WordPress High Availability Setup on AWS

This repository contains Terraform scripts to set up a highly available and scalable WordPress application on AWS. The architecture leverages various AWS services, including VPC, EC2, RDS, ALB, and Auto Scaling Group, to ensure fault tolerance, security, and performance.

Architecture Overview

Components

• AWS Region: US East 1
• VPC: 10.0.0.0/16
• Public Subnets:
  • 10.0.100.0/24 (AZ: US East 1a)
  • 10.0.101.0/24 (AZ: US East 1b)
• Private Subnets:
  • 10.0.4.0/24 (AZ: US East 1a)
  • 10.0.8.0/24 (AZ: US East 1b)
• Internet Gateway: Provides internet access to public subnets.
• Application Load Balancer (ALB): Distributes incoming traffic across multiple WordPress instances.
• Auto Scaling Group (ASG): Ensures high availability and scalability of WordPress instances.
• WordPress Instances: Deployed in public subnets, managed by ASG.
• RDS (MySQL): Deployed in private subnets for secure database management.
• Security Groups:
  • Web Security Group: Applied to WordPress instances.
  • Database Security Group: Applied to RDS instance.
• Route Tables:
  • Public Route Tables: Associated with public subnets.
  • Private Route Tables: Associated with private subnets.

Prerequisites

• AWS Account
• Terraform installed on your local machine
• AWS CLI configured with necessary permissions

Getting Started

Clone the Repository

git clone https://github.com/ssram4298/terraform-wordpress.git
cd terraform-wordpress

Configure AWS Credentials

Ensure your AWS CLI is configured with the necessary credentials:

aws configure

Customize Variables

Edit the variables.tf file to customize the configuration according to your requirements:

variable "region" {
  description = "AWS Region"
  default     = "us-east-1"
}

variable "vpc_cidr" {
  description = "VPC CIDR"
  default     = "10.0.0.0/16"
}

variable "public_subnets" {
  description = "Public Subnets CIDRs"
  default     = ["10.0.100.0/24", "10.0.101.0/24"]
}

variable "private_subnets" {
  description = "Private Subnets CIDRs"
  default     = ["10.0.4.0/24", "10.0.8.0/24"]
}

# Add other variables as necessary

Initialize Terraform

Initialize the Terraform working directory:

terraform init

Apply the Configuration

Review the execution plan and apply the configuration:

terraform plan
terraform apply

Access Your Application

After the Terraform script completes, you can access your WordPress application using the DNS name provided by the ALB.

Cleanup

To destroy the resources created by Terraform, run:

terraform destroy

Contributing

Contributions are welcome! Please fork the repository and create a pull request.

License

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

Acknowledgements

• Inspired by the amazing blog post of Alok Trivedi - https://medium.com/@aaloktrivedi/creating-a-ci-cd-pipeline-with-terraform-cloud-to-deploy-wordpress-application-infrastructure-part-8f1cb9f4f022
• Thanks to the Terraform community for their valuable contributions.

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