redis - 使用 Ansible 和 Docker 部署/运行 Redis 服务

Question

我正在使用 Ansible docker module设置 Redis 服务(请参阅下面的 ansible 角色)

- hosts: redis
  roles:
  - role: angstwad.docker_ubuntu
    sudo: true
  tasks:
  - name: data container
    sudo: true
    docker:
      name: redis-data
      image: busybox
      state: started
      volumes:
       - /data/redis
  - name: redis container
    sudo: true
    docker:
      name: redis-service
      image: redis:3
      command: redis-server --appendonly yes
      state: started
      expose: 6379
      volumes_from:
       - redis-data

配置后，redis-service 容器已启动，但是当我尝试使用 redis-cli 连接到 redis 时，出现以下错误:

vagrant@dev1:~$ redis-cli
Could not connect to Redis at 127.0.0.1:6379: Connection refused

注意:redis-service 似乎已启动并正在运行:

vagrant@dev1:~$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
3e8f27b14479        redis:3             "/entrypoint.sh redis"   12 minutes ago      Up 12 minutes       6379/tcp            redis-service

vagrant@dev1:~$ docker logs 3e8f27b14479
...
1:M 02 Sep 15:41:16.532 * The server is now ready to accept connections on port 6379

您知道可能导致问题的原因吗？

Answer 1

终于找到问题了:ports属性也必须设置(不仅仅是expose)

- hosts: redis
  roles:
  - role: angstwad.docker_ubuntu
    sudo: true
  tasks:
  - name: data container
    sudo: true
    docker:
      name: redis-data
      image: busybox
      state: started
      volumes:
       - /data/redis
  - name: redis container
    sudo: true
    docker:
      name: redis-service
      image: redis:3
      command: redis-server --appendonly yes
      state: started
      expose: 6379
      ports:
       - 6379:6379
      volumes_from:
       - redis-data