kafka版本

2.12-2.0.1

更改端口号

1、修改配置文件 config/server.properties

port=9093
listeners=PLAINTEXT://:9093
host.name=外网映射地址

# Hostname and port the broker will advertise to producers and consumers. If not set, 
# it uses the value for "listeners" if configured.  Otherwise, it will use the value
# returned from java.net.InetAddress.getCanonicalHostName().
#advertised.listeners=PLAINTEXT://your.host.name:9092

advertised.listeners=PLAINTEXT://外网映射地址:9093

zookeeper.connect=localhost:2182

2、修改配置文件 config/connect-distributed.properties

bootstrap.servers=localhost:9093

3、修改配置文件 config/connect-standalone.properties

bootstrap.servers=localhost:9093

4、修改配置文件：config/zookeeper.properties

clientPort=2182

启动服务，发现报错

[2021-03-04 17:27:38,158] INFO Got user-level KeeperException when processing sessionid:0x1000a46e31e0000 type:create cxid:0x16 zxid:0x2a6 txntype:-1 reqpath:n/a Error Path:/brokers/ids/0 Error:KeeperErrorCode = NodeExists for /brokers/ids/0 (org.apache.zookeeper.server.PrepRequestProcessor)
[2021-03-04 17:27:38,160] ERROR Error while creating ephemeral at /brokers/ids/0, node already exists and owner '72068832371015680' does not match current session '72068893612310528' (kafka.zk.KafkaZkClient$CheckedEphemeral)
[2021-03-04 17:27:38,160] INFO Result of znode creation at /brokers/ids/0 is: NODEEXISTS (kafka.zk.KafkaZkClient)
[2021-03-04 17:27:38,166] ERROR [KafkaServer id=0] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:122)
    at kafka.zk.KafkaZkClient.checkedEphemeralCreate(KafkaZkClient.scala:1525)
    at kafka.zk.KafkaZkClient.registerBrokerInZk(KafkaZkClient.scala:84)
    at kafka.server.KafkaServer.startup(KafkaServer.scala:257)
    at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
    at kafka.Kafka$.main(Kafka.scala:75)
    at kafka.Kafka.main(Kafka.scala)

未更改端口号时：

未更改端口号时，只做了一个外网映射

内网ip:9092----->外网ip:9092

只改了config/server.properties文件

listeners=PLAINTEXT://:9092
host.name=外网ip

# Hostname and port the broker will advertise to producers and consumers. If not set, 
# it uses the value for "listeners" if configured.  Otherwise, it will use the value
# returned from java.net.InetAddress.getCanonicalHostName().
#advertised.listeners=PLAINTEXT://your.host.name:9092
advertised.listeners=PLAINTEXT://外网ip:9092

求大佬帮助，感谢φ(>ω<*)