compose-patterns-2025

2025 年生产环境 Docker Compose 模式

概述

本文档介绍了适用于 2025 年的生产就绪 Docker Compose 模式和最佳实践，内容基于 Docker 官方文档和行业标准。

文件格式变更（2025 年）

重要： 在 Docker Compose v2.42+ 中，version 字段现已弃用。

正确写法（2025 年）：

services:
  app:
    image: myapp:latest

错误写法（已弃用）：

version: '3.8'  # DO NOT USE
services:
  app:
    image: myapp:latest

多环境策略

模式：基础配置 + 环境覆盖

compose.yaml（基础配置）：

services:
  app:
    build:
      context: ./app
      dockerfile: Dockerfile
    environment:
      - NODE_ENV=production
    restart: unless-stopped

compose.override.yaml（开发环境 - 自动加载）：

services:
  app:
    build:
      target: development
    volumes:
      - ./app/src:/app/src:cached
    environment:
      - NODE_ENV=development
      - DEBUG=*
    ports:
      - "9229:9229"  # Debugger

compose.prod.yaml（生产环境 - 显式指定）：

services:
  app:
    build:
      target: production
    deploy:
      replicas: 3
      resources:
        limits:
          cpus: '1'
          memory: 512M
      restart_policy:
        condition: on-failure
        max_attempts: 3

用法：

# Development (auto-loads compose.override.yaml)
docker compose up

# Production
docker compose -f compose.yaml -f compose.prod.yaml up -d

# CI/CD
docker compose -f compose.yaml -f compose.ci.yaml up --abort-on-container-exit

环境变量管理

模式：每个环境使用单独的 .env 文件

.env.template（提交到 git）：

# Database
DB_HOST=sqlserver
DB_PORT=1433
DB_NAME=myapp
DB_USER=sa
# DB_PASSWORD= (set in actual .env)

# Redis
REDIS_HOST=redis
REDIS_PORT=6379
# REDIS_PASSWORD= (set in actual .env)

# Application
NODE_ENV=production
LOG_LEVEL=info

.env.dev：

DB_PASSWORD=Dev!Pass123
REDIS_PASSWORD=redis-dev-123
NODE_ENV=development
LOG_LEVEL=debug

.env.prod：

DB_PASSWORD=${PROD_DB_PASSWORD}  # From CI/CD
REDIS_PASSWORD=${PROD_REDIS_PASSWORD}
NODE_ENV=production
LOG_LEVEL=info

加载指定环境：

docker compose --env-file .env.dev up

安全模式

模式：以非 root 用户身份运行

services:
  app:
    image: node:20-alpine
    user: "1000:1000"  # UID:GID
    read_only: true
    tmpfs:
      - /tmp
      - /app/.cache
    cap_drop:
      - ALL
    cap_add:
      - NET_BIND_SERVICE  # Only if binding to ports < 1024
    security_opt:
      - no-new-privileges:true

在 Dockerfile 中创建用户：

FROM node:20-alpine

# Create app user
RUN addgroup -g 1000 appuser && \
    adduser -D -u 1000 -G appuser appuser

# Set ownership
WORKDIR /app
COPY --chown=appuser:appuser . .

USER appuser

模式：密钥管理

Docker Swarm 密钥（生产环境）：

services:
  app:
    secrets:
      - db_password
      - api_key

secrets:
  db_password:
    file: ./secrets/db_password.txt
  api_key:
    external: true  # Managed by Swarm

在应用程序中访问密钥：

// Read from /run/secrets/
const fs = require('fs');
const dbPassword = fs.readFileSync('/run/secrets/db_password', 'utf8').trim();

开发环境替代方案（环境变量）：

services:
  app:
    environment:
      - DB_PASSWORD_FILE=/run/secrets/db_password

健康检查模式

模式：全面的健康检查

HTTP 端点：

services:
  web:
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
      interval: 30s
      timeout: 3s
      retries: 3
      start_period: 40s

数据库 ping：

services:
  postgres:
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER"]
      interval: 10s
      timeout: 3s
      retries: 3

自定义脚本：

services:
  app:
    healthcheck:
      test: ["CMD", "node", "/app/scripts/healthcheck.js"]
      interval: 30s
      timeout: 3s
      retries: 3
      start_period: 40s

healthcheck.js：

const http = require('http');

const options = {
  hostname: 'localhost',
  port: 8080,
  path: '/health',
  timeout: 2000
};

const req = http.request(options, (res) => {
  process.exit(res.statusCode === 200 ? 0 : 1);
});

req.on('error', () => process.exit(1));
req.on('timeout', () => {
  req.destroy();
  process.exit(1);
});
req.end();

