Changes cluster network
stop corosync and pmxcfs on all nodes
systemctl stop corosync pve-cluster
start pmxcfs in local mode on all nodes
pmxcfs -l
put correct corosync config into local pmxcfs and corosync config dir (make sure to bump the 'config_version' inside the config file)
cp correct_corosync.conf /etc/pve/corosync.conf
cp correct_corosync.conf /etc/corosync/corosync.conf
kill local pmxcfs
killall pmxcfs
start corosync and pmxcfs again
systemctl start pve-cluster corosync
check status
journalctl --since '-5min' -u pve-cluster -u corosync
pvecm status