4.4. Configuring the default broker backing channel

Procedure

1. Modify the KnativeEventing custom resource (CR) to add configuration details for the config-br-default-channel config map:

   apiVersion: operator.knative.dev/v1beta1
   kind: KnativeEventing
   metadata:
     name: knative-eventing
     namespace: knative-eventing
   spec:
     config: 

   1

   
       config-br-default-channel:
         channel-template-spec: |
           apiVersion: messaging.knative.dev/v1beta1
           kind: KafkaChannel 

   2

   
           spec:
             numPartitions: 6 

   3

   
             replicationFactor: 3 

   4

   1

   In spec.config, you can specify the config maps that you want to add modified configurations for.

   2

   The default backing channel type configuration. In this example, the default channel implementation for the cluster is KafkaChannel.

   3

   The number of partitions for the Kafka channel that backs the broker.

   4

   The replication factor for the Kafka channel that backs the broker.

2. Apply the updated KnativeEventing CR:

   $ oc apply -f <filename>