Upgrading EKS Clusters with Terraform

Upgrading a live Kubernetes cluster can feel like performing open-heart surgery on your infrastructure. This text-based course takes the anxiety out of the process by showing you how to orchestrate seamless AWS EKS upgrades using Terraform. You will transition from manual, risky infrastructure updates to automated, predictable cluster upgrades. You'll understand how to plan version transitions, manage node group migrations, and ensure your workloads remain fully operational throughout the upgrade cycle. What you'll learn: 1. Understand the foundational architecture of AWS EKS control planes and worker nodes. 2. Configure Terraform files to manage EKS version transitions systematically. 3. Implement rolling update strategies for managed node groups to prevent service interruption. 4. Update essential cluster add-ons and CoreDNS configurations safely. 5. Apply modern infrastructure-as-code practices to validate and test upgrade plans before execution. 6. Troubleshoot common upgrade issues and verify cluster health post-migration. Starting with core EKS and Terraform concepts, this course guides you step-by-step through the preparation, execution, and verification phases of a cluster upgrade. You will learn to manage dependencies and handle state files with confidence. This course is designed for beginner DevOps engineers, cloud administrators, and developers who have a basic understanding of Terraform and want to learn reliable upgrade workflows. No prior experience with complex cluster migrations is required. Start reading today to master the art of zero-downtime EKS cluster upgrades.