Proxmox Offline Mirror is released as standard Debian package and is available in the Proxmox VE, Proxmox Backup Server and Proxmox Mail Gateway package repositories.
CPU: 64bit (x86-64 or AMD64), ideally 2+ Cores
Debian based system (physical host, VM or container)
Sufficient storage space for the local mirrors. For a basic Debian and Proxmox VE we recommend at least 150 GiB
A file system supporting hard links for both, the local host and the external medium. Note that most Linux derived file systems support hard links, but Windows derived ones (for example, *FAT) do not support hard links.
Installation via APT¶
If the host you want to install the
proxmox-offline-mirror tools on, already has a package
repository from a Proxmox solution configured, you can simply install the offline mirror tool with
# apt update
# apt install proxmox-offline-mirror
If you do not have any Proxmox VE, Proxmox Backup Server or Proxmox Mail Gateway repositories set up, see SecureApt and Set up the Repository on non Proxmox based systems for how to do so before using the commands above.
Debian Package Repositories¶
All Debian based systems use APT as a package management tool. The lists of repositories are
/etc/apt/sources.list and the
.list files found in the
directory. Updates can be installed directly with the
apt command line tool, or via the GUI.
sources.list files list one package repository per line, with the most preferred source
listed first. Empty lines are ignored, and a
# character anywhere on a line marks the remainder
of that line as a comment. The information available from the configured sources is acquired by
The Release files in the repositories are signed with GnuPG. APT is using these signatures to verify that all packages are from a trusted source.
If you install Proxmox Offline Mirror on an existing Proxmox VE, Proxmox Backup Server or Proxmox Mail Gateway, the verification key will already be present.
If you install Proxmox Offline Mirror on top of Debian Bookworm, download and install the key with the following commands:
# wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg \
Verify the SHA512 checksum afterwards with the expected output below:
# sha512sum /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
or the md5sum, with the expected output below:
# md5sum /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
Set up the Repository on non Proxmox based systems¶
If you do not have an internet facing installation of a Proxmox solution, or want to set up a dedicated system for Proxmox Offline Mirror, you need to configure the repository first.
This should work on any Linux distribution using apt as package manager, such as Debian, Ubuntu or derivatives thereof.
To configure the repository, you first need to set up the Proxmox release key. After that, add the repository URL to the APT sources lists.
We recommend re-using the
pbs-client repository for installing the Proxmox Offline Mirror on non
While you could also use a Proxmox VE, Proxmox Backup Server or Proxmox Mail Gateway repository, those ship some updated packages from Debian native packages, which would get pulled in, even if not required for the offline mirroring.
Repository for Debian 12 (Bookworm) based releases¶
Here are the actual steps for a generic Debian 12 (Bookworm) based system.
First edit the file
/etc/apt/sources.list.d/pbs-client.list and add the following snippet:
deb http://download.proxmox.com/debian/pbs-client bookworm main
Now you should be able to install the
proxmox-offline-mirror package, see
Installation via APT.