Not able to create kafka topic using docker-compose

Question

I am trying to set up Kafka rest proxy using a docker. But the topic I am providing in the configuration isn't creating.

I am checking Kafka Topic with API: curl "http://metrics-kafka-rest:38082/topics" and I am getting this response: ["__confluent.support.metrics","_schemas"]

Below in the config that I have used in docker-compose:

    image: confluentinc/cp-zookeeper:5.3.0
    container_name: 'metrics-zookeeper'
    restart: always
    ports:
      - "32181:32181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 32181
      ZOOKEEPER_TICK_TIME: 2000
      ZOOKEEPER_SYNC_LIMIT: 2
      ZOOKEEPER_SASL_ENABLED: "FALSE"

  metrics-kafka:
    image: confluentinc/cp-kafka:5.3.0
    container_name: 'metrics-kafka'
    restart: always
    ports:
      - "29092:29092"
    depends_on:
      - metrics-zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
      KAFKA_ZOOKEEPER_CONNECT: metrics-zookeeper:32181
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://metrics-kafka:29092
      KAFKA_CREATE_TOPICS: "Notification:1:1"
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      CONFLUENT_METRICS_ENABLE: 'false'

  metrics-schema-registry:
    image: confluentinc/cp-schema-registry:5.3.0
    container_name: 'metrics-schema-registry'
    restart: always
    ports:
      - "38081:38081"
    depends_on:
      - metrics-kafka
    environment:
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: metrics-zookeeper:32181
      SCHEMA_REGISTRY_HOST_NAME: metrics-schema-registry
      SCHEMA_REGISTRY_LISTENERS: "http://metrics-schema-registry:38081"
      SCHEMA_REGISTRY_DEBUG: "true"

  metrics-kafka-rest:
    image: confluentinc/cp-kafka-rest:5.3.0
    container_name: 'metrics-kafka-rest'
    restart: always
    ports:
      - "38082:38082"
    depends_on:
      - metrics-schema-registry
    environment:
      KAFKA_REST_ZOOKEEPER_CONNECT: metrics-zookeeper:32181
      KAFKA_REST_SCHEMA_REGISTRY_URL: "http://metrics-schema-registry:38081"
      KAFKA_REST_HOST_NAME: metrics-kafka-rest
      KAFKA_REST_LISTENERS: "http://metrics-kafka-rest:38082"
      KAFKA_REST_DEBUG: "true"

I expect that when I hit API of getting the list of topics then it should contain topic Notification.

Answer 1

KAFKA_CREATE_TOPICS is not a supported Environment variable for the cp-kafka image that you're using.

Since you already have KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true" then you can just start using the broker and topics will be created as and when they're first referenced by the producer or consumer.