Enable slurm-exporter service

m/hut/monitoring.nix

@@ -1,6 +1,8 @@
 { config, lib, ... }:
 
 {
+  imports = [ ../module/slurm-exporter.nix ];
+
   services.grafana = {
     enable = true;
     settings = {
@@ -73,6 +75,7 @@
             "127.0.0.1:9323"
             "127.0.0.1:9252"
             "127.0.0.1:${toString config.services.prometheus.exporters.smartctl.port}"
+            "127.0.0.1:9341" # Slurm exporter
           ];
         }];
       }

m/module/slurm-exporter.nix

@@ -0,0 +1,35 @@
+{ config, lib, pkgs, ... }:
+
+# See also: https://github.com/NixOS/nixpkgs/pull/112010
+
+with lib;
+
+{
+  users = {
+    users."slurm-exporter" = {
+      description = "Prometheus slurm exporter service user";
+      isSystemUser = true;
+      group = "slurm-exporter";
+    };
+    groups = {
+      "slurm-exporter" = {};
+    };
+  };
+
+  systemd.services."prometheus-slurm-exporter" = {
+    wantedBy = [ "multi-user.target" ];
+    after = [ "network.target" ];
+    serviceConfig = {
+      Restart = mkDefault "always";
+      PrivateTmp = mkDefault true;
+      WorkingDirectory = mkDefault "/tmp";
+      DynamicUser = mkDefault true;
+      User = "slurm-exporter";
+      Group = "slurm-exporter";
+      ExecStart = ''
+        ${pkgs.prometheus-slurm-exporter}/bin/prometheus-slurm-exporter --listen-address "127.0.0.1:9341"
+      '';
+      Environment = [ "PATH=${pkgs.slurm}/bin" ];
+    };
+  };
+}