11146).
+* BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): keep only one header navigation dropdown (`Explore`, `Tools`) open at a time. Previously, hovering across two dropdowns could briefly leave both open due to the close delay. See [#11224](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11224). Thanks to @antedotee for contribution.
+* BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): preserve newline formatting in alert and rule annotations on the Alerting page. See [#11171](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/11171).
+* BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): hide `Total metric names` stats on [Cardinality Explorer](https://docs.victoriametrics.com/victoriametrics/#cardinality-explorer) page when user selects a specific metric or label to focus. See [#11154](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11154) for details. Thanks to @lghuy05 for the contribution.
+* BUGFIX: [vmauth](https://docs.victoriametrics.com/victoriametrics/vmauth/): return `408 Request Timeout` instead of `400 Bad Request` when the request body isn't received within `-maxQueueDuration`. This prevents `vmagent` from incorrectly downgrading the remote write protocol and dropping data when `vmauth` is used as a proxy for a remote write endpoint. See [#11272](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11272).
+
 ## [v1.136.13](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.136.13)
 
 Released at 2026-07-03
@@ -745,6 +780,18 @@ See changes [here](https://docs.victoriametrics.com/victoriametrics/changelog/ch
 
 See changes [here](https://docs.victoriametrics.com/victoriametrics/changelog/changelog_2025/#v11230)
 
+## [v1.122.27](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.122.27)
+
+Released at 2026-07-17
+
+**v1.122.x is a line of [LTS releases](https://docs.victoriametrics.com/victoriametrics/lts-releases/). It contains important up-to-date bugfixes for [VictoriaMetrics enterprise](https://docs.victoriametrics.com/victoriametrics/enterprise/).
+All these fixes are also included in [the latest community release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/latest).
+The v1.122.x line will be supported for at least 12 months since [v1.122.0](https://docs.victoriametrics.com/victoriametrics/changelog/#v11220) release**
+
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/): flush pending persistent queue data to chunk file before updating the metadata. This prevents the metadata writer offset from getting ahead of the chunk file size and avoids losing the persistent queue after an unclean shutdown. See [#11192](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11192).
+* BUGFIX: [vmbackup](https://docs.victoriametrics.com/victoriametrics/vmbackup/) and [vmbackupmanager](https://docs.victoriametrics.com/victoriametrics/vmbackupmanager/): retry S3 requests failing with `HTTP 429` status code or `TooManyRequests` error code. Previously such requests were not retried, so a short burst of rate limiting would fail the whole backup. See [#11218](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11218). Thanks to @gautamrizwani for contribution.
+* BUGFIX: [vmui](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#vmui): hide `Total metric names` stats on [Cardinality Explorer](https://docs.victoriametrics.com/victoriametrics/#cardinality-explorer) page when user selects a specific metric or label to focus. See [#11154](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/11154) for details. Thanks to @lghuy05 for the contribution.
+
 ## [v1.122.26](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.122.26)
 
 Released at 2026-07-03

docs/victoriametrics/enterprise.md

@@ -121,7 +121,7 @@ It is allowed to run Enterprise components in [cases listed here](https://docs.v
 Binary releases of Enterprise components are available at [the releases page for VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/latest),
 [the releases page for VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaLogs/releases/latest)
 and [the releases page for VictoriaTraces](https://github.com/VictoriaMetrics/VictoriaTraces/releases/latest).
-Enterprise binaries and packages have `enterprise` suffix in their names. For example, `victoria-metrics-linux-amd64-v1.147.0-enterprise.tar.gz`.
+Enterprise binaries and packages have `enterprise` suffix in their names. For example, `victoria-metrics-linux-amd64-v1.148.0-enterprise.tar.gz`.
 
 In order to run binary release of Enterprise component, please download the `*-enterprise.tar.gz` archive for your OS and architecture
 from the corresponding releases page and unpack it. Then run the unpacked binary.
@@ -139,8 +139,8 @@ For example, the following command runs VictoriaMetrics Enterprise binary with t
 obtained at [this page](https://victoriametrics.com/products/enterprise/trial/):
 
 ```sh
-wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.147.0/victoria-metrics-linux-amd64-v1.147.0-enterprise.tar.gz
-tar -xzf victoria-metrics-linux-amd64-v1.147.0-enterprise.tar.gz
+wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.148.0/victoria-metrics-linux-amd64-v1.148.0-enterprise.tar.gz
+tar -xzf victoria-metrics-linux-amd64-v1.148.0-enterprise.tar.gz
 ./victoria-metrics-prod -license=BASE64_ENCODED_LICENSE_KEY
 ```
 
@@ -155,7 +155,7 @@ Alternatively, VictoriaMetrics Enterprise license can be stored in the file and
 It is allowed to run Enterprise components in [cases listed here](https://docs.victoriametrics.com/victoriametrics/enterprise/#valid-cases-for-victoriametrics-enterprise).
 
 Docker images for Enterprise components are available at [VictoriaMetrics Docker Hub](https://hub.docker.com/u/victoriametrics) and [VictoriaMetrics Quay](https://quay.io/organization/victoriametrics).
-Enterprise docker images have `enterprise` suffix in their names. For example, `victoriametrics/victoria-metrics:v1.147.0-enterprise`.
+Enterprise docker images have `enterprise` suffix in their names. For example, `victoriametrics/victoria-metrics:v1.148.0-enterprise`.
 
 In order to run Docker image of VictoriaMetrics Enterprise component, it is required to provide the license key via the command-line
 flag as described in the [binary-releases](https://docs.victoriametrics.com/victoriametrics/enterprise/#binary-releases) section.
@@ -165,13 +165,13 @@ Enterprise license key can be obtained at [this page](https://victoriametrics.co
 For example, the following command runs VictoriaMetrics Enterprise Docker image with the specified license key:
 
 ```sh
-docker run --name=victoria-metrics victoriametrics/victoria-metrics:v1.147.0-enterprise -license=BASE64_ENCODED_LICENSE_KEY
+docker run --name=victoria-metrics victoriametrics/victoria-metrics:v1.148.0-enterprise -license=BASE64_ENCODED_LICENSE_KEY
 ```
 
 Alternatively, the license code can be stored in the file and then referred via `-licenseFile` command-line flag:
 
 ```sh
-docker run --name=victoria-metrics -v /vm-license:/vm-license  victoriametrics/victoria-metrics:v1.147.0-enterprise -licenseFile=/path/to/vm-license
+docker run --name=victoria-metrics -v /vm-license:/vm-license  victoriametrics/victoria-metrics:v1.148.0-enterprise -licenseFile=/path/to/vm-license
 ```
 
 Example docker-compose configuration:
@@ -181,7 +181,7 @@ version: "3.5"
 services:
   victoriametrics:
     container_name: victoriametrics
-    image: victoriametrics/victoria-metrics:v1.147.0
+    image: victoriametrics/victoria-metrics:v1.148.0
     ports:
       - 8428:8428
     volumes:
@@ -213,7 +213,7 @@ is used to provide the license key in plain-text:
 ```yaml
 server:
   image:
-    tag: v1.147.0-enterprise
+    tag: v1.148.0-enterprise
 
 license:
   key: {BASE64_ENCODED_LICENSE_KEY}
@@ -224,7 +224,7 @@ In order to provide the license key via existing secret, the following values fi
 ```yaml
 server:
   image:
-    tag: v1.147.0-enterprise
+    tag: v1.148.0-enterprise
 
 license:
   secret:
@@ -274,7 +274,7 @@ spec:
   license:
     key: {BASE64_ENCODED_LICENSE_KEY}
   image:
-    tag: v1.147.0-enterprise
+    tag: v1.148.0-enterprise
 ```
 
 In order to provide the license key via an existing secret, the following custom resource is used:
@@ -291,7 +291,7 @@ spec:
       name: vm-license
       key: license
   image:
-    tag: v1.147.0-enterprise
+    tag: v1.148.0-enterprise
 ```
 
 Example secret with license key:
@@ -342,7 +342,7 @@ Builds are available for amd64 and arm64 architectures.
 
 Example archive:
 
-`victoria-metrics-linux-amd64-v1.147.0-enterprise.tar.gz`
+`victoria-metrics-linux-amd64-v1.148.0-enterprise.tar.gz`
 
 Includes:
 
@@ -351,7 +351,7 @@ Includes:
 
 Example Docker image:
 
-`victoriametrics/victoria-metrics:v1.147.0-enterprise-fips` – uses the FIPS-compatible binary and based on `scratch` image.
+`victoriametrics/victoria-metrics:v1.148.0-enterprise-fips` – uses the FIPS-compatible binary and based on `scratch` image.
 
 ## What Happens to Licensed Components When a License Expires
 

docs/victoriametrics/scrape_config_examples.md

@@ -35,8 +35,8 @@ scrape_configs:
 After you created the `scrape.yaml` file, download and unpack [single-node VictoriaMetrics](https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/) to the same directory:
 
 ```sh
-wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.147.0/victoria-metrics-linux-amd64-v1.147.0.tar.gz
-tar xzf victoria-metrics-linux-amd64-v1.147.0.tar.gz
+wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.148.0/victoria-metrics-linux-amd64-v1.148.0.tar.gz
+tar xzf victoria-metrics-linux-amd64-v1.148.0.tar.gz
 ```
 
