Nginx - Handle Response when Proxy is down

nginx_handle_proxy_down.md

When the proxied service is unavailable, Nginx will by default return HTTP code 502. We can change this response by the following config:

server {
  location {
      proxy_pass http://somehost/someuri
  }
  ...

  error_page 502 503 504 =503 @serviceunavailable;

  location @serviceunavailable {
     return 503 "Service is unavailable";
  }

...