[mythtv-users] Systemd File For MythTV on Fedora Questions
george.galt at gmail.com
Mon May 14 15:15:28 UTC 2012
On Mon, May 14, 2012 at 10:51 AM, Richard Shaw <hobbes1069 at gmail.com> wrote:
> On Mon, May 14, 2012 at 9:40 AM, George Galt <george.galt at gmail.com> wrote:
>> I've been working on a .service script for the mythbackend on systemd
>> for my Fedora 16 x86_64 backend, which is installed using Axel's
>> ATrpms repositories. The script so far is below and owes a lot to the
>> discussion last week. Currently, this file works for me.
>> I've got a few questions that I'm hoping someone can answer:
>> 1) Permissions. The script below runs the backend as user "mythtv"
>> rather than "root". I've set permissions for the directories
>> containing the recordings/videos, coverart (etc), logs, database
>> backup, and pid file to user=mythtv, but is there anything else that I
>> might be missing or anything that I should look out for? So far, this
>> seems to work, but if there is something that is run infrequently I
>> might not have seen it yet.
> It has not been necessary to run mythbackend as root for quite some
> time. Just make sure the mythtv user is in the audio and video groups
> for access to those devices.
> It shouldn't be necessary to change permissions on the physical
> database since mythtv logs in through the server interface.
> Additionally, you don't need to worry about the PID file if you use
> Type=simple, see below.
>> 2) service type. The RPMfusion script and the script on the mythtv
>> wiki designate the service as "type=simple". RG Newbury's version
>> (from last week's discussion) used "type=forking". I find that if I
>> try to use "type=simple" the startup fails with "systemd:
>> mythbackend.service stopping timed out. Killing." in
>> /var/log/messages. Does anyone know why this might be? I find the
>> description here:
>> http://fedoraproject.org/wiki/Packaging:Systemd#.5BService.5D to be
> If you use "Type=simple" then you need to drop the --daemon options.
> Simple is preferred over forking in systemd. Basically systemd picks
> up the PID when it starts the backend. If you use --daemon then
> mythbackend forks so then you have to use a PID file.
>> # NOTE: using the "mythtv" user, NOT root.
> Using both the Environment and EnvironmentFile options is redundant.
> EnvrionmentFile is more for backwards compatibility, so drop that in
> favor of Environment.
>> ExecStart=/usr/bin/mythbackend --daemon --logpath /var/log/mythtv
>> --pidfile /var/log/mythtv/mythbackend.pid
> To use Type=simple, drop the --daemon and --pidfile options.
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Thanks for the detailed comments!! I'll see if I can't put them into
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