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

    执行hdfs namenode -bootstrapStandby的时候报错如下

    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
    

    错误信息里面说找不到NN id,这里我的nn是克隆出来的,所以查看hosts文件,是因为没有添加该节点的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
    

    应该使得每台主机的hosts文件都具有其他节点的IP映射



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  • 原文地址:https://www.cnblogs.com/flyingcr/p/10326909.html
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