AWS EKS Blue/Green Deployment with Best Practices

Challenge: The client faced the challenge of maintaining highly available infrastructure for their critical APIs used across various airports; the goal was to ensure seamless upgrades while maintaining operational excellence for airline check-in/checkout APIs.

Solution: AWS Blue/Green strategy, coupled with Terraform EKS addons module and IaC practices, has been used for it. The implementation utilized the Amazon EKS Blueprint for Terraform, facilitating the creation of two clusters (eks-blue and eks-green) within the same VPC. These clusters leverage the AWS Load Balancer Controller and External-DNS add-ons for seamless application exposure. The Amazon EKS Blueprint automates cluster creation and addons installation.

Outcomes: The process was completed with Zero downtime. Live traffic was seamlessly redirected to the updated new environment with near-zero disruptions.?

For a more detailed read, check our Medium Article.

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