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Merge pull request #1764 from marquiz/devel/docs-k8s-compat

docs: describe Kubernetes version compatibility in versions page
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# Deployment
Node Feature Discovery can be deployed on any recent version of Kubernetes
(v1.21+).
(v1.24+).
See [Image variants](image-variants.md) for description of the different NFD
container images available.

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@ -20,7 +20,7 @@ deploy NFD. Customization of the deployment is done by maintaining
declarative overlays on top of the base overlays in NFD.
To follow the deployment instructions here,
[kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl) v1.21 or
[kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl) v1.24 or
later is required.
The kustomize overlays provided in the repo can be used directly:

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@ -238,13 +238,6 @@ the Kubernetes API, pass the `-no-publish` flag to nfd-topology-updater.
> run stand-alone directly with `docker run`. See
> the [template spec](https://github.com/kubernetes-sigs/node-feature-discovery/blob/{{site.release}}/deployment/components/topology-updater/topologyupdater-mounts.yaml)
> for up-to-date information about the required volume mounts.
>
> [PodResource API][podresource-api] is a prerequisite for
> nfd-topology-updater. Preceding Kubernetes v1.23, the `kubelet` must be
> started with the following flag:
> `--feature-gates=KubeletPodResourcesGetAllocatable=true`. Starting
> Kubernetes v1.23, the `GetAllocatableResources` is enabled by default through
> `KubeletPodResourcesGetAllocatable` [feature gate][feature-gate].
## Running with Tilt

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@ -19,7 +19,7 @@ This software enables node feature discovery for Kubernetes. It detects
hardware features available on each node in a Kubernetes cluster, and
advertises those features using node labels and optionally node extended
resources, annotations and node taints. Node Feature Discovery is compatible
with any recent version of Kubernetes (v1.21+).
with any recent version of Kubernetes (v1.24+).
NFD consists of four software components:

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@ -37,3 +37,7 @@ in **X+2**.
The same policy (support for 1 release after deprecation) also applies to Helm
chart parameters.
## Kubernetes compatibility
Node Feature Discovery is compatible with Kubernetes v1.24 and later.