When I used “ssh-keygen" to make a new id_rsa.pub and id_rsa files on somenode of proxmox cluster few days ago. This act ,Make this node can’t sync with other nodes of proxmox cluster.Becasue original ssh key had been replace by new one.
And, how to make this node re-sync with other nodes of cluster ? It is easy to repair sync by write id_rsa.pub /root/.ssh/authorized_keys on other nodes of cluster .
The command is like follow lines (remote machine must has folder /root/.ssh):
cat /root/.ssh/id_rsa.pub | ssh firstname.lastname@example.org “cat /root/.ssh/authorized_keys"
The content of id_rsa.pub file must write into every nodes of proxmox cluster .