Could not determine own NN ID in namespace 'mycluster'.

執行hdfs namenode -bootstrapStandby的時候報錯以下java

java.io.IOException: java.lang.IllegalStateException: Could not determine own NN ID in namespace 'mycluster'. Please ensure that this node is one of the machines listed as an NN RPC address, or configure dfs.ha.namenode.id
        at org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby.run(BootstrapStandby.java:428)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1482)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1582)
Caused by: java.lang.IllegalStateException: Could not determine own NN ID in namespace 'mycluster'. Please ensure that this node is one of the machines listed as an NN RPC address, or configure dfs.ha.namenode.id
        at com.google.common.base.Preconditions.checkState(Preconditions.java:172)
        at org.apache.hadoop.hdfs.HAUtil.getNameNodeIdOfOtherNode(HAUtil.java:164)
        at org.apache.hadoop.hdfs.HAUtil.getConfForOtherNode(HAUtil.java:187)
        at org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby.parseConfAndFindOtherNN(BootstrapStandby.java:391)
        at org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby.run(BootstrapStandby.java:104)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
        at org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby.run(BootstrapStandby.java:423)
        ... 2 more

錯誤信息裏面說找不到NN id，這裏個人nn是克隆出來的，因此查看hosts文件，是由於沒有添加該節點的IP映射

[xiaoqiu@s150 /etc]$ xcall.sh "cat /etc/hosts"
====s150 =====
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.109.150 s150
192.168.109.151 s151
192.168.109.152 s152
192.168.109.153 s153

====s151 =====
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.109.150 s150
192.168.109.151 s151
192.168.109.152 s152
192.168.109.153 s153

====s152 =====
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.109.150 s150
192.168.109.151 s151
192.168.109.152 s152
192.168.109.153 s153

====s153 =====
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.109.150 s150
192.168.109.151 s151
192.168.109.152 s152
192.168.109.153 s153

應該使得每臺主機的hosts文件都具備其餘節點的IP映射node