Which API Group in k8s

To get API resources – supported by your Kubernetes cluster:

 kubectl api-resources -o wide

example:
NAME                              SHORTNAMES   APIGROUP                       NAMESPACED   KIND                             VERBS
deployments                       deploy       apps                           true         Deployment                   [create delete deletecollection get list patch update watch]
deployments                       deploy       extensions                     true         Deployment                   [create delete deletecollection get list patch update watch]

To get API versions – supported by your Kubernetes cluster:

kubectl api-versions

You can verify f.e. deployment:

kubectl explain deploy 

KIND:     Deployment
VERSION:  extensions/v1beta1

DESCRIPTION:
     DEPRECATED - This group version of Deployment is deprecated by
     apps/v1beta2/Deployment.

Furthermore you can investigate with api-version:

kubectl explain deploy --api-version apps/v1

Shortly you an specify in you apiGroups like:

apiGroups: ["extensions", "apps"]

You can also configure those settings for your cluster using (for example to test it will work with next 1.16 release) by passing options into --runtime-config in kube-apiserver.

Additional resources:

  • api Resources:
  • Kubernetes Deprecation Policy
  • Additional Notable Feature Updates for specific release please follow like:

    Continued deprecation of extensions/v1beta1, apps/v1beta1, and apps/v1beta2 APIs; these extensions will be retired in 1.16!

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