ECS Cluster for Varnish Docker using Terraform

This Terraform project allows you to create an ECS (Elastic Container Service) cluster on AWS and deploy Varnish, an HTTP accelerator, as a Docker container in the cluster. Varnish acts as a caching reverse proxy, improving the performance and scalability of web applications.

Table of Contents

• Features
• Prerequisites
• Getting Started
• Usage
• Customization
• Contributing
• License

Features

• Easy setup of an ECS cluster with Varnish caching for your web applications.
• Utilizes the power of Terraform for infrastructure-as-code provisioning.
• Automated deployment with the ability to scale the number of Varnish containers based on demand.
• Built-in support for integrating the ECS cluster with an Application Load Balancer (ALB).

Prerequisites

Before you begin, make sure you have the following prerequisites:

• Terraform v1.0.0 or later: Make sure you have Terraform installed on your system.
• AWS Account: You need an AWS account with appropriate permissions to create resources.
• AWS CLI: Configure the AWS CLI with appropriate credentials to authenticate Terraform with AWS.

Getting Started

Follow these steps to set up an ECS cluster with Varnish caching:

1. Clone the repository:

git clone https://github.com/heydarireza/terraform-ecs.git
cd terraform-ecs

2. Initialize Terraform:

terraform init

3. Customize the configuration:

   • Review and modify the variables in variables.tf to match your application's requirements.
   • Adjust any other settings in the Terraform files as needed.
   • Add these secrets (AWS_ACCESS_KEY_ID & AWS_SECRET_ACCESS_KEY)

4. Deploy the infrastructure:

terraform apply

5. After the deployment is complete, Terraform will output the URL for the Varnish endpoint.

6. Integrate Varnish with your web application by directing traffic to the Varnish endpoint.

Usage

The Terraform configuration in this project sets up the ECS cluster, provisions the required AWS resources, and deploys the Varnish Docker container. The Varnish container will be fronted by an ALB for distributing traffic.

The Varnish configuration is provided as part of the Docker image. You can customize the Varnish configuration by updating the Docker image or mounting custom VCL (Varnish Configuration Language) files.

Customization

To further customize the setup, you can:

• Update the Varnish Docker image to use a different VCL configuration.
• Modify the ECS cluster capacity settings in variables.tf to scale according to your needs.
• Integrate with your specific web application backend by configuring the ALB listeners and target groups.

Please refer to the Terraform documentation and Varnish Docker documentation for more details on customization.

Contributing

Contributions are welcome! If you find any issues or want to enhance the project, feel free to submit a pull request. For major changes, please open an issue to discuss your proposed changes.

License

This project is licensed under the Apache-2 License - see the LICENSE file for details.