在配置安装好zookeeper之后执行zkServer.sh start发现提示:/data/zookeeper/zookeeper_server.pid: Permission denied FAILED TO WRITE PID
原因是刚才/data/zookeeper是root权限，而不是doop权限的，修改/data权限即可解决
[root@master ~]# chown -R doop:hadoop /usr/doop/zookeeper-3.4.6/data，再执行zkServer.sh start就正确了
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zookeeper启动提示:/data/zookeeper/zookeeper_server.pid: Permission denied
原文：http://chy0919.iteye.com/blog/2249126