Borg Backup

This is a set of useful scripts for setting up a borg backup to a (remote) repository. Features:

• Defining variables, exclude and include patterns via config / env files
• Backup script for creating / updating backups as well as pruning
• Automated mounting of repository to a local folder for easy browsing and restoring from the archive

Test environment

• Ubuntu 18.04 / 20.04
• BorgBackup 1.2
• Remote repository: Hetzner Storage Box (ssh / rsync)

Setup

• clone this repo
• copy .env.example to .env and set your vars
• make all scripts executable with chmod +x *.sh

Setup on remote server for automation without password by using ssh key

• login to remote server
• $ssh-keygen
• choose ~/.ssh/id_rsa_borg as saving key
• cat ~/.ssh/id_rsa_borg.pub
• copy and paste above id_rsa_borg.pub into your backup server ~/.ssh/authorized_keys
• do not forget to set permissions directory and file chmod 700 ~/.ssh; chmod 600 ~/.ssh/authorized_keys

Initialize

• wget https://github.com/borgbackup/borg/releases/download/1.2.8/borg-linuxold64
• chmod +x borg-linuxold64
• cp borg-linuxold64 /usr/local/bin/borg
• run borg-init.sh to intialize remote repo
• the repo will be setup with the passphrase configured in .env
• the encryption key will be copied to the current directory - please store it in secure location and remove it
• copy patterns.example.lst to patterns.lst to define your included and excluded patterns, the script is using the patterns-from feature - see here for details https://manpages.debian.org/testing/borgbackup/borg-patterns.1.en.html

Running Backups

• run borg-backup.sh to create initial backup
• add entry to crontab for daily backups:

0 3 * * * /MY_PATH_TO/borg-backup/borg-backup.sh > /dev/null 2>&1

• check logfile (see .env) for results or errors

Restoring Backups

• configure restore folder in .env, e.g. /mnt/borg
• run borg-mount.sh - this will mount the repository to the defined location
• now you can browse all archives and restore files via bash
• be sure to unmount the restore folder with borg umount MY_RESTORE_FOLDER

For questions please contact [email protected]