grafana: add caddy metrics/dashboard

modules/nixos/services/homeserver/caddy.nix

@@ -52,6 +52,11 @@
       '';
       globalConfig = ''
         grace_period 30s
+
+        metrics {
+            per_host
+        }
+
         servers {
             client_ip_headers CF-Connecting-Ip X-Forwarded-For
             trusted_proxies cloudflare {

modules/nixos/services/homeserver/grafana/default.nix

@@ -67,8 +67,13 @@
       dashboards.settings.providers = [
         {
           name = "Node Exporter Full";
-          disableDeletion = true;
           options.path = ./dashboards/node-exporter-full.json;
+          disableDeletion = true;
+        }
+        {
+          name = "Caddy";
+          options.path = ./dashboards/caddy.json;
+          disableDeletion = true;
         }
       ];
 
@@ -116,6 +121,14 @@
           }
         ];
       }
+      {
+        job_name = "Caddy";
+        static_configs = [
+          {
+            targets = [ "localhost:2019" ];
+          }
+        ];
+      }
     ];
   };
 }