Scirpt to easily backup and restore docker volumes

backup.sh

#!/bin/bash

# Set backup directory
BACKUP_DIR="./docker_backups"
DATE=$(date +%Y%m%d_%H%M%S)

# Create backup directory if not exists
mkdir -p "$BACKUP_DIR"

# Loop through all running containers from docker-compose
for CONTAINER in $(docker-compose ps -q); do
    CONTAINER_NAME=$(docker inspect --format='{{.Name}}' "$CONTAINER" | cut -c2-)  # Remove leading "/"
    echo "Backing up container: $CONTAINER_NAME"

    # Get volume mounts for the container
    MOUNTS=$(docker inspect --format='{{range .Mounts}}{{if eq .Type "volume"}}{{.Name}}:{{.Source}} {{end}}{{end}}' "$CONTAINER")

    for MOUNT in $MOUNTS; do
        VOLUME_NAME=$(echo "$MOUNT" | cut -d':' -f1)
        VOLUME_PATH=$(echo "$MOUNT" | cut -d':' -f2)

        echo "Backing up volume: $VOLUME_NAME at path: $VOLUME_PATH"
        
        # Backup the volume
        BACKUP_FILE="$BACKUP_DIR/${CONTAINER_NAME}_${VOLUME_NAME}_$DATE.tar.gz"
        tar -czf "$BACKUP_FILE" -C "$VOLUME_PATH" .
        
        echo "Backup saved: $BACKUP_FILE"
    done
done

echo "All backups completed!"

restore.sh

#!/bin/bash

# Set backup directory
BACKUP_DIR="/absolute/path/to/docker_backups"  # <-- Make sure this is the correct path!

# Check if the backup directory exists
if [ ! -d "$BACKUP_DIR" ]; then
    echo "Backup directory not found: $BACKUP_DIR"
    exit 1
fi

# Loop through all containers managed by Docker Compose
for CONTAINER in $(docker-compose ps -q); do
    CONTAINER_NAME=$(docker inspect --format='{{.Name}}' "$CONTAINER" | cut -c2-)  # Remove leading "/"
    echo "Restoring volumes for container: $CONTAINER_NAME"

    # Get volume mounts for the container
    MOUNTS=$(docker inspect --format='{{range .Mounts}}{{if eq .Type "volume"}}{{.Name}}:{{.Source}} {{end}}{{end}}' "$CONTAINER")

    for MOUNT in $MOUNTS; do
        VOLUME_NAME=$(echo "$MOUNT" | cut -d':' -f1)
        VOLUME_PATH=$(echo "$MOUNT" | cut -d':' -f2)

        # Find the most recent backup for the volume
        BACKUP_FILE=$(ls -t "$BACKUP_DIR/${CONTAINER_NAME}_${VOLUME_NAME}_*.tar.gz" | head -n 1)

        # Debugging: Check if the backup file exists
        if [ ! -f "$BACKUP_FILE" ]; then
            echo "Error: No backup file found for volume $VOLUME_NAME in container $CONTAINER_NAME at $BACKUP_FILE"
            continue
        fi

        echo "Restoring volume: $VOLUME_NAME from backup: $BACKUP_FILE"
        echo "Volume path: $VOLUME_PATH"

        # Debugging: Check if the volume path exists
        if [ ! -d "$VOLUME_PATH" ]; then
            echo "Error: Volume path does not exist: $VOLUME_PATH"
            continue
        fi

        # Stop the container to safely restore the volume
        echo "Stopping container: $CONTAINER_NAME"
        docker stop "$CONTAINER_NAME"

        # Extract the backup to the volume's directory
        tar -xzf "$BACKUP_FILE" -C "$VOLUME_PATH"

        # Start the container after restoration
        echo "Starting container: $CONTAINER_NAME"
        docker start "$CONTAINER_NAME"

        echo "Volume restored: $VOLUME_NAME"
    done
done

echo "All volumes restored!"