Karpenter is an open-source node provisioning project built for Kubernetes. Karpenter improves the efficiency and cost of running workloads on Kubernetes clusters by:
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Watching for pods that the Kubernetes scheduler has marked as unschedulable
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Evaluating scheduling constraints (resource requests, nodeselectors, affinities, tolerations, and topology spread constraints) requested by the pods
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Provisioning nodes that meet the requirements of the pods
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Removing the nodes when the nodes are no longer needed