vackup_all.bash

#!/usr/bin/env bash

# NOTE: Deprecated in favor of https://github.com/Guiorgy/docker-vackup

# This is a wrapper for vackup: https://github.com/BretFisher/docker-vackup
# Installation:
# sudo curl -sSL https://raw.githubusercontent.com/BretFisher/docker-vackup/main/vackup -o /usr/local/bin/vackup && sudo chmod +x /usr/local/bin/vackup

# Based on PR #6: https://github.com/BretFisher/docker-vackup/pull/6

# This script stops all running containers, backs up the volumes of all
# containers (including those that were not running), and restarts the
# containers that were stopped

vackup="/usr/local/bin/vackup"
date="/usr/bin/date"
docker="/usr/bin/docker"
mkdir="/usr/bin/mkdir"
ls="/usr/bin/ls"
grep="/usr/bin/grep"
tail="/usr/bin/tail"
xargs="/usr/bin/xargs"

backup_root_directory="$1"
if [ -z "$backup_root_directory" ]; then
  echo 1>&2 'Must provide path to the backup destination'
  exit 1
fi

datetime=$($date +"%F_%H-%M-%S")
backup_directory="${backup_root_directory}/${datetime}"

running_containers=$($docker ps -q)
all_containers=$($docker ps -a -q)
all_volumes=$($docker volume ls -q)

# Get a list of containers that mount at least one volume
containers_with_volumes=''
for volume in $all_volumes; do
  containers=$(docker ps -q --filter "volume=$volume" | tr '\n' ' ' | awk '{$1=$1;print}')
  containers_with_volumes="$containers_with_volumes $containers"
done
containers_with_volumes=$(echo "$containers_with_volumes" | tr ' ' '\n' | sort -u | tr '\n' ' ')

# Stop running containers with volumes
if [ -n "$running_containers_with_volumes" ]; then
  $docker stop $running_containers_with_volumes
fi

# Prepare the backup directory
$mkdir "${backup_directory}"
cd "${backup_directory}" # vackup dumps backups into the working directory and doesn't support full paths

# Backup all volumes
for volume in $all_volumes; do $vackup export $volume ${volume}.tar.gz ; done

# Backup containers as docker-compose.yaml
$docker run --rm -v /var/run/docker.sock:/var/run/docker.sock ghcr.io/red5d/docker-autocompose $all_containers > docker-compose.yaml

# Restart previously stopped containers
if [ -n "$running_containers_with_volumes" ]; then
  $docker restart $running_containers_with_volumes
fi

# If the number of backups exceeds this number, remove the oldest backups
number_of_backups_to_keep=100

# Remove old backups
cd "${backup_root_directory}"
$ls -tp | $grep '/$' | $tail -n +$((number_of_backups_to_keep + 1)) | $xargs -I {} rm -rf -- {}