Aliaksandr Valialkin
06f590ee63
lib/envtemplate: allow referring non-existing environment variables in config files and in command-line flags
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A few users reported unexpected errors when environment variables referred other environment variables
at VictoriaMetrics startup. This resulted in the following fatal error on startup:
cannot expand "..." env var value "...%{SOME_NON_EXISTING_ENV_VAR}..."
Fix this by leaving placeholders with non-existing env vars as is.
This improves the general usability of environment variables by VictoriaMetrics components
inside command-line flags and inside config files. User can easily notice placeholders with non-existing
environment variables by looking at the corresponding command-line flag or at the corresponding config option value.
While at it, replace duplicate docs about environment variables at the https://docs.victoriametrics.com/victoriametrics/cluster-victoriametrics/#environment-variables
with the link to the same docs at https://docs.victoriametrics.com/victoriametrics/single-server-victoriametrics/#environment-variables .
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3999
2025-08-09 21:05:13 +02:00
Alexander Marshalov
7c86dcc4fa
allowed using dashes and dots in environment variables names ( #4009 )
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* allowed using dashes and dots in environment variables names for templating config files with envtemplate (#3999 )
Signed-off-by: Alexander Marshalov <_@marshalov.org >
* Apply suggestions from code review
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Signed-off-by: Alexander Marshalov <_@marshalov.org >
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com >
2023-03-24 15:43:05 -07:00
Aliaksandr Valialkin
116811d761
lib/envtemplate: allow non-env var names inside "%{ ... }"
2022-11-07 13:58:27 +02:00
Aliaksandr Valialkin
518c340ae3
lib/envtemplate: allow referring env vars from other env vars via %{ENV_VAR} syntax
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This is a follow-up for 02096e06d0
2022-10-26 14:49:33 +03:00
Aliaksandr Valialkin
069401a304
all: log error when environment variables referred from -promscrape.config are missing
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This should prevent from using incorrect config files
2022-10-18 10:47:16 +03:00
Aliaksandr Valialkin
c402265e88
all: support %{ENV_VAR} placeholders in yaml configs in all the vm* components
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Such placeholders are substituted by the corresponding environment variable values.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/583
2020-08-13 17:15:25 +03:00
