解决Host key verification failed.(亲测有效)

一、发现问题

问题如下图代码：

$ 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 a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256: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:46
ECDSA host key for 108.61.163.242 has changed and you have requested strict checking.
Host key verification failed.

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这里面，有一句很关键。

ECDSA host key for 108.61.163.242 has changed and you have requested strict checking.
Host key verification failed.

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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

ssh [email protected]

输入密码，然后，用户和密码自动保存在/root/.ssh/knowhost

就可以了