莫忘

[SSH 登入問題]

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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 6e:45:f9:a8:af:38:3d:a1:a5:c7:76:1d:02:f8:77:00.
Please contact your system administrator.
Add correct host key in /home/hostname /.ssh/known_hosts to get rid of this message.
Offending RSA key in /var/lib/sss/pubconf/known_hosts:4
RSA host key for pong has changed and you have requested strict checking.
Host key verification failed.

• 方法一：
  $ vi /root/.ssh/known_hosts 
  刪除問題的key 192.168.1.20
   
• 方法二：
  $ rm -rf  /root/.ssh/known_hosts 
  把整個 known_hosts 都刪除 或 cp 移至其他地方
   
• 方法三：
  $ ssh-keygen -R <host>
  例：$ ssh-keygen -R 192.168.1.20
  刪除 key 再重新建立