前些天發現了一個巨牛的人工智能學習網站，通俗易懂，風趣幽默，忍不住分享一下給大家。點擊跳轉到教程。

1. 問題描述：阿里云服務器 磁盤初始化之后用 git-bash? ssh root@xx.xx.xx.xx 方式登陸服務器，報錯如下。

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:V7h2Fdvk1Mc941+Bt6vJW8LpOGFDWVfFiQ3ezF/yzXo.
Please contact your system administrator.
Add correct host key in /c/Users/LYSM/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /c/Users/LYSM/.ssh/known_hosts:7
ECDSA host key for xxx.xx.xxx.xx has changed and you have requested strict checking.
Host key verification failed.

2. 解決：清除之前連接過的信息記錄。執行命令：

ssh-keygen -R  XX.XX.XX.XX?（這是服務器 IP）例如：ssh-keygen -R 172.168.2.59

3.重新 shh 登陸，一切正常。