poor_man_s_lxd_ftp_backup.sh

#!/bin/bash

log_dt() {
        date '+%d.%m.%y %H:%M:%S'
}

DAY_OF_WEEK=$(date +%u)

if [ $DAY_OF_WEEK -eq 1 ]
then
        SUFFIX=weekly
else
        SUFFIX=daily
fi

SNAPSHOT=backup-cron

cd /mnt/backup-tmp

for CONTAINER in $(lxc list --format csv --columns n)
do
        log_dt; echo Backing up container ${CONTAINER}

        log_dt; echo Delete old snapshot ${CONTAINER}/${SNAPSHOT}
        lxc delete ${CONTAINER}/${SNAPSHOT}

        log_dt; echo Make new snapshot ${CONTAINER} ${SNAPSHOT}
        lxc snapshot ${CONTAINER} ${SNAPSHOT}

        log_dt; echo Delete old image ${CONTAINER}_${SNAPSHOT}
        lxc image delete ${CONTAINER}_${SNAPSHOT}

        log_dt; echo Publish snapshot ${CONTAINER}/${SNAPSHOT} to image ${CONTAINER}_${SNAPSHOT}
        lxc publish ${CONTAINER}/${SNAPSHOT} --alias ${CONTAINER}_${SNAPSHOT}

        log_dt; echo Delete new snapshot ${CONTAINER}/${SNAPSHOT}
        lxc delete ${CONTAINER}/${SNAPSHOT}

        log_dt; echo Export image ${CONTAINER}_${SNAPSHOT} to archive ${CONTAINER}_${SUFFIX}
        lxc image export ${CONTAINER}_${SNAPSHOT} ${CONTAINER}_${SUFFIX}

        log_dt; echo Delete new image ${CONTAINER}_${SNAPSHOT}
        lxc image delete ${CONTAINER}_${SNAPSHOT}

        log_dt; echo Upload archive ${CONTAINER}_${SUFFIX}.tar.gz to FTP and delete it when done
        ncftpput -DD backup /lxd ${CONTAINER}_${SUFFIX}.tar.gz

        log_dt; echo Backup of container ${CONTAINER} complete
done