Based on the excellent script of wofferl.
Note: Starting from version 4.0, Proxmox Backup Server requires Debian 13 (Trixie) or distributions based on it.
Update the apt package index and install packages to allow apt to use a repository over HTTPS:
sudo apt update
sudo apt install -y ca-certificates curl gnupg lsb-release
Add GPG key:
mkdir -p /etc/apt/keyrings
sudo curl -fsSL https://dexogen.github.io/pipbs/gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/pipbs.gpg
Use the following command to set up the repository:
echo "deb [arch=arm64 signed-by=/etc/apt/keyrings/pipbs.gpg] https://dexogen.github.io/pipbs/ trixie main" | sudo tee /etc/apt/sources.list.d/pipbs.list
apt package index:
sudo apt update
sudo apt install -y raspberrypi-kernel-headers pv zfs-initramfs zfsutils-linux
sudo apt install -y proxmox-backup-server
If you encounter issues, first check the Help section and consult the official Proxmox Backup Server documentation.