Docker机器如何标记为活动？ [英] How is a Docker Machine marked as active?

问题描述

我正在通过Docker Machine用户指南，在 https://docs.docker.com/v1.5 / machine / 。

它说：

 您可以通过再次运行docker-machine ls命令来查看您创建的计算机：
 
 $ docker-machine ls 
名称ACTIVE DRIVER STATE URL 
 dev * virtualbox运行tcp： //192.168.99.100:2376 
 
 dev旁边的*表示它是活动主机。 
  

当我运行这个我没有看到任何机器旁边的*。我需要做什么才能使机器被标记为活动的？有没有任何好处？

例如，我在Windows 10上运行Docker Machine，通过使其处于活动状态，这意味着我不必继续指定我的命令中的机器名称，如 docker-machine env dev

解决方案

我认为只运行以下命令应该可以工作：

  $ eval $（docker-machine env default）
  

（其中默认是机器的名称） p>

*的原因是告诉您当前连接的机器，例如如果您运行的Docker引擎将要与其通信的 docker ps

在当前版本的Docker机器中，相信您必须始终指定名称。

I am working through the Docker Machine User Guide over at https://docs.docker.com/v1.5/machine/.

It says:

You can see the machine you have created by running the docker-machine ls command again:

  $ docker-machine ls
  NAME      ACTIVE   DRIVER       STATE     URL
  dev       *        virtualbox   Running   tcp://192.168.99.100:2376

The * next to dev indicates that it is the active host.

When I run this I don't see the * next to any machines. What do I need to do to make the machine be marked as active? Are there any benefits to this?

For example, I am running the Docker Machine on Windows 10, by making it active does it mean I don't have to keep specifying the machine name in my commands such as docker-machine env dev

解决方案

I think just running the following command should work:

$ eval $(docker-machine env default)

(Where default is the name of the machine).

The reason for the * is to tell you which machine you're currently connected to e.g. if you run docker ps which Docker engine will it talk to?

In the current version of Docker machine, I believe you have to always specify the name.

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