proxmox migration error

Question

What is the cause of the following error message during the Proxmox VM migration: "ERROR: migration aborted (duration 00:00:00): Can't connect to destination address using public key"?

Answer 1

"ssh-keygen -f "/etc/ssh/ssh_known_hosts" -R "IP" on every node. This command removes the specified host key entry for the IP address "10.10.30.21" from the "/etc/ssh/ssh_known_hosts" file, allowing the system to establish a new connection with the destination server during the Proxmox VM migration.