feat: monitoring + containers - grafana + prometheus + node_exporter + other exporters

hosts/idols_ruby/grafana/default.nix

@@ -0,0 +1,52 @@
+{
+  config,
+  pkgs,
+  username,
+  useremail,
+  ...
+}: {
+  services.grafana = {
+    enable = true;
+    dataDir = "/var/lib/grafana";
+    # DeclarativePlugins = with pkgs.grafanaPlugins; [ grafana-piechart-panel ];
+    settings = {
+      server = {
+        http_addr = "0.0.0.0";
+        http_port = 80;
+        protocol = "http";
+        domain = "grafana.writefo.fun";
+        # Redirect to correct domain if the host header does not match the domain. Prevents DNS rebinding attacks.
+        serve_from_sub_path = false;
+        # Add subpath to the root_url if serve_from_sub_path is true
+        root_url = "%(protocol)s://%(domain)s:%(http_port)s/";
+        enforce_domain = false;
+        read_timeout = "180s";
+        # Enable HTTP compression, this can improve transfer speed and bandwidth utilization.
+        enable_gzip = true;
+        # Cdn for accelerating loading of frontend assets.
+        # cdn_url = "https://cdn.jsdelivr.net/npm/grafana@7.5.5";
+      };
+
+      security = {
+        admin_user = username;
+        admin_email = useremail;
+        # Use file provider to read the admin password from a file.
+        # https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#file-provider
+        admin_password = "$__file{${config.age.secrets."grafana-admin-password".path}}";
+      };
+      users = {
+        allow_sign_up = false;
+        # home_page = "";
+        default_theme = "dark";
+      };
+    };
+
+    # Declaratively provision Grafana's data sources, dashboards, and alerting rules.
+    # Grafana's alerting rules is not recommended to use, we use Prometheus alertmanager instead.
+    # https://grafana.com/docs/grafana/latest/administration/provisioning/#data-sources
+    provision = {
+      datasources.path = ./datasources.yml;
+      dashboards.path = ./dashboards.yml;
+    };
+  };
+}