backup.sh

#!/bin/bash

# Random sleep up to 55 minutes - so all my VPSes don't back up at the same time and I don't have to manually manage distribution in CRON
sleep $(($RANDOM / 10))

export PASSPHRASE='SuperSecretPassphrase'

# Export backup location variable
backup_location="/home/backups/`hostname`/duplicity"

# Ensure backup location exists
ssh [email protected] "mkdir -p $backup_location"

echo "Beginning duplicity backups `date` \n\n" >> /var/log/duplicity.log

# Cleanup first (anything older than 21 days)
duplicity remove-older-than 14D -v9 "scp://[email protected]/$backup_location" >> /var/log/duplicity.log

# Now perform the backup
duplicity --exclude /base --exclude /bin --exclude /dev --exclude /proc --exclude /lib --exclude /opt --exclude /sbin --exclude /selinux --exclude /tmp --exclude /usr --exclude /var/cache --exclude /var/backups --exclude /var/spool --exclude /var/tmp --exclude /var/log --exclude /var/lock --exclude /var/lib --exclude /boot --exclude /init.rd.img --exclude /lost+found --exclude /mnt --exclude /media --exclude /vmlinuz --exclude /sys --full-if-older-than 7D / "scp://[email protected]/$backup_location" >> /var/log/duplicity.log

# Get the list of backups
duplicity collection-status "scp://[email protected]/$backup_location" >> /var/log/duplicity.log

echo "Duplicity backups completed `date`" >> /var/log/duplicity.log