43 lines
973 B
Text
43 lines
973 B
Text
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#!/usr/bin/env bash
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# https://github.com/spherex-dev/docker-backup-volume
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# creates a backup of the docker volume
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while [ $# -gt 0 ]; do
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case "$1" in
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-v|-volume|--volume)
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volume="$2"
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;;
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-p|-prefix|--prefix)
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prefix="$2"
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;;
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-h|-help|--help)
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printf "--volume the name of the volume\n"
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printf "--mount the mount point of the volume\n"
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exit 1
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;;
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*)
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printf "***************************\n"
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printf "* Error: Invalid argument.*\n"
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printf "***************************\n"
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exit 1
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esac
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shift
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shift
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done
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uuid=$(cat /proc/sys/kernel/random/uuid)
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if [ ! -d $prefix/$volume ]; then
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mkdir -p $prefix/$volume
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fi
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IMAGE=alpine:latest
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docker run \
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--mount "type=volume,src=${volume},dst=/data" \
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--name $uuid \
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$IMAGE
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timestamp=$(date +%Y-%m-%d_%H%M%S)
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docker cp -a $uuid:/data /tmp/$uuid
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tar -C /tmp/$uuid -czf $prefix/$volume/${timestamp}_${volume}.tar.gz .
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rm -rf /tmp/$uuid
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docker rm $uuid
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