WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

错误信息

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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:zy3OJxxxx
Please contact your system administrator.
Add correct host key in /Users/ui/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/ui/.ssh/known_hosts:1
Password authentication is disabled to avoid man-in-the-middle attacks.
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
UpdateHostkeys is disabled because the host key is not trusted.
root@192.168.125.45: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
scp: Connection closed
Pseudo-terminal will not be allocated because stdin is not a terminal.
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@    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:zy3OJxxxx
Please contact your system administrator.
Add correct host key in /Users/ui/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/ui/.ssh/known_hosts:1
Password authentication is disabled to avoid man-in-the-middle attacks.
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
UpdateHostkeys is disabled because the host key is not trusted.

错误原因

这是一个SSH安全检查错误。当第一次连接到一台新的SSH服务器时，服务器的公钥会被存储在本地计算机的 ~/.ssh/known_hosts 文件中。每次你再连接到该服务器时，SSH会检查服务器的公钥是否与存储的匹配。如果公钥发生变化，就会出现这个错误，提示可能存在安全问题（例如中间人攻击)

导致出现这个情况是因为,我之前连接过这台服务器,但是这次使用其它方式登录,不使用到原本已经存储在本地的密钥,导致检查出现问题

解决方案

在scp 和 ssh 命令中使用 -o StrictHostKeyChecking=no ，禁用主机密钥检查并自动接受新的主机密钥。
请注意，这样做会降低连接的安全性，因此最好在安全的环境下使用。

# 使用 -o StrictHostKeyChecking=no 禁用检查
ssh -o StrictHostKeyChecking=no 

# 使用 -T -o UserKnownHostsFile=/dev/null和-o StrictHostKeyChecking=no 禁用检查并避免相关警告
ssh -T -o UserKnownHostsFile=/dev/null  -o StrictHostKeyChecking=no