Kubernetes and Cloud Native Associate (KCNA) — Question 127

Which mechanism can be used to automatically adjust the amount of resources for an application?

Answer options

• A. Horizontal Pod Autoscaler (HPA)
• B. Kubernetes Event-driven Autoscaling (KEDA)
• C. Cluster Autoscaler
• D. Vertical Pod Autoscaler (VPA)

Correct answer: D

Explanation

The Vertical Pod Autoscaler (VPA) is designed to automatically adjust the resource requests and limits for containers in a pod based on their usage. The Horizontal Pod Autoscaler (HPA) scales the number of pods, KEDA focuses on event-driven scaling, and the Cluster Autoscaler adjusts the number of nodes, but none of these modify the resources allocated to individual pods.