基于之前的单broker
1:复制一个server.properties=>server1.properties
cp server.properties server1.properties
2:修改 server1.properties
broker.id=1
port=9093
log.dirs =/XXX/kafka/logs/broker1
zookeeper.connect=host:2181,host2;2181
3：启动之前的kafka
kafka-server-start.sh ../config/server.properties &
4：启动新加的kafka
kafka-server-start.sh ../config/server1.properties &
5:新建topic，停止kafka 和单机单点一样
