Google Cloud DevOps Certification Practice Test

In a CI/CD pipeline, what is essential to do after changing an instance template in a managed instance group?

Directly modify the existing instance template without further action.

Regression test the application before updating the instance template.

Ensure the pipeline cleans up the old instance template before creating a new one.

Use lifecycle management strategies to maintain application availability.

In a CI/CD pipeline, maintaining application availability is crucial, especially after changing an instance template in a managed instance group. Using lifecycle management strategies ensures that updates to the instance are deployed smoothly, minimizing downtime and maintaining service continuity.

These strategies may include rolling updates, which allow instances to be replaced gradually while ensuring that a certain number of instances remain up and running. This prevents disruptions to users and services during updates. Implementing lifecycle management practices also helps in controlling the update process, ensuring that any issues can be detected early without impacting the overall application performance.

Other options focus on actions that do not directly address the ongoing availability of the service or introduce unnecessary risks. While adjusting instance templates and performing tests are important aspects of a CI/CD pipeline, they do not inherently incorporate strategies aimed at sustaining application availability during the update process.

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