Question

Your team runs a stateless REST API as a Deployment on a GKE Standard cluster. Traffic varies significantly throughout the day, and you want the number of pod replicas to increase automatically when average CPU utilization across pods rises above 60%, then scale back down during quiet periods. Which action should you take?

Accepted Answer

Configure a Horizontal Pod Autoscaler targeting the Deployment with a target CPU utilization of 60%.

Answer

Enable cluster autoscaler on the node pool with a minimum and maximum node count.

Answer

Configure a Vertical Pod Autoscaler in Auto mode for the Deployment.

Answer

Create a managed instance group with an autoscaling policy based on 60% CPU utilization.