WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED解決方法

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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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 a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
dc:a6:da:83:96:52:cc:f5:6a:6c:d0:fd:5f:c1:31:46.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:3
ECDSA host key for xx.xxx.xxx.xx has changed and you have requested strict checking.
Host key verification failed.

vim ~/.ssh/known_hosts 
刪除對應的IP的相關內容，儲存後退出