lollipopcloud/services/borg.md

Borg Backups

The BETTER backup solution.

BE MINDFUL OF RUNNING BORG. IT CAN CAUSE PROBLEMS WITH DISK IOPS AND RAM USAGE. BEST USED WHEN THE MACHINE IS KNOWN TO BE IDLE!!!

Inspiration / Further Reading

• https://borgbackup.readthedocs.io/en/stable/installation.html#from-source

Install

Note: we are downloading pre-built borg images from the main lollipop cloud servers in this step instead of building it from scratch

arm32v7 boards

wget -O /usr/local/bin/borg https://dl.lollipopcloud.solutions/api/download/borg/borg-1.1.7-arm32v7-debian-stretch

arm64v8 boards

wget -O /usr/local/bin/borg https://dl.lollipopcloud.solutions/api/download/borg/borg-1.1.7-arm64v8-debian-stretch

All boards

chmod a+x /usr/local/bin/borg

Initialize Backup Repo

Note: assumes you have a /tank on external disk

cd /tank/backup
borg init --encryption none . # No crypto/auth for speed (see docs for more infos)

Backup Script

Setup a backup script that backs up everything (note the excludes) to the initialized repository.

Run /root/borg_backup.sh any time you want to take a backup.

cat > /root/borg_backup.sh <<EOF
#!/bin/sh
REPOSITORY=/tank/backup

# Backup all of /home and /var/www except a few
# excluded directories
/usr/local/bin/borg create -v --progress --stats -C lzma,3 \\
    \$REPOSITORY::backup-\`date +%Y-%m-%d-%H%M\` \\
    / \\
    --exclude /run \\
    --exclude /snapshots \\
    --exclude /tank \\
    --exclude /scratch \\
    --exclude /swap \\
    --exclude /proc \\
    --exclude /sys \\
    --exclude /var/lib/schroot/mount \\
    --exclude /var/lib/lxcfs \\
    --exclude /var/lib/docker \\
    --exclude /mnt

# Use the 'prune' subcommand to maintain 7 daily, 4 weekly
# and 6 monthly archives.
/usr/local/bin/borg prune -v --list \$REPOSITORY \\
    --keep-daily=7 \\
    --keep-weekly=4 \\
    --keep-monthly=6

EOF

chmod a+x /root/borg_backup.sh