Merge pull request #195205 from NULLx76/vmagent

nixos/modules/module-list.nix

···
   ./services/monitoring/unifi-poller.nix
   ./services/monitoring/ups.nix
   ./services/monitoring/uptime.nix
+  ./services/monitoring/vmagent.nix
   ./services/monitoring/vnstat.nix
   ./services/monitoring/zabbix-agent.nix
   ./services/monitoring/zabbix-proxy.nix

nixos/modules/services/monitoring/vmagent.nix

···
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  cfg = config.services.vmagent;
+  settingsFormat = pkgs.formats.json { };
+in {
+  options.services.vmagent = {
+    enable = mkEnableOption (lib.mdDoc "vmagent");
+
+    user = mkOption {
+      default = "vmagent";
+      type = types.str;
+      description = lib.mdDoc ''
+        User account under which vmagent runs.
+      '';
+    };
+
+    group = mkOption {
+      type = types.str;
+      default = "vmagent";
+      description = lib.mdDoc ''
+        Group under which vmagent runs.
+      '';
+    };
+
+    package = mkOption {
+      default = pkgs.vmagent;
+      defaultText = lib.literalMD "pkgs.vmagent";
+      type = types.package;
+      description = lib.mdDoc ''
+        vmagent package to use.
+      '';
+    };
+
+    dataDir = mkOption {
+      type = types.str;
+      default = "/var/lib/vmagent";
+      description = lib.mdDoc ''
+        The directory where vmagent stores its data files.
+      '';
+    };
+
+    remoteWriteUrl = mkOption {
+      default = "http://localhost:8428/api/v1/write";
+      type = types.str;
+      description = lib.mdDoc ''
+        The storage endpoint such as VictoriaMetrics
+      '';
+    };
+
+    prometheusConfig = mkOption {
+      type = lib.types.submodule { freeformType = settingsFormat.type; };
+      description = lib.mdDoc ''
+        Config for prometheus style metrics
+      '';
+    };
+
+    openFirewall = mkOption {
+      type = types.bool;
+      default = false;
+      description = lib.mdDoc ''
+        Whether to open the firewall for the default ports.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.groups = mkIf (cfg.group == "vmagent") { vmagent = { }; };
+
+    users.users = mkIf (cfg.user == "vmagent") {
+      vmagent = {
+        group = cfg.group;
+        description = "vmagent daemon user";
+        home = cfg.dataDir;
+        isSystemUser = true;
+      };
+    };
+
+    networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [ 8429 ];
+
+    systemd.services.vmagent = let
+      prometheusConfig = settingsFormat.generate "prometheusConfig.yaml" cfg.prometheusConfig;
+    in {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+      description = "vmagent system service";
+      serviceConfig = {
+        User = cfg.user;
+        Group = cfg.group;
+        Type = "simple";
+        Restart = "on-failure";
+        WorkingDirectory = cfg.dataDir;
+        ExecStart = "${cfg.package}/bin/vmagent -remoteWrite.url=${cfg.remoteWriteUrl} -promscrape.config=${prometheusConfig}";
+      };
+    };
+
+    systemd.tmpfiles.rules =
+      [ "d '${cfg.dataDir}' 0755 ${cfg.user} ${cfg.group} -" ];
+  };
+}

pkgs/servers/monitoring/vmagent/default.nix

···
+{ lib, fetchFromGitHub, buildGoModule }:
+buildGoModule rec {
+  pname = "vmagent";
+  version = "1.82.0";
+
+  src = fetchFromGitHub {
+    owner = "VictoriaMetrics";
+    repo = "VictoriaMetrics";
+    rev = "v${version}";
+    sha256 = "JIl2WeveDoAHzqJ2cqMxpWeNf4yQC9fIdfECOJywJ2A=";
+  };
+
+  ldflags = [ "-s" "-w" "-X github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo.Version=${version}" ];
+
+  vendorSha256 = null;
+
+  subPackages = [ "app/vmagent" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/app/vmagent";
+    description = "VictoriaMetrics metrics scraper";
+    license = licenses.asl20;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ nullx76 ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   virtualenv-clone = with python3Packages; toPythonApplication virtualenv-clone;
 
+  vmagent = callPackage ../servers/monitoring/vmagent { };
+
   vsftpd = callPackage ../servers/ftp/vsftpd { };
 
   wallabag = callPackage ../servers/web-apps/wallabag { };