PBS 4 Upgrade
This script guides you through upgrading Proxmox Backup Server from version 3.x (Debian 12 Bookworm) to version 4.0 (Debian 13 Trixie). It adjusts the Debian base sources, configures PBS 4 repositories in deb822 format, updates enterprise/no-subscription/test repos, runs a full system upgrade, and finalizes with a reboot.
PBS 4 Upgrade
Installation
Default install:
1
bash -c "$(wget -qLO - https://github.com/community-scripts/ProxmoxVE/raw/main/tools/pve/pbs4-upgrade.sh)"
Notes
Execute this script directly on the PBS 3.x host as root.
Ensure you have a verified backup of /etc/proxmox-backup before starting.
Do not run this on an already upgraded PBS 4.x system.
A reboot is strongly recommended after upgrade to activate the new kernel and services.
Links
This post is licensed under CC BY 4.0 by the author.