174 lines
4.0 KiB
Nix
174 lines
4.0 KiB
Nix
{ config, lib, pkgs, ... }:
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with builtins;
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with lib;
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let
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cfg = config.krebs.kapacitor;
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out = {
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options.krebs.kapacitor = api;
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config = mkIf cfg.enable imp;
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};
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configOptions = recursiveUpdate {
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hostname = "localhost";
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data_dir = cfg.dataDir;
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http = {
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bind-address = ":9092";
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auth-enabled = false;
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log-enabled = false;
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gtgwrite-tracing = false;
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pprof-enabled = false;
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https-enabled = false;
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https-certificate = "/etc/ssl/kapacitor.pem";
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shutdown-timeout = "10s";
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shared-secret = "";
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};
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replay ={
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dir = "${cfg.dataDir}/replay";
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};
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storage = {
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boltdb = "${cfg.dataDir}/kapacitor.db";
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};
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task = {
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dir = "${cfg.dataDir}/tasks";
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snapshot-interval = "1m0s";
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};
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influxdb = [{
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enabled = true;
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name = "default";
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default = false;
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urls = ["http://localhost:8086"];
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username = "";
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password = "";
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ssl-ca = "";
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ssl-cert = "";
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ssl-key = "";
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insecure-skip-verify = false;
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timeout = "0s";
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disable-subscriptions = false;
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subscription-protocol = "http";
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udp-bind = "";
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udp-buffer = 1000;
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udp-read-buffer = 0;
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startup-timeout = "5m0s";
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subscriptions-sync-interval = "1m0s";
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influxdb.excluded-subscriptions = {
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_kapacitor = ["autogen"];
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};
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}];
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logging = {
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file = "STDERR";
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level = "INFO";
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};
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deadman = {
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interval = "10s";
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id = "{{ .Group }}:NODE_NAME for task '{{ .TaskName }}'";
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message = "{{ .ID }} is {{ if eq .Level \"OK\" }}alive{{ else }}dead{{ end }}: {{ index .Fields \"emitted\" | printf \"%0.3f\" }} points/INTERVAL.";
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global = false;
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};
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} cfg.extraConfig;
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api = {
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enable = mkEnableOption "kapacitor";
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dataDir = mkOption {
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type = types.str;
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default = "/var/lib/kapacitor";
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};
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user = mkOption {
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type = types.user;
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default = {
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name = "kapacitor";
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home = cfg.dataDir;
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};
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};
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group = mkOption {
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type = types.group;
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default = {
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name = "kapacitor";
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};
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};
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extraConfig = mkOption {
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type = types.attrs;
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default = {};
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};
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alarms = mkOption {
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type = with types; attrsOf (submodule {
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options = {
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database = mkOption {
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type = str;
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};
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text = mkOption {
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type = str;
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};
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};
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});
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default = {};
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};
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};
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configFile = pkgs.runCommand "kapacitor.toml" {} ''
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${pkgs.remarshal}/bin/remarshal -if json -of toml \
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< ${pkgs.writeText "kapacitor.json" (builtins.toJSON configOptions)} \
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> $out
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'';
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imp = {
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users = {
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groups.${cfg.group.name} = {
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inherit (cfg.group) name gid;
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};
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users.${cfg.user.name} = {
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inherit (cfg.user) home name uid;
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createHome = true;
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group = cfg.group.name;
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};
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};
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systemd.services.kapacitor = {
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description = "kapacitor";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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restartIfChanged = true;
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serviceConfig = {
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Restart = "always";
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User = cfg.user.name;
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ExecStart = "${pkgs.kapacitor}/bin/kapacitord -config ${configFile}";
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};
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};
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systemd.services.kapacitor-alarms = {
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description = "kapacitor-alarms";
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after = [ "kapacitor.service" ];
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wantedBy = [ "multi-user.target" ];
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restartIfChanged = true;
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serviceConfig = {
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Type = "oneshot";
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User = cfg.user.name;
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ExecStart = pkgs.writeDash "add_alarms" ''
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${pkgs.kapacitor}/bin/kapacitor delete tasks \*
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${concatStrings (mapAttrsToList (name: alarm: ''
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${pkgs.kapacitor}/bin/kapacitor define ${name} \
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-type batch \
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-tick ${pkgs.writeText "${name}.tick" alarm.text} \
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-dbrp ${alarm.database}.default
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${pkgs.kapacitor}/bin/kapacitor enable ${name}
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'') cfg.alarms)}
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'';
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};
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};
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};
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in out
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