AWS DevOps Engineer - Professional

By Amazon · Question Mode

QuestionQ49

Resilient Cloud Solutions

A company runs a mission-critical application on AWS that uses automatic scaling. The company requires the deployment lifecycle to meet these parameters:

  • The application must be deployed to one instance at a time so that the remaining fleet can continue serving traffic.
  • The application is CPU-intensive and must be monitored closely.
  • The deployment must automatically roll back when CPU utilization on the deployment instance exceeds 85%.

Which solution meets these requirements?

Explanation

AWS CodeDeploy can deploy to an Amazon EC2 Auto Scaling group using CodeDeployDefault.OneAtATime, which updates only one instance at a time. A CloudWatch CPU utilization alarm can be associated with the deployment group, and CodeDeploy automatic rollback can redeploy the last known good revision when the alarm threshold is breached.

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