To monitor the progress of a deployment rollout in Kubernetes, which kubectl command should you use?

• A. kubectl rollout status deployment/<deployment-name>
• B. kubectl apply -f deployment.yaml
• C. kubectl get pods
• D. kubectl describe deployment

Answer: (A)

Monitoring a Deployment’s rollout progress is best done with the rollout status command for that Deployment. It watches the rollout and reports real-time progress, showing how many replicas have been updated, how many are available, and when the rollout completes. You can let it run until the update finishes (or times out if you set a timeout), which gives you a precise picture of the rollout lifecycle.

Other options don’t provide the same ongoing progress view. Applying a manifest updates the configuration but doesn’t report how far the rollout has progressed. Getting pods shows the current pod objects, but it doesn’t indicate how far the deployment is from completion. Describing the deployment reveals status fields like updatedReplicas and availableReplicas, which are useful for a snapshot, but it isn’t a live, continuous monitor of the rollout progresso.