docs/concepts/bindings/specs/kafka.md

Kafka Binding Spec

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <name>
spec:
  type: bindings.kafka
  metadata:
  - name: topics # Optional. in use for input bindings
    value: topic1,topic2
  - name: brokers
    value: localhost:9092,localhost:9093
  - name: consumerGroup
    value: group1
  - name: publishTopic # Optional. in use for output bindings
    value: topic3
  - name: authRequired # Required. default: "true"
    value: "false"
   - name: saslUsername # Optional.
    value: "user"
   - name: saslPassword # Optional.
    value: "password"

topics is a comma separated string of topics for an input binding. brokers is a comma separated string of kafka brokers. consumerGroup is a kafka consumer group to listen on. publishTopic is the topic to publish for an output binding. authRequired determines whether to use SASL authentication or not. saslUsername is the SASL username for authentication. Only used if authRequired is set to "true". saslPassword is the SASL password for authentication. Only used if authRequired is set to "true".