NGINX: Custom JSON status page with stub_status

gistfile1.txt

# Make sure the ngx_http_stub_status_module is installed correctly. 
location /status {
  add_header Content-Type application/json;
  return 200 '{\r
      "connections_active": $connections_active,\r
      "connections_reading": $connections_reading,\r
      "connections_writing": $connections_writing,\r
      "connections_waiting": $connections_waiting
    }';
  }
}