192.168.1.151: Address 192.168.1.151 maps to node1, but this does not map back to the address - POSSIBLE BREAK-IN
使用root用户启动hadoop的时候报错:
[root@node1 ~]# su - hadoop -c start-all.sh
starting namenode, logging to /app/hadoop/bin/../logs/hadoop-hadoop-namenode-node1.out
192.168.1.153: starting datanode, logging