安装单机Kafka
步骤
安装kafka需要安装：JDK+Zookeeper+Kafka。
1.下载
下载地址: Apache Kafka
2.解压
3.修改配置
安装目录/config/server.properties
log.dirs=D:\Kafka\kafka_2.12-0.11.0.0\kafka-logs //日志路径
zookeeper.connect=localhost:2181 //zookeeper地址
broker.id=0 //broker的唯一id
4.启动
1.启动zookeeper
2.启动kafka
.\bin\windows\kafka-server-start.bat ..\..\config\server.properties
5.验证
可以通过查看zookeeper中的节点来确认kafka是否启动。
启动zookeeper的client（在命令行执行.\zkCli.cmd -server 127.0.0.1:2181），然后输入ls /brokers/ids
这里的0就是broker.id，可见我们刚才配置的kafka启动成功了。
问题解决
Kafka启动失败，查看kafka失败日志：Kafka安装目录/logs/server.log
ID不匹配
[2021-06-19 17:09:45,737] INFO Cluster ID = Gp_FULuuSTSKwBzkGtD1DQ (kafka.server.KafkaServer)
[2021-06-19 17:09:45,745] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.common.InconsistentClusterIdException: The Cluster ID Gp_FULuuSTSKwBzkGtD1DQ doesn't match stored clusterId Some(Ra3BVZxZSiqW7JomU_PWQA) in meta.properties. The broker is trying to join the wrong cluster. Configured zookeeper.connect may be wrong.
at kafka.server.KafkaServer.startup(KafkaServer.scala:252)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:44)
at kafka.Kafka$.main(Kafka.scala:82)
at kafka.Kafka.main(Kafka.scala)
[2021-06-19 17:09:45,747] INFO shutting down (kafka.server.KafkaServer)
[2021-06-19 17:09:45,749] INFO [feature-zk-node-event-process-thread]: Shutting down (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2021-06-19 17:09:45,750] INFO [feature-zk-node-event-process-thread]: Shutdown completed (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2021-06-19 17:09:45,750] INFO [feature-zk-node-event-process-thread]: Stopped (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2021-06-19 17:09:45,751] INFO [ZooKeeperClient Kafka server] Closing. (kafka.zookeeper.ZooKeeperClient)
[2021-06-19 17:09:45,865] INFO Session: 0x1002df2aca80000 closed (org.apache.zookeeper.ZooKeeper)
[2021-06-19 17:09:45,865] INFO EventThread shut down for session: 0x1002df2aca80000 (org.apache.zookeeper.ClientCnxn)
[2021-06-19 17:09:45,866] INFO [ZooKeeperClient Kafka server] Closed. (kafka.zookeeper.ZooKeeperClient)
[2021-06-19 17:09:45,871] INFO App info kafka.server for 0 unregistered (org.apache.kafka.common.utils.AppInfoParser)
[2021-06-19 17:09:45,871] INFO shut down completed (kafka.server.KafkaServer)
[2021-06-19 17:09:45,872] ERROR Exiting Kafka. (kafka.server.KafkaServerStartable)
[2021-06-19 17:09:45,873] INFO shutting down (kafka.server.KafkaServer)
主要是这句：kafka.common.InconsistentClusterIdException: The Cluster ID Gp_FULuuSTSKwBzkGtD1DQ doesn't match stored clusterId Some(Ra3BVZxZSiqW7JomU_PWQA) in meta.properties. The broker is trying to join the wrong cluster. Configured zookeeper.connect may be wrong.
解决方案
kafka配置日志路径，用来保存执行过程中的各种信息，当kafka异常关闭时，日志记录就会出现异常，会把当时的情况记录到meta.properties文件中，重新启动时此文件会对启动造成影响，kafka重启报错的原因就在这里。
a.直接删除日志：Kafka安装目录/logs。不要怕丢失,日志还会自动生成
b.删除meta-properties文件。对于windows：Kafka安装目录\bin\windows\devkafka_2.13-2.7.0kafka-logs
