AWS Certified DevOps Engineer – Professional (DOP-C02) — Question 216

A DevOps engineer manages a company's Amazon Elastic Container Service (Amazon ECS) cluster. The cluster runs on several Amazon EC2 instances that are in an Auto Scaling group. The DevOps engineer must implement a solution that logs and reviews all stopped tasks for errors.

Which solution will meet these requirements?

Answer options

• A. Create an Amazon EventBridge rule to capture task state changes. Send the event to Amazon CloudWatch Logs. Use CloudWatch Logs Insights to investigate stopped tasks.
• B. Configure tasks to write log data in the embedded metric format. Store the logs in Amazon CloudWatch Logs. Monitor the ContainerInstanceCount metric for changes.
• C. Configure the EC2 instances to store logs in Amazon CloudWatch Logs. Create a CloudWatch Contributor Insights rule that uses the EC2 instance log data. Use the Contributor Insights rule to investigate stopped tasks.
• D. Configure an EC2 Auto Scaling lifecycle hook for the EC2_INSTANCE_TERMINATING scale-in event. Write the SystemEventLog file to Amazon S3. Use Amazon Athena to query the log file for errors.

Correct answer: A

Explanation

Option A is correct as it directly addresses the need to log and review stopped tasks by utilizing Amazon EventBridge and CloudWatch Logs Insights. Options B and C do not specifically capture task state changes, which is crucial for identifying errors in stopped tasks. Option D is focused on EC2 instance termination logs rather than the specific ECS tasks that have stopped.