Deploy the autoscaler
step1
kubectl apply -f https://raw.githubusercontent.com/kubernetes/autoscaler/master/cluster-autoscaler/cloudprovider/aws/examples/cluster-autoscaler-autodiscover.yaml
step2
kubectl -n kube-system annotate deployment.apps/cluster-autoscaler cluster-autoscaler.kubernetes.io/safe-to-evict="false"
step3
set your EKS cluster name at the end of property - --node-group-auto-discovery=asg:tag=k8s.io/cluster-autoscaler/enabled,k8s.io/cluster-autoscaler/<<EKS cluster name>>
set the image version at property image: asia.gcr.io/k8s-artifacts-prod/autoscaling/cluster-autoscaler:v1.18.1
see logs
kubectl -n kube-system logs deployment.apps/cluster-autoscaler
IAM-Policy for worker-nodes Auto scaling
IAM -> policies -> Create policy
attach policy in role of worker node for auto scaling
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