一、发现问题
问题如下图代码：
$ ssh root@108.61.163.242@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 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 a host key has just been changed.The fingerprint for the ECDSA key sent by the remote host isSHA256:HDjXJvu0VYXWF+SKMZjSGn4FQmg/+w6eV9ljJvIXpx0.Please contact your system administrator.Add correct host key in /Users/wangdong/.ssh/known_hosts to get rid of this message.Offending ECDSA key in /Users/wangdong/.ssh/known_hosts:46ECDSA host key for 108.61.163.242 has changed and you have requested strict checking.Host key verification failed.
一般这个问题，是你重置过你的服务器后。你再次想访问会出现这个问题。
二、解决问题
解决问题也很简单：
ssh-keygen -R 你要访问的IP地址
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