Set up monitoring via Prometheus and Grafana

modules/monitoring.nix

@@ -42,4 +42,41 @@ with pkgs;
     };
   };
 
+  # Metrics collection
+  services.prometheus = {
+    enable = true;
+    port = 9001;
+    exporters = {
+      node = {
+        enable = true;
+        enabledCollectors = [ "systemd" ];
+        port = 9002;
+      };
+      zfs.enable = true;
+      wireguard.enable = true;
+      postgres.enable = true;
+      smartctl.enable = true;
+      #nginx.enable = true;
+      dnsmasq.enable = true;
+    };
+    scrapeConfigs = [{
+      job_name = "zion";
+      static_configs = [{
+        targets = [
+          "localhost:${toString config.services.prometheus.exporters.node.port}"
+        ];
+      }];
+    }];
+  };
+
+  # Grafana configuration
+  services.grafana = {
+    enable = true;
+    settings.server = {
+      domain = "grafana.coolneng.duckdns.org";
+      http_port = 9009;
+      http_addr = "127.0.0.1";
+    };
+  };
+
 }

modules/webstack.nix

@@ -49,6 +49,12 @@
               add_header Access-Control-Allow-Origin * always;
             '';
           };
+          "/nginx_status/".extraConfig = ''
+            stub_status on;
+            access_log   off;
+            allow 127.0.0.1;
+            deny all;
+          '';
         };
       };
       "radicale.coolneng.duckdns.org" = {
@@ -150,6 +156,14 @@
           '';
         };
       };
+      "grafana.coolneng.duckdns.org" = {
+        enableACME = true;
+        forceSSL = true;
+        locations."/" = {
+          proxyPass = "http://localhost:9009/";
+          proxyWebsockets = true;
+        };
+      };
     };
   };