如何在主机上为 docker-compose.yml 中的命名卷设置路径 [英] How to set a path on host for a named volume in docker-compose.yml

问题描述

下面的示例创建 dbdata 命名卷并在 db 服务中引用它:

Example below creates dbdata named volume and references it inside db service:

version: '2'
services:
  db:
    image: mysql
    volumes:
      - dbdata:/var/lib/mysql
volumes:
  dbdata:
    driver: local

(来自https://stackoverflow.com/a/35675553/4291814)

我可以看到卷的路径默认为:

I can see the path for the volume defaults to:

/var/lib/docker/volumes/_dbdata

我的问题是如何在主机上为 dbdata 卷配置路径?

My question is how to configure the path on host for the dbdata volume?

推荐答案

通过 local 卷驱动程序可以使用任意挂载；通过使用绑定挂载，您可以完全实现这一点.

With the local volume driver comes the ability to use arbitrary mounts; by using a bind mount you can achieve exactly this.

要设置挂载到 /srv/db-data 的命名卷，您的 docker-compose.yml 将如下所示:

For setting up a named volume that gets mounted into /srv/db-data, your docker-compose.yml would look like this:

version: '2'
services:
  db:
    image: mysql
    volumes:
      - dbdata:/var/lib/mysql
volumes:
  dbdata:
    driver: local
    driver_opts:
      type: 'none'
      o: 'bind'
      device: '/srv/db-data'

我没有用 compose 文件格式的第 2 版对其进行测试，但是 https://docs.docker.com/compose/compose-file/compose-versioning/#version-2 不表示它不应该工作.

I have not tested it with the version 2 of the compose file format, but https://docs.docker.com/compose/compose-file/compose-versioning/#version-2 does not indicate, that it should not work.

我也没有在 Windows 上测试过...

I've also not tested it on Windows...

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