init monitoring module

modules/monitoring.nix

@@ -0,0 +1,44 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  cfg = config.cardano.http;
+  inherit (lib) mkIf mkDefault mkEnableOption optional;
+in {
+  options.cardano.http = {
+    enable = mkEnableOption ''
+      Monitoring via Prometheus and Grafana
+    '';
+  };
+  config = mkIf cfg.enable {
+    services.prometheus = {
+      enable = true;
+
+      # scrapeConfigs = { };
+
+      webExternalUrl = "https://prometheus.${config.networking.hostName}.${config.networking.domainName}";
+
+      alertmanager = {
+        enable = true;
+        webExternalUrl = "https://alerts.${config.networking.hostName}.${config.networking.domainName}";
+      };
+    };
+
+    services.grafana = {
+      enable = true;
+      settings = {
+        server = {
+          domain = "status.staging.mlabs.city";
+          http_addr = "127.0.0.1";
+          http_port = 2342;
+          root_url = "https://${config.services.grafana.settings.server.domain}:443/";
+        };
+        security = {
+          admin_user = "admin";
+          admin_password = "CHANGEME_uDZ2isTf";
+        };
+      };
+    };
+  };
+}

tests/default.nix

@@ -10,5 +10,6 @@
     ./ctl-8.nix
     ./blockfrost.nix
     ./oura.nix
+    ./monitoring.nix
   ];
 }

tests/monitoring.nix

@@ -0,0 +1,23 @@
+{
+  perSystem.vmTests.tests.monitoring = {
+    impure = true;
+    module = {
+      nodes.machine = {pkgs, ...}: {
+        cardano = {
+          network = "preview";
+          node.enable = true;
+          monitoring.enable = true;
+        };
+
+        environment.systemPackages = with pkgs; [jq bc];
+      };
+
+      testScript = ''
+        machine.wait_for_unit("cardano-node")
+        # TODO
+        machine.succeed("false")
+        print('\nVM Test Succeeded.')
+      '';
+    };
+  };
+}