Some ProxMox commands.

I've figured out how to bulk clone VMs in Proxmox which is very useful.

qm clone $VM_ID $CLONEID -name "$NAME" -pool "$POOL"

There are several other things that are useful dealing with clusters at http://wmunguiam.blogspot.com/2013/02/remove-node-cluster-forever-on-proxmox.html

List nodes:

pvecm nodes

Remove cluster node:

pvecm delnode node_name

But this may fail if you don't have a "quorum", in which case you change the number of nodes voting:

pvecm expected 1

Then delete the node.