modules: init prometheus

modules/default.nix

@@ -8,5 +8,6 @@
     ./openssh.nix
     ./virtualisation.nix
     ./sops.nix
+    ./prometheus.nix
   ];
 }

modules/prometheus.nix

@@ -0,0 +1,24 @@
+_: {
+  networking.firewall.allowedTCPPorts = [9090];
+  services.prometheus = {
+    enable = true;
+    scrapeConfigs = [
+      {
+        job_name = "prometheus";
+        scrape_interval = "30s";
+        static_configs = [{targets = ["localhost:9090"];}];
+      }
+      {
+        job_name = "node";
+        scrape_interval = "30s";
+        static_configs = [{targets = ["localhost:9100"];}];
+      }
+    ];
+    exporters = {
+      node = {
+        enable = true;
+        enabledCollectors = ["systemd" "cpu"];
+      };
+    };
+  };
+}