ssh remote host identification has changed

Question

I\'ve reinstalled my server and I am getting these messages:

[user@hostname ~]$ ssh root@pong
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@           


        

Answer 1

Simple one-liner solution, tested on mac:

sed '/212.156.48.110/d' ~/.ssh/known_hosts > ~/.ssh/known_hosts

Deletes only the target ssh host IP from know hosts.

where 212.156.48.110 is replaced by the target host IP address.

Cause: Happened because the target IP was already known for a different machine due to port forwarding. Deleting the target IP before connecting will fix the issue.