Configure Horizontal Pod AutoScaler (HPA)

Deploy the Metrics Server

Metrics Server is a cluster-wide aggregator of resource usage data. These metrics will drive the scaling behavior of the deployments. We will deploy the metrics server using Helm configured in a previous module

helm install stable/metrics-server \
    --name metrics-server \
    --version 2.0.4 \
    --namespace metrics

Confirm the Metrics API is available.

Return to the terminal in the Cloud9 Environment

kubectl get apiservice -o yaml

If all is well, you should see a status message similar to the one below in the response

  - lastTransitionTime: 2018-10-15T15:13:13Z
    message: all checks passed
    reason: Passed
    status: "True"
    type: Available

We are now ready to scale a deployed application