Google Cloud Professional Cloud Architect — Question 54

You have an application deployed on Google Kubernetes Engine using a Deployment named echo-deployment. The deployment is exposed using a Service called echo-service. You need to perform an update to the application with minimal downtime to the application. What should you do?

Answer options

• A. Use kubectl set image deployment/echo-deployment <new-image>
• B. Use the rolling update functionality of the Instance Group behind the Kubernetes cluster
• C. Update the deployment yaml file with the new container image. Use kubectl delete deployment/echo-deployment and kubectl create ג€"f <yaml-file>
• D. Update the service yaml file which the new container image. Use kubectl delete service/echo-service and kubectl create ג€"f <yaml-file>

Correct answer: A

Explanation

The correct answer is A because using 'kubectl set image' allows for a seamless update of the container image in the deployment, leveraging Kubernetes' rolling update strategy. Option B is incorrect as it pertains to Instance Groups, which are not directly involved in updating a Kubernetes Deployment. Options C and D involve deleting and recreating resources, which leads to downtime and is not the most efficient method for updating an application.