 Then start VictoriaMetrics and instruct it to scrape targets defined in `scrape.yaml` and save scraped metrics
@@ -150,8 +150,8 @@ Then start [single-node VictoriaMetrics](https://docs.victoriametrics.com/victor
 
 ```yaml
 # Download and unpack single-node VictoriaMetrics
-wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.147.0/victoria-metrics-linux-amd64-v1.147.0.tar.gz
-tar xzf victoria-metrics-linux-amd64-v1.147.0.tar.gz
+wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.148.0/victoria-metrics-linux-amd64-v1.148.0.tar.gz
+tar xzf victoria-metrics-linux-amd64-v1.148.0.tar.gz
 
 # Run single-node VictoriaMetrics with the given scrape.yaml
 ./victoria-metrics-prod -promscrape.config=scrape.yaml

docs/victoriametrics/victoria_metrics_common_flags.md

@@ -188,6 +188,9 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/
      Timezone to use for timestamps in logs. Timezone must be a valid IANA Time Zone. For example: America/New_York, Europe/Berlin, Etc/GMT+3 or Local (default "UTC")
   -loggerWarnsPerSecondLimit int
      Per-second limit on the number of WARN messages. If more than the given number of warns are emitted per second, then the remaining warns are suppressed. Zero values disable the rate limit
+  -maxBackfillAge value
+     The maximum allowed age for the ingested samples with historical timestamps. Samples with timestamps older than now-maxBackfillAge are rejected during data ingestion. By default, or when set to 0, -maxBackfillAge equals to -retentionPeriod, e.g. it is unlimited within the configured retention. This can be useful for limiting ingestion of historical samples, for example, when older data has been moved to another storage tier. See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#retention
+     The following optional suffixes are supported: s (second), h (hour), d (day), w (week), M (month), y (year). If suffix isn't set, then the duration is counted in months (default 0)
   -maxConcurrentInserts int
      The maximum number of concurrent insert requests. Set higher value when clients send data over slow networks. Default value depends on the number of available CPU cores. It should work fine in most cases since it minimizes resource usage. See also -insert.maxQueueDuration (default 2*cgroup.AvailableCPUs())
   -maxIngestionRate int

docs/victoriametrics/vmagent.md

@@ -466,6 +466,43 @@ and `-remoteWrite.streamAggr.config`:
 
 There is also the `-promscrape.configCheckInterval` command-line flag, which can be used to automatically reload configs from the updated `-promscrape.config` file.
 
+## DNS URLs
+
+If `vmagent` encounters URLs with the `dns+` prefix in the hostname (such as `http://dns+some-addr:8428/some/path`), it resolves `some-addr` into IP addresses
+via [DNS A records](https://datatracker.ietf.org/doc/html/rfc1035#section-3.4.1). The port from the original URL is appended to each discovered IP address.
+Each discovered IP address is used for least-loaded balancing of write requests.
+
+DNS URLs are supported in the following places:
+
+* In `-remoteWrite.url` command-line flag. For example, if `victoria-metrics` [DNS A Record](https://datatracker.ietf.org/doc/html/rfc1035#section-3.4.1) record contains
+  `192.168.1.15` IP address, then `-remoteWrite.url=http://dns+victoria-metrics:8428/api/v1/write` is automatically resolved into
+  `-remoteWrite.url=http://192.168.1.15:8428/api/v1/write`.
+
+DNS URLs are useful when client-side HTTP load balancing is needed. A good example
+is a [Kubernetes headless Service](https://kubernetes.io/docs/concepts/services-networking/service/#headless-services),
+which returns multiple IP addresses for a single hostname.
+
+### DNS URLs and HTTPS
+
+When a `dns+` URL uses the `https` scheme, `vmagent` connects to the discovered
+IP addresses directly. This affects [TLS](https://en.wikipedia.org/wiki/Transport_Layer_Security)
+in two ways:
+
+* No [SNI](https://en.wikipedia.org/wiki/Server_Name_Indication) is sent in the TLS handshake,
+  since the connection target is an IP address rather than a hostname.
+* The server certificate is verified against the IP address, so the verification fails
+  unless the certificate contains the corresponding
+  [IP SAN](https://en.wikipedia.org/wiki/Subject_Alternative_Name) entries.
+
+To use `dns+` URLs with HTTPS, pass the original hostname via the `-remoteWrite.tlsServerName`
+command-line flag. It is used both as SNI and as the name the server certificate
+is verified against:
+
+```sh
+-remoteWrite.url=https://dns+victoria-metrics:8428/api/v1/write
+-remoteWrite.tlsServerName=victoria-metrics
+```
+
 ## SRV URLs
 
 If `vmagent` encounters URLs with `srv+` prefix in hostname (such as `http://srv+some-addr/some/path`), then it resolves `some-addr` [DNS SRV](https://en.wikipedia.org/wiki/SRV_record)
@@ -476,7 +513,7 @@ SRV URLs are supported in the following places:
 * In `-remoteWrite.url` command-line flag. For example, if `victoria-metrics` [DNS SRV](https://en.wikipedia.org/wiki/SRV_record) record contains
   `victoria-metrics-host:8428` TCP address, then `-remoteWrite.url=http://srv+victoria-metrics/api/v1/write` is automatically resolved into
   `-remoteWrite.url=http://victoria-metrics-host:8428/api/v1/write`. If the DNS SRV record is resolved into multiple TCP addresses, then `vmagent`
-  uses a randomly chosen address for each connection it establishes to the remote storage.
+   performs per request least-loaded load-balancing.
 
 * In scrape target addresses aka `__address__` label. See [these docs](https://docs.victoriametrics.com/victoriametrics/relabeling/#how-to-modify-scrape-urls-in-targets) for details.
 

docs/victoriametrics/vmalert.md

@@ -546,7 +546,7 @@ tags at [Docker Hub](https://hub.docker.com/r/victoriametrics/vmalert/tags) and
 
 ## Reading rules from object storage
 
-[Enterprise version](https://docs.victoriametrics.com/victoriametrics/enterprise/) of `vmalert` may read alerting and recording rules
+The [Enterprise version](https://docs.victoriametrics.com/victoriametrics/enterprise/) of `vmalert` may read alerting and recording rules
 from object storage:
 
 * `./bin/vmalert -rule=s3://bucket/dir/alert.rules` would read rules from the given path at S3 bucket
@@ -563,6 +563,48 @@ The following [command-line flags](#flags) can be used for fine-tuning access to
 * `-s3.customEndpoint` - custom S3 endpoint for use with S3-compatible storages (e.g. MinIO). S3 is used if not set.
 * `-s3.forcePathStyle` - prefixing endpoint with bucket name when set false, true by default.
 
+### S3 (AWS and S3-compatible)
+
+The following example reads rules from an S3 bucket:
+
+```sh
+./bin/vmalert \
+  -rule=s3://my-alert-bucket/rules/alerts_ \
+  -s3.credsFilePath=/etc/vmalert/aws-credentials \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+For S3-compatible backends such as [MinIO](https://www.min.io/) or [Ceph](https://ceph.io/), add `-s3.customEndpoint`:
+
+```sh
+./bin/vmalert \
+  -rule=s3://victoriametrics-alert-rules/rules_ \
+  -s3.credsFilePath=/etc/vmalert/aws-credentials \
+  -s3.customEndpoint=http://minio.example.local:9000 \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for details on creating IAM users, credentials file format, environment variables, and IAM roles.
+
+### Google Cloud Storage (GCS)
+
+The following example reads rules from a GCS bucket:
+
+```sh
+./bin/vmalert \
+  -rule=gs://my-alert-bucket/rules/alerts_ \
+  -s3.credsFilePath=/etc/vmalert/gcp-service-account.json \
+  -datasource.url=http://vmselect:8481/select/0/prometheus \
+  -notifier.url=http://alertmanager:9093 \
+  -licenseFile=/etc/vm-license
+```
+
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for details on creating service accounts and downloading JSON keys.
+
 ## Topology examples
 
 The following sections are showing how `vmalert` may be used and configured
@@ -1470,6 +1512,59 @@ alert_relabel_configs:
 
 The configuration file can be [hot-reloaded](#hot-config-reload).
 
+## DNS URLs
+
+If `vmalert` encounters URLs with the `dns+` prefix in the hostname (such as `http://dns+some-addr:8428/some/path`), it resolves `some-addr` into IP addresses via DNS A/AAAA records.
+The port from the original URL is appended to each discovered IP address.
+Each discovered IP address is used for least-loaded balancing of write requests.
+
+DNS URLs are supported in the following places:
+
+* In `-remoteWrite.url`, `-remoteRead.url` and `-datasource.url` command-line flags. For example, if `victoria-metrics` [DNS A Record](https://datatracker.ietf.org/doc/html/rfc1035#section-3.4.1) record contains
+  `192.168.1.15` IP address, then `-remoteWrite.url=http://dns+victoria-metrics:8428` is automatically resolved into
+  `-remoteWrite.url=http://192.168.1.15:8428`.
+
+DNS URLs are useful when client-side HTTP load balancing is needed. A good example
+is a [Kubernetes headless Service](https://kubernetes.io/docs/concepts/services-networking/service/#headless-services),
+which returns multiple IP addresses for a single hostname.
+
+### DNS URLs and HTTPS
+
+When a `dns+` URL uses the `https` scheme, `vmalert` connects to the discovered
+IP addresses directly. No [SNI](https://en.wikipedia.org/wiki/Server_Name_Indication)
+is sent in the TLS handshake, and the server certificate is verified against the IP address,
+which fails unless the certificate contains the corresponding
+[IP SAN](https://en.wikipedia.org/wiki/Subject_Alternative_Name) entries.
+
+To use `dns+` URLs with HTTPS, pass the original hostname via the corresponding
+`tlsServerName` command-line flag - `-datasource.tlsServerName`, `-remoteRead.tlsServerName`
+or `-remoteWrite.tlsServerName`. It is used both as SNI and as the name the server
+certificate is verified against:
+
+```sh
+-datasource.url=https://dns+victoria-metrics:8428
+-datasource.tlsServerName=victoria-metrics
+```
+
+Alternatively, issue server certificates with IP SAN entries for every backend IP address.
+Avoid `tlsInsecureSkipVerify` flags for working around this, since they disable
+server certificate verification completely.
+
+## SRV URLs
+
+If `vmalert` encounters URLs with `srv+` prefix in hostname (such as `http://srv+some-addr/some/path`), then it resolves `some-addr` [DNS SRV](https://en.wikipedia.org/wiki/SRV_record)
+record into TCP address with hostname and TCP port, and then use the resulting URL when it needs to connect to it.
+
+SRV URLs are supported in the following places:
+
+* In `-remoteWrite.url`, `-remoteRead.url` and `-datasource.url` command-line flags. For example, if `victoria-metrics` [DNS SRV](https://en.wikipedia.org/wiki/SRV_record) record contains
+  `victoria-metrics-host:8085`, then `-remoteWrite.url=http://srv+victoria-metrics:8428` is automatically resolved into
+  `-remoteWrite.url=http://victoria-metrics-host:8085`. If the DNS SRV record is resolved into multiple TCP addresses, then `vmalert`
+   performs per request round-robin load-balancing.
+
+SRV URLs are useful when HTTP services run on different TCP ports or when their TCP ports can change over time (for instance, after a restart).
+
+
 ## Contributing
 
 `vmalert` is mostly designed and built by VictoriaMetrics community.

docs/victoriametrics/vmbackup.md

@@ -204,61 +204,45 @@ See [this article](https://medium.com/@valyala/speeding-up-backups-for-big-time-
 
 ### Providing credentials as a file
 
-Obtaining credentials from a file.
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for instructions on obtaining credentials and providing them via credential files, environment variables, cloud provider metadata service, or Kubernetes secrets and IAM roles.
 
-Add flag `-credsFilePath=/etc/credentials` with the following content:
+The following examples show the most common authentication patterns for each storage provider.
 
-* for S3 (AWS, MinIO or other S3 compatible storages):
+#### S3 (AWS and S3-compatible)
 
-     ```sh
-     [default]
-     aws_access_key_id=theaccesskey
-     aws_secret_access_key=thesecretaccesskeyvalue
-    ```
+```sh
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=s3://victoriametrics-backup/backup01 \
+  -credsFilePath=/etc/credentials
+```
 
-* for GCP cloud storage:
+#### Google Cloud Storage (GCS)
 
-    ```json
-    {
-           "type": "service_account",
-           "project_id": "project-id",
-           "private_key_id": "key-id",
-           "private_key": "-----BEGIN PRIVATE KEY-----\nprivate-key\n-----END PRIVATE KEY-----\n",
-           "client_email": "service-account-email",
-           "client_id": "client-id",
-           "auth_uri": "https://accounts.google.com/o/oauth2/auth",
-           "token_uri": "https://accounts.google.com/o/oauth2/token",
-           "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
-           "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/service-account-email"
-    }
-    ```
+```sh
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=gs://victoriametrics-backup/backup01 \
+  -credsFilePath=/etc/credentials
+```
 
-### Providing credentials via env variables
+#### Azure Blob Storage
 
-Obtaining credentials from env variables.
+```sh
+export AZURE_STORAGE_ACCOUNT_NAME=mystorageaccount
+export AZURE_STORAGE_ACCOUNT_KEY=myaccountkey
 
-* For AWS S3 compatible storages set env variable `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`.
-  Also you can set env variable `AWS_SHARED_CREDENTIALS_FILE` with path to credentials file.
-* For GCE cloud storage set env variable `GOOGLE_APPLICATION_CREDENTIALS` with path to credentials file.
-* For Azure storage use one of these env variables:
-  * `AZURE_STORAGE_ACCOUNT_CONNECTION_STRING`: use a connection string (must be either SAS Token or Account/Key)
-  * `AZURE_STORAGE_ACCOUNT_NAME` and `AZURE_STORAGE_ACCOUNT_KEY`: use a specific account name and key (either primary or secondary)
-  * `AZURE_USE_DEFAULT_CREDENTIAL` and `AZURE_STORAGE_ACCOUNT_NAME`: use the `DefaultAzureCredential` to allow the Azure library
-     to search for multiple options (for example, managed identity related variables). Note that if multiple credentials are available,
-     it is required to specify the `AZURE_CLIENT_ID` to select specific credentials.
-
-  The `AZURE_STORAGE_DOMAIN` can be used for optionally overriding the default domain for the Azure storage service.
-
-Please, note that `vmbackup` will use credentials provided by cloud providers metadata service [when applicable](https://docs.victoriametrics.com/victoriametrics/vmbackup/#using-cloud-providers-metadata-service).
-
-### Using cloud providers metadata service
-
-`vmbackup` and `vmbackupmanager` will automatically use cloud providers metadata service in order to obtain credentials if they are running in cloud environment and credentials are not explicitly provided via flags or env variables.
+vmbackup \
+  -storageDataPath=/data \
+  -snapshot.createURL=http://localhost:8428/snapshot/create \
+  -dst=azblob://victoriametrics-backup/backup01
+```
 
 ### Providing credentials in Kubernetes
 
-The simplest way to provide credentials in Kubernetes is to use [Secrets](https://kubernetes.io/docs/concepts/configuration/secret/)
-and inject them into the pod as environment variables. For example, the following secret can be used for AWS S3 credentials:
+The simplest way to provide credentials in Kubernetes is to use [Secrets](https://kubernetes.io/docs/concepts/configuration/secret/) and inject them into the pod as environment variables. For example, the following secret can be used for AWS S3 credentials:
 
 ```yaml
 apiVersion: v1
@@ -266,14 +250,13 @@ kind: Secret
 metadata:
   name: vmbackup-credentials
 data:
-  access_key: key
-  secret_key: secret
+  access_key: <base64-encoded-key>
+  secret_key: <base64-encoded-secret>
 ```
 
 And then it can be injected into the pod as environment variables:
 
 ```yaml
-...
 env:
 - name: AWS_ACCESS_KEY_ID
   valueFrom:
@@ -285,7 +268,6 @@ env:
     secretKeyRef:
       key: secret_key
       name: vmbackup-credentials
-...
 ```
 
 A more secure way is to use IAM roles to provide tokens for pods instead of managing credentials manually.

docs/victoriametrics/vmbackupmanager.md

@@ -88,34 +88,21 @@ There are two flags which could help with performance tuning:
 
 ### Example of Usage
 
-GCS and cluster version. You need to have a credentials file in json format with following structure:
-
-credentials.json
-
-```json
-{
-  "type": "service_account",
-  "project_id": "<project>",
-  "private_key_id": "",
-  "private_key": "-----BEGIN PRIVATE KEY-----\-----END PRIVATE KEY-----\n",
-  "client_email": "test@<project>.iam.gserviceaccount.com",
-  "client_id": "",
-  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
-  "token_uri": "https://oauth2.googleapis.com/token",
-  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
-  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/test%40<project>.iam.gserviceaccount.com"
-}
-
-```
-
-Backup manager launched with the following configuration:
+The following command backs up data to a GCS bucket:
 
 ```sh
 export NODE_IP=192.168.0.10
 export VMSTORAGE_ENDPOINT=http://127.0.0.1:8428
-./vmbackupmanager -dst=gs://vmstorage-data/$NODE_IP -credsFilePath=credentials.json -storageDataPath=/vmstorage-data -snapshot.createURL=$VMSTORAGE_ENDPOINT/snapshot/create -licenseFile=/path/to/vm-license
+./vmbackupmanager \
+  -dst=gs://vmstorage-data/$NODE_IP \
+  -credsFilePath=credentials.json \
+  -storageDataPath=/vmstorage-data \
+  -snapshot.createURL=$VMSTORAGE_ENDPOINT/snapshot/create \
+  -licenseFile=/path/to/vm-license
 ```
 
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for instructions on obtaining credentials and configuring access to S3, GCS, and Azure Blob Storage.
+
 Expected logs in vmbackupmanager:
 
 ```sh
@@ -147,8 +134,7 @@ objects. Typical object storage systems implement server-side copy by creating n
 This is very fast and efficient. Unfortunately there are systems such as [S3 Glacier](https://aws.amazon.com/s3/storage-classes/glacier/),
 which perform full object copy during server-side copying. This may be slow and expensive.
 
-Please, see [vmbackup docs](https://docs.victoriametrics.com/victoriametrics/vmbackup/#advanced-usage) for more examples of authentication with different
-storage types.
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for more examples of authentication with different storage types.
 
 ### Backup Retention Policy
 
@@ -492,6 +478,12 @@ Clusters here are referred to as `source` and `destination`.
 
