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Uninstalling the cert-manager Operator for Red Hat OpenShift

You can remove the cert-manager Operator for Red Hat OpenShift from OpenShift Container Platform by uninstalling the Operator and removing its related resources.

Uninstall the cert-manager Operator for Red Hat OpenShift

You can uninstall the cert-manager Operator for Red Hat OpenShift by using the web console.

Prerequisites

  • You have access to the cluster with cluster-admin privileges.
  • You have access to the OpenShift Container Platform web console.
  • The cert-manager Operator for Red Hat OpenShift is installed.

Procedure

  1. Log in to the OpenShift Container Platform web console.

  2. Uninstall the cert-manager Operator for Red Hat OpenShift Operator.

    1. Navigate to Ecosystem → Installed Operators.
    2. Click the Options menu next to the cert-manager Operator for Red Hat OpenShift entry and click Uninstall Operator.
    3. In the confirmation dialog, click Uninstall.

Remove cert-manager Operator for Red Hat OpenShift resources

After you uninstall the cert-manager Operator for Red Hat OpenShift, you can delete its associated resources from your cluster.

Prerequisites

  • You have access to the cluster with cluster-admin privileges.
  • You have access to the OpenShift Container Platform web console.

Procedure

  1. Log in to the OpenShift Container Platform web console.

  2. Remove the deployments of the cert-manager components, such as cert-manager, cainjector, and webhook, present in the cert-manager namespace.

    1. Click the Project drop-down menu to see a list of all available projects, and select the cert-manager project.

    2. Navigate to Workloads → Deployments.

    3. Select the deployment that you want to delete.

    4. Click the Actions drop-down menu, and select Delete Deployment to see a confirmation dialog box.

    5. Click Delete to delete the deployment.

    6. Alternatively, delete deployments of the cert-manager components such as cert-manager, cainjector and webhook present in the cert-manager namespace by using the command-line interface (CLI).

      $ oc delete deployment -n cert-manager -l app.kubernetes.io/instance=cert-manager

  3. Optional: Remove the custom resource definitions (CRDs) that were installed by the cert-manager Operator for Red Hat OpenShift:

    1. Remove the finalizers from the CertManager custom resource (CR) by running the following command:

      $ oc patch certmanagers.operator cluster --type=merge -p='{"metadata":{"finalizers":null}}'

    2. Navigate to Administration → CustomResourceDefinitions.

    3. Enter certmanager in the Name field to filter the CRDs.

    4. Click the Options menu next to each of the following CRDs, and select Delete Custom Resource Definition:

      • Certificate
      • CertificateRequest
      • CertManager (operator.openshift.io)
      • Challenge
      • ClusterIssuer
      • Issuer
      • Order

  4. Optional: Remove the cert-manager-operator namespace.

    1. Navigate to Administration → Namespaces.
    2. Click the Options menu next to the cert-manager-operator and select Delete Namespace.
    3. In the confirmation dialog, enter cert-manager-operator in the field and click Delete.