Cluster Autoscaler Guide

Use cluster-autoscaler Please look at cluster-api first.

Install with helm

We will use kubeconfig-incluster mode

helm install --set 'autoDiscovery.clusterName=hello-osc' --set 'cloudProvider=clusterapi' --set 'clusterAPIKubeconfigSecret=hello-osc-kubeconfig' --set 'clusterAPIMode=kubeconfig-incluster' 

hello-osc is the clusterName hello-osc-kubeconfig is the generated workload kubeconfig

Add Labels

You need to have at least this annotations in each machineDeployment:

  annotations:
    cluster.x-k8s.io/cluster-api-autoscaler-node-group-max-size: "5"
    cluster.x-k8s.io/cluster-api-autoscaler-node-group-min-size: "0"