ZooKeeper故障节点替换过程详解

DBAplus社群 · 公众号 · 数据库 · 2017-05-25 07:19

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6、10.10.10.37节点创建myid 命令：echo “5” > /data/ZooKeeper/myid

五、修改Hadoop配置文件，然后替换所有Hadoop节点配置文件

1、修改hdfs-site.xml

$ grep -A 2 "ha.ZooKeeper.quorum" hdfs-site.xml

ha.ZooKeeper.quorum host-10-10-10-49:2181,host-10-10-10-50:2181,host-10-10-10-36:2181,host-10-10-10-38:2181, host-10-10-10-30:2181

$ vi hdfs-site.xml把 host-10-10-10-30 替换为host-10-10-10-37

2、修改yarn-site.xml

$ grep -A 2 "yarn.resourcemanager.zk-address" yarn-site.xml

yarn.resourcemanager.zk-address host-10-10-10-49:2181,host-10-10-10-50:2181,host-10-10-10-36:2181,host-10-10-10-38:2181, host-10-10-10-30:2181

For multiple zk services, separate them with comma

$ vi yarn-site.xml把 host-10-10-10-30 替换为host-10-10-10-37

六、修改HBase配置文件（HBase-site.xml）,然后替换所有HBase节点配置

$ grep -A 2 "HBase.ZooKeeper.quorum" HBase-site.xml

HBase.ZooKeeper.quorum host-10-10-10-49,host-10-10-10-50,host-10-10-10-36,host-10-10-10-38,host-10-10-10-30

$ vi HBase-site.xml 把host-10-10-10-30 替换为host-10-10-10-37

七、重启相关服务

部署ZooKeeper节点比较简单，当初部署集群的时候怎么部署的，现在就重新部署一个节点就可以，注意修改zoo.cfg配置文件。其它依赖于ZooKeeper集群的相关服务比如Hadoop、HBase、Hive、flume等都需要修改配置文件，小技巧，记住修改的是xxx-site.xml文件关键字是site.xml文件。

接下来需要重启服务，启动顺序为ZooKeeper--->Hadoop--->HBase,关闭顺序为HBase--->Hadoop--->ZooKeepe。

具体命令如下：

1、重启zookeepe命令：./zkServer.sh restart

2、关闭HBase集群命令：./stop-HBase.sh

3、关闭Hadoop集群命令：

./stop-yarn.sh && ./stop-dfs.sh

./yarn-daemon.sh stop resourcemanager

4、启动Hadoop集群命令：

./start-yarn.sh && ./start-dfs.sh

./yarn-daemon.sh start resourcemanager

5、启动HBase集群命令：./start-HBase.sh

6、通过命令验证配置是否同步