Install Proxmox Backup Server on Debian 12 Rumi, February 12, 2025February 12, 2025 Set Hostname. Edit /etc/hostname. # nano /etc/hostname Overwrite the file with following content and save using Ctrl + X then Enter. pbs.example.com Edit /etc/hosts. # nano /etc/hosts Add the following line and save the file using Ctrl + X then Enter. 127.0.0.1 pbs.example.com Reboot the server. # reboot Check if the system hostname matches your subdomain. # hostname Check if the system hostname resolves as 127.0.0.1. # ping pbs.example.com Add Repository Add GPG key to the APT sources keyring. # wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg Edit /etc/apt/sources.list. # nano /etc/apt/sources.list Add the following line and save the file using Ctrl + X then Enter. deb http://download.proxmox.com/debian/pbs bookworm pbs-no-subscription Install Package Refresh package list. # apt update Install proxmox-backup package. # apt install proxmox-backup Select “Internet with smarthost” in Postfix installation wizard & leave the rest set as default. Reboot the server. # reboot Verify Installation. Open the following link in your web browser to verify if the installation was successful. https://pbs.example.com:8007 Src: https://docs.vultr.com/how-to-install-proxmox-backup-server-on-debian-11-2488 Administrations Configurations (Linux)