I’ve spent most of my day today trying a plethora of different ways on how to configure Proxmox on a Hetzner server with multiple IP addresses. Most of the tutorials I found online gave a good deal of information but where lacking in one or two crucial details. Shortly before I was ready to throw my computer out of the window, I had success and managed to get everything set up the way I wanted it.

This aims to be the definitive guide on how to accomplish the aforementioned task. When ready the setup includes the following features:

  • Host bound to main IPv4 address, that comes with the server (and one of the 18,446,744,073,709,551,616 included IPv6 addresses)
  • Every IPv4 address of a separately delegated subnet usable for virtual machines
  • Internal private network for inter-virtual machine communication and non publicly accessible VMs

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Recently I’ve had to re-engineer my whole backup strategy because of a looming hardware issue on my old backup server. Since I am operating servers at Hetzner, I purchased some backup space there and based my new system around their available system. The new strategy consists of several key components:

  • Mounting a remote directory via sshfs
  • Ensuring the remote mountpoint is always available using autofs
  • Creating a loopback filesystem on the remote storage
  • Incremental rsync snapshots using my Hactar backup script

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