【已解决】Mac ssh时报错WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED

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在尝试使用Mac通过SSH连接到192.168.1.112时遇到了主机身份验证警告。警告提示远程主机的公钥已改变，可能涉及中间人攻击。解决方案是删除或更新~/.ssh/known_hosts文件中关于该IP的条目，然后重新进行SSH连接。完成这些步骤后，成功登录到了运行Ubuntu 18.04.3 LTS的远程服务器。

Mac使用ssh连接远程时出现报错：

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:Z0O3MWVzRTmyZtixzbm8sUHAHsygdftbPrWZcme8ZGo.
Please contact your system administrator.
Add correct host key in /Users/cedric/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/cedric/.ssh/known_hosts:4
Host key for 192.168.1.112 has changed and you have requested strict checking.
Host key verification failed.

解决方案：

找到.ssh文件夹，一般默认地址在Users/cedric/中(cedric替换为本机用户名)
删除本机 .ssh/known_hosts文件中关于192.168.1.112（你需要连接的IP地址）公钥信息
或者直接删除.ssh/known_hosts文件
重新ssh，成功连接

The authenticity of host '192.168.1.112 (192.168.1.112)' can't be established.
ED25519 key fingerprint is SHA256:bkLYG6xrnor0PIEYpdYd+gi4AbHiBSMFj1OoWUzVNGk.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes

Warning: Permanently added '192.168.1.112' (ED25519) to the list of known hosts.
nvidia@192.168.1.112's password:

Welcome to Ubuntu 18.04.3 LTS (GNU/Linux 4.9.140-tegra aarch64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

 * Super-optimized for small spaces - read how we shrank the memory
   footprint of MicroK8s to make it the smallest full K8s around.

   https://ubuntu.com/blog/microk8s-memory-optimisation
This system has been minimized by removing packages and content that are
not required on a system that users do not log into.

To restore this content, you can run the 'unminimize' command.

646 packages can be updated.
370 updates are security updates.

New release '20.04.4 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Wed Apr  6 09:54:56 2022 from 192.168.1.204