You are using AWS CodeDeploy for upgrading a web application on an EC2 Instance using blue/green deployment. DevOps Lead is concerned about scripting in each of the hooks section in an AppSpec file. Which of the following events can be scripted while creating run order of hooks in a blue/green deployment?

Answer options:

A.DownloadBundle
B.BlockTraffic
C.ApplicationStart
D.AllowTraffic

Correct Answer – C
 While creating events hooks for Blue/Green Deployment, the following events can have scripted files
ApplicationStop
BeforeInstall
AfterInstall
ApplicationStart
ValidateService
BeforeAllowTraffic
AfterAllowTraffic
BeforeBlockTraffic
AfterBlockTraffic.
Options A, B & D are incorrect as DownloadBundle, BlockTraffic & AllowTraffic cannot be scripted.
For more information on Run Order of Hooks for Blue/Green Deployment, refer to the following URL,
https://docs.amazonaws.cn/en_us/codedeploy/latest/userguide/reference-appspec-file-structure-hooks.html