4.2. Installing Knative Serving

Procedure

1. In the Administrator perspective of the OpenShift Container Platform web console, navigate to Operators Installed Operators.
2. Check that the Project dropdown at the top of the page is set to Project: knative-serving.

3. Click Knative Serving in the list of Provided APIs for the OpenShift Serverless Operator to go to the Knative Serving tab.

   

4. Click the Create Knative Serving button.

   

5. In the Create Knative Serving page, you can install Knative Serving using the default settings by clicking Create.

   You can also modify settings for the Knative Serving installation by editing the KnativeServing object using either the form provided, or by editing the YAML.

   • Using the form is recommended for simpler configurations that do not require full control of KnativeServing object creation.

   • Editing the YAML is recommended for more complex configurations that require full control of KnativeServing object creation. You can access the YAML by clicking the edit YAML link in the top right of the Create Knative Serving page.

     After you complete the form, or have finished modifying the YAML, click Create.

     注意

     For more information about configuration options for the KnativeServing custom resource definition, see the documentation on Advanced installation configuration options.

     
     

6. After you have installed Knative Serving, the KnativeServing object is created, and you will be automically directed to the Knative Serving tab.

   

   You will see knative-serving in the list of resources.

Verification

1. Click on knative-serving in the Knative Serving tab.

2. You will be automatically directed to the Knative Serving Overview page.

   
3. Scroll down to look at the list of Conditions.

4. You should see a list of conditions with a status of True, as shown in the example image.

   
   注意

   It may take a few seconds for the Knative Serving resources to be created. You can check their status in the Resources tab.

5. If the conditions have a status of Unknown or False, wait a few moments and then check again after you have confirmed that the resources have been created.

Procedure

1. Create a file named serving.yaml.

2. Copy the following sample YAML into serving.yaml:

   apiVersion: operator.knative.dev/v1alpha1
   kind: KnativeServing
   metadata:
       name: knative-serving
       namespace: knative-serving

3. Apply the serving.yaml file:

   $ oc apply -f serving.yaml

Verification

1. To verify the installation is complete, enter the following command:

   $ oc get knativeserving.operator.knative.dev/knative-serving -n knative-serving --template='{{range .status.conditions}}{{printf "%s=%s\n" .type .status}}{{end}}'

   The output should be similar to:

   DependenciesInstalled=True
   DeploymentsAvailable=True
   InstallSucceeded=True
   Ready=True

   注意

   It may take a few seconds for the Knative Serving resources to be created.

2. If the conditions have a status of Unknown or False, wait a few moments and then check again after you have confirmed that the resources have been created.

3. Check that the Knative Serving resources have been created by entering:

   $ oc get pods -n knative-serving

   The output should look similar to:

   NAME                               READY   STATUS    RESTARTS   AGE
   activator-5c596cf8d6-5l86c         1/1     Running   0          9m37s
   activator-5c596cf8d6-gkn5k         1/1     Running   0          9m22s
   autoscaler-5854f586f6-gj597        1/1     Running   0          9m36s
   autoscaler-hpa-78665569b8-qmlmn    1/1     Running   0          9m26s
   autoscaler-hpa-78665569b8-tqwvw    1/1     Running   0          9m26s
   controller-7fd5655f49-9gxz5        1/1     Running   0          9m32s
   controller-7fd5655f49-pncv5        1/1     Running   0          9m14s
   kn-cli-downloads-8c65d4cbf-mt4t7   1/1     Running   0          9m42s
   webhook-5c7d878c7c-n267j           1/1     Running   0          9m35s