3.4.10/zkData/myid
[root@hadoop101 ~]#exit
[root@hadoop100 zkData]# ssh hadoop101
Last login: Thu Sep 19 14:10:35 2019 from gateway
[root@hadoop101 ~]# echo 101 > /opt/modules/zookeeper-3.4.10/zkData/myid
[root@hadoop101 ~]# exit
logout
Connection to hadoop101 closed.
[root@hadoop100 zkData]# ssh hadoop102
Last login: Tue Sep 17 13:26:48 2019 from hadoop100
[root@hadoop102 ~]# echo 102 > /opt/modules/zookeeper-3.4.10/zkData/myid
[root@hadoop102 ~]# exit
logout
Connection to hadoop102 closed.
[root@hadoop100 zkData]# ssh hadoop103
Last login: Tue Sep 17 13:17:00 2019 from hadoop100
[root@hadoop103 ~]# echo 103 > /opt/modules/zookeeper-3.4.10/zkData/myid
[root@hadoop103 ~]# exit
logout
Connection to hadoop103 closed.
[root@hadoop100 zkData]# ssh hadoop104
Last login: Tue Sep 17 11:04:38 2019 from hadoop100
[root@hadoop104 ~]# echo 104 > /opt/modules/zookeeper-3.4.10/zkData/myid
[root@hadoop104 ~]# exit
logout
Connection to hadoop104 closed.
检查一下确保没问题
[root@hadoop100 bin]# xcall cat /opt/modules/zookeeper-3.4.10/zkData/myid
---------running at localhost--------
100
---------running at hadoop101-------
101
---------running at hadoop102-------
102
---------running at hadoop103-------
103
---------running at hadoop104-------
104
[root@hadoop100 bin]#
好了，基本配置好了，准备启动了，ZooKeeper集群都要启动ZooKeeper服务。我用之前介绍过的超级脚本xcall
[root@hadoop100 zkData]# xcall /opt/modules/zookeeper-3.4.10/bin/zkServer.sh start
---------running at localhost--------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
---------running at hadoop101-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
---------running at hadoop102-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
---------running at hadoop103-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
---------running at hadoop104-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@hadoop100 zkData]#
错误排查：Error contacting service. It is probably not running.
查看一下运行状态, 啊哦，怎么没启动呢？
[root@hadoop100 bin]# xcall /opt/modules/zookeeper-3.4.10/bin/zkServer.sh status
---------running at localhost--------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.
---------running at hadoop101-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.
---------running at hadoop102-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.
---------running at hadoop103-------
ZooKeeper JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.10/bin/../conf/zoo.cfg
Error contacting service. It is probably not runni