nixpkgs/nixos/modules/services/databases/victoriametrics.nix

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{ config, pkgs, lib, ... }:
let cfg = config.services.victoriametrics; in
{
options.services.victoriametrics = with lib; {
enable = mkEnableOption "victoriametrics";
package = mkOption {
type = types.package;
default = pkgs.victoriametrics;
defaultText = "pkgs.victoriametrics";
description = ''
The VictoriaMetrics distribution to use.
'';
};
listenAddress = mkOption {
default = ":8428";
type = types.str;
description = ''
The listen address for the http interface.
'';
};
retentionPeriod = mkOption {
type = types.int;
default = 1;
description = ''
Retention period in months.
'';
};
extraOptions = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra options to pass to VictoriaMetrics. See the README: <link
xlink:href="https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/README.md" />
or <command>victoriametrics -help</command> for more
information.
'';
};
};
config = lib.mkIf cfg.enable {
systemd.services.victoriametrics = {
description = "VictoriaMetrics time series database";
after = [ "network.target" ];
startLimitBurst = 5;
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serviceConfig = {
Restart = "on-failure";
RestartSec = 1;
StateDirectory = "victoriametrics";
DynamicUser = true;
ExecStart = ''
${cfg.package}/bin/victoria-metrics \
-storageDataPath=/var/lib/victoriametrics \
-httpListenAddr ${cfg.listenAddress} \
-retentionPeriod ${toString cfg.retentionPeriod} \
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${lib.escapeShellArgs cfg.extraOptions}
'';
};
wantedBy = [ "multi-user.target" ];
postStart =
let
bindAddr = (lib.optionalString (lib.hasPrefix ":" cfg.listenAddress) "127.0.0.1") + cfg.listenAddress;
in
lib.mkBefore ''
until ${lib.getBin pkgs.curl}/bin/curl -s -o /dev/null http://${bindAddr}/ping; do
sleep 1;
done
'';
};
};
}