 `vmbackupmanager` exports various metrics in Prometheus exposition format at `http://vmbackupmanager:8300/metrics` page. It is recommended to set up regular scraping of this page either via [vmagent](https://docs.victoriametrics.com/victoriametrics/vmagent/) or via Prometheus, so the exported metrics could be analyzed later.
 
+To verify that `vmbackupmanager` is executing backup tasks normally, the following metrics can help:
+
+* `vm_backup_last_success_at{type="<backup_type>"}` - unix timestamp of the last successful backup{{% available_from "#" %}}. Remains `0` if no backup has completed successfully since startup. Check error logs and verify remote storage accessibility if this persists.
+* `vm_backup_last_run_failed{type="<backup_type>"}` - whether the last backup task for the given backup type failed. The value `1` means the last task failed. Check the error logs of `vmbackupmanager` for the root cause
+* `vm_backup_errors_total{type="<backup_type>"}` - total number of backup errors for the given backup type.
+
 Use the official [Grafana dashboard](https://grafana.com/grafana/dashboards/17798) for `vmbackupmanager` overview.
 Graphs on this dashboard contain useful hints - hover the `i` icon in the top left corner of each graph in order to read it.
 If you have suggestions for improvements or have found a bug - please open an issue on github or add a review to the dashboard.

docs/victoriametrics/vmctl/vmctl.md

@@ -34,9 +34,9 @@ vmctl command-line tool is available as:
 
 Download and unpack vmctl:
 ```sh
-wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.147.0/vmutils-darwin-arm64-v1.147.0.tar.gz
+wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.148.0/vmutils-darwin-arm64-v1.148.0.tar.gz
 
-tar xzf vmutils-darwin-arm64-v1.147.0.tar.gz
+tar xzf vmutils-darwin-arm64-v1.148.0.tar.gz
 ```
 
 Once binary is unpacked, see the full list of supported modes by running the following command:

docs/victoriametrics/vmrestore.md

@@ -47,13 +47,13 @@ i.e. the end result would be similar to [rsync --delete](https://askubuntu.com/q
 
 ## Troubleshooting
 
-* See [how to setup credentials via environment variables](https://docs.victoriametrics.com/victoriametrics/vmbackup/#providing-credentials-via-env-variables).
+* See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for instructions on configuring credentials.
 * If `vmrestore` consumes all the network bandwidth, then set `-maxBytesPerSecond` to the desired value.
 * If `vmrestore` has been interrupted due to temporary error, then just restart it with the same args. It will resume the restore process.
 
 ## Advanced usage
 
-Please, see [vmbackup docs](https://docs.victoriametrics.com/victoriametrics/vmbackup/#advanced-usage) for examples of authentication
+See [Connecting VM components to cloud storage](https://docs.victoriametrics.com/guides/connecting-vm-components-to-cloud-storage/) for examples of authentication
 with different storage types.
 
 Run `vmrestore -help` in order to see all the available options:

docs/victoriametrics/vmselect_common_flags.md

@@ -41,6 +41,8 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/cluster-victori
      Flag value can be read from the given http/https url when using -deleteAuthKey=http://host/path or -deleteAuthKey=https://host/path
   -denyQueryTracing
      Whether to disable the ability to trace queries. See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#query-tracing
+  -enableMetadata
+     Whether to enable metadata processing for metrics scraped from targets, received via VictoriaMetrics remote write, Prometheus remote write v1 or OpenTelemetry protocol. See also remoteWrite.maxMetadataPerBlock (default true)
   -enableMultitenancyViaHeaders
      Enables multitenancy via HTTP headers. See https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#multitenancy-via-headers
   -enableTCP6
@@ -103,6 +105,8 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/cluster-victori
      Whether to use proxy protocol for connections accepted at the given -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt . With enabled proxy protocol http server cannot serve regular /metrics endpoint. Use -pushmetrics.url for metrics pushing
      Supports array of values separated by comma or specified via multiple flags.
      Empty values are set to false.
+  -insert.maxQueueDuration duration
+     The maximum duration to wait in the queue when -maxConcurrentInserts concurrent insert requests are executed (default 1m0s)
   -internStringCacheExpireDuration duration
      The expiry duration for caches for interned strings. See https://en.wikipedia.org/wiki/String_interning . See also -internStringMaxLen and -internStringDisableCache (default 6m0s)
   -internStringDisableCache
@@ -127,6 +131,8 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/cluster-victori
      Timezone to use for timestamps in logs. Timezone must be a valid IANA Time Zone. For example: America/New_York, Europe/Berlin, Etc/GMT+3 or Local (default "UTC")
   -loggerWarnsPerSecondLimit int
      Per-second limit on the number of WARN messages. If more than the given number of warns are emitted per second, then the remaining warns are suppressed. Zero values disable the rate limit
+  -maxConcurrentInserts int
+     The maximum number of concurrent insert requests. Set higher value when clients send data over slow networks. Default value depends on the number of available CPU cores. It should work fine in most cases since it minimizes resource usage. See also -insert.maxQueueDuration (default 24)
   -memory.allowedBytes size
      Allowed size of system memory VictoriaMetrics caches may occupy. This option overrides -memory.allowedPercent if set to a non-zero value. Too low a value may increase the cache miss rate usually resulting in higher CPU and disk IO usage. Too high a value may evict too much data from the OS page cache resulting in higher disk IO usage. The process may behave unexpectedly if this flag is set too small (e.g., 1 byte).
      Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 0)
@@ -148,6 +154,119 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/cluster-victori
      Flag value can be read from the given http/https url when using -pprofAuthKey=http://host/path or -pprofAuthKey=https://host/path
   -prevCacheRemovalPercent float
      Items in the previous caches are removed when the percent of requests it serves becomes lower than this value. Higher values reduce memory usage at the cost of higher CPU usage. See also -cacheExpireDuration (default 0.1)
+  -promscrape.azureSDCheckInterval duration
+     Interval for checking for changes in Azure. This works only if azure_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#azure_sd_configs for details (default 1m0s)
+  -promscrape.cluster.memberLabel string
+     If non-empty, then the label with this name and the -promscrape.cluster.memberNum value is added to all the scraped metrics. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info
+  -promscrape.cluster.memberNum string
+     The number of vmagent instance in the cluster of scrapers. It must be a unique value in the range 0 ... promscrape.cluster.membersCount-1 across scrapers in the cluster. Can be specified as pod name of Kubernetes StatefulSet - pod-name-Num, where Num is a numeric part of pod name. See also -promscrape.cluster.memberLabel . See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info (default "0")
+  -promscrape.cluster.memberURLTemplate string
+     An optional template for URL to access vmagent instance with the given -promscrape.cluster.memberNum value. Every %d occurrence in the template is substituted with -promscrape.cluster.memberNum at urls to vmagent instances responsible for scraping the given target at /service-discovery page. For example -promscrape.cluster.memberURLTemplate='http://vmagent-%d:8429/targets'. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more details
+  -promscrape.cluster.membersCount int
+     The number of members in a cluster of scrapers. Each member must have a unique -promscrape.cluster.memberNum in the range 0 ... promscrape.cluster.membersCount-1 . Each member then scrapes roughly 1/N of all the targets. By default, cluster scraping is disabled, i.e. a single scraper scrapes all the targets. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info (default 1)
+  -promscrape.cluster.name string
+     Optional name of the cluster. If multiple vmagent clusters scrape the same targets, then each cluster must have unique name in order to properly de-duplicate samples received from these clusters. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info
+  -promscrape.cluster.replicationFactor int
+     The number of members in the cluster, which scrape the same targets. If the replication factor is greater than 1, then the deduplication must be enabled at remote storage side. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info (default 1)
+  -promscrape.cluster.shardByLabels array
+     Optional list of target labels, which will be used for sharding targets among cluster members if -promscrape.cluster.membersCount is greater than 1. If none of the specified labels are found in a target, then all the target labels will be used for sharding. See https://docs.victoriametrics.com/victoriametrics/vmagent/#scraping-big-number-of-targets for more info
+     Supports an array of values separated by comma or specified via multiple flags.
+     Each array item can contain comma inside single-quoted or double-quoted string, {}, [] and () braces.
+  -promscrape.config string
+     Optional path to Prometheus config file with 'scrape_configs' section containing targets to scrape. The path can point to local file and to http url. See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#how-to-scrape-prometheus-exporters-such-as-node-exporter for details
+  -promscrape.config.dryRun
+     Checks -promscrape.config file for errors and unsupported fields and then exits. Returns non-zero exit code on parsing errors and emits these errors to stderr. See also -promscrape.config.strictParse command-line flag. Pass -loggerLevel=ERROR if you don't need to see info messages in the output.
+  -promscrape.config.strictParse
+     Whether to deny unsupported fields in -promscrape.config . Set to false in order to silently skip unsupported fields (default true)
+  -promscrape.configCheckInterval duration
+     Interval for checking for changes in -promscrape.config file. By default, the checking is disabled. See how to reload -promscrape.config file at https://docs.victoriametrics.com/victoriametrics/vmagent/#configuration-update
+  -promscrape.consul.waitTime duration
+     Wait time used by Consul service discovery. Default value is used if not set
+  -promscrape.consulSDCheckInterval duration
+     Interval for checking for changes in Consul. This works only if consul_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#consul_sd_configs for details (default 30s)
+  -promscrape.consulagentSDCheckInterval duration
+     Interval for checking for changes in Consul Agent. This works only if consulagent_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#consulagent_sd_configs for details (default 30s)
+  -promscrape.digitaloceanSDCheckInterval duration
+     Interval for checking for changes in digital ocean. This works only if digitalocean_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#digitalocean_sd_configs for details (default 1m0s)
+  -promscrape.disableCompression
+     Whether to disable sending 'Accept-Encoding: gzip' request headers to all the scrape targets. This may reduce CPU usage on scrape targets at the cost of higher network bandwidth utilization. It is possible to set 'disable_compression: true' individually per each 'scrape_config' section in '-promscrape.config' for fine-grained control
+  -promscrape.disableKeepAlive
+     Whether to disable HTTP keep-alive connections when scraping all the targets. This may be useful when targets has no support for HTTP keep-alive connection. It is possible to set 'disable_keepalive: true' individually per each 'scrape_config' section in '-promscrape.config' for fine-grained control. Note that disabling HTTP keep-alive may increase load on both vmagent and scrape targets
+  -promscrape.discovery.concurrency int
+     The maximum number of concurrent requests to Prometheus autodiscovery API (Consul, Kubernetes, etc.) (default 100)
+  -promscrape.discovery.concurrentWaitTime duration
+     The maximum duration for waiting to perform API requests if more than -promscrape.discovery.concurrency requests are simultaneously performed (default 1m0s)
+  -promscrape.dnsSDCheckInterval duration
+     Interval for checking for changes in dns. This works only if dns_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#dns_sd_configs for details (default 30s)
+  -promscrape.dockerSDCheckInterval duration
+     Interval for checking for changes in docker. This works only if docker_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#docker_sd_configs for details (default 30s)
+  -promscrape.dockerswarmSDCheckInterval duration
+     Interval for checking for changes in dockerswarm. This works only if dockerswarm_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#dockerswarm_sd_configs for details (default 30s)
+  -promscrape.dropOriginalLabels
+     Whether to drop original labels for scrape targets at /targets and /api/v1/targets pages. This may be needed for reducing memory usage when original labels for big number of scrape targets occupy big amounts of memory. Note that this reduces debuggability for improper per-target relabeling configs
+  -promscrape.ec2SDCheckInterval duration
+     Interval for checking for changes in ec2. This works only if ec2_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#ec2_sd_configs for details (default 1m0s)
+  -promscrape.eurekaSDCheckInterval duration
+     Interval for checking for changes in eureka. This works only if eureka_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#eureka_sd_configs for details (default 30s)
+  -promscrape.fileSDCheckInterval duration
+     Interval for checking for changes in 'file_sd_config'. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#file_sd_configs for details (default 1m0s)
+  -promscrape.gceSDCheckInterval duration
+     Interval for checking for changes in gce. This works only if gce_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#gce_sd_configs for details (default 1m0s)
+  -promscrape.hetznerSDCheckInterval duration
+     Interval for checking for changes in Hetzner API. This works only if hetzner_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#hetzner_sd_configs for details (default 1m0s)
+  -promscrape.httpSDCheckInterval duration
+     Interval for checking for changes in http endpoint service discovery. This works only if http_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#http_sd_configs for details (default 1m0s)
+  -promscrape.kubernetes.apiServerTimeout duration
+     How frequently to reload the full state from Kubernetes API server (default 30m0s)
+  -promscrape.kubernetes.attachNamespaceMetadataAll
+     Whether to set attach_metadata.namespace=true for all the kubernetes_sd_configs at -promscrape.config . It is possible to set attach_metadata.namespace=false individually per each kubernetes_sd_configs . See https://docs.victoriametrics.com/victoriametrics/sd_configs/#kubernetes_sd_configs
+  -promscrape.kubernetes.attachNodeMetadataAll
+     Whether to set attach_metadata.node=true for all the kubernetes_sd_configs at -promscrape.config . It is possible to set attach_metadata.node=false individually per each kubernetes_sd_configs . See https://docs.victoriametrics.com/victoriametrics/sd_configs/#kubernetes_sd_configs
+  -promscrape.kubernetes.useHTTP2Client
+     Whether to use HTTP/2 client for connection to Kubernetes API server. This may reduce amount of concurrent connections to API server when watching for a big number of Kubernetes objects.
+  -promscrape.kubernetesSDCheckInterval duration
+     Interval for checking for changes in Kubernetes API server. This works only if kubernetes_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#kubernetes_sd_configs for details (default 30s)
+  -promscrape.kumaSDCheckInterval duration
+     Interval for checking for changes in kuma service discovery. This works only if kuma_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#kuma_sd_configs for details (default 30s)
+  -promscrape.marathonSDCheckInterval duration
+     Interval for checking for changes in Marathon REST API. This works only if marathon_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#marathon_sd_configs for details (default 30s)
+  -promscrape.maxDroppedTargets int
+     The maximum number of droppedTargets to show at /api/v1/targets page. Increase this value if your setup drops more scrape targets during relabeling and you need investigating labels for all the dropped targets. Note that the increased number of tracked dropped targets may result in increased memory usage (default 10000)
+  -promscrape.maxResponseHeadersSize size
+     The maximum size of http response headers from Prometheus scrape targets
+     Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 4096)
+  -promscrape.maxScrapeSize size
+     The maximum size of uncompressed scrape response in bytes to process from Prometheus targets. Bigger uncompressed responses are rejected. See also max_scrape_size option at https://docs.victoriametrics.com/victoriametrics/sd_configs/#scrape_configs
+     Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 16777216)
+  -promscrape.minResponseSizeForStreamParse size
+     The minimum target response size for automatic switching to stream parsing mode, which can reduce memory usage. See https://docs.victoriametrics.com/victoriametrics/vmagent/#stream-parsing-mode
+     Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 1000000)
+  -promscrape.noStaleMarkers
+     Whether to disable sending Prometheus stale markers for metrics when scrape target disappears. This option may reduce memory usage if stale markers aren't needed for your setup. This option also disables populating the scrape_series_added metric. See https://prometheus.io/docs/concepts/jobs_instances/#automatically-generated-labels-and-time-series
+  -promscrape.nomad.waitTime duration
+     Wait time used by Nomad service discovery. Default value is used if not set
+  -promscrape.nomadSDCheckInterval duration
+     Interval for checking for changes in Nomad. This works only if nomad_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#nomad_sd_configs for details (default 30s)
+  -promscrape.openstackSDCheckInterval duration
+     Interval for checking for changes in openstack API server. This works only if openstack_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#openstack_sd_configs for details (default 30s)
+  -promscrape.ovhcloudSDCheckInterval duration
+     Interval for checking for changes in OVH Cloud API. This works only if ovhcloud_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#ovhcloud_sd_configs for details (default 30s)
+  -promscrape.puppetdbSDCheckInterval duration
+     Interval for checking for changes in PuppetDB API. This works only if puppetdb_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#puppetdb_sd_configs for details (default 30s)
+  -promscrape.seriesLimitPerTarget int
+     Optional limit on the number of unique time series a single scrape target can expose. See https://docs.victoriametrics.com/victoriametrics/vmagent/#cardinality-limiter for more info
+  -promscrape.streamParse
+     Whether to enable stream parsing for metrics obtained from scrape targets. This may be useful for reducing memory usage when millions of metrics are exposed per each scrape target. It is possible to set 'stream_parse: true' individually per each 'scrape_config' section in '-promscrape.config' for fine-grained control
+  -promscrape.suppressDuplicateScrapeTargetErrors
+     Whether to suppress 'duplicate scrape target' errors; see https://docs.victoriametrics.com/victoriametrics/vmagent/#troubleshooting for details
+  -promscrape.suppressScrapeErrors
+     Whether to suppress scrape errors logging. The last error for each target is always available at '/targets' page even if scrape errors logging is suppressed. See also -promscrape.suppressScrapeErrorsDelay
+  -promscrape.suppressScrapeErrorsDelay duration
+     The delay for suppressing repeated scrape errors logging per each scrape targets. This may be used for reducing the number of log lines related to scrape errors. See also -promscrape.suppressScrapeErrors
+  -promscrape.vultrSDCheckInterval duration
+     Interval for checking for changes in Vultr. This works only if vultr_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#vultr_sd_configs for details (default 30s)
+  -promscrape.yandexcloudSDCheckInterval duration
+     Interval for checking for changes in Yandex Cloud API. This works only if yandexcloud_sd_configs is configured in '-promscrape.config' file. See https://docs.victoriametrics.com/victoriametrics/sd_configs/#yandexcloud_sd_configs for details (default 30s)
   -pushmetrics.disableCompression
      Whether to disable request body compression when pushing metrics to every -pushmetrics.url
   -pushmetrics.extraLabel array

