Below is a lab to create a Proxmox cluster.
Node1: pve01.linuxlab.local – 192.168.5.19
Node2: proxmox02.linuxlab.local – 192.168.5.21
Node3: proxmox03.linuxlab.local – 192.168.5.22
Step #1 Check hostname, date and /etc/hosts
192.168.5.19 pve01.linuxlab.local pve01
192.168.5.21 pve02.linuxlab.local pve02
192.168.5.22 pve03.linuxlab.local pve03
ping pve01
ping pve02
ping pve03
Creating Cluster via Proxmox GUI interface.
Click on Datacenter | Cluster | Create Cluster
Click on Copy information.
Install a LinuxMint VM on Proxmox node 3.