Blog | Roberto Bandini

Boost Your EKS Efficiency: Migrating from Cluster-Autoscaler to Karpenter

Post author By Roberto Bandini
Post date 17 November 2024

In the previous post How to create an AWS EKS cluster with VPN access using Terraform, we had deployed cluster-autoscaler on our EKS to be able to automatically scale managed node groups.

Let’s now see how to deploy Karpenter on EKS via Terraform and then how to migrate from cluster-autoscaler to Karpenter.

We do this because Karpenter is a sort of evolution of cluster-autoscaler and has several advantages: not only is it faster and allows us to go beyond the constraints of managed node groups, but it allows us to better optimize costs and make development teams more autonomous.

How Karpenter works – original image from https://karpenter.sh/

Tags autoscaling, aws, cluster-autoscaler, eks, karpenter, kubernetes, terraform, vpc, vpn

AWS Kubernetes Terraform

How to create an AWS EKS cluster with VPN access using Terraform

Post author By Roberto Bandini
Post date 29 September 2024

This Terraform project example allows you to create an EKS with its VPC, its VPN to access it privately and the cluster-autoscaler.
It is excellent for creating your own infrastructure on which you can then carry out your own tests and developments.

In the following diagram we see a summary of the infrastructure that we will create, that is, a VPC with private and public subnets per availability zone, with an EKS and an AWS VPN client that allows you to connect to the private subnets, as well as access the EKS privately.

AWS EKS with private access via AWS client VPN

Tags aws, eks, kubernetes, terraform, vpn