Arch Linux

Rone

Member

Registered: 2015-04-27

Posts: 35

[Solved] How to pass parameters to docker server ?

Hello,

I'm new to docker, and i would like to know the recommended way to configure it with arch distro.

To explain, i read the wiki about docker and some other articles on some blogs, and :

- the wiki shows how to send parameters to docker server at startup, configuring a .conf file saved in path  /etc/systemd/system/docker.service.d/

See : https://wiki.archlinux.org/index.php/Do … .x_and_LXC

- others discussions/docs says to put options to pass to docker server in the DOCKER_OPTS variable set in the file /etc/default/docker

Which way do i have to take ?

Many thanks

Rone.

Last edited by Rone (2015-05-08 14:44:42)

firecat53

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From: Lake Stevens, WA, USA

Registered: 2007-05-14

Posts: 1,542

Website

Re: [Solved] How to pass parameters to docker server ?

For Arch the first method is the correct way (systemd sevice override file).

Scott

---

Github

Rone

Member

Registered: 2015-04-27

Posts: 35

Re: [Solved] How to pass parameters to docker server ?

For Arch the first method is the correct way (systemd sevice override file).

Scott

Yes, your answer confirm what i have tested.

I have created a named my_docker_options.conf configuration file, that i use to set the DNS search domain (--dns) and Root of the docker runtime (-g).

$ sudo mkdir -p /etc/systemd/system/docker.service.d
$ sudo touch /etc/systemd/system/docker.service.d/my_docker_options.conf
$ sudo vi /etc/systemd/system/docker.service.d/my_docker_options.conf

And with /etc/systemd/system/docker.service.d/my_docker_options.conf  containing my options for docker service startup :

[Service]
ExecStart=
ExecStart=/usr/bin/docker -d -g /srv/docker2 --dns=8.8.8.8

Then reloaded and restarted docker.service :

$ sudo systemctl daemon-reload && sudo systemctl restart docker.service

And i could verify that options set for docker daemon had actually been taken into account :

$ systemctl status docker

● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/docker.service.d
           └─docker_settings.conf
   Active: active (running) since Fri 2015-05-08 12:21:13 RET; 6h ago
     Docs: http://docs.docker.com
 Main PID: 1955 (docker)
   Memory: 10.1M
   CGroup: /system.slice/docker.service
           └─1955 /usr/bin/docker -d -g /srv/docker2 --dns=8.8.8.8

Last edited by Rone (2015-05-09 10:12:51)

Rone

Member

Registered: 2015-04-27

Posts: 35

Re: [Solved] How to pass parameters to docker server ?

For Arch the first method is the correct way (systemd sevice override file).

Scott

Didn't known about systemd sevice override file ;  suppose that the wiki explains it relatively to systemd article.

Rone

Member

Registered: 2015-04-27

Posts: 35

Re: [Solved] How to pass parameters to docker server ?

See also this thread : https://bbs.archlinux.org/viewtopic.php?id=190391. Sorry, i didn't seen it before posting.

Many thanks @firecat53.

Last edited by Rone (2015-05-08 15:08:48)