A simple script to back up a mongo db server and send statuses to a telegram group

BackupAndNotifyTelegram.sh

#!/bin/bash

# Capture the start time
start_time=$(date +%s)

# Telegram bot token and chat ID
bot_token="<TOKEN HERE>"
chat_id="<CHAT ID HERE>"
# MongoDB base command
mongodump_base_command="mongodump --uri=\"mongodb://< URI HERE >""

# Function to send a message via Telegram bot
send_message() {
    local message=$1
    curl -s -X POST "https://api.telegram.org/bot$bot_token/sendMessage" -d chat_id="$chat_id" -d text="$message"
}

# Get current datetime
DateRn=$(date +"%Y-%m-%d_%H-%M-%S")

send_message "Backup has started at $DateRn . Performing preflight checks..."

# Create the Backups directory if it doesn't exist
mkdir -p ./Backups

# Create the todays Backups directory if it doesn't exist
mkdir -p ./Backups/$DateRn

backup_dir_main="./Backups/$DateRn"
# Backup directory names
backup_dir_archive="./Backups/$DateRn/${DateRn}_archive"
backup_dir_normal="./Backups/$DateRn/${DateRn}_normal"


# Create the backup directories if they don't exist
mkdir -p $backup_dir_archive
mkdir -p $backup_dir_normal

send_message "Preflight checks completed successfully at $DateRn. Starting MongoDB dump..."

# MongoDB dump commands
mongodump_command_archive="$mongodump_base_command --archive=$backup_dir_archive/${DateRn}_archive.archive"
mongodump_command_normal="$mongodump_base_command -o $backup_dir_normal"


# Run the MongoDB dump commands and capture their exit statuses
$mongodump_command_archive
exit_status_archive=$?

$mongodump_command_normal
exit_status_normal=$?
send_message "MongoDB dump ran at $DateRn . Compressing the backup archives..."


# Compress the backup archives using 7z with lower priority
nice -n 19 7z a -mx=9 $backup_dir_main/${DateRn}_archive.7z $backup_dir_archive
send_message "MongoDB Archive mode dump compressed"
nice -n 19 7z a -mx=9 $backup_dir_main/${DateRn}_normal.7z $backup_dir_normal
send_message "MongoDB Normal mode dump compressed"

send_message "All MongoDB dumps compressed. Sending archives to telegram and deleting uncompressed..."

# Message for archive mode
if [ $exit_status_archive -eq 0 ]; then
    message_archive="MongoDB dump in archive mode created & sent on '$DateRn' successfully."

    # Send archive file via Telegram bot
    curl -s -X POST "https://api.telegram.org/bot$bot_token/sendDocument" -F chat_id="$chat_id" -F document=@"$backup_dir_main/${DateRn}_archive.7z" 

    # Remove temporary archive dir
    rm -r $backup_dir_archive
else
    message_archive="MongoDB dump in archive mode failed with exit status $exit_status_archive."
fi
send_message "$message_archive"

# Message for normal mode
if [ $exit_status_normal -eq 0 ]; then
    message_normal="MongoDB dump in normal mode created & sent on '$DateRn' successfully."

    # Send normal file via Telegram bot
    curl -s -X POST "https://api.telegram.org/bot$bot_token/sendDocument" -F chat_id="$chat_id" -F document=@"$backup_dir_main/${DateRn}_normal.7z" 

    # Remove temporary normal file
    rm -r $backup_dir_normal
else
    message_normal="MongoDB dump in normal mode failed with exit status $exit_status_normal."
fi
send_message "$message_normal"

# Cleanup old backups and archives (keep only last 10 days)
deleted_directories=$(find ./Backups/* -type d -ctime +10 -exec echo {} \;)
find ./Backups/* -type d -ctime +10 -exec rm -r {} \;


# Message for deleted directories
if [ ! -z "$deleted_directories" ]; then
    message_deleted="Deleted directories older than 10 days: $deleted_directories"
    # Send message about deleted directories via Telegram bot
    send_message "$message_deleted"
fi

# List existing directories
existing_directories=$(find ./Backups/* -type d -exec echo {} \;)

# Message for existing directories
if [ ! -z "$existing_directories" ]; then
    message_existing="Existing directories: $existing_directories"

    # Send message about existing directories via Telegram bot
    send_message "$message_existing"
fi

# Capture the end time
end_time=$(date +%s)

# Calculate the duration
duration=$((end_time - start_time))

# Send message about existing directories via Telegram bot
send_message "Cron job completed at $(date). Took: $duration seconds."