optional int32 port = 1;

  // Service is the name of the service to place in the gRPC HealthCheckRequest
  // (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).
  //
  // If this is not specified, the default behavior is defined by gRPC.
  // +optional
  // +default=""
  optional string service = 2;
}