Here it is with just 2 nodes connected:
root@proxmox-02:~# cat /etc/pve/.members
{
"nodename": "proxmox-02",
"version": 4,
"cluster": { "name": "mycluster", "version": 2, "nodes": 2, "quorate": 1 },
"nodelist": {
"proxmox-01": { "id": 1, "online": 1, "ip": "192.168.0.1"},
"proxmox-02": {...