Extending Kubernetes

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External

Internal

Kubernetes Aggregation Layer

Kubernetes Aggregation Layer

Kubernetes Custom Resources

Custom Resources

Differences between Custom Resources and Extension API Servers

  • An extension API server can use different storage APIs rather than etcdv3
  • Extends long-running subresources/endpoints like websocket for your own resources
  • Integrates your apiserver with whatever external systems

Operator Pattern

Kubernetes Operators Concepts