Remote Host Identification Has Changed

[abranca]

hello everyone, i have a cluster with 3 nodes (kve-kve2-kve3) and today i noticed, during a migration, that kve2 cannot migrate to kve.

2022-02-28 16:06:14 # /usr/bin/ssh -e none -o 'BatchMode=yes' -o 'HostKeyAlias=kve' root@192.168.1.6 /bin/true
2022-02-28 16:06:14 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
2022-02-28 16:06:14 @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
2022-02-28 16:06:14 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
2022-02-28 16:06:14 IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
2022-02-28 16:06:14 Someone could be eavesdropping on you right now (man-in-the-middle attack)!
2022-02-28 16:06:14 It is also possible that a host key has just been changed.
2022-02-28 16:06:14 The fingerprint for the RSA key sent by the remote host is
2022-02-28 16:06:14 SHA256:nna6ovzrJjz3cMiQcvnXT2vpc/eERN4HGhdFHxOGG5c.
2022-02-28 16:06:14 Please contact your system administrator.
2022-02-28 16:06:14 Add correct host key in /root/.ssh/known_hosts to get rid of this message.
2022-02-28 16:06:14 Offending RSA key in /etc/ssh/ssh_known_hosts:1
2022-02-28 16:06:14   remove with:
2022-02-28 16:06:14   ssh-keygen -f "/etc/ssh/ssh_known_hosts" -R "kve"
2022-02-28 16:06:14 RSA host key for kve has changed and you have requested strict checking.
2022-02-28 16:06:14 Host key verification failed.
2022-02-28 16:06:14 ERROR: migration aborted (duration 00:00:00): Can't connect to destination address using public key
TASK ERROR: migration aborted

following the posts present i have already tried to update the certificates with

pvecm updatecerts -f

but i always get the same warning.

i also tried to remove the key as indicated in the error but nothing to do.
i can connect kve2 to kve via ssh with ip address, but not with name.

have any other suggestions?