[Pkg-dns-devel] Bug#826241: unbound: Provide $named facility under systemd

[biebl at debian.org]

Package: unbound
Version: 1.5.8-1
Severity: normal
User: pkg-systemd-maintainers at lists.alioth.debian.org
Usertags: insserv-removal

Hi,

your package unbound ships a insserv.conf configuration in
/etc/inserv.conf.d/ or is listed in /etc/insserv.conf to provide the
$named LSB/SysV facility.

The $named facility is typically defined when full host/network name
resolution is available. Other SysV init scripts depending on $named are
ordered after your service then.

Under systemd the $named facility is mapped to the nss-lookup.target,
see [1] for more details.  The equivalent to the insserv configuration
under systemd is pulling in nss-lookup.target and ordering your service
before that target. This dependency is currently being automatically
generated via a generator [2], but this requires an intrusive patch
which we would like to drop.

So instead we would like services to declare this dependency explicitly.
If your package already ships a native .service file, please add the
following to the [Unit] section:

Wants=nss-lookup.target
Before=nss-lookup.target

If your package does not yet ship a native .service file, this would be
a good occasion to do so and the Debian pkg-systemd team is glad to
assist you.

But you can also extend SysV init scripts with that information using
the drop-in mechanism [3]. For an SysV init script named
/etc/init.d/foo, you create a directory
/lib/systemd/system/foo.service.d/ and a place a .conf file in there.
In this case I would suggest naming it named.conf, which would make it
/lib/systemd/system/unbound.service.d/named.conf
This file should contain:

[Unit]
Wants=nss-lookup.target
Before=nss-lookup.target


If you have further questions please don't hesitate to ask.

Thanks for considering.


Michael,
on behalf of the pkg-systemd team.


[1] https://www.freedesktop.org/software/systemd/man/systemd.special.html#nss-lookup.target
[2] https://www.freedesktop.org/software/systemd/man/systemd.generator.html
[3] https://www.freedesktop.org/software/systemd/man/systemd.unit.html