Karpenter aims to enhance both the effectiveness and affordability of managing workloads within a Kubernetes cluster. The core mechanics of Karpenter involve:
- Monitoring unscheduled pods identified by the Kubernetes scheduler.
- Scrutinizing the scheduling constraints, including resource requests, node selectors, affinities, tolerations, and topology spread constraints, as stipulated by the pods.
- Provisioning nodes that precisely align with the pods’ requirements.
- Streamlining cluster resource usage by removing nodes once their services are no longer required.
In this article, I talk about how to set up and use Karpenter for managing worker nodes in EKS.