52 lines
1.6 KiB
Bash
Executable File
52 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# Check if the Docker Compose file was provided
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if [ $# -eq 0 ]; then
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echo "No Docker Compose file provided"
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exit 1
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fi
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COMPOSE_FILE=$1
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DIR=$(dirname "${COMPOSE_FILE}")
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BASE_DIR_NAME=$(basename "${DIR}")
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BACKUP_DIR=/mnt/backups/$BASE_DIR_NAME
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TIMESTAMP=$(date +"%Y%m%d%H%M%S")
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# Create a new backup directory for this stack if it doesn't already exist
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mkdir -p $BACKUP_DIR
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# Stop the Docker Compose stack
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docker-compose -f $COMPOSE_FILE down
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# Tarball the Docker Compose directory
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CONFIG_BACKUP_FILE="files_${DIR##*/}"_$TIMESTAMP.tar.gz
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tar -czvf $BACKUP_DIR/$CONFIG_BACKUP_FILE -C / $DIR
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# Identify and save each Docker image used by the stack
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IMAGES=$(docker-compose -f $COMPOSE_FILE config | awk '{if ($1 == "image:") print $2;}')
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BACKUP_FILE=$BACKUP_DIR/"backup_${BASE_DIR_NAME}_${TIMESTAMP}.txt"
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# Clear the backup list file
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echo "${COMPOSE_FILE}" > $BACKUP_FILE
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# Write config backup file name to the backup list file
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echo $CONFIG_BACKUP_FILE >> $BACKUP_FILE
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for IMAGE in $IMAGES; do
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# Get image id (strip off "sha256:" prefix)
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IMAGE_ID=$(docker inspect --format="{{.Id}}" $IMAGE | sed 's/sha256://')
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# Check if the image backup file already exists
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IMAGE_BACKUP_FILE="image_${IMAGE//[:\/]/_}_${IMAGE_ID}.tar.gz"
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IMAGE_BACKUP=$BACKUP_DIR/$IMAGE_BACKUP_FILE
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if [ ! -f $IMAGE_BACKUP ]; then
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docker save $IMAGE | gzip > $IMAGE_BACKUP
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fi
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# Write image backup file name to the backup list file
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echo $IMAGE_BACKUP_FILE >> $BACKUP_FILE
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done
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# Restart the Docker Compose stack
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docker-compose -f $COMPOSE_FILE up -d
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