WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED

在终端连接另一台电脑，使用ssh时出错
ssh [email protected]
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@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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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:LvJ6M6Vm/uy62H0EujNTeX/+K3y+2Ngz+021uC1M29M.
Please contact your system administrator.
Add correct host key in /home/tts/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/tts/.ssh/known_hosts:1
remove with:
ssh-keygen -f “/home/tts/.ssh/known_hosts” -R 192.168.2.94
ECDSA host key for 192.168.2.94 has changed and you have requested strict checking.
Host key verification failed.
原因：是由于之前连接过，但由于对方电脑重装了系统，用户名和IP都没变，但秘钥会变化，而本机记录了之前的秘钥放在.ssh/known_hosts中，故造成这样的错误。只需要在终端输入上面的命令，把.ssh/known_hosts删掉。再重新连接就可以了。
tts@ubuntu:~$ ssh-keygen -f “/home/tts/.ssh/known_hosts” -R 192.168.2.94
#Host 192.168.2.94 found: line 1
/home/tts/.ssh/known_hosts updated.
Original contents retained as /home/tts/.ssh/known_hosts.old
tts@ubuntu:~$ ssh [email protected]
The authenticity of host ‘192.168.2.94 (192.168.2.94)’ can’t be established.
ECDSA key fingerprint is SHA256:LvJ6M6Vm/uy62H0EujNTeX/+K3y+2Ngz+021uC1M29M.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘192.168.2.94’ (ECDSA) to the list of known hosts.
[email protected]’s password:
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