Add dash

modules/nixos/server/dash.nix

@@ -0,0 +1,54 @@
+{ pkgs, lib, config, ... }:
+let
+  cfg = config.mods.server;
+  port = cfg.nginx.ports.dash;
+in with lib; {
+  options.mods.server = {
+    dash = {
+      enable = mkEnableOption {
+        default = false;
+        description = "enables metrics dashboard";
+      };
+    };
+  };
+
+  config = mkIf cfg.dash.enable {
+    services.grafana = {
+      enable = true;
+      domain = "dash.muon.host";
+      addr = "0.0.0.0";
+
+      provision.datasources.settings.datasources = [{
+        name = "Prometheus";
+        type = "Prometheus";
+        url = "http://localhost:${toString config.services.prometheus.port}";
+      }];
+
+      inherit port;
+    };
+
+    services.prometheus = {
+      enable = true;
+      port = 9001;
+
+      exporters = {
+        node = {
+          enable = true;
+          enabledCollectors = [ "systemd" ];
+          port = 9002;
+        };
+      };
+
+      scrapeConfigs = [{
+        job_name = "muho";
+        static_configs = [{
+          targets = [
+            "127.0.0.1:${
+              toString config.services.prometheus.exporters.node.port
+            }"
+          ];
+        }];
+      }];
+    };
+  };
+}