do-agent: init at 3.5.6 (#69186)

do-agent: init at 3.5.6

maintainers/maintainer-list.nix

@@ -7140,6 +7140,12 @@
     githubId = 1866448;
     name = "Eric Bailey";
   };
+  yvt = {
+    email = "i@yvt.jp";
+    github = "yvt";
+    githubId = 5253988;
+    name = "yvt";
+  };
   z77z = {
     email = "maggesi@math.unifi.it";
     github = "maggesi";

nixos/modules/module-list.nix

@@ -503,6 +503,7 @@
   ./services/monitoring/das_watchdog.nix
   ./services/monitoring/datadog-agent.nix
   ./services/monitoring/dd-agent/dd-agent.nix
+  ./services/monitoring/do-agent.nix
   ./services/monitoring/fusion-inventory.nix
   ./services/monitoring/grafana.nix
   ./services/monitoring/grafana-reporter.nix

nixos/modules/services/monitoring/do-agent.nix

@@ -0,0 +1,34 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.do-agent;
+in
+{
+  options.services.do-agent = {
+    enable = mkEnableOption "do-agent, the DigitalOcean droplet metrics agent";
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.do-agent ];
+
+    systemd.services.do-agent = {
+      description = "DigitalOcean Droplet Metrics Agent";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-online.target" ];
+      wants = [ "network-online.target" ];
+      serviceConfig = {
+        ExecStart = "${pkgs.do-agent}/bin/do-agent --syslog";
+        Restart = "always";
+        OOMScoreAdjust = -900;
+        SyslogIdentifier = "DigitalOceanAgent";
+        PrivateTmp = "yes";
+        ProtectSystem = "full";
+        ProtectHome = "yes";
+        NoNewPrivileges = "yes";
+        DynamicUser = "yes";
+      };
+    };
+  };
+}

pkgs/servers/monitoring/do-agent/default.nix

@@ -0,0 +1,33 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "do-agent";
+  version = "3.5.6";
+
+  src = fetchFromGitHub {
+    owner = "digitalocean";
+    repo = "do-agent";
+    rev = "${version}";
+    sha256 = "1gl034cslqa30fqy2p9rymgx398s1rcgbmfvzk5zjlrw47327k8i";
+  };
+
+  buildFlagsArray = ''
+    -ldflags=
+      -X main.version=${version}
+  '';
+
+  modSha256 = "164bwqg996097db399j7lar6gj9xpshjdmyapvzg7zh655xlkf3d";
+
+  meta = with lib; {
+    description = "DigitalOcean droplet system metrics agent";
+    longDescription = ''
+      do-agent is a program provided by DigitalOcean that collects system
+      metrics from a DigitalOcean Droplet (on which the program runs) and sends
+      them to DigitalOcean to provide resource usage graphs and alerting.
+    '';
+    homepage = https://github.com/digitalocean/do-agent;
+    license = licenses.asl20;
+    maintainers = with maintainers; [ yvt ];
+    platforms = platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -14650,6 +14650,8 @@ in
 
   dkimproxy = callPackage ../servers/mail/dkimproxy { };
 
+  do-agent = callPackage ../servers/monitoring/do-agent { };
+
   dovecot = callPackage ../servers/mail/dovecot { };
   dovecot_pigeonhole = callPackage ../servers/mail/dovecot/plugins/pigeonhole { };