nixpkgs/nixos/modules/services/databases/victoriametrics.nix
pennae ef176dcf7e nixos/*: automatically convert option descriptions
conversions were done using https://github.com/pennae/nix-doc-munge
using (probably) rev f34e145 running

    nix-doc-munge nixos/**/*.nix
    nix-doc-munge --import nixos/**/*.nix

the tool ensures that only changes that could affect the generated
manual *but don't* are committed, other changes require manual review
and are discarded.
2022-08-31 16:32:53 +02:00

79 lines
2.8 KiB
Nix

{ config, pkgs, lib, ... }:
let cfg = config.services.victoriametrics; in
{
options.services.victoriametrics = with lib; {
enable = mkEnableOption (lib.mdDoc "victoriametrics");
package = mkOption {
type = types.package;
default = pkgs.victoriametrics;
defaultText = literalExpression "pkgs.victoriametrics";
description = lib.mdDoc ''
The VictoriaMetrics distribution to use.
'';
};
listenAddress = mkOption {
default = ":8428";
type = types.str;
description = lib.mdDoc ''
The listen address for the http interface.
'';
};
retentionPeriod = mkOption {
type = types.int;
default = 1;
description = lib.mdDoc ''
Retention period in months.
'';
};
extraOptions = mkOption {
type = types.listOf types.str;
default = [];
description = lib.mdDoc ''
Extra options to pass to VictoriaMetrics. See the README:
<https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/README.md>
or {command}`victoriametrics -help` for more
information.
'';
};
};
config = lib.mkIf cfg.enable {
systemd.services.victoriametrics = {
description = "VictoriaMetrics time series database";
after = [ "network.target" ];
startLimitBurst = 5;
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} \
${lib.escapeShellArgs cfg.extraOptions}
'';
# victoriametrics 1.59 with ~7GB of data seems to eventually panic when merging files and then
# begins restart-looping forever. Set LimitNOFILE= to a large number to work around this issue.
#
# panic: FATAL: unrecoverable error when merging small parts in the partition "/var/lib/victoriametrics/data/small/2021_08":
# cannot open source part for merging: cannot open values file in stream mode:
# cannot open file "/var/lib/victoriametrics/data/small/2021_08/[...]/values.bin":
# open /var/lib/victoriametrics/data/small/2021_08/[...]/values.bin: too many open files
LimitNOFILE = 1048576;
};
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
'';
};
};
}