依赖管理

模式：按条件控制启动顺序

services:
  web:
    depends_on:
      database:
        condition: service_healthy
      redis:
        condition: service_started
      migration:
        condition: service_completed_successfully

  database:
    healthcheck:
      test: ["CMD-SHELL", "pg_isready"]
      interval: 10s

  redis:
    # No health check needed, just wait for start

  migration:
    image: myapp:latest
    command: npm run migrate
    restart: "no"  # Run once
    depends_on:
      database:
        condition: service_healthy

网络隔离模式

模式：三层网络架构

services:
  nginx:
    image: nginx:alpine
    networks:
      - frontend
    ports:
      - "80:80"

  api:
    build: ./api
    networks:
      - frontend
      - backend

  database:
    image: postgres:16-alpine
    networks:
      - backend  # No frontend access

networks:
  frontend:
    driver: bridge
  backend:
    driver: bridge
    internal: true  # No external access

模式：服务专用网络

services:
  web-app:
    networks:
      - public
      - app-network

  api:
    networks:
      - app-network
      - data-network

  postgres:
    networks:
      - data-network

  redis:
    networks:
      - data-network

networks:
  public:
    driver: bridge
  app-network:
    driver: bridge
    internal: true
  data-network:
    driver: bridge
    internal: true

卷模式

模式：使用命名卷实现持久化

services:
  database:
    volumes:
      - db-data:/var/lib/postgresql/data  # Persistent data
      - ./init:/docker-entrypoint-initdb.d:ro  # Init scripts (read-only)
      - db-logs:/var/log/postgresql  # Logs

volumes:
  db-data:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: /mnt/data/postgres  # Host path
  db-logs:
    driver: local

模式：开发环境绑定挂载

services:
  app:
    volumes:
      - ./src:/app/src:cached  # macOS optimization
      - /app/node_modules  # Don't overwrite installed modules
      - app-cache:/app/.cache  # Named volume for cache

卷挂载选项：

• :ro - 只读
• :rw - 读写（默认）
• :cached - macOS 性能优化（以主机为准）
• :delegated - macOS 性能优化（以容器为准）
• :z - SELinux 单容器
• :Z - SELinux 多容器

资源管理模式

模式：CPU 和内存限制

services:
  app:
    deploy:
      resources:
        limits:
          cpus: '1.0'
          memory: 512M
        reservations:
          cpus: '0.5'
          memory: 256M

计算资源总量：

# 3 app replicas + database + redis
services:
  app:
    deploy:
      replicas: 3
      resources:
        limits:
          cpus: '0.5'      # 3 x 0.5 = 1.5 CPUs
          memory: 512M     # 3 x 512M = 1.5GB

  database:
    deploy:
      resources:
        limits:
          cpus: '2'        # 2 CPUs
          memory: 4G       # 4GB

  redis:
    deploy:
      resources:
        limits:
          cpus: '0.5'      # 0.5 CPUs
          memory: 512M     # 512MB

# Total: 4 CPUs, 6GB RAM minimum

日志模式

模式：集中式日志记录

services:
  app:
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
        compress: "true"
        labels: "app,environment"

替代方案：将日志输出到 stdout/stderr（12 因子）：

services:
  app:
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"

查看日志：

docker compose logs -f app
docker compose logs --since 30m app
docker compose logs --tail 100 app

初始化容器模式

模式：数据库迁移

services:
  migration:
    image: myapp:latest
    command: npm run migrate
    depends_on:
      database:
        condition: service_healthy
    restart: "no"  # Run once
    networks:
      - backend

  app:
    image: myapp:latest
    depends_on:
      migration:
        condition: service_completed_successfully
    networks:
      - backend

YAML 锚点和别名

模式：可复用配置

x-common-app-config: &common-app
  restart: unless-stopped
  logging:
    driver: "json-file"
    options:
      max-size: "10m"
      max-file: "3"
  security_opt:
    - no-new-privileges:true
  cap_drop:
    - ALL
  cap_add:
    - NET_BIND_SERVICE

services:
  app1:
    <<: *common-app
    build: ./app1
    ports:
      - "8001:8080"

  app2:
    <<: *common-app
    build: ./app2
    ports:
      - "8002:8080"

  app3:
    <<: *common-app
    build: ./app3
    ports:
      - "8003:8080"

模式：特定环境的覆盖配置

x-logging: &default-logging
  driver: "json-file"
  options:
    max-size: "10m"
    max-file: "3"

x-resources: &default-resources
  limits:
    cpus: '1'
    memory: 512M
  reservations:
    cpus: '0.5'
    memory: 256M

services:
  app:
    logging: *default-logging
    deploy:
      resources: *default-resources

端口绑定模式

模式：安全优先的端口绑定

services:
  # Public services
  web:
    ports:
      - "80:8080"
      - "443:8443"

  # Development only (localhost binding)
  debug:
    ports:
      - "127.0.0.1:9229:9229"  # Debugger only accessible from host

