问题描述：
[atguigu@hadoop102 zookeeper-3.4.10]$ bin/zkServer.sh start ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Starting zookeeper ... STARTED [atguigu@hadoop102 zookeeper-3.4.10]$ bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Error contacting service. It is probably not running.
原因分析：
提示：之前zoo.cfg中配置文件为： server.101=hadoop@101:2888:3888 server.102=hadoop@102:2888:3888 server.103=hadoop@103:2888:3888
每台机器上的myid,设置为相应的id号，我这里设置的是101、102、103
解决方案：
重新将zoo.cfg配置文件修改如下： server.1=192.168.1.101:2888:3888 server.2=192.168.1.102:2888:3888 server.3=192.168.1.103:2888:3888
每台机器上的myid,设置为相应的id号，我这里设置的是1、2、3
如果出现Unexpected exception, exiting abnormally错误：删除dataDir路径的version -2文件夹。
重启机器！
重启机器！
重启机器！
##hadoop101机器 [atguigu@hadoop101 zookeeper-3.4.10]$ bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Mode: follower [atguigu@hadoop101 zookeeper-3.4.10]$ ##hadoop102机器 [atguigu@hadoop102 zookeeper-3.4.10]$ bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Mode: leader [atguigu@hadoop102 zookeeper-3.4.10]$ ##hadoop103机器 [atguigu@hadoop103 zookeeper-3.4.10]$ bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Mode: follower [atguigu@hadoop103 zookeeper-3.4.10]$
