hadoop2.4.0 [自动HA]搭建

hadoop2.4.0自动的HA

                   

注明：前提是自己已经编译好的hadoop版本或者cloudrea公司的cdh版本！          大数据讨论群：288396468

1、 core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://mycluster</value>
</property>


<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop-2.4.0/tmp</value>
</property>


<property>
<name>ha.zookeeper.quorum</name>
<value>itr-mastertest01:2181,itr-mastertest02:2181,itr-nodetest01:2181</value>
</property>


<property>
<name>fs.trash.interval</name>
<value>2000</value>
</property>
</configuration>


2、hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>


<property>
<name>dfs.nameservices</name>
<value>mycluster</value>
</property>


<property>
<name>dfs.ha.namenodes.mycluster</name>
<value>nn1,nn2</value>
</property>


<property>
<name>dfs.namenode.rpc-address.mycluster.nn1</name>
<value>itr-mastertest01:9000</value>
</property>


<property>
<name>dfs.namenode.http-address.mycluster.nn1</name>
<value>itr-mastertest01:50070</value>
</property>


<property>
<name>dfs.namenode.rpc-address.mycluster.nn2</name>
<value>itr-mastertest02:9000</value>
</property>


<property>
<name>dfs.namenode.http-address.mycluster.nn2</name>
<value>itr-mastertest02:50070</value>
</property>


<property>
<name>dfs.ha.automatic-failover.enabled.mycluster</name>
<value>true</value>
</property>


<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://itr-mastertest01:8485;itr-mastertest02:8485;itr-nodetest01:8485/mycluster</value>
</property>


<property>
<name>dfs.journalnode.edits.dir</name>
<value>/usr/local/hadoop-2.4.0/tmp/journal</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.client.failover.proxy.provider.mycluster</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
</configuration>


3、yarn-site.xml
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>itr-mastertest01</value>
</property>
<property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
</property>
</configuration>


4、mapred-site.xml
<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
</configuration>


5、slaves 
itr-nodetest01
itr-nodetest02


6、hadoop-env.sh修改
JAVA_HOME指定为jdk安装目录，JAVA_HOME=/usr/local/jdk1.7.0_45


7、scp hadoop-2.4.0
[root@itr-mastertest01 local]# scp -rq hadoop-2.4.0 itr-mastertest02:/usr/local/
[root@itr-mastertest01 local]# scp -rq hadoop-2.4.0 itr-nodetest01:/usr/local/
[root@itr-mastertest01 local]# scp -rq hadoop-2.4.0 itr-nodetest02:/usr/local/


8、启动journalnode
[root@itr-mastertest01 local]# hadoop-daemon.sh start journalnode
[root@itr-mastertest02 local]# hadoop-daemon.sh start journalnode
[root@itr-nodetest01 local]# hadoop-daemon.sh start journalnode


9、格式化zkfc集群
[root@itr-mastertest01 local]# hdfs zkfc -formatZK


10、格式化hdfs文件系统[格式化namenode,接着启动namenode]
[root@itr-mastertest01 tmp]# hdfs namenode -format -clusterId mycluster
[root@itr-mastertest01 tmp]# hadoop-daemon.sh start namenode
[root@itr-mastertest02 tmp]# hdfs namenode -bootstrapStandby
[root@itr-mastertest02 tmp]# hadoop-daemon.sh start namenode


9、启动datanode
[root@itr-mastertest01 local]# hadoop-daemons.sh start datanode


10、启动zkfc [DFSZKFailoverController]
[root@itr-mastertest01 local]# hadoop-daemon.sh start zkfc
[root@itr-mastertest02 tmp]# hadoop-daemon.sh start zkfc


11、启动yarn
[root@itr-mastertest01 local]# yarn-daemon.sh start resourcemanager
[root@itr-mastertest01 local]# yarn-daemons.sh start nodemanager


12、测试hdfs+Yarn+MR
hadoop fs -put /hadoop-env.sh /testdata
hadoop jar hadoop-mapreduce-examples-2.4.0.jar wordcount /testdata /output


13、启动historyserver [查询作业执行的详细情况]

[root@itr-mastertest01 local]# mr-jobhistory-daemon.sh start historyserver 

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