monitoring-client: add prometheus node-exporter

modules/monitoring-client/default.nix

@@ -26,5 +26,15 @@ in
         LoadCredential = "loki_basic_auth_password_file:${config.momo-cloud.monitoring-client.basicAuthPasswordFile}";
       };
     };
+
+    services.prometheus = {
+      exporters = {
+        node = {
+          enable = true;
+          enabledCollectors = [ "systemd" ];
+          port = 9002;
+        };
+      };
+    };
   };
 }