systemd startup script

[Nagy Ákos]

2016. 05. 06. 15:34 keltezéssel, Andrew Shadura írta:
> On 06/05/16 14:25, Nagy Ákos wrote:
>> 2016. 05. 06. 14:58 keltezéssel, Georges Racinet írta:
>>> Hi,
>>>
>>> On 05/06/2016 01:51 PM, Nagy Ákos wrote:
>>>> Hi,
>>>>
>>>> I wrote a systemd startus script, and test it on Ubuntu 16.04.
>>>> I try to create a pull request, but i'm not familiar with it.
>>> I'm just a reader here, but I wonder why you use the forking style and
>>> not simply run in the foreground and let systemd handle the
>>> daemonization (as you did with celery)
>> I don't know exacly the difference between simple and forking...
>> First I create script for kallithea, and I left with type=forking, but
>> probably work with type=simple too.
>> Celeryd work only with type=simple.
> Forking means the daemon forks into the background (daemonises), so
> systemd has to track that and find the forked process, which is a bit
> error-prone. Simple means the daemon doesn't fork but stays in
> foreground, and systemd manages it and puts it into the background on
> its own. Simple is better for systemd because it's more reliable;
> besides, systemd is then able to capture the stderr/stdout and direct it
> to the system journal automatically.
>
> Do we really need to provide a separate unit for celeryd? Is it not
> possible to start it in some way other than by running paster?
Maybe with ExecStartPre= but with simple copying the ExecStart from 
celeryd.service don't work.
I try kallithea.service with Type=simple, but don't work, only with forking.

-- 
Nagy Ákos
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