Google Cloud Professional Cloud Architect — Question 57

You have created several pre-emptible Linux virtual machine instances using Google Compute Engine. You want to properly shut down your application before the virtual machines are preempted.
What should you do?

Answer options

• A. Create a shutdown script named k99.shutdown in the /etc/rc.6.d/ directory
• B. Create a shutdown script registered as a xinetd service in Linux and configure a Stackdriver endpoint check to call the service
• C. Create a shutdown script and use it as the value for a new metadata entry with the key shutdown-script in the Cloud Platform Console when you create the new virtual machine instance
• D. Create a shutdown script, registered as a xinetd service in Linux, and use the gcloud compute instances add-metadata command to specify the service URL as the value for a new metadata entry with the key shutdown-script-url

Correct answer: C

Explanation

The correct answer is C because Google Compute Engine allows you to specify a shutdown script through a metadata entry during the VM instance creation. Option A is incorrect as it does not associate the script with the VM's shutdown process. Option B does not utilize the proper method for shutting down VMs, and option D wrongly suggests using a service URL, which is not necessary for this use case.