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Karpenter is a Kubernetes Node Autoscaler built for flexibility, performance, and simplicity.

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Karpenter

Karpenter improves the efficiency and cost of running workloads on Kubernetes clusters 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
  • Removing the nodes when the nodes are no longer needed

Karpenter Implementations

Karpenter is a multi-cloud project with implementations by the following cloud providers:

Community, discussion, contribution, and support

If you have any questions or want to get the latest project news, you can connect with us in the following ways:

  • Using and Deploying Karpenter? Reach out in the #karpenter channel in the Kubernetes slack to ask questions about configuring or troubleshooting Karpenter.
  • Contributing to or Developing with Karpenter? Join the #karpenter-dev channel in the Kubernetes slack to ask in-depth questions about contribution or to get involved in design discussions.
  • Join our alternating working group meetings where we share the latest project updates, answer questions, and triage issues:

Pull Requests and feedback on issues are very welcome! See the issue tracker if you're unsure where to start, especially the Good first issue and Help wanted tags, and also feel free to reach out to discuss.

See also our contributor guide and the Kubernetes community page for more details on how to get involved.

Code of conduct

Participation in the Kubernetes community is governed by the Kubernetes Code of Conduct.

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Karpenter is a Kubernetes Node Autoscaler built for flexibility, performance, and simplicity.

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