In order to redo the cluster you need to run the following commands on pc nodes
pvecm nodesrm -f /etc/pve/cluster.conf /etc/pve/corosync.conf rm -f /etc/cluster/cluster.conf /etc/corosync/corosync.conf rm /var/lib/pve-cluster/.pmxcfs.lockfile
On client nodes:
rm -f
/etc/corosync/authkey
Reboot
Set them up again