Backing up from any Linux Server

Proxmox Backup Client Installation

Proxmox Backup Client Installation

Debian Based Installation

For Debian based systems, please add the following information to your system.

To configure the repository, you will need to setup the Proxmox release key first. On your server, get the key from the following site below:

https://enterprise.proxmox.com/debian/proxmox-release-[debian version].gpg

Once you have the key on your server, move it to /usr/share/keyrings/

To add the repository, in /etc/apt/sources.list.d, create a file named proxmox.sources and add the following below:

Types: deb
URIs: http://download.proxmox.com/debian/pbs
Suites: [debian version]
Components: pbs-no-subscription
Signed-By: /usr/share/keyrings/proxmox-release-[debian version].gpg

Once you have this saved go ahead and run the following commands:

apt update
apt-get install proxmox-backup-client

When the installation finished you should be able to run proxmox-backup-client and get the following manual:

Screenshot 2026-02-06 134620.png

If you have any issues installing the client, please refer to Proxmox's Official Documentation or reach out to support@untangledtechnology.com

Backing Up

Backing Up

How to Backup Your Data

To backup your data/files from your server, you will need your encryption key file and password.

Your repository will be: 

Account_Name@pbs@hostname/IP:Account_Name

Example command for backing up a folder or file

proxmox-backup-client backup [linux_user].pxar:[folder/file path] --repository [your repository link]  --keyfile /path/to/encryption/file.key

For more in depth or complex backup commands, please refer to Proxmox's Backup Usage Manual.

Restoring Backups

Restoring Backups

How to Restore Your Backups

Proxmox's Official Documentation

First, ensure that you have the encryption key file and the encryption file password ready to go. If you have forgotten either, please check your onboarding email for the details.

To connect to the backup server repository, login with the following command. You will be prompted to enter your password.

proxmox-backup-client login --repository "FirstName_LastName@pbs@[Hostname or IP]:[Datatore Name]

Once you have successfully logged in, run the following command to see your backup snapshots.

proxmox-backup-client snapshot list

To restore your selected files you can use the following command

proxmox-backup-client restore [host/example/2026-01-30T23:06:35Z] index.json --repository "" --keyfile /path/to/keyfile


Removing/Pruning Backups

Removing/Pruning Backups

How to Remove Backups

To remove backups, please refer to the following documentation

For additional information on how to use the proxmox-backup-client to prune your backups, please refer to Proxmox's Official Documentation