【README】在 192.168.163.201 機器上 啟動zk ，并查看zk 這臺； 即 集群只有2臺機器， 201 202

--ZOO.cfg# The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=/opt/module/zookeeper-3.4.10/zkdata # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1 # cluster conf server.1=192.168.163.201:2888:3888 server.2=192.168.163.202:2888:3888

【1】報錯現場?

在201上啟動zk，如下：?

[root@localhost 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 [root@localhost zookeeper-3.4.10]# [root@localhost zookeeper-3.4.10]# [root@localhost 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.

【2】解決方法

第一步： 查看 zookeeper.out 輸出日志，如下：

Cannot open channel to 2 at election address /192.168.163.202:3888

?

第2步： 很明顯，意識到 202 這臺機器的 zk沒有啟動，?

啟動 202， 如下：

經過查看 status， 202 是leader?

第3步， 我們查看201 的zk 狀態（這里無需再次啟動，因為201已經啟動了），201是個 follower?

bingo

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小結：解決該問題的方法是在 查看zk啟動的日志文件， zookeeper.out 文件；?

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總結

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