Host key verification failed

[Nass]

Hello,
i got this while trying to access shell of my proxmox host using web interface !

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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 a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
SHA256:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending RSA key in /etc/ssh/ssh_known_hosts:2
remove with:
ssh-keygen -f "/etc/ssh/ssh_known_hosts" -R "X.X.X.X"
RSA host key for X.X.X.X has changed and you have requested strict checking.
Host key verification failed.

 

[RolandK]

did you already use ssh-keygen -f ?

there is this issue:
https://bugzilla.proxmox.com/show_bug.cgi?id=4252

not sure, if it's related

 

[esi_y]

Linking through related: https://forum.proxmox.com/threads/s...ass-ssh-known_hosts-bug-s.137809/#post-615906

 

[ValmarQuintanilha]

Just run this command on each node in the cluster.
Note: one line for each host, run on all nodes.
/usr/bin/ssh -e none -o 'HostKeyAlias=pve01' root@172.16.2.31 /bin/true
HostKeyAlias=YOURSERVER
root@IPYOURSERVER

 

[esi_y]

Just run this command on each node in the cluster.
Note: one line for each host, run on all nodes.
/usr/bin/ssh -e none -o 'HostKeyAlias=pve01' root@172.16.2.31 /bin/true
HostKeyAlias=YOURSERVER
root@IPYOURSERVER

This piece of advice will run into the same bug sooner or later again. It is temporary. It is also producing different results depending in which order it is run (in respect to the said nodes) - as weird as it sounds - which is by the nature of the bug.

 

[Galenbo]

Just run this command on each node in the cluster.
Note: one line for each host, run on all nodes.
/usr/bin/ssh -e none -o 'HostKeyAlias=pve01' root@172.16.2.31 /bin/true
HostKeyAlias=YOURSERVER
root@IPYOURSERVER

This worked for me.
I tried everything, I hope the problem is gone now