Prometheus (#14)

PulumiWebServer/Nix/prometheus/prometheus.nix

@@ -0,0 +1,46 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  options = {
+    services.prometheus-config = {
+      port = lib.mkOption {
+        type = lib.types.port;
+        description = lib.mdDoc "Prometheus localhost port";
+        default = 9002;
+      };
+      node-exporter-port = lib.mkOption {
+        type = lib.types.port;
+        description = lib.mdDoc "Localhost port for node exporter";
+        default = 9003;
+      };
+    };
+  };
+
+  config = {
+    services.prometheus = {
+      enable = true;
+      port = config.services.prometheus-config.port;
+      exporters = {
+        node = {
+          enable = true;
+          enabledCollectors = ["systemd"];
+          port = config.services.prometheus-config.node-exporter-port;
+        };
+      };
+
+      scrapeConfigs = [
+        {
+          job_name = "node";
+          static_configs = [
+            {
+              targets = ["localhost:${toString config.services.prometheus.exporters.node.port}"];
+            }
+          ];
+        }
+      ];
+    };
+  };
+}