andriibeee 153c5bb803 lib/handshake: ignore TCP healthchecks in VMSelect just like in VMInsert
TCP healthchecks on the clusternative port of vmselect logs the following warning continuously:

    VictoriaMetrics/lib/vmselectapi/server.go:204 cannot complete vmselect handshake due to network error with client "10.129.30.27:43829": cannot read hello message : cannot read message with size 11: EOF; read only 0 bytes. Check vmselect logs for errors

This is in contrast to vminsert, where it seems like there's handling for these healthchecks:
```
 if errors.Is(err, io.EOF) {
 	// This is likely a TCP healthcheck, which must be ignored in order to prevent logs pollution.
 	// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1762
 	return errTCPHealthcheck
```

Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10786
2026-04-16 23:02:01 +02:00
2025-06-11 13:54:16 +02:00
2026-04-16 17:34:25 +03:00
2025-06-30 17:01:05 +02:00
2025-07-15 14:27:15 +03:00
2024-08-29 10:35:36 +02:00

VictoriaMetrics

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VictoriaMetrics is a fast, cost-effective, and scalable solution for monitoring and managing time series data. It delivers high performance and reliability, making it an ideal choice for businesses of all sizes.

Here are some resources and information about VictoriaMetrics:

Yes, we open-source both the single-node VictoriaMetrics and the cluster version.

Prominent features

VictoriaMetrics is optimized for timeseries data, even when old time series are constantly replaced by new ones at a high rate, it offers a lot of features:

Enterprise version

In addition, the Enterprise version includes extra features:

  • Anomaly detection: Automation and simplification of your alerting rules, covering complex anomalies found in metrics data.
  • Backup automation: Automates regular backup procedures.
  • Multiple retentions: Reducing storage costs by specifying different retentions for different datasets.
  • Downsampling: Reducing storage costs and increasing performance for queries over historical data.
  • Stable releases with long-term support lines (LTS).
  • Comprehensive support: First-class consulting, feature requests and technical support provided by the core VictoriaMetrics dev team.
  • Many other features, which you can read about on the Enterprise page.

Contact us if you need enterprise support for VictoriaMetrics. Or you can request a free trial license here, downloaded Enterprise binaries are available at Github Releases.

We strictly apply security measures in everything we do. VictoriaMetrics has achieved security certifications for Database Software Development and Software-Based Monitoring Services. See Security page for more details.

Benchmarks

Some good benchmarks VictoriaMetrics achieved:

Community and contributions

Feel free asking any questions regarding VictoriaMetrics:

If you like VictoriaMetrics and want to contribute, then please read these docs.

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