Update the hyperlinks of Admission Controllers (#12241)
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Kubernetes Prow Robot
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@@ -62,13 +62,13 @@ In the following, we describe how to quickly experiment with admission webhooks.
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### Write an admission webhook server
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### Write an admission webhook server
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Please refer to the implementation of the [admission webhook
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Please refer to the implementation of the [admission webhook
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server](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/test/images/webhook/main.go)
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server](https://github.com/kubernetes/kubernetes/blob/v1.13.0/test/images/webhook/main.go)
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that is validated in a Kubernetes e2e test. The webhook handles the
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that is validated in a Kubernetes e2e test. The webhook handles the
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`admissionReview` requests sent by the apiservers, and sends back its decision
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`admissionReview` requests sent by the apiservers, and sends back its decision
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wrapped in `admissionResponse`.
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wrapped in `admissionResponse`.
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The example admission webhook server leaves the `ClientAuth` field
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The example admission webhook server leaves the `ClientAuth` field
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[empty](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/test/images/webhook/config.go#L48-L49),
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[empty](https://github.com/kubernetes/kubernetes/blob/v1.13.0/test/images/webhook/config.go#L47-L48),
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which defaults to `NoClientCert`. This means that the webhook server does not
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which defaults to `NoClientCert`. This means that the webhook server does not
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authenticate the identity of the clients, supposedly apiservers. If you need
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authenticate the identity of the clients, supposedly apiservers. If you need
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mutual TLS or other ways to authenticate the clients, see
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mutual TLS or other ways to authenticate the clients, see
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@@ -80,18 +80,18 @@ The webhook server in the e2e test is deployed in the Kubernetes cluster, via
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the [deployment API](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#deployment-v1beta1-apps).
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the [deployment API](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#deployment-v1beta1-apps).
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The test also creates a [service](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#service-v1-core)
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The test also creates a [service](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#service-v1-core)
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as the front-end of the webhook server. See
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as the front-end of the webhook server. See
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[code](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/test/e2e/apimachinery/webhook.go#L196).
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[code](https://github.com/kubernetes/kubernetes/blob/v1.13.0/test/e2e/apimachinery/webhook.go#L227).
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You may also deploy your webhooks outside of the cluster. You will need to update
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You may also deploy your webhooks outside of the cluster. You will need to update
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your [webhook client configurations](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L218) accordingly.
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your [webhook client configurations](https://github.com/kubernetes/kubernetes/blob/v1.13.0/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L247) accordingly.
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### Configure admission webhooks on the fly
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### Configure admission webhooks on the fly
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You can dynamically configure what resources are subject to what admission
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You can dynamically configure what resources are subject to what admission
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webhooks via
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webhooks via
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[ValidatingWebhookConfiguration](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L68)
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[ValidatingWebhookConfiguration](https://github.com/kubernetes/kubernetes/blob/v1.13.0/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L84)
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or
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or
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[MutatingWebhookConfiguration](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.1/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L98).
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[MutatingWebhookConfiguration](https://github.com/kubernetes/kubernetes/blob/v1.13.0/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go#L114).
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The following is an example `validatingWebhookConfiguration`, a mutating webhook
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The following is an example `validatingWebhookConfiguration`, a mutating webhook
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configuration is similar.
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configuration is similar.
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@@ -170,7 +170,7 @@ plugins:
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```
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```
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The schema of `admissionConfiguration` is defined
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The schema of `admissionConfiguration` is defined
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[here](https://github.com/kubernetes/kubernetes/blob/v1.10.0-beta.0/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go#L27).
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[here](https://github.com/kubernetes/kubernetes/blob/v1.13.0/staging/src/k8s.io/apiserver/pkg/apis/apiserver/v1alpha1/types.go#L27).
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* In the kubeConfig file, provide the credentials:
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* In the kubeConfig file, provide the credentials:
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@@ -242,7 +242,7 @@ all `spec.initializers[].name`s are appended to the new object's
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An initializer controller should list and watch for uninitialized objects, by
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An initializer controller should list and watch for uninitialized objects, by
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using the query parameter `?includeUninitialized=true`. If using client-go, just
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using the query parameter `?includeUninitialized=true`. If using client-go, just
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set
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set
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[listOptions.includeUninitialized](https://github.com/kubernetes/kubernetes/blob/v1.7.0-rc.1/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go#L315)
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[listOptions.includeUninitialized](https://github.com/kubernetes/kubernetes/blob/v1.13.0/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go#L332)
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to true.
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to true.
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For the observed uninitialized objects, an initializer controller should first
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For the observed uninitialized objects, an initializer controller should first
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