How to access the VM created by docker's HyperKit?

DockerDocker MachineDocker for-Mac

Docker Problem Overview

Docker for Mac uses a Linux VM created by HyperKit for storing and running containers on Mac.

With Docker Toolbox, I can just open VirtualBox and access the docker-machine VM. But with Docker for Mac, how do I access the VM created by HyperKit?

Docker Solutions

Solution 1 - Docker

Update 2019-01-31, thanks to ru10's update, now there is a better way:

screen ~/Library/Containers/com.docker.docker/Data/vms/0/tty

Original Answer:

After a while, I found following way to get a shell of the VM that was created by HyperKit:

Run from terminal:

screen ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/tty

You will see an empty screen, then type enter, you will get a login prompt. Login as root and hit enter, you will get a shell (no password), you will gett the shell:

enter image description here

To exit the session, type Ctrl-A k (then y to confirm).

It is a little bit hacky, but it seems to work for now (Sep 2016) (Sep 2017).

Solution 2 - Docker

Mac OS High Sierra Docker version 18.06.0-ce-mac70 (26399)

screen ~/Library/Containers/com.docker.docker/Data/vms/0/tty

instead of

screen ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/tty

Solution 3 - Docker

According to this GitHub issue comment by a Docker maintainer, the recommended way to access the VM is through a privileged docker container.

> Try logging into the VM: (I recommend this instead of using screen on the TTY) > > $ docker run -it --privileged --pid=host justincormack/nsenter1

Solution 4 - Docker

In fact, the answer from augurar is the only working as of 2021 as smammy says, the other options are deprecated.

So:

$ docker run -it --privileged --pid=host justincormack/nsenter1

was the right answer and worked for me in MacOS Big Sur as of July 2021.

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionJifeng ZhangView Question on Stackoverflow
Solution 1 - DockerJifeng ZhangView Answer on Stackoverflow
Solution 2 - Dockerru10View Answer on Stackoverflow
Solution 3 - DockeraugurarView Answer on Stackoverflow
Solution 4 - DockerAthalasView Answer on Stackoverflow