Proxmox: force exit cluster & re-join

sh.bash

# NOTE!! DO THIS ONE BY ONE, IT FAILS IF TWO NODES TRY TO JOIN AT THE SAME TIME!

# export LANG=en_US.UTF-8
# export LC_ALL=en_US.UTF-8

#pvecm expected 1

# Clear join (back to standalone)

systemctl stop pve-cluster corosync
pmxcfs -l
rm -rf /etc/corosync/*
rm /etc/pve/corosync.conf
killall pmxcfs

systemctl start pve-cluster

cd /etc/pve/nodes; ls |grep -v `hostname` |xargs -I___ rm -rf ___
pvesm status|grep  -v active|cut -d ' ' -f 1|grep -v "Name"|xargs -I___ pvesm remove ___

# Re-join with force to allow existing VMs

systemctl restart pve-cluster

# pvecm add 10.254.3.183 --force