add grafana stuff

clients/quadraticserver/stats/grafana.nix

@@ -0,0 +1,58 @@
+{ config, pkgs, ... }:
+{
+  services =
+    let
+      domain = "status.federated.nexus";
+    in
+    {
+      grafana = {
+        enable = true;
+        declarativePlugins = [ ];
+        settings = {
+          analytics.feedback_links_enabled = false;
+          server = {
+            inherit domain;
+            protocol = "socket";
+
+            enable_gzip = true;
+          };
+
+          security = {
+            cookie_secure = true;
+            secret_key = "$__file{${config.age.secrets."grafanaSecret.age".path}}";
+
+            admin_user = "quadradical";
+            admin_password = "$__file{${config.age.secrets."grafanaPassword.age".path}}";
+          };
+        };
+
+        provision = {
+          enable = true;
+          datasources.settings.datasources = [
+            {
+              name = "Prometheus";
+              type = "prometheus";
+              url = with config.services.prometheus; "http://${listenAddress}:${toString port}";
+              jsonData = {
+                timeInterval = config.services.prometheus.globalConfig.scrape_interval;
+              };
+            }
+          ];
+
+          dashboards.settings.providers = [
+            {
+              name = "Node exporter";
+              options.path = pkgs.fetchurl {
+                name = "dashboard-node-exporter-full.json";
+                url = "https://grafana.com/api/dashboards/1860/revisions/42/download";
+                hash = "";
+              };
+            }
+          ];
+        };
+      };
+      caddy.virtualHosts."${domain}".extraConfig =
+        "reverse_proxy unix/${config.services.grafana.settings.server.socket}";
+    };
+  users.users.grafana = "caddy";
+}