Am 15.06.2015 um 16:35 schrieb Steve Litt:
> I know that every service has a "provides", that basically gives the
> service a uniformly agreed upon name. And it has zero to many
> "requires", which I believe means that the current service (call it A),
> requires another service (call it B), so it won't start A unless B is
> started. But then what does "after" mean? Does that mean *immediately*

In systemd "requires" is counter-intuitive: it does not say anything
about start order. It only says that the other service should also be
started eventually. If start order is important, then "requires" and
"after" must both be specified.