修改3个broker中的kafka-logs/meta.properties中的cluster.id保持一致
不知做了什么操作，当我启动kafka集群时，总是只能启动两个节点
1.最开始怀疑是server.properties或zookeeper.properties中配置有问题，检查一遍是没问题的
2.只能百度一下，看到可能是log.dir(我的默认/tmp/kafka-logs)目录下的meta.properties中的broker.id冲突，检查之后也没有异常
3.但发现了cluster.id不一致，查看$KAFKA_HOME/logs/server.log中有如下报错，总之意思就是两个集群id冲突，导致后启动的启动不了，改为一致后重启kafka就ok了
[2022-01-19 14:09:12,220] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer) kafka.common.InconsistentClusterIdException: The Cluster ID __aUHET2Qe6O706Kndspug doesn't match stored clusterId Some(S5_czLVbTe6k6qf-XKGYTQ) in meta.properties. The broker is trying to join the wrong cluster. Configured zookeeper.connect may be wrong.
