如何解决“Offending key in ~/.ssh/known_hosts” file
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如何解决“Offending key in ~/.ssh/known_hosts” file
Remove the offending ssh key
Following error will be displayed when the remote host key changes (after you’ve connected earlier with a valid remote host key).
- @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
- @ 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 the RSA host key has just been changed.
- The fingerprint for the RSA key sent by the remote host is
- a7:a8:f2:97:94:33:58:b7:9d:bc:e0:a6:6b:f7:0a:29.
- Please contact your system administrator.
- Add correct host key in /home/ramesh/.ssh/known_hosts to get rid of this message.
- Offending key in /home/ramesh/.ssh/known_hosts: 6
- Permission denied (publickey,password).
You have to remove the key to proceed further. Use the following command to remove the offending key.
- # sed -i '6d' ~/.ssh/known_hosts
Note: Change the 6d according to the line number shown.
If your sed does not have -i option, use perl or use some editor to remove the offending key.
Perl solution:
- # perl -pi -e 's/\Q$_// if ($. == 6);' ~/.ssh/known_hosts
Note: Change the line number from 6 to appropriate line number.
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