What is a blue-green deployment AWS?

Question

What is a blue-green deployment AWS? how to do in aws?

Mahesh Chand · Answer

A blue-green deployment is a deployment strategy on AWS that uses two identical environments, typically named blue and green, to minimize downtime and risk during application updates. Here's a breakdown of the process: Environments: You have two environments: Blue: This is your production environment running the current version of your application serving live traffic. Green: This is a staging environment initially identical to the blue environment. Deployment: You deploy the new application version to the green environment. Testing: Once deployed, you thoroughly test the new version in the green environment to identify and fix any issues. Traffic Shift: If testing is successful, you shift traffic from the blue environment to the green environment. This can be done through various methods like DNS routing. Verification: After all traffic is directed to the green environment, you can monitor its performance and verify its stability. Rollback (Optional): If any problems arise with the new version, you can easily rollback by switching traffic back to the blue environment since it remains untouched. Cleanup (Optional): Once you're confident in the new version, you can decommission the blue environment to optimize costs. Benefits of blue-green deployments on AWS include: Near zero downtime: By shifting traffic, you can minimize downtime for end-users during deployments. Reduced risk: Testing in a separate environment allows you to identify and fix problems before impacting production. Rollback simplicity: If necessary, rolling back to the previous version is straightforward. Cost optimization: You can potentially optimize resource allocation based on the application's performance needs in the new version. Here are some AWS services that support blue-green deployments: AWS Elastic Beanstalk AWS OpsWorks AWS CloudFormation AWS CodeDeploy Amazon ECS For a more in-depth look at blue-green deployments on AWS, you can refer to the official documentation: https://docs.aws.amazon.com/whitepapers/latest/blue-green-deployments/welcome.html