docs/victoriametrics/vmstorage_common_flags.md

@@ -130,6 +130,9 @@ See the docs at https://docs.victoriametrics.com/victoriametrics/cluster-victori
      Timezone to use for timestamps in logs. Timezone must be a valid IANA Time Zone. For example: America/New_York, Europe/Berlin, Etc/GMT+3 or Local (default "UTC")
   -loggerWarnsPerSecondLimit int
      Per-second limit on the number of WARN messages. If more than the given number of warns are emitted per second, then the remaining warns are suppressed. Zero values disable the rate limit
+  -maxBackfillAge value
+     The maximum allowed age for the ingested samples with historical timestamps. Samples with timestamps older than now-maxBackfillAge are rejected during data ingestion. By default, or when set to 0, -maxBackfillAge equals to -retentionPeriod, e.g. it is unlimited within the configured retention. This can be useful for limiting ingestion of historical samples, for example, when older data has been moved to another storage tier. See https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#retention
+     The following optional suffixes are supported: s (second), h (hour), d (day), w (week), M (month), y (year). If suffix isn't set, then the duration is counted in months (default 0)
   -maxConcurrentInserts int
      The maximum number of concurrent insert requests. Set higher value when clients send data over slow networks. Default value depends on the number of available CPU cores. It should work fine in most cases since it minimizes resource usage. See also -insert.maxQueueDuration (default 2*cgroup.AvailableCPUs())
   -memory.allowedBytes size

go.mod

@@ -3,7 +3,7 @@ module github.com/VictoriaMetrics/VictoriaMetrics
 go 1.26.5
 
 require (
-	cloud.google.com/go/storage v1.62.3
+	cloud.google.com/go/storage v1.64.0
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.22.0
 	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.14.0
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.8.0
@@ -12,65 +12,65 @@ require (
 	github.com/VictoriaMetrics/fastcache v1.13.3
 	github.com/VictoriaMetrics/metrics v1.44.0
 	github.com/VictoriaMetrics/metricsql v0.87.3
-	github.com/aws/aws-sdk-go-v2 v1.42.0
-	github.com/aws/aws-sdk-go-v2/config v1.32.25
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.27
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.103.3
+	github.com/aws/aws-sdk-go-v2 v1.43.0
+	github.com/aws/aws-sdk-go-v2/config v1.32.31
+	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.35
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.106.0
 	github.com/bmatcuk/doublestar/v4 v4.10.0
 	github.com/cespare/xxhash/v2 v2.3.0
-	github.com/cheggaaa/pb/v3 v3.1.7
+	github.com/cheggaaa/pb/v3 v3.2.0
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/snappy v1.0.0
 	github.com/google/go-cmp v0.7.0
-	github.com/googleapis/gax-go/v2 v2.22.0
+	github.com/googleapis/gax-go/v2 v2.23.0
 	github.com/influxdata/influxdb v1.12.4
-	github.com/klauspost/compress v1.18.6
+	github.com/klauspost/compress v1.19.1
 	github.com/oklog/ulid/v2 v2.1.1
-	github.com/prometheus/prometheus v0.312.0
+	github.com/prometheus/prometheus v0.313.1
 	github.com/urfave/cli/v2 v2.27.7
 	github.com/valyala/fastjson v1.6.10
 	github.com/valyala/fastrand v1.1.0
 	github.com/valyala/fasttemplate v1.2.2
-	github.com/valyala/gozstd v1.24.0
+	github.com/valyala/gozstd v1.25.0
 	github.com/valyala/histogram v1.2.0
 	github.com/valyala/quicktemplate v1.8.0
-	golang.org/x/net v0.56.0
+	golang.org/x/net v0.57.0
 	golang.org/x/oauth2 v0.36.0
 	golang.org/x/sys v0.47.0
-	google.golang.org/api v0.284.0
+	google.golang.org/api v0.290.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
 require (
 	cel.dev/expr v0.25.2 // indirect
 	cloud.google.com/go v0.123.0 // indirect
-	cloud.google.com/go/auth v0.20.0 // indirect
+	cloud.google.com/go/auth v0.22.0 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
 	cloud.google.com/go/compute/metadata v0.9.0 // indirect
-	cloud.google.com/go/iam v1.11.0 // indirect
-	cloud.google.com/go/monitoring v1.29.0 // indirect
+	cloud.google.com/go/iam v1.12.0 // indirect
+	cloud.google.com/go/monitoring v1.30.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.12.0 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.7.2 // indirect
-	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.33.0 // indirect
-	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.57.0 // indirect
-	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.57.0 // indirect
+	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.34.0 // indirect
+	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.58.0 // indirect
+	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.58.0 // indirect
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b // indirect
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.13 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.19.24 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.29 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.29 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.29 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.30 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.12 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.22 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.29 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.29 // indirect
-	github.com/aws/aws-sdk-go-v2/service/signin v1.2.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.31.3 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.6 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.43.3 // indirect
-	github.com/aws/smithy-go v1.27.2 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.14 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.30 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.31 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.31 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.31 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.32 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.13 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.24 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.31 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.32 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.5.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.33.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.38.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.45.0 // indirect
+	github.com/aws/smithy-go v1.27.4 // indirect
 	github.com/bboreham/go-loser v0.0.0-20230920113527-fcc2c21820a3 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
@@ -85,14 +85,14 @@ require (
 	github.com/felixge/httpsnoop v1.1.0 // indirect
 	github.com/fxamacker/cbor/v2 v2.9.2 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.4 // indirect
-	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/logr v1.4.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/golang-jwt/jwt/v5 v5.3.1 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.16 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.18 // indirect
 	github.com/grafana/regexp v0.0.0-20250905093917-f7b3be9d1853 // indirect
 	github.com/hashicorp/go-version v1.9.0 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
@@ -102,7 +102,7 @@ require (
 	github.com/knadh/koanf/v2 v2.3.5 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/mattn/go-colorable v0.1.15 // indirect
-	github.com/mattn/go-isatty v0.0.22 // indirect
+	github.com/mattn/go-isatty v0.0.23 // indirect
 	github.com/mattn/go-runewidth v0.0.24 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
@@ -110,36 +110,36 @@ require (
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
-	github.com/open-telemetry/opentelemetry-collector-contrib/internal/exp/metrics v0.154.0 // indirect
-	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil v0.154.0 // indirect
-	github.com/open-telemetry/opentelemetry-collector-contrib/processor/deltatocumulativeprocessor v0.154.0 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/internal/exp/metrics v0.157.0 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil v0.157.0 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/processor/deltatocumulativeprocessor v0.157.0 // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/client_golang v1.23.2 // indirect
-	github.com/prometheus/client_golang/exp v0.0.0-20260602051030-3537b20ac86b // indirect
+	github.com/prometheus/client_golang v1.24.0 // indirect
+	github.com/prometheus/client_golang/exp v0.0.0-20260723095000-436bf2e0fb60 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.68.1 // indirect
+	github.com/prometheus/common v0.70.1 // indirect
 	github.com/prometheus/otlptranslator v1.0.0 // indirect
-	github.com/prometheus/procfs v0.20.1 // indirect
+	github.com/prometheus/procfs v0.21.1 // indirect
 	github.com/prometheus/sigv4 v0.4.1 // indirect
 	github.com/puzpuzpuz/xsync/v4 v4.5.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/spiffe/go-spiffe/v2 v2.7.0 // indirect
+	github.com/spiffe/go-spiffe/v2 v2.8.1 // indirect
 	github.com/stretchr/testify v1.11.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xrash/smetrics v0.0.0-20250705151800-55b8f293f342 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/collector/component v1.60.0 // indirect
-	go.opentelemetry.io/collector/confmap v1.60.0 // indirect
-	go.opentelemetry.io/collector/confmap/xconfmap v0.154.0 // indirect
-	go.opentelemetry.io/collector/consumer v1.60.0 // indirect
-	go.opentelemetry.io/collector/featuregate v1.60.0 // indirect
-	go.opentelemetry.io/collector/internal/componentalias v0.154.0 // indirect
-	go.opentelemetry.io/collector/pdata v1.60.0 // indirect
-	go.opentelemetry.io/collector/pipeline v1.60.0 // indirect
-	go.opentelemetry.io/collector/processor v1.60.0 // indirect
+	go.opentelemetry.io/collector/component v1.63.0 // indirect
+	go.opentelemetry.io/collector/confmap v1.63.0 // indirect
+	go.opentelemetry.io/collector/confmap/xconfmap v0.157.0 // indirect
+	go.opentelemetry.io/collector/consumer v1.63.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.63.0 // indirect
+	go.opentelemetry.io/collector/internal/componentalias v0.157.0 // indirect
+	go.opentelemetry.io/collector/pdata v1.63.0 // indirect
+	go.opentelemetry.io/collector/pipeline v1.63.0 // indirect
+	go.opentelemetry.io/collector/processor v1.63.0 // indirect
 	go.opentelemetry.io/contrib/detectors/gcp v1.44.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.69.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.69.0 // indirect
@@ -155,26 +155,26 @@ require (
 	go.uber.org/zap v1.28.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.4 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/crypto v0.53.0 // indirect
-	golang.org/x/exp v0.0.0-20260611194520-c48552f49976 // indirect
-	golang.org/x/sync v0.21.0 // indirect
-	golang.org/x/term v0.44.0 // indirect
-	golang.org/x/text v0.38.0 // indirect
+	golang.org/x/crypto v0.54.0 // indirect
+	golang.org/x/exp v0.0.0-20260718201538-764159d718ef // indirect
+	golang.org/x/sync v0.22.0 // indirect
+	golang.org/x/term v0.45.0 // indirect
+	golang.org/x/text v0.40.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
-	google.golang.org/genproto v0.0.0-20260615183401-62b3387ff324 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260615183401-62b3387ff324 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260615183401-62b3387ff324 // indirect
-	google.golang.org/grpc v1.81.1 // indirect
+	google.golang.org/genproto v0.0.0-20260720211330-0afa2a65878a // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260720211330-0afa2a65878a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260720211330-0afa2a65878a // indirect
+	google.golang.org/grpc v1.82.1 // indirect
 	google.golang.org/protobuf v1.36.12-0.20260120151049-f2248ac996af // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/apimachinery v0.36.2 // indirect
-	k8s.io/client-go v0.36.2 // indirect
+	k8s.io/apimachinery v0.36.3 // indirect
+	k8s.io/client-go v0.36.3 // indirect
 	k8s.io/klog/v2 v2.140.0 // indirect
-	k8s.io/kube-openapi v0.0.0-20260603220949-865597e52e25 // indirect
-	k8s.io/utils v0.0.0-20260507154919-ff6756f316d2 // indirect
+	k8s.io/kube-openapi v0.0.0-20260721132016-d427ff9ee9ad // indirect
+	k8s.io/utils v0.0.0-20260707023825-cf1189d6abe3 // indirect
 	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
 	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/structured-merge-diff/v6 v6.4.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.4.2 // indirect
 	sigs.k8s.io/yaml v1.6.0 // indirect
 )

