code: func NewHook(host string, port int) *FluentHook {
  	hook, _ := NewWithConfig(Config{
  		Host:                  host,
  		Port:                  port,
  		DefaultMessageField:   MessageField,
  		DisableConnectionPool: true,
  	})
  	return hook
  }
docs: // NewHook returns initialized logrus hook for fluentd.
  // (** deperecated: use New() or NewWithConfig() **)