Open up a terminal session, and type one of the following

We can also remove the old host key with ssh-keygen command. Fix host key verification failed with ssh-keygen command we can save the changes by pressing “esc” and typing “:wq!”. Once we open the known_hosts straight to line 222 do the following keyboard commands press “ESC dd” to delete the line.

In the example above, the offending RSA key is located here: /home/ec2-user.ssh/known_hosts:222 Locate our known_hosts file, and open in a general text editor. We can remove the old host key from known_hosts file and recreate a SSH connection. Remove old host key info from known_hosts file Understanding SSH known_hosts File with Examples If the match fails, ssh will fail with an error message Host key verification failed happens. If there is a match, the connection will proceed. With each subsequent connection the key will be compared to the key provided by the remote server. These are collected from the hosts when connecting for the first time.Īs with those keys stored in the file, ~/.ssh/known_hosts, these keys are used to verify the identity of the remote host, thus protecting against impersonation or man-in-the-middle attacks. This file is local to the user account and contains the known keys for remote hosts.

Why Host key verification failed happens? Offending RSA key in /home/ec2-user.ssh/known_hosts:222 RSA host key for has changed and you have requested strict checking.Host key verification failed. Please contact your system administrator.Īdd correct host key in /home/ec2-user/.ssh/known_hosts to get rid of this message. The fingerprint for the RSA key sent by the remote host is x. It is also possible that a host key has just been changed. Someone could be eavesdropping on you right now (man-in-the-middle attack)! IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

skip the host key checking with SSH option stricthostkeychecking.

Remove the old host key with ssh-keygen command.

Remove the old host key info from known_hosts file.

Gmod file list verification failed