go.sum

@@ -2,22 +2,22 @@ cel.dev/expr v0.25.2 h1:K6j46C81hXtZQfuX60cVWQFBJahKSE2gfRbNuvr5bFs=
 cel.dev/expr v0.25.2/go.mod h1:hrXvqGP6G6gyx8UAHSHJ5RGk//1Oj5nXQ2NI02Nrsg4=
 cloud.google.com/go v0.123.0 h1:2NAUJwPR47q+E35uaJeYoNhuNEM9kM8SjgRgdeOJUSE=
 cloud.google.com/go v0.123.0/go.mod h1:xBoMV08QcqUGuPW65Qfm1o9Y4zKZBpGS+7bImXLTAZU=
-cloud.google.com/go/auth v0.20.0 h1:kXTssoVb4azsVDoUiF8KvxAqrsQcQtB53DcSgta74CA=
-cloud.google.com/go/auth v0.20.0/go.mod h1:942/yi/itH1SsmpyrbnTMDgGfdy2BUqIKyd0cyYLc5Q=
+cloud.google.com/go/auth v0.22.0 h1:Xp9wAKkLoeaYb5pYZZoQGz4E9sdPxIbzS3gywZE3ciQ=
+cloud.google.com/go/auth v0.22.0/go.mod h1:M9o2Oz+YI2jAfxewJgb1vyI3vceHF+eohmxyzmrl+9s=
 cloud.google.com/go/auth/oauth2adapt v0.2.8 h1:keo8NaayQZ6wimpNSmW5OPc283g65QNIiLpZnkHRbnc=
 cloud.google.com/go/auth/oauth2adapt v0.2.8/go.mod h1:XQ9y31RkqZCcwJWNSx2Xvric3RrU88hAYYbjDWYDL+c=
 cloud.google.com/go/compute/metadata v0.9.0 h1:pDUj4QMoPejqq20dK0Pg2N4yG9zIkYGdBtwLoEkH9Zs=
 cloud.google.com/go/compute/metadata v0.9.0/go.mod h1:E0bWwX5wTnLPedCKqk3pJmVgCBSM6qQI1yTBdEb3C10=
-cloud.google.com/go/iam v1.11.0 h1:KieQ9Pb+LLPak1O3Rv3GgCxhnmkYf7Xyh0P5HfF1jFM=
-cloud.google.com/go/iam v1.11.0/go.mod h1:KP+nKGugNJW4LcLx1uEZcq1ok5sQHFaQehQNl4QDgV4=
-cloud.google.com/go/logging v1.18.0 h1:KhzZq+1cSkPH9YUaKLLhLtQxIHitVayBmk0sGfoM9+k=
-cloud.google.com/go/logging v1.18.0/go.mod h1:ZGKnpBaURITh+g/uom2VhbiFoFWvejcrHPDhxFtU/gI=
-cloud.google.com/go/longrunning v1.0.0 h1:lwzWEYD8+NkYV7dhexOz6kmlvajZA70+bW/xMhRVVdY=
-cloud.google.com/go/longrunning v1.0.0/go.mod h1:8nqFBPOO1U/XkhWl0I19AMZEphrHi73VNABIpKYaTwM=
-cloud.google.com/go/monitoring v1.29.0 h1:AHhDsFaSax1/4k+qlIDX/SDGe6hggnfXJ9dkgD9qBPY=
-cloud.google.com/go/monitoring v1.29.0/go.mod h1:72NOVjJXHY/HBfoLT0+qlCZBT059+9VXLeAnL2PeeVM=
-cloud.google.com/go/storage v1.62.3 h1:SZq1t23NCI+e96dH77Dg3PEfsNNEjqO8zE5AnD8gVD0=
-cloud.google.com/go/storage v1.62.3/go.mod h1:cpYz/kRVZ+UQAF1uHeea10/9ewcRbxGoGNKsS9daSXA=
+cloud.google.com/go/iam v1.12.0 h1:Aki3bX9aHUDKPHfnRJfDcTdVedvy6quGBQcTqx3DRXk=
+cloud.google.com/go/iam v1.12.0/go.mod h1:FEZ4lXpADAC2AIpQY7LANNjjwyQ2jK439CI2VaD+sLY=
+cloud.google.com/go/logging v1.19.0 h1:NCqhdVUg3wQ8Cobdf16FDSuTGi3+6+hdSBHrY5TsR6Q=
+cloud.google.com/go/logging v1.19.0/go.mod h1:i40NZCHC9Gqvod4yE+yQfDWwlgwW/SrshkkGibCHxcA=
+cloud.google.com/go/longrunning v1.2.0 h1:WjYH3YHBGCxGJP9M4dWGHBfXr/cFIjMkNgWcJj7/iMM=
+cloud.google.com/go/longrunning v1.2.0/go.mod h1:5KMQALFGOCtFoi2xSOA1u3H7WKlhmckgiyFw7+LGQp0=
+cloud.google.com/go/monitoring v1.30.0 h1:r/d+JUbyKmJ8b07iznuKfzVzrIXTWxHQ3lBRm3x2LlY=
+cloud.google.com/go/monitoring v1.30.0/go.mod h1:htlUR0QWVMrjFzZmN4LGnMAve9xB/eduwjmINxVZ8RM=
+cloud.google.com/go/storage v1.64.0 h1:KLpxI/oX9LxeRsNqn877d2WyeT3ryiEwnGt8pwcSPZg=
+cloud.google.com/go/storage v1.64.0/go.mod h1:lWyAtwvDZHdL3k68WVKbESP6bmWaV23ZJJ/JEVw/ZaQ=
 cloud.google.com/go/trace v1.16.0 h1:GmQovzFc5F0CNfl0VLgL64aoTtu7xsM0YajW2GlG9+E=
 cloud.google.com/go/trace v1.16.0/go.mod h1:r+bdAn16dKLSV1G2D5v3e58IlQlizfxWrUfjx7kM7X0=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v1.22.0 h1:aokoqcHvaGjiM3VpjKDfMMnF/8epJ+Q1HLJ7CudztqE=
@@ -42,14 +42,14 @@ github.com/AzureAD/microsoft-authentication-library-for-go v1.7.2 h1:RHK7bS+HQMs
 github.com/AzureAD/microsoft-authentication-library-for-go v1.7.2/go.mod h1:HKpQxkWaGLJ+D/5H8QRpyQXA1eKjxkFlOMwck5+33Jk=
 github.com/Code-Hex/go-generics-cache v1.5.1 h1:6vhZGc5M7Y/YD8cIUcY8kcuQLB4cHR7U+0KMqAA0KcU=
 github.com/Code-Hex/go-generics-cache v1.5.1/go.mod h1:qxcC9kRVrct9rHeiYpFWSoW1vxyillCVzX13KZG8dl4=
-github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.33.0 h1:l7+6kwRMJNwdCvYdDl7Eax+wzEYHSnNY7zrrfbhDdTA=
-github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.33.0/go.mod h1:pJTkW8hEUIIi3Pf65lPZOnn4Y81yCllX6IWk2jNXdkM=
-github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.57.0 h1:jLdiS1vO+XJFyDSWRHBx56r4s/NNtcl5J6KyCcWUX/w=
-github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.57.0/go.mod h1:8lmpHY+1VRoteiOwyrQMDt1YGXOrFKCz+1wJW7n3ODY=
-github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/cloudmock v0.57.0 h1:cSjUzZ7KU8hicTgzaSv9NmSyM9fTVK3y5lsBUl3wOis=
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@@ -134,8 +132,8 @@ github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1x
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@@ -152,8 +150,8 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
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@@ -185,38 +183,38 @@ github.com/fxamacker/cbor/v2 v2.9.2/go.mod h1:vM4b+DJCtHn+zz7h3FFp/hDAI9WNWCsZj2
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@@ -278,16 +276,16 @@ github.com/hashicorp/go-version v1.9.0 h1:CeOIz6k+LoN3qX9Z0tyQrPtiB1DFYRPfCIBtaX
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@@ -298,8 +296,8 @@ github.com/keybase/go-keychain v0.0.1 h1:way+bWYa6lDppZoZcgMbYsvC7GxljxrskdNInRt
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@@ -318,8 +316,8 @@ github.com/linode/linodego v1.69.1 h1:f45N2MHR/oece2/ktTTCYmrlfse4//k3NgwcF5zbGZ
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@@ -350,12 +348,12 @@ github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+
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@@ -372,20 +370,20 @@ github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10/go.mod h1
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@@ -398,8 +396,8 @@ github.com/scaleway/scaleway-sdk-go v1.0.0-beta.36 h1:ObX9hZmK+VmijreZO/8x9pQ8/P
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@@ -424,8 +422,8 @@ github.com/valyala/fastrand v1.1.0 h1:f+5HkLW4rsgzdNoleUOB69hyT9IlD2ZQh9GyDMfb5G
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@@ -440,42 +438,42 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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+go.opentelemetry.io/collector/processor/xprocessor v0.157.0 h1:+WyLGrHwcPk3TK+qt7T8CH+oADEMY4r+U5fIMTBvrAc=
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 go.opentelemetry.io/contrib/detectors/gcp v1.44.0 h1:NmLfL734pJhM0JKaYd2Y28+nY9dPRWYAAbxhRCrKXPw=
 go.opentelemetry.io/contrib/detectors/gcp v1.44.0/go.mod h1:tNAsgd8avTGke1+MndXlU5Cru4PQ9Ai/cCNWQv/ZJ/s=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.69.0 h1:2yEATaop1/a1I4psnSLgWVPLWwCzkqWakgJy7xTDVy0=
@@ -486,8 +484,8 @@ go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.69.0 h1:8tvICD4
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.69.0/go.mod h1:z9+yiacE0IHRqM4qFfkbt/JYlmYXgss8GY/jXoNuPJI=
 go.opentelemetry.io/otel v1.44.0 h1:JjwHmHpA4iZ3wBxluu2fbbE7j4kqlE8jXyAyPXH7HqU=
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@@ -519,65 +517,63 @@ go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
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lib/httputil/transport_lb.go

