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Cannot connect to the Docker daemon

I'm running Bamboo on an Ubuntu server, where I have installed Docker as well.
The docker command cannot be ran from within a bamboo plan, but there's no problem running it from the terminal.

The error in the build plan is /usr/bin/docker: Cannot connect to the Docker daemon. Is the docker daemon running on this host?. but in fact the daemon background process and the service are running and I am able to lift containers directly from terminal...

I have added the ubuntu user to the docker groups, so that the docker commands can be ran without sudo, but I suspect that the Bamboo plans are ran with some other user (which I am not sure how to find out), and that is why Bamboo cannot run the docker ... commands.

Any thoughts/suggestions?

3 answers

1 accepted

1 vote
Answer accepted

Hi,

This happens because the user running bamboo, usually bamboo in unable to connect to docker using the unix socket file, usually /var/run/docker.sock, which is owned by root.

# ls -l /var/run/docker.sock
srw-rw---- 1 root root 0 Dec 11 18:06 /var/run/docker.sock

You may change the group of this file to dockerroot and add the bamboo user to this group.

# chgrp bambooroot /var/run/docker.sock
srw-rw---- 1 root dockerroot 0 Dec 11 18:06 /var/run/docker.sock

# usermod -a -G dockerroot bamboo
# groups bamboo
bamboo : bamboo dockerroot
 

 

That's it ! You may enjoy running docker as user bamboo now, from terminal as well as bamboo plan.

Good Luck!

Sudesh K Kantila

Thanks Sudesh, 

Works now exactly like you described !

C.heers

1 vote

Hello Galin,

You could open a Terminal and check the user running the Bamboo process:

ps aux | grep bamboo

Also, is docker located under /usr/bin/docker ? If you list the directory, under which user/group the same is under?

ls -l /usr/bin/docker

Kind regards,
Rafael P. Sperafico

Hi Galin,

I suffer exactly the same. under the bamboo user i even can run the same command that the log file produces.

Also tried variations like:
bin/sudo /usr/bin/docker 
sudo /usr/bin/docker 
docker  

add user bamboo to docker group

all to no avail.

Hope you solved it.

Regards,
Corné

Hi Corne,

See my reply to the initial question.

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