docker-machine boot2docker root password

Question

Haven't found an answer anywhere... I created a VM (boot2docker) using docker-machine. I need to edit some files using root.

What is the root password in boot2docker?

Answered here: http://stackoverflow.com/questions/24286007/how-do-i-ssh-into-the-boot2docker-host-vm-that-the-vagrant-1-6-docker-provider-s — eMad, Mar 16 '16 at 16:08
@MediaVince that works, but where does that information come from? — Rafael Eyng, Jan 09 '19 at 23:14
Nevermind, the reference is [boot2docker README](https://github.com/boot2docker/boot2docker/blob/master/README.md#ssh-into-vm), as said in [here](https://stackoverflow.com/questions/32646952/docker-machine-boot2docker-root-password#comment92080055_47307040) — Rafael Eyng, Jan 09 '19 at 23:15

Nick De Greek · Accepted Answer · 2018-10-31T12:40:04.343

70

If you only have a single docker machine, you simply do:

$ docker-machine ssh

If you have multiple machines, you need to find your "machine name" first:

$ docker-machine ls
NAME      ACTIVE   DRIVER       STATE     URL                         SWARM   DOCKER    ERRORS
default   *        virtualbox   Running   tcp://192.168.99.101:2376           v1.10.2

From the above, you can see that default is the name of your machine and you can ssh as follows:

$ docker-machine ssh default

When you're in, it's a simple case of sudo-ing to root

docker@default:~$ sudo -i
Boot2Docker version 1.10.2, build master : 611be10 - Mon Feb 22 22:47:06 UTC 2016
Docker version 1.10.2, build c3959b1
root@default:~#

Edited: Also, as @MediaVince mentioned you can use the following credentials:

user: docker

pwd: tcuser

edited Oct 31 '18 at 12:40

answered Mar 08 '16 at 11:04

Nick De Greek

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why does -i work ? I know it means "simulate initial login", but what is the exact mechanism ? – Andrei Jan 23 '17 at 19:12
This doesn't actually answer the user's question. The answer was in his question's comment. – TimChandler Jan 26 '17 at 06:12
Sorry for the late reply. The -i executes a login shell, similar to the user login in. The manual includes a more complete explanation: Run the shell specified by the target user's password database entry as a login shell. This means that login-specific resource files such as .profile or .login will be read by the shell. If a command is specified, it is passed to the shell for execution via the shell's -c option. If no command is specified, an interactive shell is executed. – Nick De Greek May 20 '18 at 18:50

score 31 · Answer 2 · answered Sep 23 '15 at 09:43

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just type

$ docker-machine ssh your_environment

and then to be root

$ sudo -i

hope it helps

answered Sep 23 '15 at 09:43

grimabe

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why does -i work ? I know it means "simulate initial login", but what is the exact mechanism ? – Andrei Jan 23 '17 at 19:12

score 21 · Answer 3 · answered Nov 15 '17 at 12:08

21

Login via ssh as docker user:

$ ssh docker@<docker-machine-ip>

Password: tcuser

Then you can change on root user, just run sudo su root

answered Nov 15 '17 at 12:08

giokoguashvili

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This is also documented at https://github.com/boot2docker/boot2docker/blob/master/README.md – Brian Ng Sep 29 '18 at 19:23

score 0 · Answer 4 · answered Sep 18 '15 at 09:08

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Ok the key was not to do "su root" but rather "su sudo". It then doesn't ask for root password.

answered Sep 18 '15 at 09:08

user1340582

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For me it was rather `sudo su`. `su sudo` gives `su: unknown user sudo` – Fabian Braun Feb 01 '18 at 13:21

docker-machine boot2docker root password

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