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nixpkgs/nixos/modules/services/logging/vector.nix
2022-09-09 11:59:07 -04:00

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Nix

{ config, lib, pkgs, ... }:
with lib;
let cfg = config.services.vector;
in
{
options.services.vector = {
enable = mkEnableOption (lib.mdDoc "Vector");
journaldAccess = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Enable Vector to access journald.
'';
};
settings = mkOption {
type = (pkgs.formats.json { }).type;
default = { };
description = lib.mdDoc ''
Specify the configuration for Vector in Nix.
'';
};
};
config = mkIf cfg.enable {
users.groups.vector = { };
users.users.vector = {
description = "Vector service user";
group = "vector";
isSystemUser = true;
};
systemd.services.vector = {
description = "Vector event and log aggregator";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
requires = [ "network-online.target" ];
serviceConfig =
let
format = pkgs.formats.toml { };
conf = format.generate "vector.toml" cfg.settings;
validateConfig = file:
pkgs.runCommand "validate-vector-conf" {
nativeBuildInputs = [ pkgs.buildPackages.vector ];
} ''
vector validate --no-environment "${file}"
ln -s "${file}" "$out"
'';
in
{
ExecStart = "${pkgs.vector}/bin/vector --config ${validateConfig conf}";
User = "vector";
Group = "vector";
Restart = "no";
StateDirectory = "vector";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
# This group is required for accessing journald.
SupplementaryGroups = mkIf cfg.journaldAccess "systemd-journal";
};
};
};
}