add panopticon

Signed-off-by: gwg313 <gwg313@pm.me>

hosts/panopticon/grafana.nix

@@ -0,0 +1,27 @@
+_: {
+  services.grafana = {
+    enable = true;
+    settings = {
+      server = {
+        http_addr = "127.0.0.1";
+        http_port = 3000;
+      };
+      security = {
+        admin_user = "admin";
+        admin_password = "changeme";
+      };
+    };
+
+    provision = {
+      datasources.settings.datasources = [
+        {
+          name = "Loki";
+          type = "loki";
+          access = "proxy";
+          url = "http://localhost:3100";
+          isDefault = true;
+        }
+      ];
+    };
+  };
+}