Inspired from a lot of Youtuber’s on how to deploy a Proxmox server, here is some notes either shameless copied from youtube or something I need in my environment.

I like to install Proxmox on a set of mirrored ZFS drives. Dont use cheap USB sticks. Although a high quality USB stick should be capable to run Proxmox. Maybe a SATA-Dom SSD on a stick kinda thing. Proxmox uses its boot drive to a lot of writes and reads. ESXi is more USB stick friendly because it runs everything in RAM.

1. Switch Proxmox from Enterprise license to Unstable community license.
   • Edit /etc/apt/sources.list and add the nosubscription repository:
   • deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription

deb http://ftp.debian.org/debian bookworm main contrib
deb http://ftp.debian.org/debian bookworm-updates main contrib

# PVE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription

# security updates
deb http://security.debian.org/debian-security bookworm-security main contrib

Edit /etc/apt/sources.list.d/pve-enterprise.list.dpkg-dist to:

# deb https://enterprise.proxmox.com/debian/pve bookworm pve-enterprise

Run apt-get update followed by apt dist-upgrade

Reboot the host by using shutdown -r now

Install pve-headers

apt install pve-headers-$(uname -r)

Fix the following error in terminal:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_TERMINAL = "iTerm2",
	LC_CTYPE = "UTF-8",
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").

Run

dpkg-reconfigure locales

Select at least one locale, and rebuild that. In my case I just choose:

                                                                                                                                                                                  C.UTF-8                                                                                                    da_DK                                                                                                      da_DK.UTF-8                                                                                                en_DK                                                                                                      en_DK.ISO-8859-15                                                                                          en_DK.UTF-8                                                                                                en_US                                                                                                      en_US.ISO-8859-15                                                                                          en_US.UTF-8

And next I choose en_US.UTF-8 as the default locale.

The following guide is copied from this reddit post

(Guide) Installing Proxmox Root on ZFS with different capacity drives

Guide

Purpose of this post:

• To provide an easy to find simple guide for people surfing the web
• To receive feedback from the community, since I’m by no means an expert

Guide:

1. Install Proxmox on the lowest capacity disk on zfs (RAID0)
2. Copy the partition table, reissue GUIDs and attach the ZFS partition
   # sgdisk <existing boot disk> -R <new disk>
# sgdisk -G <new disk>
# zpool attach -f rpool <existing zfs partition> <new zfs partition>
3. Before continuing make sure the resilvering process has finished
   # zpool status -v
4. Run the following commands
   # proxmox-boot-tool format <new disk's ESP>
# proxmox-boot-tool init <new disk's ESP>

You’ve now successfully added a partition to the zfs rpool
The pool will be RAID 1 mirrored

Additional information:

• The process is very similar to replacing a bootable device
• I recommended reading about the Proxmox partitioning scheme
• Information about zpool attach and how it transforms the raidz configuration

Example:

# sgdisk /dev/sda -R /dev/sdb
# sgdisk -G /dev/sdb
# zpool attach -f rpool /dev/disk/by-id/ata-Samsung_SSD_860_PRO_256GB_42654364K-part3 /dev/disk/by-id/ata-Samsung_SSD_860_PRO_1TB_65433654R-part3

# zpool status -v

# proxmox-boot-tool format /dev/sdb2
# proxmox-boot-tool init /dev/sdb2