kafka註冊異常

問題描述：

　　kafka註冊異常,提示brokers id已經被註冊過

19-02-22 14:43:51,393] FATAL [Kafka Server 1], Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.lang.RuntimeException: A broker is already registered on the path /brokers/ids/1. This probably indicates that you either have configured
 a brokerid that is already in use, or else you have shutdown this broker and restarted it faster than the zookeeper timeout so it appears to be re-registering.    at kafka.utils.ZkUtils.registerBrokerInZk(ZkUtils.scala:417)
    at kafka.utils.ZkUtils.registerBrokerInZk(ZkUtils.scala:403)
    at kafka.server.KafkaHealthcheck.register(KafkaHealthcheck.scala:70)
    at kafka.server.KafkaHealthcheck.startup(KafkaHealthcheck.scala:50)
    at kafka.server.KafkaServer.startup(KafkaServer.scala:280)
    at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
    at kafka.Kafka$.main(Kafka.scala:65)
    at kafka.Kafka.main(Kafka.scala)
[2019-02-22 14:43:51,401] INFO [Kafka Server 1], shutting down (kafka.server.KafkaServer)

問題解決：

　　根據日誌提示/brokers 已經在zookeeper註冊，因此須要在zookeeper中刪除/brokers，或者修改kafka的server.properties配置文件的broker id 

ls  /   查看zookeeper中根目錄

rmr /brokers    刪除kafka-brokers在zookeeper