Mac和Linux远程连接服务器异常修复（WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!）

1、今天在使用SSH，连接远程服务器的时候，刚开始是没问题的。后来阿里云主机重装了一下系统后，再也连不上了,一直报错。

ssh root@139.196.114.57
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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
SHA256:8hgJ8jpcBr1tm6HS72FpXwMrjba8MQqlqYJQLPB/Qf4.
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:26
ECDSA host key for 139.196.114.57 has changed and you have requested strict checking.
Host key verification failed.

2、解决方法，看错误日志中有一句

vim /Users/shilei/.ssh/known_hosts		

更换自己的用户名

3、将之前连接的阿里云IP删除掉