Zookeeper伪分布式端口冲突解决方案

背景说明

zookeeper单机启动两个进程出现了端口冲突，报错信息如下

[root@ljhan2 bin]# cat zookeeper.out
Error: Exception thrown by the agent : java.rmi.server.ExportException: Port already in use: 9999; nested exception is:         java.net.BindException: Address already in use (Bind failed)
[root@ljhan2 bin]#

解决方案

查看启动脚本

 33 if [ "x$JMXDISABLE" = "x" ]
 34 then
 35     echo "JMX enabled by default" >&2
 36     # for some reason these two options are necessary on jdk6 on Ubuntu
 37     #   accord to the docs they are not necessary, but otw jconsole cannot
 38     #   do a local attach
 39     #ZOOMAIN="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=$JMXLOCALONLY org.apache.zook    eeper.server.quorum.QuorumPeerMain"
 40     ZOOMAIN="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9999 -Dcom.sun.management.jmxremote.    ssl=false  -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=$JMXLOCALONLY     org.apache.zookeeper.server.quorum.QuorumPeerMain"
 41 else
 42     echo "JMX disabled by user request" >&2
 43     ZOOMAIN="org.apache.zookeeper.server.quorum.QuorumPeerMain"
 44 fi

修改其中端口号9999为8888即可，再次启动发现问题解决。