--On Wednesday, September 01, 2021 6:36 PM +0200 Leon Fauster via CentOS <centos at centos.org> wrote: > How to apply a "Requires" with an instantiated service. > > Example: > > a at .service > b.service > > a at .service is started as a at host1.service and b.service must be started > after a at host1.service but the unit will be differently parameterized > (depended of the region). So I want to generalize the requires statement. > > My dropin file in ./b.service.d/dep.conf looks like > > [Unit] > Requires="a@*.service" > > This just produces following error: > 'Failed to add dependency on "a@*.service", ignoring: Invalid argument' > > > I use also a Before=b.service statement for a at .service but that is not > enough. You might also ask on the systemd list: <https://lists.freedesktop.org/mailman/listinfo/systemd-devel>