kafka KeeperErrorCode = NodeExists 错误

增加kafka节点，对原有节点的顺序做了调整，报错如下：

cxid:0x2a zxid:0x1e txntype:-1 reqpath:n/a Error Path:/brokers/ids Error:KeeperErrorCode = NodeExists for /brokers/ids (org.apache.zookeeper.server.PrepRequestProcessor)

检查配置server.properties

# cat /bigdata/kafka/config/server.properties
broker.id=2  //id重复了，改一个kafka集群中，没有id

重启kafka后，上面的报错没有了，但又出了新的报错

[2019-10-16 11:30:14,977] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.common.InconsistentBrokerIdException: Configured broker.id 2 doesn't match stored broker.id 0 in meta.properties. If you moved your data, make sure your configured broker.id matches. If you intend to create a new broker, you should remove all data in your data directories (log.dirs).
at kafka.server.KafkaServer.getBrokerIdAndOfflineDirs(KafkaServer.scala:686)
at kafka.server.KafkaServer.startup(KafkaServer.scala:209)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
at kafka.Kafka$.main(Kafka.scala:75)
at kafka.Kafka.main(Kafka.scala)

解决办法：

# vim /bigdata/kafka/data/meta.properties
broker.id=2  //根server.properties一样