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improved docker backup and restore

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tabledevil
2023-06-07 14:17:05 +02:00
parent 32ca98f99e
commit a6ed73fcfb
2 changed files with 79 additions and 2 deletions
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24
tools/backup_docker.sh
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@@ -19,12 +19,32 @@ mkdir -p $BACKUP_DIR
docker-compose -f $COMPOSE_FILE down
# Tarball the Docker Compose directory
tar -czvf $BACKUP_DIR/"files_${DIR##*/}"_$TIMESTAMP.tar.gz -C / $DIR
CONFIG_BACKUP_FILE="files_${DIR##*/}"_$TIMESTAMP.tar.gz
tar -czvf $BACKUP_DIR/$CONFIG_BACKUP_FILE -C / $DIR
# Identify and save each Docker image used by the stack
IMAGES=$(docker-compose -f $COMPOSE_FILE config | awk '{if ($1 == "image:") print $2;}')
BACKUP_FILE=$BACKUP_DIR/"backup_${BASE_DIR_NAME}_${TIMESTAMP}.txt"
# Clear the backup list file
echo "${COMPOSE_FILE}" > $BACKUP_FILE
# Write config backup file name to the backup list file
echo $CONFIG_BACKUP_FILE >> $BACKUP_FILE
for IMAGE in $IMAGES; do
docker save $IMAGE | gzip > $BACKUP_DIR/"image_${IMAGE//[:\/]/_}"_$TIMESTAMP.tar.gz
# Get image id (strip off "sha256:" prefix)
IMAGE_ID=$(docker inspect --format="{{.Id}}" $IMAGE | sed 's/sha256://')
# Check if the image backup file already exists
IMAGE_BACKUP_FILE="image_${IMAGE//[:\/]/_}_${IMAGE_ID}.tar.gz"
IMAGE_BACKUP=$BACKUP_DIR/$IMAGE_BACKUP_FILE
if [ ! -f $IMAGE_BACKUP ]; then
docker save $IMAGE | gzip > $IMAGE_BACKUP
fi
# Write image backup file name to the backup list file
echo $IMAGE_BACKUP_FILE >> $BACKUP_FILE
done
# Restart the Docker Compose stack