java.net.UnknownHostException: node03: node03: 未知的名称或服务
at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
at org.apache.hadoop.security.SecurityUtil.getLocalHostName(SecurityUtil.java:219)
at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:239)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2467)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2516)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2698)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2722)
Caused by: java.net.UnknownHostException: node03: 未知的名称或服务
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
… 6 more
2019-11-07 17:08:33,536 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2019-11-07 17:08:33,537 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
这个要查看你的 cat /etc/hosts 里面 你的IP和你的主机名是否是对应的关系
如果对应关系不对 vim /etc/hosts 进行编辑修改
