参照:https://blog.csdn.net/jshayzf/article/details/80186367
遇到的问题:
启动broker时报错 Broker may not be available
1、etc/hosts下添加内外网IP到机器hostname的映射
2、修改 kafka目录下config/server.properties
broker.id=0
port=9092
host.name=机器内网ip
listeners=PLAINTEXT://机器外网ip:9092
advertised.listeners=PLAINTEXT://机器外网ip:9092