Connection to 192.168.10.20 closed. [root@localhost ~]# ssh 192.168.10.88 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @     WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!      @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is b6:0c:41:43:60:79:eb:05:9e:c9:72:1d:a0:41:9a:50. Please contact your system administrator. Add correct host key in /root/.ssh/known_hosts to get rid of this message. Offending key in /root/.ssh/known_hosts:5 RSA host key for 192.168.10.88 has changed and you have requested strict checking. Host key verification failed.

1.在客户端执行下述指令即可 #mv /root/.ssh/known_hosts  /tmp

2.当然也可以直接编辑known_hosts文件,把里面与所要连接IP(192.168.10.20)相关的内容删掉即可.