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centos8启动zk集群失败:zk Error contacting service. It is probably not running.
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centos8启动zk集群失败:zk Error contacting service. It is probably not running.
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【README】在 192.168.163.201 機(jī)器上 啟動(dòng)zk ,并查看zk 這臺(tái); 即 集群只有2臺(tái)機(jī)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(bào)錯(cuò)現(xiàn)場(chǎng)?
在201上啟動(dòng)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(shí)到 202 這臺(tái)機(jī)器的 zk沒(méi)有啟動(dòng),?
啟動(dòng) 202, 如下:
經(jīng)過(guò)查看 status, 202 是leader?
第3步, 我們查看201 的zk 狀態(tài)(這里無(wú)需再次啟動(dòng),因?yàn)?01已經(jīng)啟動(dòng)了),201是個(gè) follower?
bingo
?
小結(jié):解決該問(wèn)題的方法是在 查看zk啟動(dòng)的日志文件, zookeeper.out 文件;?
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