Configuring Kafka Features¶

There are many different configuration options for how Knative Eventing and the Knaitve Broker for Apache Kafka interact with the Apache Kafka clusters.

Configure Knative Eventing Kafka features¶

There are various kafka features/default values the Knative Kafka Broker uses when interacting with Kafka.

Consumer Group ID for Triggers¶

The triggers.consumergroup.template value determines the template used to generate the consumer group ID used by your triggers.

Global key: triggers.consumergroup.template
Possible values:: Any valid go text/template
Default: knative-trigger-{{ .Namespace }}-{{ .Name }}

Example:

Global (ConfigMap)

apiVersion: v1
kind: ConfigMap
metadata:
  name: config-kafka-features
  namespace: knative-eventing
data:
  triggers.consumergroup.template: "knative-trigger-{{ .Namespace }}-{{ .Name }}"

Broker topic name template¶

The brokers.topic.template values determines the template used to generate the Kafka topic names used by your brokers.

Global Key: brokers.topic.template
Possible values: Any valid go text/template
Default: knative-broker-{{ .Namespace }}-{{ .Name }}

Example:

Global (ConfigMap)

apiVersion: v1
kind: ConfigMap
metadata:
  name: config-kafka-features
  namespace: knative-eventing
data:
  brokers.topic.template: "knative-broker-{{ .Namespace }}-{{ .Name }}"

Channel topic name template¶

The channels.topic.template value determines the template used to generate the kafka topic names used by your channels.

Global Key: controller-autoscaler-keda
Possible values: One of: enabled, disabled
Default: disabled
Stability: Alpha

Example:

Global (ConfigMap)

apiVersion: v1
kind: ConfigMap
metadata:
  name: config-kafka-features
  namespace: knative-eventing
data:
  controller-autoscaler-keda: enabled

Dispatcher autoscaling with KEDA¶

The controller-autoscaler-keda value determines whether Knative Kafka dispatcher components will autoscale with KEDA. For more information on this feature, please read the documentation here