~$ ssh -i ~/.ssh/hetznerkey root@88.198.90.121
Warning: Permanently added '88.198.90.121' (ECDSA) to the list 
of known hosts.
root@88.198.90.121: Permission denied (publickey,gssapi-keyex,
                                       gssapi-with-mic).
 
~$ ssh -i myuserkey myuser@88.198.90.121
[myuser@myserver ~]$
