Google Professional Cloud DevOps Engineer Question 230
Select 3Google Cloud PlatformYour team is responsible for managing the lifecycle of a critical microservice running on Google Kubernetes Engine (GKE). The service is undergoing a major version upgrade, and you need to minimize downtime while ensuring a smooth rollout. Which of the following actions should you take as part of lifecycle management to ensure the upgrade is successful?
- A
Use a canary deployment strategy to release the new version to a small subset of users first.
- B
Perform the upgrade during peak traffic hours to monitor real-world performance under load.
- C
Set up health checks and configure readiness and liveness probes for the new version.
- D
Rollback to the previous version immediately without analyzing error metrics if issues occur.
- E
Update the service documentation and communicate downtime or changes to stakeholders.
Show answer and explanation
Correct answers: A, C, E
Explanation
Effective service lifecycle management during an upgrade involves careful planning and execution to minimize risk and impact to users. Using strategies like canary deployments, setting up health checks, and ensuring proper communication with stakeholders are essential steps. Performing upgrades during peak traffic hours or rolling back without analysis can lead to increased risks and operational inefficiencies.
- A. Correct.
Using a canary deployment strategy allows you to release the new version to a small set of users first. This minimizes risk and provides the opportunity to detect and resolve issues before a full rollout.
- B. Incorrect.
Performing the upgrade during peak traffic hours increases the risk of user impact and makes it harder to isolate performance issues. Upgrades should typically be done during low-traffic periods.
- C. Correct.
Health checks and readiness/liveness probes ensure that Kubernetes can automatically route traffic to healthy pods and restart unhealthy ones. This is critical for managing application stability during an upgrade.
- D. Incorrect.
Rolling back immediately without analyzing error metrics is not a best practice. You should first investigate the cause of the issue to determine whether a rollback is necessary or if the issue can be resolved in the current version.
- E. Correct.
Updating the service documentation and communicating with stakeholders ensures everyone is informed about the changes and any potential downtime, which is critical for operational transparency.