014 docker stack 编排服务

1 准备yml文件

    version：docker编排任务的版本，参考官方说明，这个不是本身定义的，，，，

    image：指定镜像

    volumes：挂载日志目录，若是宿主机上文件夹不存，启动时会报错：invalid mount config for type…

    ports：映射端口号，注意多个service的端口号不要相同

    replicas：镜像数

    placement.constraints：指定工做节点，对应的是：[node.role == manager]

    文档：https://docs.docker-cn.com/compose/compose-file/

version: '3'
services:
  test01:
    image: 192.168.20.201:5000/ipweb
    volumes:
      - /home/log:/home/log
    networks:
      - central
    ports: 
      - 8088:8080
    deploy:
      replicas: 3
      placement:
        constraints: [node.role == worker]
        
  test02:
    image: registry.cn-hangzhou.aliyuncs.com/goldleaf/test:ipweb
    volumes:
      - /home/log:/home/log
    networks:
      - central
    ports:
      - 8089:8080
    deploy:
      replicas: 3
      placement:
        constraints: [node.role == worker]

networks:
  central:
    external:
      name: central

2 编排服务

    2-1 启动

docker stack deploy -c docker-stack.yml gh

    2-2 查看全部stack

docker stack ls

    2-3 查看某一stack中的全部服务

docker stack services gh

3 访问测试

curl 192.168.20.201:8088
curl 192.168.20.201:8089