HA+Federation集群实现（七）

集群规划






配置步骤
1、core-site.xml
1）整合Federation和HA的配置

2、hdfs-site.xml
1）添加新增节点配置

3、启动服务
1）zookeeper
2）journalnode
3）datanode
4）namenode
5）zkfc

实施步骤

在原有的ha基础上进行配置，即基于《基于ZK自动切换模式的实现（六）》的基础之上进行配置

1）停止所有服务

[hadoop@master ~]$ hadoop-daemons.sh --hostnames 'master hadoop04' stop zkfc

[hadoop@master ~]$ hadoop-daemons.sh stop datanode

[hadoop@master ~]$ hadoop-daemons.sh --hostnames 'master hadoop04' stop namenode

[hadoop@master ~]$ hadoop-daemons.sh --hostnames 'slave1 slave2 hadoop04' stop journalnode

[hadoop@slave1 ~]$ zkServer.sh stop    《===注意标红处的主机

[hadoop@slave2 ~]$ zkServer.sh stop

[hadoop@hadoop04 ~]$ zkServer.sh stop

2）vi core-site.xml

<configuration xmlns:xi="http://www.w3.org/2001/XInclude">

 <xi:include href="cmt.xml"/>

 <property>

  <name>fs.defaultFS</name>

  <value>viewfs://nsX</value>

 </property>

 <property>

  <name>hadoop.tmp.dir</name>

  <value>/opt/hadoop/tmp</value>

 </property>

  <property>

  <name>dfs.journalnode.edits.dir</name>

  <value>/opt/hadoop/journalnode/data</value>

 </property>

 <property>

  <name>ha.zookeeper.quorum</name>

  <value>hadoop04:2181,slave1:2181,slave2:2181</value>

 </property>

</configuration>

3）vi hdfs-site.xml

<configuration>

  <property>

   <name>dfs.namenode.name.dir</name>

   <value>file:/opt/hadoop/dfs/name</value>

 </property>

 <property>

  <name>dfs.datanode.data.dir</name>

  <value>file:/opt/hadoop/dfs/data</value>

  </property>

 <property>

  <name>dfs.replication</name>

  <value>2</value>

 </property>

 <property>

  <name>dfs.webhdfs.enabled</name>

  <value>true</value>

 </property>

 

   <property>

  <name>dfs.nameservices</name>

  <value>ns1,ns2</value>

 </property>

  <property>

  <name>dfs.ha.namenodes.ns1</name>

  <value>nn1,nn2</value>

 </property>

 

  <property>

  <name>dfs.ha.namenodes.ns2</name>

  <value>nn3,nn4</value>

 </property>

 

 <property>

  <name>dfs.namenode.rpc-address.ns1.nn1</name>

  <value>master:9000</value>

 </property>

 

 <property>

  <name>dfs.namenode.rpc-address.ns2.nn3</name>

  <value>slave1:9000</value>

 </property>

 

 <property>

  <name>dfs.namenode.rpc-address.ns1.nn2</name>

  <value>hadoop04:9000</value>

 </property>

 

 <property>

  <name>dfs.namenode.rpc-address.ns2.nn4</name>

  <value>slave2:9000</value>

 </property>

 

 <property>

  <name>dfs.namenode.http-address.ns1.nn1</name>

  <value>master:50070</value>

 </property>

 

 <property>

  <name>dfs.namenode.http-address.ns1.nn2</name>

  <value>hadoop04:50070</value>

 </property>

 

 <property>

  <name>dfs.namenode.http-address.ns2.nn3</name>

  <value>slave1:50070</value>

 </property>

 

 <property>

  <name>dfs.namenode.http-address.ns2.nn4</name>

  <value>slave2:50070</value>

 </property>

 

 <property>

  <name>dfs.namenode.shared.edits.dir</name>

  <value>qjournal://hadoop04:8485;slave1:8485;slave2:8485/ns1</value>  《==在slave1和slave2上修改为  ns2

 </property>

 

 <property>

  <name>dfs.client.failover.proxy.provider.ns1</name>

  <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>

 </property>

 <property>

  <name>dfs.client.failover.proxy.provider.ns2</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>/home/hadoop/.ssh/id_rsa</value>

 </property>

 

 <property>

  <name>dfs.ha.fencing.ssh.connect-timeout</name>

  <value>30000</value>

 </property>

 

 <property>

  <name>dfs.ha.automatic-failover.enabled</name>

  <value>true</value>

 </property>

</configuration>

4）同步配置

[hadoop@slave2 ~]$ cd /opt/hadoop/etc/hadoop

[hadoop@slave2 ~]$  scp –r *.xml slave1:/opt/hadoop/etc/hadoop

[hadoop@slave2 ~]$  scp –r *.xml slave2:/opt/hadoop/etc/hadoop

[hadoop@slave2 ~]$  scp -r *.xml hadoop04:/opt/hadoop/etc/hadoop

5）修改slave1、slave2的hdfs-site.xml

 <property>
  <name>dfs.namenode.shared.edits.dir</name>
  <value>qjournal://hadoop04:8485;slave1:8485;slave2:8485/ns1</value>  《==在slave1和slave2上修改为
 ns2
 </property>

6）启动zookeeper集群
[hadoop@slave1 hadoop]$ zkServer.sh start

[hadoop@slave2 hadoop]$ zkServer.sh start

[hadoop@hadoop04  hadoop]$ zkServer.sh start

7）zkfc重新格式化
ON MASTER   《===理论上可以不做，只做slave1上的格式化
[hadoop@master hadoop]$ hdfs zkfc –formatZK

On slave1
[hadoop@slave1 ~]$ hdfs zkfc –formatZK

8）启动journalnode服务
[hadoop@master hadoop]$  hadoop-daemons.sh --hostnames 'slave1 slave2 hadoop04' start journalnode

9）在slave1上执行journalnode的初始化
[hadoop@slave1 ~]$  hdfs namenode –initializeSharedEdits

在以前的ha配置过程中master节点也执行过这个操作

10）格式化slave1
[hadoop@slave1 ~]$ hdfs namenode -format -clusterid hd260

11）启动master的namenode服务
[hadoop@master hadoop]$ hadoop-daemon.sh start namenode

12）hadoop04节点namenode信息同步
[hadoop@hadoop04 hadoop]$ hdfs namenode –bootstrapStandby

13）hadoop04节点 namenode服务启动
[hadoop@hadoop04 hadoop]$ hadoop-daemon.sh start namenode

14） slave1节点namenode服务启动 

[hadoop@slave1 ~]$ hadoop-daemon.sh start namenode

15）在slave2上进行namenode信息同步  《==在这里同步跟格式化是一个效果

[hadoop@slave2 hadoop]$  hdfs namenode –bootstrapStandby

16）在slave2上启动namenode
[hadoop@slave2 hadoop]$ hadoop-daemon.sh start namenode

17）启动datanode
[hadoop@master hadoop]$ hadoop-daemons.sh start datanode

18）

[hadoop@master hadoop]$ hadoop-daemons.sh --hostnames 'master slave1 slave2 hadoop04' start zkfc

19）


















状态正确，配置成功