I had a situation when I tried to SSH into one of the server, I received the error message below. Basically the server had generated a new SSH RSA host key that doesnt match with the old one stored on my MacBook Pro.
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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 the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is 21:79:38:2d:2c:3d:f0:08:5d:e5:a6:a0:3f:af:a1:0a. Please contact your system administrator. Add correct host key in /Users/root/.ssh/known_hosts to get rid of this message. Offending key in /Users/root/.ssh/known_hosts:7 RSA host key for x.x.x.x has changed and you have requested strict checking. Host key verification failed.
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