SSH 远程连接： WARNING REMOTE HOST IDENTIFICATION HAS CHANGED

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[xiaowen@localhost ~]$ ssh [email protected]
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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
de:aa:91:52:09:3c:ed:32:4f:63:59:38:85:c9:ba:ec.
Please contact your system administrator.
Add correct host key in /home/xiaowen/.ssh/known_hosts to get rid of this message.
Offending key in /home/xiaowen/.ssh/known_hosts :1
RSA host key for 47.93.4.138 has changed and you have requested strict checking.
Host key verification failed.

执行：rm -rf /home/xiaowen/.ssh/known_hosts

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