Google Cloud Professional Cloud DevOps Engineer — Question 32

You support a production service that runs on a single Compute Engine instance. You regularly need to spend time on recreating the service by deleting the crashing instance and creating a new instance based on the relevant image. You want to reduce the time spent performing manual operations while following Site
Reliability Engineering principles. What should you do?

Answer options

• A. File a bug with the development team so they can find the root cause of the crashing instance.
• B. Create a Managed instance Group with a single instance and use health checks to determine the system status.
• C. Add a Load Balancer in front of the Compute Engine instance and use health checks to determine the system status.
• D. Create a Stackdriver Monitoring dashboard with SMS alerts to be able to start recreating the crashed instance promptly after it was crashed.

Correct answer: B

Explanation

The correct answer is B because creating a Managed instance Group allows for automated instance management, including health checks that can restart instances automatically when they fail. Option A does not address the immediate need for automation. Option C adds unnecessary complexity with a Load Balancer, and option D, while useful for alerts, still requires manual intervention to recreate the instance.