@yehor@mastodon.glitchy.social don't do it. Proxmox uses corosync for cluster communication, and it's incredibly sensitive to network latency and dropped packets, unless your network link to the hosting provider is superb, you're going to end up with the server getting fenced constantly. A better idea is to run it as a stand alone sever, and use either Proxmox Datacenter Manager, or Pegaprox, both of which will let you manage all the servers through a single interface, and allow live migrations between them, without the servers having to be clustered together.