Kafka连接zookeeper超时

一个头疼的事：kafka和zookeeper，部署在一台服务器，zookeeper正常启动，配置也没任何问题。但是kafka就是报错（内容如下）.

ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING

配置文件检查好几遍没有错，防火墙也没有开，zookeeper正常启动，配置的都是内网。终于，也是瞎猫碰死耗子，修改了kafka连接zookeeper的超时时间，然后居然启动了！！！配置内容如下：

# root directory for all kafka znodes.
zookeeper.connect=10.0.1.219:2181

# Timeout in ms for connecting to zookeeper
zookeeper.connection.timeout.ms=18000  #修改这里，时间改的长一些

希望可以帮助到大家！！