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.

Uninstalling 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.

Removing 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).
      terminal

      $ 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:
      terminal

      $ 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.