下面是错误提示

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 RSA key sent by the remote host is

SHA256:isp+9e0gKsdKoDA2DPhqOJoUBeqAFJa1B/PgnQKwY1s.

Please contact your system administrator.

Add correct host key in /var/root/.ssh/known_hosts to get rid of this message.

Offending RSA key in /var/root/.ssh/known_hosts:2

RSA host key for 39.104.28.1 has changed and you have requested strict checking.

Host key verification failed.

 

 

我这里导致这个错误的原因是, 这个服务器之前登陆成功过，但是重新安装系统之后，服务器名称变了， 链接该服务器的证书信息被MAC OS给记录在了本地。

 

 

解决方法：删除MAC OS本地记录信息文件，再次链接

rm -rf ~/.ssh/known_hosts