Deploying an AWS EKS Cluster Using Terraform: A Step-by-Step Guide
Jenkins
Source: Dev.to | Jan 15, 2026 (UTC)
Introduction
In today’s cloud-native landscape, Kubernetes has become the de facto standard for container orchestration, and Amazon Elastic Kubernetes Service (EKS) provides a managed Kubernetes service that simplifies cluster management. When combined with Terraform, HashiCorp’s Infrastructure as Code (IaC) tool, you can achieve reproducible, version-controlled, and automated Kubernetes infrastructure deployment.
This comprehensive guide will walk you through deploying a production-ready AWS EKS cluster using Terraform, covering everything from initial setup to operational best practices.
Prerequisites
Before beginning, ensure you have the following:
AWS Account with appropriate IAM permissions
AWS CLI installed and configured
Terraform (v1.0+) installed
kubectl for Kubernetes cluster interaction
Basic understanding of AWS services, Kubernetes, and Terraform
Architecture Overview
Our deployment will create:
A VPC with public and private subnets across multiple Availability Zones
EKS control plane managed by AWS
Managed node groups for worker nodes
Necessary IAM roles and security groups
Network components (NAT Gateway, Internet Gateway, Route Tables)
Efficient EKS Cluster Provisioning with Terraform’s Modular Design
This implementation employs a Terraform module containing pre-defined configurations to simplify Amazon EKS cluster creation, demonstrating infrastructure-as-code efficiency.
Step 1: Prepare Your Environment – Install Terraform
Begin by installing Terraform locally to set up your development environment.
brew install terraform
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Secondly, install the AWS CLI:
brew install awscli
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Thirdly, install kubectl:
brew install kubernetes-cli
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For installation on other operating systems, see the official documentation:
Step 4: Apply Terraform Configuration Begin by initializing Terraform to download dependencies, then apply the configuration to create your EKS cluster infrastructure.
terraform init
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Post-initialization, generate a plan to review infrastructure changes.
terraform plan
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Wait a few minutes for all resources to be created.
Step 5 – Configure kubectl Access
Run the following command:
aws eks --region us-east-1 update-kubeconfig --name example
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At this point, verify that the login to the cluster was successful.
kubectl config current-context
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Step 6 – Manage the Cluster
Use the following command to view all nodes in the cluster:
kubectl get nodes
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To validate the cluster, deploy an NGINX instance.
kubectl run --port 80 --image nginx nginx
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To see its status:
kubectl get pods
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Now, establish a tunnel from your local environment to the pod.
kubectl port-forward nginx 3000:80
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Step 7 – Resource Cleanup
To destroy the resources created in this session, execute the following command:
terraform destroy
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Ensure to destroy the created resources to avoid incurring huge financial bills from AWS.
Conclusion
By completing this guide, you’ve established a production-ready AWS EKS cluster deployment using Terraform’s infrastructure-as-code approach. This foundation enables consistent, version-controlled Kubernetes infrastructure management across all environments.
Chidubem Chinwuba is a dedicated Cloud/DevOps Engineer. He possesses a deep passion for technology and its transformative potential across industries. Overall, Chidubem is driven by his passion for technology and his aspiration to make a meaningful impact in the Cloud/DevOps domain. He is excited to continue his professional growth and contribute to projects that shape the future of technology.
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