[systemd-devel] Is it possible to load unit files from paths other than default paths ?

[Raghavendra. H. R]

Thank you for the suggestions.
But with this suggestion i.e., generator file, I again need to add/modify
some files.

All I'm looking into is I mount my binaries and unit files under /mnt. By
setting any environment variable like SYSTEMD_UNIT_PATH, systemd should
pick the unit files from /mnt and execute my binaries as per the
instructions given in unit file.

In normal init.d systems, we have environment variables like PATH &
LD_LIBRARY_PATH.
No matter where I place my new executable or library, adding new path into
these environment variables is enough to execute or link the library.

Probably this kind of facility is not available in Systemd init systems.

--
Regards,

Raghavendra. H. R
(Raghu)

On Wed, Sep 21, 2016 at 10:40 PM, Andrei Borzenkov <arvidjaar at gmail.com>
wrote:

> 21.09.2016 14:26, Raghavendra. H. R пишет:
> > Hi,
> >
> > I'm newbie with systemd boot system and I need help in resolving one
> issue.
> >
> > I would like to create a service under a customized path Eg:/mnt and
> > systemd should be able to pick my unit file from this.
> >
> > I tried by setting *Environment=SYSTEMD_UNIT_PATH=/mnt *from the
> > console
>
> This should be set in environment of srarted systemd, which in case of
> systemwide init effectively means either you need to use some wrapper to
> set it and exec systemd or hack initrd.
>
> Also SYSTEMD_UNIT_PATH does not really play nicely with priorities of
> unit locations (run-time vs. sysadmin vs. shipped).
>
> May be it is simpler to install generator that copies your unit
> definition in standard location. This guarantees it is available before
> systemd starts.
>
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