title: Can I limit the number of my own custom resources that can be created with a ResourceQuota?
body: <p>If I have a custom resource definition like this:</p>
  
  <pre><code>$ kubectl get crd unifiedpushservers.push.aerogear.org
  NAME                                   CREATED AT
  unifiedpushservers.push.aerogear.org   2019-06-05T13:39:23Z
  </code></pre>
  
  <p>Is it possible to create a <code>ResourceQuota</code> that would limit the count of this type of custom resource to 1, refusing attempts to create additional ones?</p>
  
  <p>Here's what I've tried so far:</p>
  
  <pre><code>apiVersion: v1
  kind: ResourceQuota
  metadata:
    name: unifiedpushservers-limit
  spec:
    hard:
      count/unifiedpushservers.push.aerogear.org: 1
  </code></pre>
  
  <p>While this get accepted and created, it seems like the counting doesn't work and I'm able to create more than one instance.</p>
  
  <hr>
  
  <p><strong>Edit:</strong> If I quote the integer value of the field in the spec, like this:</p>
  
  <pre><code>apiVersion: v1
  kind: ResourceQuota
  metadata:
    name: unifiedpushservers-limit
  spec:
    hard:
      count/unifiedpushservers.push.aerogear.org: "1"
  </code></pre>
  
  <p>then I get the following error message when trying to create even one instance:</p>
  
  <pre><code>Error from server (Forbidden): error when creating "./deploy/crds/push_v1alpha1_unifiedpushserver_cr.yaml": unifiedpushservers.push.aerogear.org "example-unifiedpushserver" is forbidden: status unknown for quota: unifiedpushservers-limit
  </code></pre>
  
  <p>That feels like progress, but I might be getting further away, I'm not sure.</p>
  
  <p>Also, I should mention that I'm trying this on an OpenShift v3.11 cluster, which returns the following Kubernetes version info:</p>
  
  <pre><code>$ kubectl version
  Client Version: version.Info{Major:"1", Minor:"11+", GitVersion:"v1.11.0+d4cacc0", GitCommit:"d4cacc0", GitTreeState:"clean", BuildDate:"2018-10-10T16:38:01Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}
  Server Version: version.Info{Major:"1", Minor:"11+", GitVersion:"v1.11.0+d4cacc0", GitCommit:"d4cacc0", GitTreeState:"clean", BuildDate:"2018-11-09T15:12:26Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}
  </code></pre>