This post introduces a fork of the FreeBSD beadm utility which can be used to manage Boot Environments on Proxmox ZFS Installations. In this Post I will showcase how to use the beadm Boot Environment manager in Proxmox. After the showcase there are some notes on what I did to make beadm run on Linux in general and finally a part about what has been changed in order to make beadm work with Proxmox specifically....
Dear Reader, this time I would like to invite you onto a small journey: To boldly go where no man has gone before (Alright, that’s not true, but I think it’s the first time someone documents this kind of thing in the context of Proxmox). We’re about to embark on a journey to make your Proxmox host quite literally immortal. Also since what we are essentially doing here is only a Proof of concept, you probably shouldn’t use it in production, but as it’s really amazing, so you might want to try it out in a test environment....
This describes how to set up a fully encrypted Proxmox VE 6 host with ZFS root and unlocking it remotely using the dropbear ssh server. Also it describes how you can do that, while keeping systemd-boot and thus also the pve tooling intact. (I’m not sure if the pve tooling still works if you replace systemd-boot with grub, which seems to be the common solution to creating this kind of setup, maybe it does....