配置hadoop HA 初始化時報錯 Configuration has multiple addresses that match local node's address.

出錯詳情

************************************************************/
20/03/11 10:49:09 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
20/03/11 10:49:09 INFO namenode.NameNode: createNameNode [-format]
20/03/11 10:49:09 ERROR namenode.NameNode: Failed to start namenode.
org.apache.hadoop.HadoopIllegalArgumentException: Configuration has multiple addresses that match local node's address. Please configure the system with dfs.nameservice.id and dfs.ha.namenode.id
        at org.apache.hadoop.hdfs.DFSUtil.getSuffixIDs(DFSUtil.java:1453)
        at org.apache.hadoop.hdfs.HAUtil.getNameNodeId(HAUtil.java:113)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1012)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1488)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1615)
20/03/11 10:49:09 INFO util.ExitUtil: Exiting with status 1
20/03/11 10:49:09 INFO namenode.NameNode: SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop01/192.168.100.100
************************************************************/

解決問題

一開始沒有找到問題的所在,通過百度,百度上說是因爲 3個節點hosts的問題,後來發現hosts並沒有問題.最後通過谷歌去國外的網站找到了,是因爲 hdfs-site.xml 配置出錯了

出現問題的地方

出錯的地方爲
dfs.namenode.rpc-address.cluster1.nn2 和 dfs.namenode.http-address.cluster1.nn2 的 value 配置爲 nn1 的地址去了,導致地址重複了,因此初始化時就報錯了

正確的配置文件如下:

<configuration>
	<!--指定hdfs的nameservice爲cluster1，需要和core-site.xml中的保持一致 -->
	<property>
		<name>dfs.nameservices</name>
		<value>cluster1</value>
	</property>
	<!-- cluster1下面有兩個NameNode，分別是nn1，nn2 -->
	<property>
		<name>dfs.ha.namenodes.cluster1</name>
		<value>nn1,nn2</value>
	</property>
	<!-- nn1的RPC通信地址 -->
	<property>
		<name>dfs.namenode.rpc-address.cluster1.nn1</name>
		<value>hadoop01:8020</value>
	</property>
	<!-- nn1的http通信地址 -->
	<property>
		<name>dfs.namenode.http-address.cluster1.nn1</name>
		<value>hadoop01:50070</value>
	</property>
	<!-- nn2的RPC通信地址 -->
	<property>
		<name>dfs.namenode.rpc-address.cluster1.nn2</name>
		<value>hadoop02:8020</value>
	</property>
	<!-- nn2的http通信地址 -->
	<property>
		<name>dfs.namenode.http-address.cluster1.nn2</name>
		<value>hadoop02:50070</value>
	</property>
	<!-- 指定NameNode的edits元數據在JournalNode上的存放位置 -->
	<property>
		<name>dfs.namenode.shared.edits.dir</name>
		<value>qjournal://hadoop01:8485;hadoop02:8485;hadoop03:8485/cluster1</value>
	</property>
	<!-- 指定JournalNode在本地磁盤存放數據的位置 -->
	<property>
		<name>dfs.journalnode.edits.dir</name>
		<value>/export/install/hadoop-2.6.0-cdh5.14.0/journaldata</value>
	</property>
	<!-- 開啓NameNode失敗自動切換 -->
	<property>
		<name>dfs.ha.automatic-failover.enabled</name>
		<value>true</value>
	</property>
	<!-- 指定該集羣出故障時，哪個實現類負責執行故障切換 -->
	<property>
		<name>dfs.client.failover.proxy.provider.cluster1</name>
		<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
	</property>
	<!-- 配置隔離機制方法，多個機制用換行分割，即每個機制暫用一行-->
	<property>
		<name>dfs.ha.fencing.methods</name>
		<value>sshfence</value>
	</property>
	<!-- 使用sshfence隔離機制時需要ssh免登陸 -->
	<property>
		<name>dfs.ha.fencing.ssh.private-key-files</name>
		<value>/root/.ssh/id_rsa</value>
	</property>
	<!-- 配置sshfence隔離機制超時時間 -->
	<property>
		<name>dfs.ha.fencing.ssh.connect-timeout</name>
		<value>30000</value>
	</property>
</configuration>