Chapter 7. High availability on OpenShift Serverless

Procedure

1. In the web console Administrator perspective, navigate to OperatorHub Installed Operators.

   

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2. Select the knative-serving namespace.

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

   

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4. Click knative-serving, then go to the YAML tab in the knative-serving page.

   

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5. Edit the CRD YAML:

   Example YAML

   apiVersion: operator.knative.dev/v1alpha1
   kind: KnativeServing
   metadata:
     name: knative-serving
     namespace: knative-serving
   spec:
     high-availability:
       replicas: 3

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   Important

   Do not modify any YAML contained inside the config field. Some of the configuration values in this field are injected by the OpenShift Serverless Operator, and modifying them will cause your deployment to become unsupported.

   • The default replicas value is 2.
   • Changing the value to 1 disables HA, or you can increase the number of replicas as required. The example configuration shown specifies a replica count of 3 for all HA controllers.