Hi, On Mon, Nov 25, 2019 at 02:07:23PM +0100, Jörg Weinhardt wrote: > Hi, > > the behavior of systemd is not quite clear to me: > I have a service which requires another service to be started and running, > so I use a Requires= dependency to the required service. > But if the required service does not exist at all, there is no error message > from systemd. > e.g. > > Requires=xyz.service > > produces no complaint and starts the service even if there is no xyz.service > Is this the normal behavior or can I configure systemd to throw an error in > this case? > > If I write > "Requires=xyz" > > there will be a message: Failed to add dependency on xyz, ignoring: Invalid > argument > Does that error mean that "xyz" is not a valid unit name?
I guess all these are by design. Maybe you need Wants instead of Requires in the service file. See: https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Requires= and https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Wants= and possibly even https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Before= Cheers, -Mikko > > Thank you, > Joerg > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
