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#!/bin/bash
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# Just backups volumes of running containers
# If rsync stucks consider:
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# @see https://stackoverflow.com/questions/20773118/rsync-suddenly-hanging-indefinitely-during-transfers
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#
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backup_time = " $( date '+%Y%m%d%H%M%S' ) " ;
backups_folder = "/Backups/" ;
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repository_name = " $( cd " $( dirname " $( readlink -f " ${ 0 } " ) " ) " && basename ` git rev-parse --show-toplevel` ) " ;
machine_id = " $( sha256sum /etc/machine-id | head -c 64) " ;
backup_repository_folder = " $backups_folder $machine_id / $repository_name / " ;
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for volume_name in $( docker volume ls --format '{{.Name}}' ) ;
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do
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echo " start backup routine: $volume_name " ;
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containers = " $( docker ps --filter volume = " $volume_name " --format '{{.Names}}' ) " ;
containers_array = ( $containers )
container = ${ containers_array [0] }
echo " stop containers: $containers " && docker stop " $containers "
for source_path in $( docker inspect --format " {{ range .Mounts }}{{ if eq .Type \"volume\"}}{{ if eq .Name \" $volume_name \"}}{{ println .Destination }}{{ end }}{{ end }}{{ end }} " " $container " ) ;
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do
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destination_path = " $backup_repository_folder " " latest/ $volume_name " ;
raw_destination_path = " $destination_path /raw "
prepared_destination_path = " $destination_path /prepared "
log_path = " $backup_repository_folder " "log.txt" ;
backup_dir_path = " $backup_repository_folder " " diffs/ $backup_time / $volume_name " ;
raw_backup_dir_path = " $backup_dir_path /raw " ;
prepared_backup_dir_path = " $backup_dir_path /prepared " ;
if [ -d " $destination_path " ]
then
echo " backup volume: $volume_name " ;
else
echo " first backup volume: $volume_name "
mkdir -vp " $raw_destination_path " ;
mkdir -vp " $raw_backup_dir_path " ;
mkdir -vp " $prepared_destination_path " ;
mkdir -vp " $prepared_backup_dir_path " ;
fi
docker run --rm --volumes-from " $container " -v " $backups_folder : $backups_folder " "kevinveenbirkenbach/alpine-rsync" sh -c "
rsync -abP --delete --delete-excluded --log-file= $log_path --backup-dir= $raw_backup_dir_path '$source_path/' $raw_destination_path " ;
echo " start containers: $containers " && docker start " $containers " ;
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done
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echo " end backup routine: $volume_name " ;
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done