hello-ecs-blue-green-deployment

Warning: not yet working

https://aws.amazon.com/blogs/aws/accelerate-safe-software-releases-with-new-built-in-blue-green-deployments-in-amazon-ecs/

https://github.com/aws-samples/sample-amazon-ecs-blue-green-deployment-patterns/blob/main/ecs-bluegreen-lifecycle-hooks/README.md

Notes

• No UI button "Green looks good, proceed"
  • instead all API driven with lambda lifecycle hooks
    • could set up custom trigger via SSM Parameter or S3 object - TODO

Observations

• bake time 0
• Initial state

curl http://hello-ecs-blue-green-whoami-56199301.us-east-1.elb.amazonaws.com
Name: Standard Deployment

• Update service task definition - results in two tasks running

curl http://hello-ecs-blue-green-whoami-56199301.us-east-1.elb.amazonaws.com
Name: Standard Deployment

...

curl -H 'X-Blue-Green: Test' http://hello-ecs-blue-green-whoami-56199301.us-east-1.elb.amazonaws.com
Name: New Deployment

• couple minutes later, both curls go to same "New Deployment" with 1 task running
  • Both Listener Rules modified so they have 100% traffic goign to "green" (new)