EC2 to S3 IAM Role Integration

Secure, secret-less AWS service communication using IAM Roles.

🎯 Objective

This project demonstrates the best practice for granting an EC2 instance access to an S3 bucket without using hardcoded credentials, leveraging IAM instance profiles.

🚀 Key Features

• IAM Instance Profiles: Attach permissions directly to compute resources.
• Apache Setup: Basic web server configuration on the EC2 instance.
• AWS CLI Usage: Practical examples of interacting with S3 from the command line.

🏗️ Architecture

flowchart LR
  EC2["EC2 Instance (Apache)"] -->|Assume Role| Role["IAM Role"]
  Role -->|Permit Access| S3["S3 Bucket"]

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📁 Project Structure

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├── index.html      # Sample web content
├── screenshots/    # Visual guide for IAM and instance setup
└── README.md       # Project documentation

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🛠️ Tech Stack

• Cloud: AWS (EC2, S3, IAM)
• Web Server: Apache (HTTPD)
• Tooling: AWS CLI

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🔧 Setup & Steps

1. Launch EC2 Instance

Configure a basic EC2 instance (Amazon Linux 2023).

2. Connect & Install Apache

SSH into the instance and install the web server.

3. Start Web Service

Verify the web server is reachable via the public IP.

4. Configure IAM Role

Create an IAM Role with S3ReadOnlyAccess policy.

5. Attach Role to EC2

Attach the created IAM instance profile to your running EC2 instance.

✅ Verification

Use the AWS CLI on the instance to list files from S3 without providing manual keys.

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Created by Tunahan Koç | LinkedIn | GitHub