Karpenter support for cluster autoscaling

alexisbel1 commented 2 years ago

Karpenter is an open-source node provisioning project built for Kubernetes. Its goal is to improve the efficiency and cost of running workloads on Kubernetes clusters. Karpenter works by:

Watching for pods that the Kubernetes scheduler has marked as unschedulable
Evaluating scheduling constraints (resource requests, nodeselectors, affinities, tolerations, and topology spread constraints) requested by the pods
Provisioning nodes that meet the requirements of the pods
Scheduling the pods to run on the new nodes
Removing the nodes when the nodes are no longer needed

Karpenter has many advantages over cluster autoscaler. One prerequisite would be that AKS can manage multiple instance types without defining multiple node pools.

Currently the only cloud provider which support Karpenter is AWS.

It would be awesome to have AKS support it.

bplasmeijer commented 1 month ago

@justindavies @palma21 Windows node pools

EppO commented 1 week ago

The only network configuration allowed is Azure CNI Overlay with Powered by Cilium.

This is a strong requirement too, I hope it will cover more possible AKS configurations before it reaches GA.

Azure / AKS

Karpenter support for cluster autoscaling #2712