Proxmox PBS 3 Installation Guide

Hello everyone! In this guide, I'll show you how to install Proxmox PBS 3 on Debian 12.

1. SSH Login

First, log into your SSH server as root:

ssh root@yourfavoritedomain.tld

2. Updating Packages

Update the Debian 12 packages:

apt update && apt upgrade -y

3. Adding Proxmox Repository

Install necessary packages:

apt install curl software-properties-common apt-transport-https ca-certificates gnupg2

Add the Proxmox repository in the sources.list with nano /etc/apt/sources.list

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

# Proxmox Backup Server pbs-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pbs bookworm pbs-no-subscription

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

Install the GPG Key

wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg

Update and upgrade the system:

apt update && apt dist-upgrade -y

4. Installing Proxmox Backup Server

Now we have two options to choose from. Would you like to have Proxmox's own kernel, or do you already have Proxmox VE on the same machine (not recommended)? Go with Option A if you're setting up Proxmox for the first time. If you'd prefer to keep your current kernel and only install minimal packages, go with Option B.

Option A: Install Proxmox Backup Server with Proxmox Kernel

This will install all required packages, including the Proxmox kernel with ZFS support and additional common packages.

apt update
apt install proxmox-backup

Option B: Install Proxmox Backup Server with Debian Kernel

If you prefer to keep your current Debian kernel and only install the minimal set of required packages, use the following:

apt update
apt install proxmox-backup-server

Configure Postfix (select "Local only" for mail configuration):

Enter your email address for Proxmox notifications:

Yay! After reboot, you can access the Proxmox Backup Server via https://yourdomain.tld:8007.

Congratulations, the Proxmox Backup Server is now successfully installed! Enjoy using Proxmox!