1.首先，在zookeeper搭建成功，服务运行的基础上搭建yarn,其次，保证时间一致
2.在 /home/install/hadoop-2.5/etc/hadoop目录下配置一下几个配置文件：
第一个：yarn-site.xml
<configuration>
<property>
<name>yarn.resourcemanager.ha.enabled</name>
<value>true</value>
</property>
<property>
<name>yarn.resourcemanager.cluster-id</name>
<value>cluster1</value>
</property>
<property>
<name>yarn.resourcemanager.ha.rm-ids</name>
<value>rm1,rm2</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.rm1</name>
<value>node1</value>
</property>
<property>
<name>yarn.resourcemanager.hostname.rm2</name>
<value>node4</value>
</property>
<property>
<name>yarn.resourcemanager.zk-address</name>
<value>node1:2181,node2:2181,node3:2181</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
mv mapred-site.xml.template mapred-site.xml
第二个：mapred-site.xml
将配置好的文件复制到其它虚拟机上(node2、node3、node4)
scp mapred-site.xml yarn-site.xml root@node2:/home/install/hadoop-2.5/etc/hadoop/
3.接着，启动yarn:start-yarn.sh
4.在node4的hadoop-2.5里创建test目录：hdfs dfs -mkdir /test,然后启动resouremanager:yarn-daemon.sh start resouremanager
5.查看进程，看是否有resouremanager
6.在浏览器里分别输入http:node1:8088 和node4:8080,查看结果
