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update hyperlink for snaphshot validation webhook #397

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Oct 9, 2020
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update hyperlink for snaphshot validation webhook #397

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -85,7 +85,7 @@ Install CSI Driver:

### Validating Webhook

The snapshot validating webhook is an HTTP callback which responds to [admission requests](https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/). It is part of a larger [plan](https://github.com/kubernetes/enhancements/blob/master/keps/sig-storage/177-volume-snapshot/tighten-validation-webhook-crd.md) to tighten validation for volume snapshot objects. This webhook introduces the [ratcheting validation](https://github.com/kubernetes/enhancements/blob/master/keps/sig-storage/177-volume-snapshot/tighten-validation-webhook-crd.md#backwards-compatibility) mechanism targeting the tighter validation. The cluster admin or Kubernetes distribution admin should install the webhook alongside the snapshot controllers and CRDs.
The snapshot validating webhook is an HTTP callback which responds to [admission requests](https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/). It is part of a larger [plan](https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/1900-volume-snapshot-validation-webhook) to tighten validation for volume snapshot objects. This webhook introduces the [ratcheting validation](https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/1900-volume-snapshot-validation-webhook#backwards-compatibility) mechanism targeting the tighter validation. The cluster admin or Kubernetes distribution admin should install the webhook alongside the snapshot controllers and CRDs.

> :warning: **WARNING**: Cluster admins choosing not to install the webhook server and participate in the phased release process can cause future problems when upgrading from `v1beta1` to `v1` volumesnapshot API, if there are currently persisted objects which fail the new stricter validation. Potential impacts include being unable to delete invalid snapshot objects.

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