AWS Certified DevOps Engineer - Professional DOP-C02 — Topic 1 Question 293

Question

A DevOps engineer needs to configure a blue/green deployment for an existing three-tier application. The application runs on Amazon EC2 instances and uses an Amazon RDS database. The EC2 instances run behind an Application Load Balancer (ALB) and are in an Auto Scaling group. The DevOps engineer has created launch templates, Auto Scaling groups, and ALB target groups for the blue environment and the green environment. Each target group specifies which application version, blue or green, will be loaded on the EC2 instances. An Amazon Route 53 record for www.example.com points to the ALB. The deployment must shift traffic all at once from the blue environment to the green environment. Which solution will meet these requirements?

Accepted Answer

Correct answer: A. The correct answer is A. Option A: Starta rolling restart of the Auto Scaling group for the green environment to deploy the new application version to the green environment's EC2 instances. When the rolling restart is complete, use an AWS CLI command t... Auto Scaling adjusts capacity automatically to match demand, improving availability and cost efficiency. Amazon EC2 provides resizable virtual servers when you need full control of the operating system.

AWS Certified DevOps Engineer - Professional DOP-C02 — Question 293