hadoop-2.9.2 HA集群搭建

确保每台机器上都有jdk,以下是机器配置。

应用/主机名	zk1	zk2	zk3	namenode1	namenode2	datanode1	datanode2	datanode3
zookeeper	y	y	y
namenode				y	y
datanode						y	y	y
journalnode						y	y	y
zkFC				y	y
resourcemanger				y	y
nodemanager						y	y	y

1、3台zk,前面的博客已经搭建好了，我只是克隆几台，改了ip，不影响使用。

启动3台zk.

查看状态如果是上面的状态，那就ok.

2、准备两台namenode1,namenode2

　　我的hadoop位置

进入hadoop 配置文件目录，cd /hadoop-2.9.2/etc/hadoop

1).vi hdfs-site.xml

<property>
<name>dfs.nameservices</name>
<value>laolong</value>
</property>
<property>
<name>dfs.ha.namenodes.laolong</name>
<value>nn1,nn2</value>
</property>
<property>
<name>dfs.namenode.rpc-address.laolong.nn1</name>
<value>namenode1:8020</value> //两台namenode
</property>
<property>
<name>dfs.namenode.rpc-address.laolong.nn2</name>
<value>namenode2:8020</value>
</property>
<property>
<name>dfs.namenode.http-address.laolong.nn1</name>
<value>namenode1:50070</value>
</property>
<property>
<name>dfs.namenode.http-address.laolong.nn2</name>
<value>namenode2:50070</value>
</property>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://datanode1:8485;datanode2:8485;datanode3:8485/abc</value>
</property>

<property>
<name>dfs.client.failover.proxy.provider.laolong</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>
<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/root/.ssh/id_rsa</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/opt/journalnode</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>

2).vi core-site.xml

<property>
<name>fs.defaultFS</name>
<value>hdfs://laolong</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/hadoop-2.9</value>
</property>
<property>
<name>ha.zookeeper.quorum</name>
<value>zk1:2181,zk2:2181,zk3:2181</value>
</property>

3).vi slaves

4).vi yarn-site.xml

<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.ha.enabled</name>
<value>true</value>
</property>
<property>
<name>yarn.resourcemanager.cluster-id</name>
<value>lyhadoop</value>
</property>
<property>
<name>yarn.resourcemanager.ha.rm-ids</name>
<value>rm1,rm2</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.rm1</name>
<value>namenode1</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.rm2</name>
<value>namenode2</value>
</property>
<property>
<name>yarn.resourcemanager.zk-address</name>
<value>zk1:2181,zk2:2181,zk2:2181</value>
</property>