sushmainfy/cluster-autoscaler

cluster-autoscaler

Pre-Requisites

- EKS-Cluster Setup

Clone the cluster autoscaler code

git clone https://github.com/Naresh240/cluster-autoscaler.git
cd cluster-autoscaler

Install cluster autoscaler

kubectl apply -f service-account.yml
kubectl apply -f cluster-autoscaler-deployment.yml

Check cluster autoscaler pod

kubectl get pod -n kube-system

Deploy "ngix" application

kubectl apply -f deployment.yml

Cluster Scale UP: Scale our application to 30 pods

kubectl scale --replicas=30 deploy ca-demo-deployment

Terminal - 2: Verify nodes

kubectl get nodes -o wide

Cluster Scale DOWN: Scale our application to 1 pod

Terminal - 1: Keep monitoring cluster autoscaler logs

kubectl -n kube-system logs -f deployment.apps/cluster-autoscaler

Terminal - 2: Scale down the demo application to 1 pod

kubectl scale --replicas=1 deploy ca-demo-deployment 

Terminal - 2: Verify nodes

kubectl get nodes -o wide