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🌟 DevOps Projects with Ansible & AWS

This repository brings together five end-to-end automation projects using Ansible, AWS EC2, SSH, Docker, and Vault. Each project demonstrates a real-world use case in cloud automation.

🔑 1. Control Node → Managed Node via SSH Keys

Goal: Establish secure, passwordless SSH-based communication between your Control Node (Laptop) and a Managed Node (Ubuntu EC2).

Key Highlights:

• Setup of ~/.ssh with correct permissions
• Usage of AWS .pem key for initial access
• Generation of SSH key pair (id_rsa, id_rsa.pub)
• Public key copied to EC2 → enabled passwordless login
• Outcome: Future-ready authentication for Ansible automation

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🌐 2. Install Apache & Deploy Custom Web Page (Ansible)

Goal: Automate web server setup with Ansible.

Key Highlights:

• Inventory setup (inventory.ini) with EC2 public IP
• Playbook installs & enables Apache2
• Deploys a custom index.html to /var/www/html
• Ensures idempotency → safe re-runs without reconfiguration
• Outcome: Fully automated deployment of a working Apache-hosted website

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🐳 3. Install Docker on Ubuntu EC2 (Ansible Role)

Goal: Automate Docker installation using a community Ansible Galaxy role.

Key Highlights:

• Inventory points to EC2 host with SSH key
• Playbook applies bsmeding.docker role
• Installs Docker engine & dependencies
• Adds ubuntu user to docker group → run containers without sudo
• Verification: docker run hello-world successful
• Outcome: Ready-to-use Docker-enabled EC2 instance

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☁️ 4. Create EC2 Instance with Roles + Vault

Goal: Automate provisioning of a new EC2 instance with Ansible Roles and Vault-encrypted AWS credentials.

Key Highlights:

• Structured roles-based project for clean reusability
• AWS keys stored securely in group_vars/all/pass.yml (encrypted with Vault)
• ec2_create.yaml playbook provisions a t2.micro EC2 with public IP
• Vault password stored in vault.pass (excluded from Git)
• Outcome: Secure, role-driven, automated EC2 creation workflow

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⚡ 5. Multiple EC2 Creation with Roles + Vault

Goal: Scale cloud provisioning by automating the creation of multiple EC2 instances with one playbook.

Key Highlights:

• Role structure extended to support ec2_count variable
• Defaults define region, AMI, instance type, tags, etc.
• Loop in main.yml creates multiple EC2s (ec2_count: 3 → 3 instances)
• AWS keys encrypted with Vault for security
• Outcome: Scalable infrastructure automation → launch 1 or 100 servers with just a config change

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🏆 Final Outcomes

By completing these projects, you have:

✅ Mastered SSH key-based authentication for secure automation

✅ Automated web server deployment with Ansible

✅ Installed & verified Docker on EC2 using roles

✅ Learned secure AWS key management with Vault

✅ Scaled automation to handle multiple EC2 instances seamlessly

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