mongodb backuscript

 #Add the following line to run the backup daily at 2:00 AM:

0 2 * * * /home/sas/mongo_backup.sh

#!/bin/bash

# MongoDB Daily Backup Script

# Place in /home/sas/mongo_backup.sh and make executable

# ------------------------------

# CONFIGURATION

# ------------------------------

BACKUP_DIR="/usr/src/mongodb"                # Base backup directory

RETENTION_DAYS=7                             # Keep backups for 7 days

MONGODUMP_CMD="mongodump"                     # Path to mongodump (if not in $PATH)

LOG_FILE="/var/log/mongo_backup.log"          # Log file

TIMESTAMP=$(date +"%Y%m%d_%H%M%S")            # Timestamp for this backup

BACKUP_PATH="$BACKUP_DIR/$TIMESTAMP"          # Full backup path

# ------------------------------

# FUNCTIONS

# ------------------------------

log() {

    echo "$(date +"%Y-%m-%d %H:%M:%S") - $1" | tee -a "$LOG_FILE"

}

# ------------------------------

# MAIN SCRIPT

# ------------------------------

# Create backup directory if it doesn't exist

mkdir -p "$BACKUP_DIR"

log "Starting MongoDB backup to $BACKUP_PATH"

# Run mongodump

if $MONGODUMP_CMD --out "$BACKUP_PATH"; then

    log "mongodump succeeded. Compressing..."

    # Compress the backup

    tar -czf "$BACKUP_PATH.tar.gz" -C "$BACKUP_DIR" "$TIMESTAMP"

    if [ $? -eq 0 ]; then

        log "Compression successful."

        # Remove uncompressed directory

        rm -rf "$BACKUP_PATH"

        log "Uncompressed backup removed."

    else

        log "Compression failed. Keeping uncompressed backup."

    fi

else

    log "mongodump failed. Backup aborted."

    exit 1

fi

# Remove backups older than RETENTION_DAYS

log "Cleaning up backups older than $RETENTION_DAYS days"

find "$BACKUP_DIR" -name "*.tar.gz" -type f -mtime +$RETENTION_DAYS -exec rm {} \;

find "$BACKUP_DIR" -type d -mtime +$RETENTION_DAYS -exec rm -rf {} \; 2>/dev/null

log "Backup process completed."