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Installing the cert-manager Operator for Red Hat OpenShift

Installing the cert-manager Operator for Red Hat OpenShift

Installing the cert-manager Operator for Red Hat OpenShift by using the web console

You can use the web console to install the cert-manager Operator for Red Hat OpenShift.

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. Navigate to Operators → OperatorHub.

  3. Enter cert-manager Operator for Red Hat OpenShift into the filter box.

  4. Select the cert-manager Operator for Red Hat OpenShift

  5. Select the cert-manager Operator for Red Hat OpenShift version from Version drop-down list, and click Install.

    See supported cert-manager Operator for Red Hat OpenShift versions in the following "Additional resources" section.

  6. On the Install Operator page:

    1. Update the Update channel, if necessary. The channel defaults to stable-v1, which installs the latest stable release of the cert-manager Operator for Red Hat OpenShift.

    2. Choose the Installed Namespace for the Operator. The default Operator namespace is cert-manager-operator.

      If the cert-manager-operator namespace does not exist, it is created for you.

    3. Select an Update approval strategy.

      • The Automatic strategy allows Operator Lifecycle Manager (OLM) to automatically update the Operator when a new version is available.

      • The Manual strategy requires a user with appropriate credentials to approve the Operator update.

    4. Click Install.

Verification

  1. Navigate to Operators → Installed Operators.

  2. Verify that cert-manager Operator for Red Hat OpenShift is listed with a Status of Succeeded in the cert-manager-operator namespace.

  3. Verify that cert-manager pods are up and running by entering the following command:

    $ oc get pods -n cert-manager
    Example output
    NAME                                       READY   STATUS    RESTARTS   AGE
cert-manager-bd7fbb9fc-wvbbt               1/1     Running   0          3m39s
cert-manager-cainjector-56cc5f9868-7g9z7   1/1     Running   0          4m5s
cert-manager-webhook-d4f79d7f7-9dg9w       1/1     Running   0          4m9s

    You can use the cert-manager Operator for Red Hat OpenShift only after cert-manager pods are up and running.

Installing the cert-manager Operator for Red Hat OpenShift by using the CLI

Prerequisites

  • You have access to the cluster with cluster-admin privileges.

Procedure

  1. Create a new project named cert-manager-operator by running the following command:

    $ oc new-project cert-manager-operator

  2. Create an OperatorGroup object:

    1. Create a YAML file, for example, operatorGroup.yaml, with the following content:

      apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
  name: openshift-cert-manager-operator
  namespace: cert-manager-operator
spec:
  targetNamespaces:
  - "cert-manager-operator"

    2. Create the OperatorGroup object by running the following command:

      $ oc create -f operatorGroup.yaml

  3. Create a Subscription object:

    1. Create a YAML file, for example, subscription.yaml, that defines the Subscription object:

      apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: openshift-cert-manager-operator
  namespace: cert-manager-operator
spec:
  channel: stable-v1
  name: openshift-cert-manager-operator
  source: redhat-operators
  sourceNamespace: openshift-marketplace
  installPlanApproval: Automatic
  startingCSV: cert-manager-operator.v1.13.0

    2. Create the Subscription object by running the following command:

      $ oc create -f subscription.yaml
Verification

  1. Verify that the OLM subscription is created by running the following command:

    $ oc get subscription -n cert-manager-operator
    Example output
    NAME                              PACKAGE                           SOURCE             CHANNEL
openshift-cert-manager-operator   openshift-cert-manager-operator   redhat-operators   stable-v1

  2. Verify whether the Operator is successfully installed by running the following command:

    $ oc get csv -n cert-manager-operator
    Example output
    NAME                            DISPLAY                                       VERSION   REPLACES                        PHASE
cert-manager-operator.v1.13.0   cert-manager Operator for Red Hat OpenShift   1.13.0    cert-manager-operator.v1.12.1   Succeeded

  3. Verify that the status cert-manager Operator for Red Hat OpenShift is Running by running the following command:

    $ oc get pods -n cert-manager-operator
    Example output
    NAME                                                        READY   STATUS    RESTARTS   AGE
cert-manager-operator-controller-manager-695b4d46cb-r4hld   2/2     Running   0          7m4s

  4. Verify that the status of cert-manager pods is Running by running the following command:

    $ oc get pods -n cert-manager
    Example output
    NAME                                       READY   STATUS    RESTARTS   AGE
cert-manager-58b7f649c4-dp6l4              1/1     Running   0          7m1s
cert-manager-cainjector-5565b8f897-gx25h   1/1     Running   0          7m37s
cert-manager-webhook-9bc98cbdd-f972x       1/1     Running   0          7m40s
Additional resources

Understanding update channels of the cert-manager Operator for Red Hat OpenShift

Update channels are the mechanism by which you can declare the version of your cert-manager Operator for Red Hat OpenShift in your cluster. The cert-manager Operator for Red Hat OpenShift offers the following update channels:

  • stable-v1

  • stable-v1.y

stable-v1 channel

The stable-v1 channel is the default and suggested channel while installing the cert-manager Operator for Red Hat OpenShift. The stable-v1 channel installs and updates the latest release version of the cert-manager Operator for Red Hat OpenShift. Select the stable-v1 channel if you want to use the latest stable release of the cert-manager Operator for Red Hat OpenShift.

The stable-v1 channel offers the following update approval strategies:

Automatic

If you choose automatic updates for an installed cert-manager Operator for Red Hat OpenShift, a new version of the cert-manager Operator for Red Hat OpenShift is available in the stable-v1 channel. The Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without human intervention.

Manual

If you select manual updates, when a newer version of the cert-manager Operator for Red Hat OpenShift is available, OLM creates an update request. As a cluster administrator, you must then manually approve that update request to have the cert-manager Operator for Red Hat OpenShift updated to the new version.

stable-v1.y channel

The y-stream version of the cert-manager Operator for Red Hat OpenShift installs updates from the stable-v1.y channels such as stable-v1.10, stable-v1.11, and stable-v1.12. Select the stable-v1.y channel if you want to use the y-stream version and stay updated to the z-stream version of the cert-manager Operator for Red Hat OpenShift.

The stable-v1.y channel offers the following update approval strategies:

Automatic

If you choose automatic updates for an installed cert-manager Operator for Red Hat OpenShift, a new z-stream version of the cert-manager Operator for Red Hat OpenShift is available in the stable-v1.y channel. OLM automatically upgrades the running instance of your Operator without human intervention.

Manual

If you select manual updates, when a newer version of the cert-manager Operator for Red Hat OpenShift is available, OLM creates an update request. As a cluster administrator, you must then manually approve that update request to have the cert-manager Operator for Red Hat OpenShift updated to the new version of the z-stream releases.

Additional resources