docker-compose.yml

services:
  kafka1:
    image: confluentinc/cp-kafka:latest
    container_name: kafka1
    ports:
      - "9092:9092"
      - "29092:29092"
    environment:
      KAFKA_BROKER_ID: 1
      CLUSTER_ID: 'kafka-cluster-1'
      KAFKA_NODE_ID: 1
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENERS: 'INTERNAL://kafka1:29092,EXTERNAL://0.0.0.0:9092,CONTROLLER://kafka1:19092'
      KAFKA_ADVERTISED_LISTENERS: 'INTERNAL://kafka1:29092,EXTERNAL://localhost:9092'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT,CONTROLLER:PLAINTEXT'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'INTERNAL'
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:19092,2@kafka2:19092,3@kafka3:19092'
    networks:
      - demo-network

  kafka2:
    image: confluentinc/cp-kafka:latest
    container_name: kafka2
    ports:
      - "9093:9093"
      - "29093:29093"
    environment:
      KAFKA_BROKER_ID: 2
      CLUSTER_ID: 'kafka-cluster-1'
      KAFKA_NODE_ID: 2
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENERS: 'INTERNAL://kafka2:29093,EXTERNAL://0.0.0.0:9093,CONTROLLER://kafka2:19092'
      KAFKA_ADVERTISED_LISTENERS: 'INTERNAL://kafka2:29093,EXTERNAL://localhost:9093'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT,CONTROLLER:PLAINTEXT'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'INTERNAL'
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:19092,2@kafka2:19092,3@kafka3:19092'
    networks:
      - demo-network

  kafka3:
    image: confluentinc/cp-kafka:latest
    container_name: kafka3
    ports:
      - "9094:9094"
      - "29094:29094"
    environment:
      KAFKA_BROKER_ID: 3
      CLUSTER_ID: 'kafka-cluster-1'
      KAFKA_NODE_ID: 3
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENERS: 'INTERNAL://kafka3:29094,EXTERNAL://0.0.0.0:9094,CONTROLLER://kafka3:19092'
      KAFKA_ADVERTISED_LISTENERS: 'INTERNAL://kafka3:29094,EXTERNAL://localhost:9094'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT,CONTROLLER:PLAINTEXT'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'INTERNAL'
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:19092,2@kafka2:19092,3@kafka3:19092'
    networks:
      - demo-network


  redis:
    image: redis:latest
    container_name: redis
    ports:
      - "6379:6379"
    networks:
      - demo-network

  mysql:
    image: mysql:latest
    container_name: mysql
    ports:
      - "3306:3306"
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      MYSQL_DATABASE: mydb
    command:
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_unicode_ci
    networks:
      - demo-network

networks:
  demo-network:
    external: true    # 외부 네트워크 사용 설정