Hadoop2.x HA架構與部署

vim hdfs-site.xml

<configuration>
<property>
        <name>dfs.nameservices</name>
        <value>ns</value>
</property>
<property>
        <name>dfs.ha.namenodes.ns</name>
        <value>nn1,nn2</value>
</property>
<property>
        <name>dfs.namenode.rpc-address.ns.nn1</name>
        <value>bigdata-fy1:8020</value>
</property>
<property>
        <name>dfs.namenode.rpc-address.ns.nn2</name>
        <value>bigdata-fy2:8020</value>
</property>
<property>
        <name>dfs.namenode.http-address.ns.nn1</name>
        <value>bigdata-fy1:50070</value>
</property>
<property>
        <name>dfs.namenode.http-address.ns.nn2</name>
        <value>bigdata-fy2:50070</value>
</property>
<property>
        <name>dfs.namenode.shared.edits.dir</name>
        <value>qjournal://bigdata-fy1:8485;bigdata-fy2:8485;bigdata-fy3:8485/ns</value>
</property>
<property>
        <name>dfs.journalnode.edits.dir</name>
        <value>/moudle/hadoop/data/jn</value>
</property>
<property>
        <name>dfs.client.failover.proxy.provider.ns</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.ha.automatic-failover.enabled.ns</name>
	<value>true</value>
</property>
<property>
	<name>ha.zookeeper.quorum</name>
	<value>bigdata-fy1:2181,bigdata-fy2:2181,bigdata-fy3:2181</value>
</property>


<property>
        <name>dfs.replication</name>
        <value>2</value>
</property>
<property>
        <name>dfs.permissions.enabled</name>
        <value>false</value>
</property>
</configuration>

vim core-site.xml
 <property>
      <name>fs.defaultFS</name>
      <value>hdfs://ns</value>
  </property>


  <property>
      <name>hadoop.tmp.dir</name>
      <value>/moudle/hadoop/tmp</value>
  </property>

#手動激活active節點
sbin/start-dfs.sh
bin/hdfs haadmin -transitionToActive nn1

#創建文件夾
bin/hdfs dfs -mkdir -p /user/fy/data
#上傳圖片到文件夾
bin/hdfs dfs -put -p /moudle/pic.jpg /user/fy/data/
bin/hdfs dfs -text /user/fy/data/pic.jpg

#刪除文件夾
bin/hdfs dfs -rm -R /moudle

sbin/hadoop-daemon.sh start namenode
sbin/stop-dfs.sh
sbin/start-dfs.sh

#zookeeper自動切換激活點
sbin/stop-dfs.sh
./zkServer.sh start
bin/hdfs zkfc -formatZK
sbin/start-dfs.sh
sbin/hadoop-daemon.sh start zkfc
sbin/hadoop-daemon.sh stop zkfc

啓動完成

殺死bigdata-fy2 active節點後,active節點自動切換爲bigdata-fy1

vim yarn-site.xml
<configuration>

<!-- Site specific YARN configuration properties -->
        <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>rs</value>
        </property>
        <property>
                <name>yarn.resourcemanager.ha.rm-ids</name>
                <value>rm1,rm2</value>
        </property>
        <property>
                <name>yarn.resourcemanager.hostname.rm1</name>
                <value>bigdata-fy1</value>
        </property>
        <property>
                <name>yarn.resourcemanager.hostname.rm2</name>
                <value>bigdata-fy2</value>
        </property>
        <property>
                <name>yarn.resourcemanager.zk-address</name>
                <value>bigdata-fy1:2181,bigdata-fy2:2181,bigdata-fy3:2181</value>
        </property>

		<property>
                <name>yarn.resourcemanager.recovery.enabled</name>
                <value>true</value>
        </property>
        <property>
                <name>yarn.resourcemanager.store.class</name>
                <value>org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore</value>
        </property>

        <property>
                <name>yarn.log-aggregation-enable</name>
                <value>true</value>
        </property>

        <property>
                <name>yarn.log-aggregation.retain-seconds</name>
                <value>604800</value>
        </property>

</configuration>

sbin/start-dfs.sh
bin/zkServer.sh start
sbin/hadoop-daemon.sh start zkfc
sbin/yarn-daemon.sh start resourcemanager
sbin/yarn-daemon.sh start nodemanager

bin/yarn jar /moudle/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.5.0.jar wordcount /user/fy/data/word.txt /user/fy/data/output/1