docker - docker 堆栈:Redis在工作节点上不起作用

我刚刚完成了docker文档，并在aws(http://13.127.150.218，http://13.235.134.73)上创建了两个实例。第一个是经理，第二个是 worker 。以下是我用来部署的组合文件

version: "3"
services:
  web:
    # replace username/repo:tag with your name and image details
    image: username/repo:tag
    deploy:
      replicas: 5
      restart_policy:
        condition: on-failure
      resources:
        limits:
          cpus: "0.1"
          memory: 50M
    ports:
      - "80:80"
    networks:
      - webnet
  visualizer:
    image: dockersamples/visualizer:stable
    ports:
      - "8080:8080"
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    deploy:
      placement:
        constraints: [node.role == manager]
    networks:
      - webnet
  redis:
    image: redis
    ports:
      - "6379:6379"
    volumes:
      - "/home/docker/data:/data"
    deploy:
      placement:
        constraints: [node.role == manager]
    command: redis-server --appendonly yes
    networks:
      - webnet
networks:
  webnet:

在这里，redis服务具有约束使其只能在管理器节点上运行。现在，我的问题是，如何在工作实例上使用Web服务来使用Redis服务。

最佳答案

您需要在所有容器中使用hostname参数，因此您可以使用此值从worker访问服务或从worker访问manager上的服务。

version: "3"
services:
  web:
    # replace username/repo:tag with your name and image details
    image: username/repo:tag
    hostname: "web"
    deploy:
      replicas: 5
      restart_policy:
        condition: on-failure
      resources:
        limits:
          cpus: "0.1"
          memory: 50M
    ports:
      - "80:80"
    networks:
      - webnet
  visualizer:
    image: dockersamples/visualizer:stable
    hostname: "visualizer"
    ports:
      - "8080:8080"
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    deploy:
      placement:
        constraints: [node.role == manager]
    networks:
      - webnet
  redis:
    image: redis
    hostname: "redis"
    ports:
      - "6379:6379"
    volumes:
      - "/home/docker/data:/data"
    deploy:
      placement:
        constraints: [node.role == manager]
    command: redis-server --appendonly yes
    networks:
      - webnet
networks:
  webnet:

在成瘾中，如果您使用portainer而不是可视化工具，则可以使用更多选项来控制SWARM堆栈:

https://hub.docker.com/r/portainer/portainer

BR

卡洛斯