heapster module: init

nixos/modules/misc/ids.nix

@@ -235,6 +235,7 @@
       kibana = 211;
       xtreemfs = 212;
       calibre-server = 213;
+      heapster = 214;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 

nixos/modules/module-list.nix

@@ -238,6 +238,7 @@
   ./services/monitoring/dd-agent.nix
   ./services/monitoring/grafana.nix
   ./services/monitoring/graphite.nix
+  ./services/monitoring/heapster.nix
   ./services/monitoring/monit.nix
   ./services/monitoring/munin.nix
   ./services/monitoring/nagios.nix

nixos/modules/services/monitoring/heapster.nix

@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.heapster;
+in {
+  options.services.heapster = {
+    enable = mkOption {
+      description = "Whether to enable heapster monitoring";
+      default = false;
+      type = types.bool;
+    };
+
+    source = mkOption {
+      description = "Heapster metric source";
+      example = "kubernetes:https://kubernetes.default";
+      type = types.string;
+    };
+
+    sink = mkOption {
+      description = "Heapster metic sink";
+      example = "influxdb:http://localhost:8086";
+      type = types.string;
+    };
+
+    extraOpts = mkOption {
+      description = "Heapster extra options";
+      default = "";
+      type = types.string;
+    };
+
+    package = mkOption {
+      description = "Package to use by heapster";
+      default = pkgs.heapster;
+      type = types.package;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.heapster = {
+      wantedBy = ["multi-user.target"];
+      after = ["cadvisor.service" "kube-apiserver.service"];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/heapster --source=${cfg.source} --sink=${cfg.sink} ${cfg.extraOpts}";
+        User = "heapster";
+      };
+    };
+
+    users.extraUsers = singleton {
+      name = "heapster";
+      uid = config.ids.uids.heapster;
+      description = "Heapster user";
+    };
+  };
+}