参考网站：

https://docs.docker.com/compose/compose-file/#build

项目一

使用：Compose file version 3 reference

三个节点：Manager，node2.和node3

yml文件：docker-compose.yml

version: '3'

services:

  web:
    image: wordpress
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: mysql
      WORDPRESS_DB_PASSWORD: root
    networks:
      - my-network
    depends_on:
      - mysql
    deploy:
      mode: replicated
      replicas: 3
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
      update_config:
        parallelism: 1
        delay: 10s

  mysql:
    image: mysql
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: wordpress
    volumes:
      - mysql-data:/var/lib/mysql
    networks:
      - my-network
    deploy:
      mode: global
      placement:
        constraints:
          - node.role == manager

volumes:
  mysql-data:

networks:
  my-network:

开始执行：

docker stack deploy wordpress --compose-file=docker-compose.yml 

运行正常：

删除wordpress项目

docker stack ps wordpress   查看项目
docker stack  rm wordpress 删除项目
删除项目也会把创建的网络一起删除

项目二：搭建投票系统

version: "3"
services:

  redis:
    image: redis:alpine
    ports:
      - "6379"
    networks:
      - frontend
    deploy:
      replicas: 2
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure

  db:
    image: postgres:9.4
    volumes:
      - db-data:/var/lib/postgresql/data
    networks:
      - backend
    deploy:
      placement:
        constraints: [node.role == manager]

  vote:
    image: dockersamples/examplevotingapp_vote:before
    ports:
      - 5000:80
    networks:
      - frontend
    depends_on:
      - redis
    deploy:
      replicas: 2
      update_config:
        parallelism: 2
      restart_policy:
        condition: on-failure

  result:
    image: dockersamples/examplevotingapp_result:before
    ports:
      - 5001:80
    networks:
      - backend
    depends_on:
      - db
    deploy:
      replicas: 1
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure

  worker:
    image: dockersamples/examplevotingapp_worker
    networks:
      - frontend
      - backend
    deploy:
      mode: replicated
      replicas: 1
      labels: [APP=VOTING]
      restart_policy:
        condition: on-failure
        delay: 10s
        max_attempts: 3
        window: 120s
      placement:
        constraints: [node.role == manager]

  visualizer:
    image: dockersamples/visualizer:stable
    ports:
      - "8080:8080"
    stop_grace_period: 1m30s
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    deploy:
      placement:
        constraints: [node.role == manager]

networks:
  frontend:
  backend:

volumes:
  db-data:[root@docker-host example-vote-app]

开始运行：

查看节点运行：

[root@docker-host example-vote-app]# docker stack ls
NAME                SERVICES            ORCHESTRATOR
example             6                   Swarm

docker stark service ps example

可视化监控：

也可以运行：

docker run -itd -p 5000:5000 -e HOST=192.168.205.10 -e PORT=5000 -v /var/run/docker.sock:/var/run/docker.sock manomarks/visualizer