Kafka起不来（ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServe）

1.查看日志：

ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING
        at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply$mcV$sp(ZooKeeperClient.scala:259)
        at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:255)
        at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:255)
        at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:253)
        at kafka.zookeeper.ZooKeeperClient.kafka$zookeeper$ZooKeeperClient$$waitUntilConnected(ZooKeeperClient.scala:255)
        at kafka.zookeeper.ZooKeeperClient.<init>(ZooKeeperClient.scala:113)
        at kafka.zk.KafkaZkClient$.apply(KafkaZkClient.scala:1857)
        at kafka.server.KafkaServer.kafka$server$KafkaServer$$createZkClient$1(KafkaServer.scala:374)
        at kafka.server.KafkaServer$$anonfun$initZkClient$2.apply(KafkaServer.scala:393)
        at kafka.server.KafkaServer$$anonfun$initZkClient$2.apply(KafkaServer.scala:391)
        at scala.Option.foreach(Option.scala:257)
        at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:391)
        at kafka.server.KafkaServer.startup(KafkaServer.scala:207)
        at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:44)
        at kafka.Kafka$.main(Kafka.scala:84)
        at kafka.Kafka.main(Kafka.scala)

2.发现是连接超时

kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection

3.修改server.properties文件的超时时间

zookeeper.connection.timeout.ms=60000