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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
34:c1:73:e6:a0:d0:4f:0a:db:71:14:f6:05:07:c3:79.
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:7
RSA host key for 172.16.11.193 has changed and you have requested strict checking.
Host key verification failed.
lost connection
通过搜索引擎找到解决方案
修改家目录下SSH的RSA主机配置文件，删除192.168.11.193整行记录即可
vim ~/.ssh/known_hosts
REMOTE HOST IDENTIFICATION HAS CHANGED
原文：http://blog.51cto.com/liuhuiliang/2114869
