Daemon configuration Debian


I recently installed docker engine on a Debian Jessie. I’m not a linux nor docker expert but I couldn’t manage to configure docker daemon. I did the install as stated in the documentation using apt-get.

I tried putting configuration in /etc/default/docker setting a line with DOCKER_OPTS="…" but even after a restart with “service docker restart” it doesn’t seems to take into account my configs.

Has anyone an idea?
Thank you for your help.


Whats the configuration changes you have made to /etc/default/docker? Also after restarting docker is the service coming up?


I set up secured https on daemon. So --tlsverify… -H tcp://…

Yes it does restart well. Yes I’m sure my options are ignored I can’t connect with clients on the port opened. I can see the command used with ps and my options are not there.


This is because Debian is using Systemd and it by default doesnt respect /etc/default/docker file. So for you to get this work you will have to create a systemd dropin file and make the changes in that new file.

Please go through this article for more details. Please let me know if you still need any help.



Yes I finally found out. Very sad that this file is created on Debian but not used and more important that the documentation on Debian install doesn’t point to that page.

@ranjandas I know this is an old post, that link is dead to systemd issues. I have just tried to install on a brand new Jessie facing the same problems.
Any guidance appreciated