Telegram-MongoDB-backup.sh

#!/bin/bash

MONGO_CONTAINER_NAME="mongo" # Or use the actual container name
# Variables
BOT_TOKEN="<your bot token>"
CHAT_ID="<chatId>"
FILE_PATH="/mongodb_backups/waitlist_backup.archive"  # Path where the archive will be stored on the host machine
FILE_PREFIX="part_"                      # Prefix for the split parts
PART_SIZE="49M"                          # Size of each part (49 MB to stay within Telegram bot limit)
# Dynamically get the container ID
MONGO_CONTAINER_ID=$(docker ps -qf "name=$MONGO_CONTAINER_NAME")
BACKUP_PATH="/backup"                    # Backup directory inside the container

# 0. Check if the backup directory exists inside the container, create it if it doesn't
docker exec $MONGO_CONTAINER_ID sh -c "[ ! -d \"$BACKUP_PATH\" ] && mkdir -p \"$BACKUP_PATH\""

# 1. Create the MongoDB backup inside the container
docker exec $MONGO_CONTAINER_ID mongodump --db=<your database> --collection=<your collection> --archive=$BACKUP_PATH/waitlist_backup.archive --username <mongo username> --password <mongo password> --authenticationDatabase admin

# 2. Copy the backup archive from the container to the local machine
docker cp $MONGO_CONTAINER_ID:$BACKUP_PATH/waitlist_backup.archive $FILE_PATH

# 3. Split the file into smaller parts
echo "Splitting the file..."
split -b $PART_SIZE "$FILE_PATH" "$FILE_PREFIX"

# 4. Send each part through Telegram
echo "Sending parts to Telegram..."
for file in ${FILE_PREFIX}*; do
    echo "Sending $file..."
    curl -F chat_id="$CHAT_ID" -F document=@"$file" "https://api.telegram.org/bot$BOT_TOKEN/sendDocument"
    sleep 2  # Add a delay to avoid hitting Telegram rate limits
done

echo "All parts sent successfully!"

# 5. Clean up: Delete the backup archive in the container
echo "Deleting backup archive in the container..."
docker exec $MONGO_CONTAINER_ID rm $BACKUP_PATH/waitlist_backup.archive

# 6. Clean up: Delete the backup archive and the split parts from the local machine
echo "Deleting backup files from the local machine..."
rm -f "$FILE_PATH" ${FILE_PREFIX}*

echo "Backup and cleanup completed!"