Docker组成的命名挂载卷 [英] Docker-compose named mounted volume

问题描述

为了跟踪docker-compose使用的卷，我想使用命名卷。这对于普通卷非常有用，例如

In order to keep track of the volumes used by docker-compose, I'd like to use named volumes. This works great for 'normal' volumes like

version: 2
services: 
  example-app:
    volume:
      -named_vol:/dir/in/container/volume
volumes:
  named_vol:

但是我不知道安装本地主机时如何使其工作。
我正在寻找类似的东西：

But I can't figure out how to make it work when mounting the local host. I'm looking for something like:

version: 2
services: 
  example-app:
    volume:
      -named_homedir:/dir/in/container/volume
volumes:
  named_homedir: /c/Users/

或

version: 2
services: 
  example-app:
    volume:
      -/c/Users/:/home/dir/in/container/ --name named_homedir

这是否有可能，或者我是否为装入的卷坚持使用匿名卷？

is this in any way possible or am I stuck with anonymous volumes for mounted ones?

推荐答案

您可以在GitHub问题中阅读，安装命名卷 现在是一个东西……从1.11或1.12开始。） 特定于驱动程序的选项已记录在案。 GitHub线程上的一些注释：

As you can read in this GitHub issue, mounting named volumes now is a thing … since 1.11 or 1.12.). Driver specific options are documented. Some notes from the GitHub thread:

docker volume create --opt type=none --opt device=<host path> --opt o=bind

如果主机路径不存在，

If the host path does not exist, it will not be created.

选项将按字面值传递给mount syscall。我们可能为某些类型添加特殊情况，因为它们使用起来很笨拙……就像nfs示例[上面引用]。

Options are passed in literally to the mount syscall. We may add special cases for certain "types" because they are awkward to use... like the nfs example [referenced above].

^{– @ cpuguy83}

要解决有关如何在撰写中使用它的特定问题，请在卷部分：

To address your specific question about how to use that in compose, you write under your volumes section:

my-named-volume:
     driver_opts:
           type: none
           device: /home/full/path #NOTE needs full path (~ doesn't work)
           o: bind

这是因为cpuguy83在链接的github线程中写道，选项（在后台）直接传递给 mount 命令。

This is because as cpuguy83 wrote in the github thread linked, the options are (under the hood) passed directly to the mount command.

编辑：评论者：…

• …@ villasv，您可以使用 $ {PWD} 作为相对路径。



• …@ mikeyjk，您可能需要删除先前存在的卷：

• …@villasv, you can use ${PWD} for relative paths.

• …@mikeyjk, you might need to delete preexisting volumes:

docker volume rm $(docker volume ls)

... @ Camron Hudson，如果您没有这样的文件或目录错误出现，您可能要阅读此SO问题/答案，因为Docker不遵循符号链接，并且本地文件系统可能存在权限问题。

…@Camron Hudson, in case you have no such file or directory errors showing up, you might want to read this SO question/ answer as Docker does not follow symlinks and there might be permission issues with your local file system.

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