{
  "admin": {
    "access_log_path": "/dev/null",
    "address": {
      "socket_address": {
        "address": "127.0.0.1",
        "port_value": 19000
      }
    }
  },
  "node": {
    "cluster": "test-proxy",
    "id": "test-proxy"
  },
  "custom_field": "foo"
}