🧰 Automated Backup to S3 using Bash Script

This project automates backing up a local directory using Bash. It compresses the directory, stores the archive locally, uploads it to an AWS S3 bucket, and uses cron to automate the process every 2 minutes. All steps are documented with screenshots.

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🖼 Project Overview

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🧱 Project Architecture

The following diagram shows the structure and flow of the backup process, including local compression, S3 upload, and automation using cron.

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📁 Project Structure

. ├── scripts/ │ ├── backup-local.sh │ ├── backup-to-s3.sh ├── screenshots/ │ ├── 01-first-script.png │ ├── ... ├── Project Architecture/ │ ├── project-cover.png │ ├── project-diagram.png ├── README.md

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🧾 Script 1: Local Backup Script

A basic Bash script to compress a local directory into a .tar.gz archive.

🔹 Testing the Script

• Run without argument (error)
• Run with valid directory: creates archive and log file

🔹 Archive content after backup

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🔐 AWS Configuration

Create IAM user with S3FullAccess

Create IAM Role with S3 & SSM FullAccess

Attach IAM Role to EC2 Instance

Install AWS CLI on EC2

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☁ S3 Bucket Setup

Check: No buckets exist

Create S3 bucket via AWS CLI

bash aws s3 mb s3://your-bucket-name

Confirm bucket created in Console

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🚀 Script 2: Backup + Upload to S3

A Bash script that compresses the folder and uploads the archive to S3.

🔹 First manual run

🔹 S3 Console confirms upload

🔹 Local backup folder check

🔹 Final archive contents

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⏱ Automate with Cron

Add cronjob in /etc/crontab

bash */2 * * * * ec2-user /home/ec2-user/scripts/backup-to-s3.sh

First test – wait 2 minutes

S3 check after auto backup

Confirm backup continues every 2 minutes

Log file after auto backups

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📦 Final S3 and Archive Checks

S3 Bucket Final Content

Archive after modifying source dir

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🧹 Cleanup

Delete bucket using CLI

bash aws s3 rb s3://your-bucket-name --force

Confirm deletion in console

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📌 Notes

• Tested on Amazon Linux EC2 with AWS CLI v2
• Make sure the IAM Role has correct permissions
• Cronjob runs every 2 minutes (customizable)
• All logs saved to backup.log

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👤 Author

Ahmed Sayed
LinkedIn
GitHub

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📜 License

This project is licensed under the MIT License - see the LICENSE file for details.