backup.sh
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backup.sh
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	#!/bin/bash
	mkdir -p backup

	backup_path="$(pwd)/backup/"

	function backup_volume {
	volume_name=$1
	backup_destination=$2

	echo "Backing up $volume_name to $backup_destination"
	docker run --rm -v $volume_name:/data -v $backup_destination:/backup quay.io/centos/centos:stream8 tar -zcvf /backup/$volume_name.tar /data
	}

	echo "Stopping containers"
	docker-compose stop

	echo "Backing up volumes"
	volumes=($(docker volume ls -f name=kolab \| awk '{if (NR > 1) print $2}'))
	for v in "${volumes[@]}"
	do
	backup_volume $v $backup_path
	done

	echo "Restarting containers"
	docker-compose start