148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 13 ■ Using Autoscaling
Figure 13-14. CPU Utilization is at 0%
Increasing Load
Next, we shall demonstrate what increasing load on the deployment does to the number of pods and CPU
utilization. Run the following command by substituting the LoadBalancer Ingress to put some load on the
deployment:
curl <LoadBalancer Ingress>
In another terminal, get the HPA. The number of pods is listed as 3 because the CPU utilization at 22% is
below the target CPU Utilization of 100%, as shown in Figure 13-15.
Figure 13-15. CPU utilization increases to 22%
Run the following command loop by substituting the LoadBalancer Ingress to put more load on the
deployment:
while true; do curl <loadbalancer ingress>; done
Invoking the service in a loop outputs the same message repeatedly, as shown in Figure 13-16.
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