title: Why can't I delete the MutatingWebhookConfiguration I created?
body: <p>I'm experimenting with mutating admission controllers, and I seem to be able to create one, but not delete it, why is this?</p>
  <p>Creating webhook config:</p>
  <pre><code>apiVersion: admissionregistration.k8s.io/v1beta1
  kind: MutatingWebhookConfiguration
  metadata:
    name: webhook
  webhooks:
    - name: webhook.test.com
      clientConfig:
        service:
          name: my-service
          namespace: my-role
          path: &quot;/foo&quot;
        caBundle: &quot;XXX&quot;
      rules:
        - operations: [&quot;CREATE&quot;, &quot;UPDATE&quot;]
          apiGroups: [&quot;*&quot;]
          apiVersions: [&quot;*&quot;]
          resources: [&quot;pods&quot;]
          scope:       &quot;Namespaced&quot;
      failurePolicy: Fail
  
  </code></pre>
  <p>Attempting to delete it: <code>kubectl delete MutatingingWebhookConfiguration webhook</code>
  Response: <code>error: the server doesn't have a resource type &quot;MutatingingWebhookConfiguration&quot;</code></p>
  <p>I believe that error often has to do with the different versions of different resources, but I don't see why I would be able to create but not delete.</p>