@@ -0,0 +1,334 @@
+package httputil
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
+)
+
+const (
+	brokenBackendTimeout     = 5 * time.Second
+	backendDiscoveryInterval = 10 * time.Second
+	backendDiscoveryTimeout  = 10 * time.Second
+)
+
+// NewLoadBalancerTransport returns new RoundTripper that performs least-loaded HTTP requests loadbalancing
+// based on discovered backends for the given url host
+// and update url with load-balancing prefix
+//
+// It returns origin transport and url if load-balancing is not needed for given url
+func NewLoadBalancerTransport(origin http.RoundTripper, originURL *url.URL) (http.RoundTripper, *url.URL) {
+
+	modifiedURL := *originURL
+	var discoverFunc func(context.Context, string, string) ([]*backend, error)
+	switch {
+	case strings.HasPrefix(originURL.Host, "dns+"):
+		modifiedURL.Host = modifiedURL.Host[4:]
+		discoverFunc = discoverDNSBackends
+	case strings.HasPrefix(originURL.Host, "srv+"):
+		modifiedURL.Host = modifiedURL.Host[4:]
+		discoverFunc = discoverSRVBackends
+	default:
+		return origin, originURL
+	}
+	host, port, err := net.SplitHostPort(modifiedURL.Host)
+	if err != nil {
+		host = modifiedURL.Host
+		port = "80"
+		if modifiedURL.Scheme == "https" {
+			port = "443"
+		}
+	}
+	t := &loadbalancerTransport{
+		tr:           origin,
+		host:         host,
+		port:         port,
+		discoverFunc: discoverFunc,
+	}
+	t.discoverBackends()
+	return t, &modifiedURL
+}
+
+type loadbalancerTransport struct {
+	tr   http.RoundTripper
+	host string
+	port string
+
+	discoverFunc func(context.Context, string, string) ([]*backend, error)
+
+	nextDiscoveryDeadline atomic.Uint64
+	discovering           atomic.Bool
+	dbs                   atomic.Pointer[discoveredBackends]
+}
+
+type discoveredBackends struct {
+	backends []*backend
+	// n is an atomic counter, which is used for balancing load among available backends.
+	n atomic.Uint32
+}
+
+// getLeastLoadedBackend returns least loaded backend
+// caller must release backend with backend.put() method
+func (dbs *discoveredBackends) getLeastLoadedBackend() *backend {
+	firstB := dbs.backends[0]
+	if len(dbs.backends) == 1 {
+		firstB.get()
+		return firstB
+	}
+
+	// Slow path - select other backends.
+	n := dbs.n.Add(1) - 1
+	for i := range uint32(len(dbs.backends)) {
+		idx := (n + i) % uint32(len(dbs.backends))
+		bu := dbs.backends[idx]
+		if bu.isBroken() {
+			continue
+		}
+
+		// The Load() in front of CompareAndSwap() avoids CAS overhead for items with values bigger than 0.
+		if bu.concurrentRequests.Load() == 0 && bu.concurrentRequests.CompareAndSwap(0, 1) {
+			dbs.n.CompareAndSwap(n+1, idx+1)
+			// There is no need in the call b.get(), because we already incremented b.concurrentRequests above.
+			return bu
+		}
+	}
+
+	// Slow path - return the backend with the minimum number of concurrently executed requests.
+	bMinIdx := n % uint32(len(dbs.backends))
+	minRequests := dbs.backends[bMinIdx].concurrentRequests.Load()
+	for i := uint32(1); i < uint32(len(dbs.backends)); i++ {
+		idx := (n + i) % uint32(len(dbs.backends))
+		bu := dbs.backends[idx]
+		if bu.isBroken() {
+			continue
+		}
+
+		reqs := bu.concurrentRequests.Load()
+		if reqs < minRequests || dbs.backends[bMinIdx].isBroken() {
+			bMinIdx = idx
+			minRequests = reqs
+		}
+	}
+	bMin := dbs.backends[bMinIdx]
+	if bMin.isBroken() {
+		// If all backends are broken, then returns the first backend.
+		firstB.get()
+		return firstB
+	}
+	bMin.get()
+	dbs.n.CompareAndSwap(n+1, bMinIdx+1)
+	return bMin
+}
+
+type backend struct {
+	addr               string
+	concurrentRequests atomic.Int32
+	brokenDeadline     atomic.Uint64
+}
+
+func (b *backend) get() {
+	b.concurrentRequests.Add(1)
+}
+
+func (b *backend) put() {
+	b.concurrentRequests.Add(-1)
+}
+
+func (b *backend) isBroken() bool {
+	bd := b.brokenDeadline.Load()
+	if bd == 0 {
+		return false
+	}
+	ct := fasttime.UnixTimestamp()
+	return ct < bd
+}
+
+// RoundTrip implements http.RoundTripper interface
+func (lb *loadbalancerTransport) RoundTrip(r *http.Request) (*http.Response, error) {
+	dbs := lb.getBackends()
+	if dbs == nil || len(dbs.backends) == 0 {
+		return nil, fmt.Errorf("no backends found for hostname=%q", lb.host)
+	}
+
+	maxRetries := len(dbs.backends)
+	var lastErr error
+	for range maxRetries {
+		b := dbs.getLeastLoadedBackend()
+		resp, err := lb.doRequest(r, b)
+		if err != nil {
+			ct := fasttime.UnixTimestamp()
+			brokenDeadline := ct + uint64(brokenBackendTimeout.Seconds())
+			b.brokenDeadline.Store(brokenDeadline)
+			if !netutil.IsTrivialNetworkError(err) {
+				return nil, err
+			}
+			// perform the same check for retry as http.Request.isReplayable does
+			canRetry := r.Body == nil || r.Body == http.NoBody || r.GetBody != nil
+			if !canRetry {
+				return nil, err
+			}
+			lastErr = err
+			continue
+		}
+		return resp, nil
+	}
+	return nil, fmt.Errorf("all backends are unavailable: %w", lastErr)
+}
+
+func (lb *loadbalancerTransport) doRequest(r *http.Request, b *backend) (*http.Response, error) {
+	r2 := r.Clone(r.Context())
+	if r.GetBody != nil {
+		body, err := r.GetBody()
+		if err != nil {
+			b.put()
+			return nil, err
+		}
+		r2.Body = body
+	}
+	r2.URL.Host = b.addr
+	if r2.Host == "" {
+		r2.Host = r.URL.Host
+	}
+	resp, err := lb.tr.RoundTrip(r2)
+	if err != nil {
+		b.put()
+		return nil, err
+	}
+	// wrap response body with readCloser that releases backend after Close call
+	// it's needed to properly account loaded backends at getLeastLoadedBackends
+	resp.Body = newReleaseReadCloser(resp.Body, b)
+	return resp, nil
+}
+
+func (lb *loadbalancerTransport) getBackends() *discoveredBackends {
+	ct := fasttime.UnixTimestamp()
+	deadline := lb.nextDiscoveryDeadline.Load()
+	if ct < deadline || !lb.discovering.CompareAndSwap(false, true) {
+		return lb.dbs.Load()
+	}
+	lb.discoverBackends()
+	return lb.dbs.Load()
+}
+
+func (lb *loadbalancerTransport) discoverBackends() {
+	ctx, cancel := context.WithTimeout(context.Background(), backendDiscoveryTimeout)
+	defer func() {
+		cancel()
+		ct := fasttime.UnixTimestamp()
+		nextDeadline := ct + uint64(backendDiscoveryInterval.Seconds())
+		lb.nextDiscoveryDeadline.Store(nextDeadline)
+		lb.discovering.Store(false)
+	}()
+	backends, err := lb.discoverFunc(ctx, lb.host, lb.port)
+	if err != nil {
+		logger.Errorf("cannot discover backends: %s, retry in %s", err, backendDiscoveryInterval)
+		return
+	}
+	dbs := &discoveredBackends{
+		backends: backends,
+	}
+	sort.Slice(dbs.backends, func(i, j int) bool {
+		return dbs.backends[i].addr < dbs.backends[j].addr
+	})
+
+	prevBackends := lb.dbs.Load()
+	if areBackendsEqual(prevBackends, dbs) {
+		return
+	}
+
+	lb.dbs.Store(dbs)
+}
+
+func discoverDNSBackends(ctx context.Context, host, port string) ([]*backend, error) {
+	addrs, err := netutil.Resolver.LookupIPAddr(ctx, host)
+	if err != nil {
+		return nil, fmt.Errorf("failed to lookupIPAddr for host: %q: %w", host, err)
+	}
+	backends := make([]*backend, 0, len(addrs))
+	for _, addr := range addrs {
+		if !netutil.TCP6Enabled() {
+			ip, ok := netip.AddrFromSlice(addr.IP)
+			if !ok {
+				logger.Panicf("BUG: cannot build netip Addr from slice addr: %q", addr.IP.String())
+			}
+			if !ip.Unmap().Is4() {
+				continue
+			}
+		}
+		ip := addr.IP.String()
+		if len(port) > 0 {
+			ip = net.JoinHostPort(ip, port)
+		}
+		backends = append(backends, &backend{addr: ip})
+	}
+	return backends, nil
+}
+
+func discoverSRVBackends(ctx context.Context, host, port string) ([]*backend, error) {
+	_, addrs, err := netutil.Resolver.LookupSRV(ctx, "", "", host)
+	if err != nil {
+		return nil, fmt.Errorf("failed to LookupSRV records for host: %q: %w", host, err)
+	}
+	backends := make([]*backend, 0, len(addrs))
+	for _, addr := range addrs {
+		hostPort := port
+		if addr.Port > 0 {
+			hostPort = strconv.FormatUint(uint64(addr.Port), 10)
+		}
+		hostAddr := net.JoinHostPort(addr.Target, hostPort)
+		backends = append(backends, &backend{addr: hostAddr})
+	}
+	return backends, nil
+}
+
+func newReleaseReadCloser(responseBody io.ReadCloser, b *backend) io.ReadCloser {
+	return &releaseReadCloser{
+		ReadCloser: responseBody,
+		b:          b,
+	}
+}
+
+type releaseReadCloser struct {
+	io.ReadCloser
+	b        *backend
+	released atomic.Bool
+}
+
+func (rrc *releaseReadCloser) Close() error {
+	if rrc.released.CompareAndSwap(false, true) {
+		// Close method could be called multiple times
+		// and it must produce idempotent result
+		rrc.b.put()
+	}
+	return rrc.ReadCloser.Close()
+}
+
+func areBackendsEqual(left, right *discoveredBackends) bool {
+	if left == nil || right == nil {
+		return left == right
+	}
+	if len(left.backends) != len(right.backends) {
+		return false
+	}
+	for idx, leftB := range left.backends {
+		rightB := right.backends[idx]
+		if leftB.addr != rightB.addr {
+			return false
+		}
+	}
+
+	return true
+}

lib/httputil/transport_lb_test.go

@@ -0,0 +1,127 @@
+package httputil
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"sync"
+	"testing"
+
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
+)
+
+type testRemoteServer struct {
+	mu              sync.Mutex
+	requestsPerHost map[string]int
+
+	totalRequests int
+	firstError    error
+}
+
+func (trs *testRemoteServer) RoundTrip(r *http.Request) (*http.Response, error) {
+	trs.mu.Lock()
+	if trs.firstError != nil && trs.totalRequests == 0 {
+		err := trs.firstError
+		trs.firstError = nil
+		trs.totalRequests++
+		trs.mu.Unlock()
+		return nil, err
+	}
+	trs.totalRequests++
+
+	if trs.requestsPerHost == nil {
+		trs.requestsPerHost = make(map[string]int)
+	}
+	trs.requestsPerHost[r.URL.Host]++
+	trs.mu.Unlock()
+
+	return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+}
+
+type testDNSResolver struct {
+	ips []net.IPAddr
+}
+
+func (tdr *testDNSResolver) LookupSRV(_ context.Context, _, _, name string) (cname string, addrs []*net.SRV, err error) {
+	return "", nil, fmt.Errorf("unexpected LookupMX call for name=%q", name)
+}
+func (tdr *testDNSResolver) LookupIPAddr(ctx context.Context, host string) ([]net.IPAddr, error) {
+	return tdr.ips, nil
+}
+
+func (tdr *testDNSResolver) LookupMX(_ context.Context, name string) ([]*net.MX, error) {
+	return nil, fmt.Errorf("unexpected LookupMX call for name=%q", name)
+}
+
+func TestLoadbalancerTransport(t *testing.T) {
+	f := func(discoveredIPs []string, trs *testRemoteServer) {
+		t.Helper()
+
+		parsedIPs := make([]net.IPAddr, 0, len(discoveredIPs))
+		for _, dIP := range discoveredIPs {
+			pIP, err := netip.ParseAddr(dIP)
+			if err != nil {
+				t.Fatalf("cannot parse IP=%q: %s", dIP, err)
+			}
+			parsedIPs = append(parsedIPs, net.IPAddr{IP: pIP.AsSlice()})
+		}
+		tdr := &testDNSResolver{ips: parsedIPs}
+		originResolver := netutil.Resolver
+		defer func() { netutil.Resolver = originResolver }()
+
+		netutil.Resolver = tdr
+		requestURL, err := url.Parse("http://dns+vmsingle.example.com:8429/api/v1/write")
+		if err != nil {
+			t.Fatalf("cannot parse url: %s", err)
+		}
+		lbt, requestURL := NewLoadBalancerTransport(trs, requestURL)
+		if len(discoveredIPs) == 0 {
+			r, err := http.NewRequest(http.MethodGet, requestURL.String(), nil)
+			if err != nil {
+				t.Fatalf("cannot create http request: %s", err)
+			}
+			_, err = lbt.RoundTrip(r)
+			if err == nil {
+				t.Fatalf("expected no backends found error")
+			}
+			return
+		}
+		expectedRequestsPerHost := 2
+		for range len(discoveredIPs) * expectedRequestsPerHost {
+			r, err := http.NewRequest(http.MethodGet, requestURL.String(), nil)
+			if err != nil {
+				t.Fatalf("cannot create http request: %s", err)
+			}
+			resp, err := lbt.RoundTrip(r)
+			if err != nil {
+				t.Fatalf("unexpected error: %s", err)
+			}
+			resp.Body.Close()
+		}
+		requestsPerHost := trs.requestsPerHost
+
+		for _, dIP := range discoveredIPs {
+			expectedHostPort := net.JoinHostPort(dIP, "8429")
+			gotRequestsPerHost, ok := requestsPerHost[expectedHostPort]
+			if !ok {
+				t.Fatalf("not found expected backend request for: %q", expectedHostPort)
+			}
+			if gotRequestsPerHost != expectedRequestsPerHost {
+				t.Fatalf("unexpected requests per host:%q %d:%d (-;+)", expectedHostPort, expectedRequestsPerHost, gotRequestsPerHost)
+			}
+		}
+	}
+	trs := testRemoteServer{}
+	f([]string{"1.1.1.1"}, &trs)
+
+	trs = testRemoteServer{}
+	f([]string{"1.1.1.1", "2.2.2.2", "5.5.5.5"}, &trs)
+
+	// empty backends, expecting error
+	trs = testRemoteServer{}
+	f([]string{}, &trs)
+
+}

lib/persistentqueue/fastqueue.go

@@ -95,14 +95,14 @@ func mustOpenFastQueue(path, name string, opts OpenFastQueueOpts) *FastQueue {
 	}
 	fq.cond.L = &fq.mu
 	fq.lastInmemoryBlockReadTime = fasttime.UnixTimestamp()
-	_ = metrics.GetOrCreateGauge(fmt.Sprintf(`vm_persistentqueue_bytes_pending{path=%q}`, path), func() float64 {
+	_ = metrics.GetOrCreateGauge(fmt.Sprintf(`vm_persistentqueue_bytes_pending{path=%q, name=%q}`, path, name), func() float64 {
 		fq.mu.Lock()
 		n := fq.pq.GetPendingBytes()
 		fq.mu.Unlock()
 		return float64(n)
 	})
 
-	_ = metrics.GetOrCreateGauge(fmt.Sprintf(`vm_persistentqueue_free_disk_space_bytes{path=%q}`, path), func() float64 {
+	_ = metrics.GetOrCreateGauge(fmt.Sprintf(`vm_persistentqueue_free_disk_space_bytes{path=%q, name=%q}`, path, name), func() float64 {
 		freeSpaceBytes := fs.MustGetFreeSpace(path)
 		// Limited by disk space if remoteWrite.maxDiskUsagePerURL wasn't set
 		if maxPendingBytes == 0 {

lib/persistentqueue/persistentqueue.go

@@ -156,12 +156,12 @@ func tryOpeningQueue(path, name string, chunkFileSize, maxBlockSize, maxPendingB
 	q.dir = path
 	q.name = name
 
