Google Cloud Professional Cloud Architect — Question 125

Your operations team has asked you to help diagnose a performance issue in a production application that runs on Compute Engine. The application is dropping requests that reach it when under heavy load. The process list for affected instances shows a single application process that is consuming all available CPU, and autoscaling has reached the upper limit of instances. There is no abnormal load on any other related systems, including the database. You want to allow production traffic to be served again as quickly as possible. Which action should you recommend?

Answer options

• A. Change the autoscaling metric to agent.googleapis.com/memory/percent_used.
• B. Restart the affected instances on a staggered schedule.
• C. SSH to each instance and restart the application process.
• D. Increase the maximum number of instances in the autoscaling group.

Correct answer: D

Explanation

The correct answer is D, as increasing the maximum number of instances in the autoscaling group allows for additional resources to handle the load, helping to restore service. Options A and C do not address the immediate need for more instances to manage traffic, while B may temporarily alleviate the problem but does not provide a long-term solution to the performance issue.