Linux主机密钥验证失败的解决方法

linux环境下，在终端窗口中使用ssh root@192.168.2.104不能连接主机，出现下列提示：

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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 RSA key sent by the remote host is
SHA256:JNxdPZbkvb/Vbu9QbJIQJVee+kFr7grysLy+5ZdHSLA.
Please contact your system administrator.
Add correct host key in /home/martin-sd/.ssh/known_hosts to get rid of this message.
Offending RSA key in /home/martin-sd/.ssh/known_hosts:25
  remove with:
  ssh-keygen -f "/home/martin-sd/.ssh/known_hosts" -R "192.168.2.104"
RSA host key for 192.168.2.104 has changed and you have requested strict checking.
Host key verification failed.

原因：主机密钥验证失败。
解决方法： ssh-keygen -f “/home/martin-sd/.ssh/known_hosts” -R “192.168.2.104” 移除主机密钥即可

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