-	q.blocksDropped = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_dropped_total{path=%q}`, path))
-	q.bytesDropped = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_dropped_total{path=%q}`, path))
-	q.blocksWritten = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_written_total{path=%q}`, path))
-	q.bytesWritten = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_written_total{path=%q}`, path))
-	q.blocksRead = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_read_total{path=%q}`, path))
-	q.bytesRead = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_read_total{path=%q}`, path))
+	q.blocksDropped = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_dropped_total{path=%q, name=%q}`, path, name))
+	q.bytesDropped = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_dropped_total{path=%q, name=%q}`, path, name))
+	q.blocksWritten = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_written_total{path=%q, name=%q}`, path, name))
+	q.bytesWritten = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_written_total{path=%q, name=%q}`, path, name))
+	q.blocksRead = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_blocks_read_total{path=%q, name=%q}`, path, name))
+	q.bytesRead = metrics.GetOrCreateCounter(fmt.Sprintf(`vm_persistentqueue_bytes_read_total{path=%q, name=%q}`, path, name))
 
 	cleanOnError := func() {
 		if q.reader != nil {

lib/storage/index_db_test.go

@@ -485,78 +485,65 @@ func TestIndexDBOpenClose(t *testing.T) {
 }
 
 func TestIndexDB(t *testing.T) {
-	const metricGroups = 10
-	timestamp := time.Now().UnixMilli()
+	defer testRemoveAll(t)
 
-	t.Run("serial", func(t *testing.T) {
-		const path = "TestIndexDB-serial"
-		s := MustOpenStorage(path, OpenOptions{})
-		ptw := s.tb.MustGetPartition(timestamp)
-		db := ptw.pt.idb
-		mns, tsids, err := testIndexDBGetOrCreateTSIDByName(db, metricGroups, timestamp)
-		if err != nil {
-			t.Fatalf("unexpected error: %s", err)
-		}
-		if err := testIndexDBCheckTSIDByName(db, mns, tsids, timestamp, false); err != nil {
-			t.Fatalf("unexpected error: %s", err)
-		}
-
-		// Re-open the storage and verify it works as expected.
-		s.tb.PutPartition(ptw)
-		s.MustClose()
-		s = MustOpenStorage(path, OpenOptions{})
-
-		ptw = s.tb.MustGetPartition(timestamp)
-		db = ptw.pt.idb
-		if err := testIndexDBCheckTSIDByName(db, mns, tsids, timestamp, false); err != nil {
-			t.Fatalf("unexpected error: %s", err)
-		}
-
-		s.tb.PutPartition(ptw)
-		s.MustClose()
-		fs.MustRemoveDir(path)
-	})
-
-	t.Run("concurrent", func(t *testing.T) {
-		const path = "TestIndexDB-concurrent"
-		s := MustOpenStorage(path, OpenOptions{})
+	f := func(t *testing.T, concurrency int, disablePerDayIndex bool) {
+		const metricGroups = 10
+		now := time.Now().UTC()
+		timestamp := now.UnixMilli()
+		date := uint64(timestamp / msecPerDay)
+		searchTR := TimeRange{
+			MinTimestamp: time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC).UnixMilli(),
+			MaxTimestamp: time.Date(now.Year(), now.Month(), now.Day(), 23, 59, 59, 999_999_999, time.UTC).UnixMilli(),
+		}
+		if disablePerDayIndex {
+			searchTR = globalIndexTimeRange
+		}
+
+		s := MustOpenStorage(t.Name(), OpenOptions{
+			DisablePerDayIndex: disablePerDayIndex,
+		})
+		defer s.MustClose()
 		ptw := s.tb.MustGetPartition(timestamp)
+		defer s.tb.PutPartition(ptw)
 		db := ptw.pt.idb
 
-		ch := make(chan error, 3)
-		for range cap(ch) {
-			go func() {
-				mns, tsid, err := testIndexDBGetOrCreateTSIDByName(db, metricGroups, timestamp)
+		var wg sync.WaitGroup
+		errs := make([]error, concurrency)
+		isConcurrent := concurrency > 1
+		for i := range concurrency {
+			wg.Go(func() {
+				mns, tsids, err := testIndexDBGetOrCreateTSIDByName(db, metricGroups, date)
 				if err != nil {
-					ch <- err
+					errs[i] = fmt.Errorf("testIndexDBGetOrCreateTSIDByName failed unexpectedly: %w", err)
 					return
 				}
-				if err := testIndexDBCheckTSIDByName(db, mns, tsid, timestamp, true); err != nil {
-					ch <- err
-					return
+				if err := testIndexDBCheckTSIDByName(db, mns, tsids, date, searchTR, isConcurrent); err != nil {
+					errs[i] = fmt.Errorf("testIndexDBCheckTSIDByName failed unexpectedly: %w", err)
 				}
-				ch <- nil
-			}()
+			})
 		}
-		deadlineCh := time.After(30 * time.Second)
-		for range cap(ch) {
-			select {
-			case err := <-ch:
-				if err != nil {
-					t.Fatalf("unexpected error: %s", err)
-				}
-			case <-deadlineCh:
-				t.Fatalf("timeout")
+		wg.Wait()
+		for i, err := range errs {
+			if err != nil {
+				t.Errorf("[worker %d] %s", i, err)
 			}
 		}
+	}
 
-		s.tb.PutPartition(ptw)
-		s.MustClose()
-		fs.MustRemoveDir(path)
-	})
+	for _, concurrency := range []int{1, 4} {
+		for _, disablePerDayIndex := range []bool{false, true} {
+			name := fmt.Sprintf("concurrency=%d/disablePerDayIndex=%t", concurrency, disablePerDayIndex)
+			t.Run(name, func(t *testing.T) {
+				f(t, concurrency, disablePerDayIndex)
+				// Repeat the same test on non-empty reopened storage.
+				f(t, concurrency, disablePerDayIndex)
+			})
+		}
+	}
 }
 
-func testIndexDBGetOrCreateTSIDByName(db *indexDB, metricGroups int, timestamp int64) ([]MetricName, []TSID, error) {
+func testIndexDBGetOrCreateTSIDByName(db *indexDB, metricGroups int, date uint64) ([]MetricName, []TSID, error) {
 	r := rand.New(rand.NewSource(1))
 	// Create tsids.
 	var mns []MetricName
@@ -564,8 +551,6 @@ func testIndexDBGetOrCreateTSIDByName(db *indexDB, metricGroups int, timestamp i
 
 	is := db.getIndexSearch(noDeadline)
 
-	date := uint64(timestamp) / msecPerDay
-
 	var metricNameBuf []byte
 	for i := range 401 {
 		var mn MetricName
@@ -602,7 +587,7 @@ func testIndexDBGetOrCreateTSIDByName(db *indexDB, metricGroups int, timestamp i
 	return mns, tsids, nil
 }
 
-func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, timestamp int64, isConcurrent bool) error {
+func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, date uint64, tr TimeRange, isConcurrent bool) error {
 	timeseriesCounters := make(map[uint64]bool)
 	var tsidLocal TSID
 	var metricNameCopy []byte
@@ -618,7 +603,7 @@ func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, tim
 		metricName := mn.Marshal(nil)
 
 		is := db.getIndexSearch(noDeadline)
-		if !is.getTSIDByMetricName(&tsidLocal, metricName, uint64(timestamp)/msecPerDay) {
+		if !is.getTSIDByMetricName(&tsidLocal, metricName, date) {
 			return fmt.Errorf("cannot obtain tsid #%d for mn %s", i, mn)
 		}
 		db.putIndexSearch(is)
@@ -652,7 +637,7 @@ func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, tim
 		}
 
 		// Test SearchLabelValues
-		lvs, err := db.SearchLabelValues(nil, "__name__", nil, TimeRange{}, 1e5, 1e9, noDeadline)
+		lvs, err := db.SearchLabelValues(nil, "__name__", nil, tr, 1e5, 1e9, noDeadline)
 		if err != nil {
 			return fmt.Errorf("error in SearchLabelValues(labelName=%q): %w", "__name__", err)
 		}
@@ -661,7 +646,7 @@ func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, tim
 		}
 		for i := range mn.Tags {
 			tag := &mn.Tags[i]
-			lvs, err := db.SearchLabelValues(nil, string(tag.Key), nil, TimeRange{}, 1e5, 1e9, noDeadline)
+			lvs, err := db.SearchLabelValues(nil, string(tag.Key), nil, tr, 1e5, 1e9, noDeadline)
 			if err != nil {
 				return fmt.Errorf("error in SearchLabelValues(labelName=%q): %w", tag.Key, err)
 			}
@@ -672,10 +657,10 @@ func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, tim
 		}
 	}
 
-	// Test SearchLabelNames (empty filters, global time range)
-	lns, err := db.SearchLabelNames(nil, nil, TimeRange{}, 1e5, 1e9, noDeadline)
+	// Test SearchLabelNames (empty filter)
+	lns, err := db.SearchLabelNames(nil, nil, tr, 1e5, 1e9, noDeadline)
 	if err != nil {
-		return fmt.Errorf("error in SearchLabelNames(empty filter, global time range): %w", err)
+		return fmt.Errorf("error in SearchLabelNames(empty filter): %w", err)
 	}
 	if _, ok := lns["__name__"]; !ok {
 		return fmt.Errorf("cannot find __name__ in %q", lns)
@@ -700,10 +685,6 @@ func testIndexDBCheckTSIDByName(db *indexDB, mns []MetricName, tsids []TSID, tim
 	}
 
 	// Try tag filters.
-	tr := TimeRange{
-		MinTimestamp: timestamp - msecPerDay,
-		MaxTimestamp: timestamp + msecPerDay,
-	}
 	for i := range mns {
 		mn := &mns[i]
 		tsid := &tsids[i]

vendor/cloud.google.com/go/auth/CHANGES.md

@@ -1,5 +1,25 @@
 # Changes
 
+## [0.22.0](https://github.com/googleapis/google-cloud-go/compare/auth/v0.21.0...auth/v0.22.0) (2026-07-13)
+
+
+### Features
+
+* **auth:** Populate http.response.status_code in http transport ([#20053](https://github.com/googleapis/google-cloud-go/issues/20053)) ([bff5d7c](https://github.com/googleapis/google-cloud-go/commit/bff5d7c9bc7f8ea8c0059f7d8e2d4294ba92c5bc))
+
+## [0.21.0](https://github.com/googleapis/google-cloud-go/compare/auth/v0.20.0...auth/v0.21.0) (2026-07-07)
+
+
+### Features
+
+* **auth:** Implement updated design for regional access boundary ([#13417](https://github.com/googleapis/google-cloud-go/issues/13417)) ([fadb6c7](https://github.com/googleapis/google-cloud-go/commit/fadb6c764dbe869fca736d9f0446b5010f21d2f2))
+
+
+### Bug Fixes
+
+* **auth:** Avoid double impersonation in idtoken and clarify docs ([#14474](https://github.com/googleapis/google-cloud-go/issues/14474)) ([995bfc3](https://github.com/googleapis/google-cloud-go/commit/995bfc36199ba6ae1c88803c71f39a0b19fc8c0f)), closes [#11105](https://github.com/googleapis/google-cloud-go/issues/11105)
+* **auth:** Correct go min version ([#20094](https://github.com/googleapis/google-cloud-go/issues/20094)) ([6bb4358](https://github.com/googleapis/google-cloud-go/commit/6bb4358dca69b803e52eb2af882fa5afc24d54e2))
+
 ## [0.20.0](https://github.com/googleapis/google-cloud-go/releases/tag/auth%2Fv0.20.0) (2026-04-06)
 
 ## [0.19.0](https://github.com/googleapis/google-cloud-go/releases/tag/auth%2Fv0.19.0) (2026-03-23)

vendor/cloud.google.com/go/auth/credentials/detect.go

@@ -27,7 +27,7 @@ import (
 	"cloud.google.com/go/auth"
 	"cloud.google.com/go/auth/internal"
 	"cloud.google.com/go/auth/internal/credsfile"
-	"cloud.google.com/go/auth/internal/trustboundary"
+	"cloud.google.com/go/auth/internal/regionalaccessboundary"
 	"cloud.google.com/go/compute/metadata"
 	"github.com/googleapis/gax-go/v2/internallog"
 )
@@ -138,11 +138,15 @@ func OnGCE() bool {
 // Google APIs can compromise the security of your systems and data. For
 // more information, refer to [Validate credential configurations from
 // external sources](https://cloud.google.com/docs/authentication/external/externally-sourced-credentials).
+//
+// Note: If the detected credential configuration file contains a
+// `service_account_impersonation_url` field, the returned credentials will
+// yield tokens that are already impersonated to that target service account.
 func DetectDefault(opts *DetectOptions) (*auth.Credentials, error) {
 	if err := opts.validate(); err != nil {
 		return nil, err
 	}
-	trustBoundaryEnabled, err := trustboundary.IsEnabled()
+	regionalAccessBoundaryEnabled, err := regionalaccessboundary.IsEnabled()
 	if err != nil {
 		return nil, err
 	}
@@ -175,12 +179,12 @@ func DetectDefault(opts *DetectOptions) (*auth.Credentials, error) {
 		}
 
 		tp := computeTokenProvider(opts, metadataClient)
-		if trustBoundaryEnabled {
-			gceConfigProvider := trustboundary.NewGCEConfigProvider(gceUniverseDomainProvider)
+		if regionalAccessBoundaryEnabled {
+			gceConfigProvider := regionalaccessboundary.NewGCEConfigProvider(gceUniverseDomainProvider)
 			var err error
-			tp, err = trustboundary.NewProvider(opts.client(), gceConfigProvider, opts.logger(), tp)
+			tp, err = regionalaccessboundary.NewProvider(opts.client(), gceConfigProvider, opts.logger(), tp)
 			if err != nil {
-				return nil, fmt.Errorf("credentials: failed to initialize GCE trust boundary provider: %w", err)
+				return nil, fmt.Errorf("credentials: failed to initialize GCE Regional Access Boundary provider: %w", err)
 			}
 
