# https://blog.exxeta.com/en/2021/05/20/kafka-cluster-setup-with-docker-and-docker-compose/

version: "3"
 
networks:
  kafka-cluster:
    name: kafka-cluster
    driver: bridge
 
services:
  zookeeper:
    image: bitnami/zookeeper:3.7.0
    container_name: zookeeper
    ports:
      - '2181:2181'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
    networks:
      - kafka-cluster
      
  kafka1:
    image: bitnami/kafka:3.1.0
    container_name: kafka1
    ports:
      - '9093:9093'
    environment:
      - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
      - ALLOW_PLAINTEXT_LISTENER=yes
      - KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP=CLIENT:PLAINTEXT,EXTERNAL:PLAINTEXT
      - KAFKA_CFG_LISTENERS=CLIENT://:9092,EXTERNAL://:9093
      - KAFKA_CFG_ADVERTISED_LISTENERS=CLIENT://kafka1:9092,EXTERNAL://localhost:9093
      - KAFKA_INTER_BROKER_LISTENER_NAME=CLIENT
      - KAFKA_CFG_AUTO_CREATE_TOPICS_ENABLE=true
    depends_on:
      - zookeeper
    networks:
      - kafka-cluster
      
  kafka2:
    image: bitnami/kafka:3.1.0
    container_name: kafka2
    ports:
      - '9094:9094'
    environment:
      - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
      - ALLOW_PLAINTEXT_LISTENER=yes
      - KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP=CLIENT:PLAINTEXT,EXTERNAL:PLAINTEXT
      - KAFKA_CFG_LISTENERS=CLIENT://:9092,EXTERNAL://:9094
      - KAFKA_CFG_ADVERTISED_LISTENERS=CLIENT://kafka2:9092,EXTERNAL://localhost:9094
      - KAFKA_INTER_BROKER_LISTENER_NAME=CLIENT
      - KAFKA_CFG_AUTO_CREATE_TOPICS_ENABLE=true
    depends_on:
      - zookeeper
    networks:
      - kafka-cluster
      
  kafka3:
    image: bitnami/kafka:3.1.0
    container_name: kafka3
    ports:
      - '9095:9095'
    environment:
      - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
      - ALLOW_PLAINTEXT_LISTENER=yes
      - KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP=CLIENT:PLAINTEXT,EXTERNAL:PLAINTEXT
      - KAFKA_CFG_LISTENERS=CLIENT://:9092,EXTERNAL://:9095
      - KAFKA_CFG_ADVERTISED_LISTENERS=CLIENT://kafka3:9092,EXTERNAL://localhost:9095
      - KAFKA_INTER_BROKER_LISTENER_NAME=CLIENT
      - KAFKA_CFG_AUTO_CREATE_TOPICS_ENABLE=true
    depends_on:
      - zookeeper
    networks:
      - kafka-cluster

  kowl:
    image: quay.io/cloudhut/kowl:v1.4.0
    container_name: kowl
    restart: on-failure
    hostname: kowl
    volumes:
    - ./config.yaml:/etc/kowl/config.yaml
    ports:
    - "8081:8080"
    entrypoint: ./kowl --config.filepath=/etc/kowl/config.yaml
    depends_on:
      - kafka1
    networks:
      - kafka-cluster