Assuming you have ProxmoxVE installed on one Homelab server… If you want to add a second node to your Proxmox cluster, this is the procedure:

  • Install ProxmoxVE on the new node
  • Login to the first node and create a Cluster
    • pvecm create CLUSTERNAME
  • Join the cluster on the second node
    • pvecm add IP-ADDRESS-CLUSTER
  • Check the status by running:
    • pvecm status or pvecm nodes

More info: https://pve.proxmox.com/wiki/Cluster_Manager#_adding_nodes_to_the_cluster