 		}

vendor/cloud.google.com/go/auth/credentials/filetypes.go

@@ -25,7 +25,7 @@ import (
 	"cloud.google.com/go/auth/credentials/internal/impersonate"
 	internalauth "cloud.google.com/go/auth/internal"
 	"cloud.google.com/go/auth/internal/credsfile"
-	"cloud.google.com/go/auth/internal/trustboundary"
+	"cloud.google.com/go/auth/internal/regionalaccessboundary"
 )
 
 const cloudPlatformScope = "https://www.googleapis.com/auth/cloud-platform"
@@ -159,15 +159,15 @@ func handleServiceAccount(f *credsfile.ServiceAccountFile, opts *DetectOptions)
 		return nil, err
 	}
 
-	trustBoundaryEnabled, err := trustboundary.IsEnabled()
+	regionalAccessBoundaryEnabled, err := regionalaccessboundary.IsEnabled()
 	if err != nil {
 		return nil, err
 	}
-	if !trustBoundaryEnabled {
+	if !regionalAccessBoundaryEnabled {
 		return tp, nil
 	}
-	saConfig := trustboundary.NewServiceAccountConfigProvider(opts2LO.Email, opts2LO.UniverseDomain)
-	return trustboundary.NewProvider(opts.client(), saConfig, opts.logger(), tp)
+	saConfig := regionalaccessboundary.NewServiceAccountConfigProvider(opts2LO.Email, opts2LO.UniverseDomain)
+	return regionalaccessboundary.NewProvider(opts.client(), saConfig, opts.logger(), tp)
 }
 
 func handleUserCredential(f *credsfile.UserCredentialsFile, opts *DetectOptions) (auth.TokenProvider, error) {
@@ -210,35 +210,35 @@ func handleExternalAccount(f *credsfile.ExternalAccountFile, opts *DetectOptions
 	if err != nil {
 		return nil, err
 	}
-	trustBoundaryEnabled, err := trustboundary.IsEnabled()
+	regionalAccessBoundaryEnabled, err := regionalaccessboundary.IsEnabled()
 	if err != nil {
 		return nil, err
 	}
-	if !trustBoundaryEnabled {
+	if !regionalAccessBoundaryEnabled {
 		return tp, nil
 	}
 
 	ud := resolveUniverseDomain(opts.UniverseDomain, f.UniverseDomain)
-	var configProvider trustboundary.ConfigProvider
+	var configProvider regionalaccessboundary.ConfigProvider
 
 	if f.ServiceAccountImpersonationURL == "" {
 		// No impersonation, this is a direct external account credential.
-		// The trust boundary is based on the workload/workforce pool.
+		// The Regional Access Boundary is based on the workload/workforce pool.
 		var err error
-		configProvider, err = trustboundary.NewExternalAccountConfigProvider(f.Audience, ud)
+		configProvider, err = regionalaccessboundary.NewExternalAccountConfigProvider(f.Audience, ud)
 		if err != nil {
 			return nil, err
 		}
 	} else {
-		// Impersonation is used. The trust boundary is based on the target service account.
+		// Impersonation is used. The Regional Access Boundary is based on the target service account.
 		targetSAEmail, err := impersonate.ExtractServiceAccountEmail(f.ServiceAccountImpersonationURL)
 		if err != nil {
-			return nil, fmt.Errorf("credentials: could not extract target service account email for trust boundary: %w", err)
+			return nil, fmt.Errorf("credentials: could not extract target service account email for Regional Access Boundary: %w", err)
 		}
-		configProvider = trustboundary.NewServiceAccountConfigProvider(targetSAEmail, ud)
+		configProvider = regionalaccessboundary.NewServiceAccountConfigProvider(targetSAEmail, ud)
 	}
 
-	return trustboundary.NewProvider(opts.client(), configProvider, opts.logger(), tp)
+	return regionalaccessboundary.NewProvider(opts.client(), configProvider, opts.logger(), tp)
 }
 
 func handleExternalAccountAuthorizedUser(f *credsfile.ExternalAccountAuthorizedUserFile, opts *DetectOptions) (auth.TokenProvider, error) {
@@ -257,20 +257,20 @@ func handleExternalAccountAuthorizedUser(f *credsfile.ExternalAccountAuthorizedU
 	if err != nil {
 		return nil, err
 	}
-	trustBoundaryEnabled, err := trustboundary.IsEnabled()
+	regionalAccessBoundaryEnabled, err := regionalaccessboundary.IsEnabled()
 	if err != nil {
 		return nil, err
 	}
-	if !trustBoundaryEnabled {
+	if !regionalAccessBoundaryEnabled {
 		return tp, nil
 	}
 
 	ud := resolveUniverseDomain(opts.UniverseDomain, f.UniverseDomain)
-	configProvider, err := trustboundary.NewExternalAccountConfigProvider(f.Audience, ud)
+	configProvider, err := regionalaccessboundary.NewExternalAccountConfigProvider(f.Audience, ud)
 	if err != nil {
 		return nil, err
 	}
-	return trustboundary.NewProvider(opts.client(), configProvider, opts.logger(), tp)
+	return regionalaccessboundary.NewProvider(opts.client(), configProvider, opts.logger(), tp)
 }
 
 func handleImpersonatedServiceAccount(f *credsfile.ImpersonatedServiceAccountFile, opts *DetectOptions) (auth.TokenProvider, error) {
@@ -306,19 +306,19 @@ func handleImpersonatedServiceAccount(f *credsfile.ImpersonatedServiceAccountFil
 	if err != nil {
 		return nil, err
 	}
-	trustBoundaryEnabled, err := trustboundary.IsEnabled()
+	regionalAccessBoundaryEnabled, err := regionalaccessboundary.IsEnabled()
 	if err != nil {
 		return nil, err
 	}
-	if !trustBoundaryEnabled {
+	if !regionalAccessBoundaryEnabled {
 		return tp, nil
 	}
 	targetSAEmail, err := impersonate.ExtractServiceAccountEmail(f.ServiceAccountImpersonationURL)
 	if err != nil {
-		return nil, fmt.Errorf("credentials: could not extract target service account email for trust boundary: %w", err)
+		return nil, fmt.Errorf("credentials: could not extract target service account email for Regional Access Boundary: %w", err)
 	}
-	targetSAConfig := trustboundary.NewServiceAccountConfigProvider(targetSAEmail, ud)
-	return trustboundary.NewProvider(opts.client(), targetSAConfig, opts.logger(), tp)
+	targetSAConfig := regionalaccessboundary.NewServiceAccountConfigProvider(targetSAEmail, ud)
+	return regionalaccessboundary.NewProvider(opts.client(), targetSAConfig, opts.logger(), tp)
 }
 func handleGDCHServiceAccount(f *credsfile.GDCHServiceAccountFile, opts *DetectOptions) (auth.TokenProvider, error) {
 	return gdch.NewTokenProvider(f, &gdch.Options{

vendor/cloud.google.com/go/auth/grpctransport/directpath.go

@@ -120,7 +120,7 @@ func configureDirectPath(grpcOpts []grpc.DialOption, opts *Options, endpoint str
 	})
 	if isDirectPathEnabled(endpoint, opts) && compute.OnComputeEngine() && isTokenProviderDirectPathCompatible(creds, opts) {
 		// Overwrite all of the previously specific DialOptions, DirectPath uses its own set of credentials and certificates.
-		defaultCredetialsOptions := grpcgoogle.DefaultCredentialsOptions{PerRPCCreds: &grpcCredentialsProvider{creds: creds}}
+		defaultCredetialsOptions := grpcgoogle.DefaultCredentialsOptions{PerRPCCreds: &grpcCredentialsProvider{creds: creds, endpoint: endpoint}}
 		if isDirectPathBoundTokenEnabled(opts.InternalOptions) && isTokenProviderComputeEngine(creds) {
 			optsClone := opts.resolveDetectOptions()
 			optsClone.TokenBindingType = credentials.ALTSHardBinding
@@ -128,7 +128,7 @@ func configureDirectPath(grpcOpts []grpc.DialOption, opts *Options, endpoint str
 			if err != nil {
 				return nil, "", err
 			}
-			defaultCredetialsOptions.ALTSPerRPCCreds = &grpcCredentialsProvider{creds: altsCreds}
+			defaultCredetialsOptions.ALTSPerRPCCreds = &grpcCredentialsProvider{creds: altsCreds, endpoint: endpoint}
 		}
 		grpcOpts = []grpc.DialOption{
 			grpc.WithCredentialsBundle(grpcgoogle.NewDefaultCredentialsWithOptions(defaultCredetialsOptions))}

vendor/cloud.google.com/go/auth/grpctransport/grpctransport.go

@@ -358,6 +358,7 @@ func dial(ctx context.Context, secure bool, opts *Options) (*grpc.ClientConn, er
 				creds:                creds,
 				metadata:             metadata,
 				clientUniverseDomain: opts.UniverseDomain,
+				endpoint:             transportCreds.Endpoint,
 			}),
 		)
 		// Attempt Direct Path
@@ -405,6 +406,7 @@ type grpcCredentialsProvider struct {
 	// Additional metadata attached as headers.
 	metadata             map[string]string
 	clientUniverseDomain string
+	endpoint             string
 }
 
 // getClientUniverseDomain returns the default service domain for a given Cloud
@@ -447,7 +449,7 @@ func (c *grpcCredentialsProvider) GetRequestMetadata(ctx context.Context, uri ..
 		}
 	}
 	metadata := make(map[string]string, len(c.metadata)+1)
-	headers.SetAuthMetadata(token, metadata)
+	headers.SetAuthMetadata(ctx, token, c.endpoint, metadata)
 	for k, v := range c.metadata {
 		metadata[k] = v
 	}

vendor/cloud.google.com/go/auth/httptransport/transport.go

@@ -284,6 +284,11 @@ func (t *otelAttributeTransport) RoundTrip(req *http.Request) (*http.Response, e
 	}
 
 	resp, err := t.base.RoundTrip(req)
+	if gax.IsFeatureEnabled("METRICS") {
+		if data != nil && resp != nil {
+			data.SetHTTPStatusCode(resp.StatusCode)
+		}
+	}
 
 	var logger *slog.Logger
 	if gax.IsFeatureEnabled("LOGGING") {

vendor/cloud.google.com/go/auth/internal/internal.go

@@ -48,11 +48,8 @@ const (
 	// Universe domain is the default service domain for a given Cloud universe.
 	DefaultUniverseDomain = "googleapis.com"
 
-	// TrustBoundaryNoOp is a constant indicating no trust boundary is enforced.
-	TrustBoundaryNoOp = "0x0"
-
-	// TrustBoundaryDataKey is the key used to store trust boundary data in a token's metadata.
-	TrustBoundaryDataKey = "google.auth.trust_boundary_data"
+	// RegionalAccessBoundaryDataKey is the key used to store regional access boundary data in a token's metadata.
+	RegionalAccessBoundaryDataKey = "google.auth.regional_access_boundary_data"
 )
 
 type clonableTransport interface {
@@ -231,55 +228,35 @@ func FormatIAMServiceAccountResource(name string) string {
 	return fmt.Sprintf("projects/-/serviceAccounts/%s", name)
 }
 
-// TrustBoundaryData represents the trust boundary data associated with a token.
+// RegionalAccessBoundaryData represents the regional access boundary data associated with a token.
 // It contains information about the regions or environments where the token is valid.
-type TrustBoundaryData struct {
+type RegionalAccessBoundaryData struct {
 	// Locations is the list of locations that the token is allowed to be used in.
 	Locations []string
 	// EncodedLocations represents the locations in an encoded format.
 	EncodedLocations string
 }
 
-// NewTrustBoundaryData returns a new TrustBoundaryData with the specified locations and encoded locations.
-func NewTrustBoundaryData(locations []string, encodedLocations string) *TrustBoundaryData {
+// NewRegionalAccessBoundaryData returns a new RegionalAccessBoundaryData with the specified locations and encoded locations.
+func NewRegionalAccessBoundaryData(locations []string, encodedLocations string) *RegionalAccessBoundaryData {
 	// Ensure consistency by treating a nil slice as an empty slice.
 	if locations == nil {
 		locations = []string{}
 	}
 	locationsCopy := make([]string, len(locations))
 	copy(locationsCopy, locations)
-	return &TrustBoundaryData{
+	return &RegionalAccessBoundaryData{
 		Locations:        locationsCopy,
 		EncodedLocations: encodedLocations,
 	}
 }
 
-// NewNoOpTrustBoundaryData returns a new TrustBoundaryData with no restrictions.
-func NewNoOpTrustBoundaryData() *TrustBoundaryData {
-	return &TrustBoundaryData{
-		Locations:        []string{},
-		EncodedLocations: TrustBoundaryNoOp,
-	}
-}
-
-// TrustBoundaryHeader returns the value for the x-allowed-locations header and a bool
-// indicating if the header should be set. The return values are structured to
-// handle three distinct states required by the backend:
-// 1. Header not set: (value="", present=false) -> data is empty.
-// 2. Header set to an empty string: (value="", present=true) -> data is a no-op.
-// 3. Header set to a value: (value="...", present=true) -> data has locations.
-func (t TrustBoundaryData) TrustBoundaryHeader() (value string, present bool) {
+// RegionalAccessBoundaryHeader returns the value for the x-allowed-locations header and a bool
+// indicating if the header should be set. If EncodedLocations is empty, the header
+// should not be present. Otherwise, it should be present with the value of EncodedLocations.
+func (t RegionalAccessBoundaryData) RegionalAccessBoundaryHeader() (value string, present bool) {
 	if t.EncodedLocations == "" {
-		// If the data is empty, the header should not be present.
 		return "", false
 	}
-
-	// If data is not empty, the header should always be present.
-	present = true
-	value = ""
-	if t.EncodedLocations != TrustBoundaryNoOp {
-		value = t.EncodedLocations
-	}
-	// For a no-op, the backend requires an empty string.
-	return value, present
+	return t.EncodedLocations, true
 }