Verify that your horizontal pod autoscaler scales up your Kubernetes deployment on increased CPU usage.

Motivation

Important deployments should be scaled up within a reasonable time for an elastic and resilient cloud infrastructure. Undetected high CPU spikes and long startup times are undesirable in these infrastructures.

Structure

First, we ensure that all pods are ready to serve traffic. Afterward, we inject high CPU usage into the pods' container and expect that within a reasonable amount of time, the horizontal pod auto scaler will increase the number of pods and become ready to handle incoming traffic.