add 503 error

Author: rahgozar94725

nginx/nginx-sample.conf

@@ -157,7 +157,8 @@ http {
             grpc_pass grpc://127.0.0.1:$1;
         }
         location / {
-            proxy_pass http://sub.test.com;
+            root /usr/share/nginx/html;
+            return 503;
         }
     }
 }