Proxmox ve 7.x 安裝 Proxmox backup server 2.x

 cat <<EOF > /etc/apt/sources.list.d/pbs-no-subscription.list
# PBS pbs-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pbs bullseye pbs-no-subscription
EOF

apt-get update
apt-get install -y proxmox-backup-server

mv /etc/apt/sources.list.d/pbs-enterprise.list /etc/apt/sources.list.d/pbs-enterprise.list.bak