services:
  kafka:
    image: apache/kafka:3.7.1
    container_name: kafka
    hostname: kafka
    ports:
      - "9092:9092"
    environment:
      KAFKA_NODE_ID: 1
      KAFKA_PROCESS_ROLES: broker,controller

      # KRaft 核心配置
      KAFKA_CONTROLLER_QUORUM_VOTERS: 1@kafka:9093
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER

      # listeners
      KAFKA_LISTENERS: PLAINTEXT://:9092,CONTROLLER://:9093
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT

      # 存储
      KAFKA_LOG_DIRS: /var/lib/kafka/data

      # 必须：KRaft cluster id（固定即可）
      CLUSTER_ID: MkU3OEVBNTcwNTJENDM2Qk

    volumes:
      - kafka_data:/var/lib/kafka/data

volumes:
  kafka_data: