72 lines
2.7 KiB
Nix
72 lines
2.7 KiB
Nix
{ config, pkgs, lib, ... }:
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let cfg = config.services.victoriametrics; in
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{
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options.services.victoriametrics = with lib; {
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enable = mkEnableOption (lib.mdDoc "VictoriaMetrics, a time series database, long-term remote storage for Prometheus");
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package = mkPackageOption pkgs "victoriametrics" { };
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listenAddress = mkOption {
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default = ":8428";
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type = types.str;
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description = lib.mdDoc ''
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The listen address for the http interface.
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'';
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};
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retentionPeriod = mkOption {
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type = types.int;
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default = 1;
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description = lib.mdDoc ''
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Retention period in months.
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'';
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};
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extraOptions = mkOption {
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type = types.listOf types.str;
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default = [];
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description = lib.mdDoc ''
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Extra options to pass to VictoriaMetrics. See the README:
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<https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/README.md>
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or {command}`victoriametrics -help` for more
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information.
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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systemd.services.victoriametrics = {
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description = "VictoriaMetrics time series database";
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after = [ "network.target" ];
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startLimitBurst = 5;
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serviceConfig = {
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Restart = "on-failure";
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RestartSec = 1;
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StateDirectory = "victoriametrics";
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DynamicUser = true;
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ExecStart = ''
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${cfg.package}/bin/victoria-metrics \
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-storageDataPath=/var/lib/victoriametrics \
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-httpListenAddr ${cfg.listenAddress} \
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-retentionPeriod ${toString cfg.retentionPeriod} \
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${lib.escapeShellArgs cfg.extraOptions}
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'';
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# victoriametrics 1.59 with ~7GB of data seems to eventually panic when merging files and then
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# begins restart-looping forever. Set LimitNOFILE= to a large number to work around this issue.
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#
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# panic: FATAL: unrecoverable error when merging small parts in the partition "/var/lib/victoriametrics/data/small/2021_08":
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# cannot open source part for merging: cannot open values file in stream mode:
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# cannot open file "/var/lib/victoriametrics/data/small/2021_08/[...]/values.bin":
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# open /var/lib/victoriametrics/data/small/2021_08/[...]/values.bin: too many open files
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LimitNOFILE = 1048576;
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};
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wantedBy = [ "multi-user.target" ];
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postStart =
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let
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bindAddr = (lib.optionalString (lib.hasPrefix ":" cfg.listenAddress) "127.0.0.1") + cfg.listenAddress;
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in
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lib.mkBefore ''
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until ${lib.getBin pkgs.curl}/bin/curl -s -o /dev/null http://${bindAddr}/ping; do
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sleep 1;
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done
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'';
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};
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};
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}
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