docker-compose.yml

services:
  mysql:
    image: mysql:8.0.33
    container_name: mes-mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-123455}
      MYSQL_DATABASE: mes_db
    ports:
      - "3306:3306"
    volumes:
      - mysql-data:/var/lib/mysql
    healthcheck:
      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-p${MYSQL_ROOT_PASSWORD:-123455}"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 30s
    deploy:
      resources:
        limits:
          memory: 512M
    networks:
      - mes-network

  redis:
    image: redis:7-alpine
    container_name: mes-redis
    restart: always
    ports:
      - "6379:6379"
    command: redis-server --maxmemory 256mb --maxmemory-policy allkeys-lru --appendonly yes
    volumes:
      - redis-data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 10s
    deploy:
      resources:
        limits:
          memory: 256M
    networks:
      - mes-network

  zookeeper:
    image: confluentinc/cp-zookeeper:7.5.0
    container_name: mes-zookeeper
    restart: always
    # Confluent entrypoint 不 exec 且健康检查脚本频繁 fork，僵尸子进程无人回收
    # (服务器实测 137 个)；init: true 注入 tini 作为 PID 1 统一回收
    init: true
    ports:
      - "2181:2181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    healthcheck:
      test: ["CMD-SHELL", "echo ruok | nc -w 2 localhost 2181 | grep imok"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 20s
    deploy:
      resources:
        limits:
          memory: 128M
    networks:
      - mes-network

  kafka:
    image: confluentinc/cp-kafka:7.5.0
    container_name: mes-kafka
    restart: always
    # 同上：僵尸进程累积 (服务器实测 1072 个)，tini 作为 PID 1 回收
    init: true
    depends_on:
      zookeeper:
        condition: service_healthy
    ports:
      - "9092:9092"
    environment:
      KAFKA_NODE_ID: 1
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_internal:PLAINTEXT
      KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092,PLAINTEXT_internal://0.0.0.0:9093
      # advertised 用容器服务名 kafka，容器内客户端才能正确连接
      # （之前用 localhost 导致 dashboard 连不上 broker）
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_internal://kafka:9093
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_LOG_DIRS: /var/lib/kafka/data
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
    volumes:
      - kafka-data:/var/lib/kafka/data
    healthcheck:
      test: ["CMD-SHELL", "kafka-topics --bootstrap-server localhost:9092 --list >/dev/null 2>&1"]
      interval: 15s
      timeout: 10s
      retries: 10
      start_period: 40s
    deploy:
      resources:
        limits:
          memory: 512M
    networks:
      - mes-network

  emqx:
    image: emqx/emqx:5.8.3
    container_name: mes-emqx
    restart: always
    ports:
      - "1883:1883"      # MQTT
      - "18083:18083"    # Dashboard 控制台
    environment:
      EMQX_NODE_NAME: mes-emqx@127.0.0.1
      EMQX_DASHBOARD__DEFAULT_PASSWORD: ${EMQX_DEFAULT_PASSWORD:-public}
    healthcheck:
      test: ["CMD-SHELL", "emqx ctl status | grep -q 'is running'"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 20s
    deploy:
      resources:
        limits:
          memory: 256M
    networks:
      - mes-network

volumes:
  mysql-data:
  redis-data:
  kafka-data:

networks:
  mes-network:
    driver: bridge