  # Environment-based binding
  app:
    ports:
      - "${DOCKER_WEB_PORT_FORWARD:-127.0.0.1:8000}:8000"

环境控制：

# Development (.env.dev)
DOCKER_WEB_PORT_FORWARD=127.0.0.1:8000  # Localhost only

# Production (.env.prod)
DOCKER_WEB_PORT_FORWARD=8000  # All interfaces

重启策略模式

services:
  # Always restart (production services)
  app:
    restart: always

  # Restart unless manually stopped (most common)
  database:
    restart: unless-stopped

  # Never restart (one-time tasks)
  migration:
    restart: "no"

  # Restart on failure only (with Swarm)
  worker:
    deploy:
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s

验证和测试

模式：部署前验证

#!/bin/bash
set -euo pipefail

echo "Validating Compose syntax..."
docker compose config > /dev/null

echo "Building images..."
docker compose build

echo "Running security scan..."
for service in $(docker compose config --services); do
  image=$(docker compose config | yq ".services.$service.image")
  if [ -n "$image" ]; then
    docker scout cves "$image" || true
  fi
done

echo "Starting services..."
docker compose up -d

echo "Checking health..."
sleep 10
docker compose ps

echo "Running smoke tests..."
curl -f http://localhost:8080/health || exit 1

echo "✓ All checks passed"

完整的生产环境示例

# Modern Compose format (no version field for v2.40+)

x-common-service: &common-service
  restart: unless-stopped
  logging:
    driver: "json-file"
    options:
      max-size: "10m"
      max-file: "3"
  security_opt:
    - no-new-privileges:true

services:
  nginx:
    <<: *common-service
    image: nginxinc/nginx-unprivileged:alpine
    ports:
      - "80:8080"
    volumes:
      - ./nginx/conf.d:/etc/nginx/conf.d:ro
    networks:
      - frontend
    depends_on:
      api:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:8080/health"]
      interval: 30s

  api:
    <<: *common-service
    build:
      context: ./api
      dockerfile: Dockerfile
      target: production
    user: "1000:1000"
    read_only: true
    tmpfs:
      - /tmp
    cap_drop:
      - ALL
    cap_add:
      - NET_BIND_SERVICE
    networks:
      - frontend
      - backend
    depends_on:
      migration:
        condition: service_completed_successfully
      redis:
        condition: service_started
    env_file:
      - .env
    healthcheck:
      test: ["CMD", "node", "healthcheck.js"]
      interval: 30s
      start_period: 40s
    deploy:
      resources:
        limits:
          cpus: '1'
          memory: 512M

  migration:
    image: myapp:latest
    command: npm run migrate
    restart: "no"
    networks:
      - backend
    depends_on:
      postgres:
        condition: service_healthy

  postgres:
    <<: *common-service
    image: postgres:16-alpine
    environment:
      - POSTGRES_PASSWORD_FILE=/run/secrets/postgres_password
    secrets:
      - postgres_password
    volumes:
      - postgres-data:/var/lib/postgresql/data
    networks:
      - backend
    healthcheck:
      test: ["CMD-SHELL", "pg_isready"]
      interval: 10s
    deploy:
      resources:
        limits:
          cpus: '1'
          memory: 2G

  redis:
    <<: *common-service
    image: redis:7.4-alpine
    command: redis-server --requirepass ${REDIS_PASSWORD}
    volumes:
      - redis-data:/data
    networks:
      - backend
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s

networks:
  frontend:
    driver: bridge
  backend:
    driver: bridge
    internal: true

volumes:
  postgres-data:
    driver: local
  redis-data:
    driver: local

secrets:
  postgres_password:
    file: ./secrets/postgres_password.txt

应避免的常见错误

1. 使用 version 字段 - 2025 年已弃用
2. 没有健康检查 - 会导致竞态条件
3. 以 root 身份运行 - 存在安全风险
4. 没有资源限制 - 可能耗尽主机资源
5. 硬编码密钥 - 使用密钥或环境变量
6. 没有日志限制 - 可能导致磁盘空间问题
7. 在生产环境中使用绑定挂载 - 改用命名卷
8. 缺少重启策略 - 服务无法恢复
9. 没有网络隔离 - 所有服务都可以相互通信
10. 未使用 .dockerignore - 构建上下文更大

故障排除命令

# Validate syntax
docker compose config

# View merged configuration
docker compose config --services

# Check which file is being used
docker compose config --files

# View environment interpolation
docker compose config --no-interpolate

# Check service dependencies
docker compose config | yq '.services.*.depends_on'

# View resource usage
docker stats $(docker compose ps -q)

# Debug startup issues
docker compose up --no-deps service-name

# Force recreate
docker compose up --force-recreate service-name

参考资料

• Docker Compose 文档
• Compose v2.42+ 发布说明
• 最佳实践