137 lines
3.2 KiB
Nix
137 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.scollector;
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collectors = pkgs.runCommand "collectors" {}
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''
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mkdir -p $out
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${lib.concatStringsSep
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"\n"
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(lib.mapAttrsToList
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(frequency: binaries:
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"mkdir -p $out/${frequency}\n" +
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(lib.concatStringsSep
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"\n"
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(map (path: "ln -s ${path} $out/${frequency}/$(basename ${path})")
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binaries)))
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cfg.collectors)}
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'';
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conf = pkgs.writeText "scollector.toml" ''
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Host = "${cfg.bosunHost}"
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ColDir = "${collectors}"
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${cfg.extraConfig}
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'';
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in {
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options = {
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services.scollector = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run scollector.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.scollector;
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defaultText = "pkgs.scollector";
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example = literalExample "pkgs.scollector";
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description = ''
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scollector binary to use.
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'';
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};
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user = mkOption {
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type = types.string;
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default = "scollector";
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description = ''
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User account under which scollector runs.
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'';
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};
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group = mkOption {
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type = types.string;
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default = "scollector";
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description = ''
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Group account under which scollector runs.
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'';
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};
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bosunHost = mkOption {
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type = types.string;
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default = "localhost:8070";
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description = ''
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Host and port of the bosun server that will store the collected
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data.
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'';
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};
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collectors = mkOption {
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type = with types; attrsOf (listOf path);
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default = {};
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example = literalExample "{ \"0\" = [ \"\${postgresStats}/bin/collect-stats\" ]; }";
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description = ''
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An attribute set mapping the frequency of collection to a list of
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binaries that should be executed at that frequency. You can use "0"
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to run a binary forever.
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'';
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};
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extraOpts = mkOption {
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type = with types; listOf str;
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default = [];
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example = [ "-d" ];
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description = ''
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Extra scollector command line options
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra scollector configuration added to the end of scollector.toml
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'';
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};
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};
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};
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config = mkIf config.services.scollector.enable {
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systemd.services.scollector = {
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description = "scollector metrics collector (part of Bosun)";
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.coreutils pkgs.iproute ];
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serviceConfig = {
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PermissionsStartOnly = true;
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User = cfg.user;
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Group = cfg.group;
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ExecStart = "${cfg.package.bin}/bin/scollector -conf=${conf} ${lib.concatStringsSep " " cfg.extraOpts}";
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};
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};
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users.extraUsers.scollector = {
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description = "scollector user";
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group = "scollector";
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uid = config.ids.uids.scollector;
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};
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users.extraGroups.scollector.gid = config.ids.gids.scollector;
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};
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}
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