Very basic script to backup lxd containers to tar file

lxd-backup.sh

#!/bin/bash
DATE=`date +%m-%d-%Y`
OLD_DATE=`date +%m-%d-%Y -d "7 day ago"`
BACKUP_DIR=/var/backups/containers

if [ ! -d "$BACKUP_DIR" ]; then
  mkdir -p $BACKUP_DIR
fi

for i in $(ls /var/snap/lxd/common/lxd/containers); do 

echo "=============================="
echo Taking snapshot of containers $i .....
echo "=============================="

/snap/bin/lxc snapshot $i $i-$DATE

if lxc image list | grep "$i-$DATE-backup"
then
    echo "Image is present, skipping job"
else
    echo "=============================="
    echo Publishing $i to local image server .....
    echo "=============================="
    /snap/bin/lxc publish $i/$i-$DATE --alias $i-$DATE-backup
fi


if [ -f $BACKUP_DIR/$i-$DATE-backup.tar.gz ]; 
then
    echo "Backup file is present, skipping job"
else
    echo "=============================="
    echo Exporting $i to $BACKUP_DIR .....
    echo "=============================="

    /snap/bin/lxc image export $i-$DATE-backup $BACKUP_DIR/$i-$DATE-backup
fi

echo "=============================="
echo Removing backup files older than 7 days .....
echo "=============================="

find $BACKUP_DIR -type f -mtime +7 -name '*.gz' -execdir rm -- '{}' +


echo "=============================="
echo Removing backup images older than 7 days .....
echo "=============================="

/snap/bin/lxc image delete $i-$OLD_DATE-backup

echo "=============================="
echo Removing snapshot images older than 7 days .....
echo "=============================="

/snap/bin/lxc delete $i/$i-$OLD_DATE

echo "=============================="
echo Setting correct file ownership in $BACKUP_DIR .....
echo "=============================="

find $BACKUP_DIR/ -type f -exec chown root:root {} \;
find $BACKUP_DIR/ -type f -exec chmod 0640 {} \;
find $BACKUP_DIR/ -type d -exec chmod 0640 {} \;



done