battini05/terraform-vpc-alb-asg

AWS

Building a Highly Resilient VPC Architecture on AWS

Using Terraform tool for IaC

Building a Highly Resilient VPC for Production Workloads

Introduction:

In this project, I will take you on a journey through the process of designing and implementing a highly resilient VPC (Virtual Private Cloud) architecture on AWS (Amazon Web Services). Leveraging the power of modern infrastructure-as-code (IaC) tools like Terraform, we achieved a scalable, secure, and robust infrastructure to support production workloads. Let's dive into the details!

Overview:

Our goal is to design a VPC that ensures resiliency and fault tolerance by deploying resources across multiple Availability Zones (AZs). We'll utilize public and private subnets, NAT gateways, and an Application Load Balancer to optimize network traffic and enhance the performance of our application.

Step 1: Create the VPC:

We'll start by setting up the VPC infrastructure. This involves creating public and private subnets across two AZs. The public subnets will house the load balancer nodes, while the private subnets will host the actual application servers. We'll also configure NAT gateways to allow the servers in private subnets to access the internet securely.

Creating the VPC involves defining the subnets, setting up NAT gateways for internet access, and configuring security groups to enforce network security policies. This ensures that our application servers in the private subnets are shielded from direct internet exposure while still being able to securely communicate with the outside world.

Step 2: Deploy Your Application:

Once the VPC is in place, we'll proceed to deploy our application. This will involve setting up an Auto Scaling group, which automatically scales the number of application servers based on the incoming traffic. The Auto Scaling group ensures that our application is highly available and can handle increased load efficiently.

Deploying our application with Auto Scaling groups enables us to dynamically adjust the number of instances based on demand. This ensures that our application can handle traffic spikes and provides a seamless experience to our users. The Application Load Balancer plays a crucial role in distributing incoming traffic evenly across our application servers, optimizing performance and reliability.

Step 3: Test Your Configuration:

After the deployment, it's crucial to thoroughly test our configuration. We'll verify that the load balancer distributes traffic evenly across the application servers in different AZs. Proper resource management and clean-up are also vital considerations. By following best practices, such as terminating unused resources and deleting unnecessary components, we can optimize costs and maintain a well-organized and manageable AWS environment.

Step 4: Clean Up:

Finally, cleaning up the resources once they are no longer needed. Proper resource management is essential to optimize costs and maintain a clean and manageable AWS environment.

terraform destroy

Conclusion:

Building a highly resilient VPC architecture for production workloads is crucial for ensuring the availability and scalability of our applications. By leveraging features like Auto Scaling groups, Application Load Balancers, and private subnets, we can achieve robustness and security in our infrastructure. Implementing these best practices enables us to deliver a seamless experience to our users while maintaining the flexibility to scale as demand grows.

Building a resilient VPC for production workloads is an exciting journey that requires careful planning, implementation, and ongoing monitoring. By following industry best practices and leveraging the flexibility and scalability of AWS, you can create a robust infrastructure that sets the stage for your application's success.

Contribute

Contributions are welcome! If you encounter any issues or have suggestions for improvements, please feel free to open an issue or submit a pull request.

Acknowledgements

VPC with servers in private subnets and NAT: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-example-private-subnets-nat.html

Abhishek Veeramalla!