[mythtv-users] MythTV on SUSE Leap 15.0

[Stephen Worthington]

On Wed, 25 Jul 2018 10:07:58 +0100, you wrote:

>On 25/07/18 09:41, Paul Gardiner wrote:
>> On 25/07/2018 02:34, Stephen Worthington wrote:
>>> On Tue, 24 Jul 2018 23:14:25 +0100, you wrote:
>>>
>>>> On 24/07/2018 19:46, mythtv at howorth.org.uk wrote:
>>>>> systemd[1]: /usr/lib/systemd/system/mythbackend.service:11: Invalid
>>>>> user/group name or numeric ID: Productivity/Multimedia/Video/Players
>>>>
>>>> Oh yes, I forgot that. I had to edit
>>>> /usr/lib/systemd/system/mythbackend.service and put the correct values
>>>> of user and group.
>>>
>>> If SUSE Leap 15.0 works like Ubuntu, then it is a bad idea to manually
>>> change any files in /usr/lib/systemd/system/, as they will be
>>> overwritten by the installation of a new version of the package that
>>> installed them.  The correct way to override a systemd unit file is to
>>> use the override system provided by systemd.  This involves creating a
>>> directory in another location to contain override files for the unit.
>>> In Ubuntu, these override directories are in /etc/systemd/system.  So
>>> I have a directory /etc/systemd/system/mythtv-backend.service.d which
>>> contains a file mythtv-backend-override.conf and my override settings
>>> are in that file.  You can have as many *.conf files in the directory
>>> as you like - they will be read and used in the order they are read to
>>> override the base unit file settings.
>>>
>>> The easy way to create an override file is to use the command provided
>>> by systemd:
>>>
>>> systemctl edit mythbackend.service
>>>
>>> That will create a valid override file and run your default editor on
>>> it.  To change the user and group you would put something like this in
>>> your override file:
>>>
>>> [System]
>>> User=mythtv
>>> Group=mythtv
>>
>> Thanks. That's really useful to know. I had a feeling that altering 
>> the main file was not ideal, although in this case, the main file 
>> looks to be broken. I suppose it may be correct but created with the 
>> intention that the package would also supply an override file.
>>
>> Cheers,
>>     Paul.
>> _______________________________________________
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>>
>I tried this, but get the following error when the service starts:
>
>
>? mythbackend.service - MythTV backend service
>
>Loaded: loaded (/usr/lib/systemd/system/mythbackend.service; enabled; 
>vendor preset: disabled)
>
>Drop-In: /etc/systemd/system/mythbackend.service.d
>
>??override.conf
>
>Active: failed (Result: exit-code) since Wed 2018-07-25 09:49:43 BST; 
>14min ago
>
>Main PID: 15317 (code=exited, status=216/GROUP) Jul 25 09:49:43 
>linux-ticd systemd[1]: Started MythTV backend service.
>
>Jul 25 09:49:43 linux-ticd systemd[15317]: mythbackend.service: Failed 
>to determine group credentials: No such process
>
>Jul 25 09:49:43 linux-ticd systemd[1]: mythbackend.service: Main process 
>exited, code=exited, status=216/GROUP
>
>Jul 25 09:49:43 linux-ticd systemd[1]: mythbackend.service: Unit entered 
>failed state.
>
>Jul 25 09:49:43 linux-ticd systemd[1]: mythbackend.service: Failed with 
>result 'exit-code'.
>
>Jul 25 09:55:09 linux-ticd systemd[1]: 
>/etc/systemd/system/mythbackend.service.d/override.conf:1: Unknown 
>section 'System'. Ignoring.
>
>Jul 25 09:58:06 linux-ticd systemd[1]: 
>/etc/systemd/system/mythbackend.service.d/override.conf:1: Unknown 
>section 'System'. Ignoring.

Sorry, that is my fault.  I mis-typed the settings.  It should be
[Service], not [System].

Also, you do need to check the user and group.  SUSE may not have a
mythtv group.  It should have a mythtv user, but check that too.

To list all the users and groups:

cut -d: -f1 /etc/passwd
cut -d: -f1 /etc/group

If SUSE does not have a mythtv group, you may need to create one if
there is not one with the right permissions.  The video group may be
sufficient.