Server: add prometheus with node exporter

roles/server/default.nix

@@ -15,6 +15,7 @@
     ./caddy.nix
     ./rust_motd.nix
     ./adguard.nix
+    ./prometheus.nix
     ./changedetection-io.nix
   ];
 }

roles/server/prometheus.nix

@@ -0,0 +1,24 @@
+{...}: {
+  services.prometheus = {
+    enable = true;
+    enableReload = true;
+    exporters = {
+      node = {
+        enable = true;
+        enabledCollectors = ["systemd"];
+        listenAddress = "127.0.0.1";
+        port = 9002;
+      };
+    };
+    scrapeConfigs = [
+      {
+        job_name = "everest-node";
+        static_configs = [
+          {
+            targets = ["127.0.0.1:9002"];
+          }
+        ];
+      }
+    ];
+  };
+}