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Update content/en/docs/reference/access-authn-authz/admission-controllers.md

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Co-authored-by: Tim Bannister <tim@scalefactory.com>
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Sergey Kanzhelev
2020-10-29 17:19:11 -07:00
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@@ -727,8 +727,13 @@ See the [resourceQuota design doc](https://git.k8s.io/community/contributors/des
{{< feature-state for_k8s_version="v1.18" state="beta" >}} {{< feature-state for_k8s_version="v1.18" state="beta" >}}
For [RuntimeClass](/docs/concepts/containers/runtime-class/) definitions which describe an overhead associated with running a pod, If you enable the `PodOverhead` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/), and define a RuntimeClass with [Pod overhead](/docs/concepts/scheduling-eviction/pod-overhead/) configured, this admission controller checks incoming
this admission controller will set the pod.Spec.Overhead field accordingly. Pods. When enabled, this admission controller rejects any Pod create requests that have the overhead already set.
For Pods that have a RuntimeClass is configured and selected in their `.spec`, this admission controller sets `.spec.overhead` in the Pod based on the value defined in the corresponding RuntimeClass.
{{< note >}}
The `.spec.overhead` field for Pod and the `.overhead` field for RuntimeClass are both in beta. If you do not enable the `PodOverhead` feature gate, all Pods are treated as if `.spec.overhead` is unset.
{{< /note >}}
See also [Pod Overhead](/docs/concepts/scheduling-eviction/pod-overhead/) See also [Pod Overhead](/docs/concepts/scheduling-eviction/pod-overhead/)
for more information. for more information.