What are the correct commands in rpm.spec to set-up the systemd preset

Question

I have a few units in my program, such as:

• program.service
• program-cleanup.service
• program-cleanup.timer
• ...

As well as a 'program-cleanup.preset' file which just says:

enable program-cleanup.timer

I am having trouble understanding how I should be setting up the files here. Currently my rpm.spec runs the following commands:

...
install -D -m 0644 %{_sourcedir}/build/program.service %{_unitdir}/program.service
install -D -m 0644 %{_sourcedir}/build/program-cleanup.service %{_unitdir}/program-cleanup.service
install -D -m 0644 %{_sourcedir}/build/program-cleanup.timer %{_unitdir}/program-cleanup.timer
install -D -m 0644 %{_sourcedir}/build/program-cleanup.preset %{_presetdir}/program-cleanup.preset

Do I need to run a systemctl preset program-cleanup.preset in the %post part of the .spec file? If I add more presets, would I have to add one more line per preset?

question from:https://stackoverflow.com/questions/65661946/what-are-the-correct-commands-in-rpm-spec-to-set-up-the-systemd-preset

Answer 1

I personally haven't used preset files before, but they look interesting. What seems to be a good setup here (I mention only the relevant parts):

%install
install -D -m 0644 %{_sourcedir}/build/program-cleanup.preset %{_presetdir}/program-cleanup.preset

%post
systemd preset program-cleanup.preset

%preun
if [ $1 -eq 0 ] ; then
  # really uninstalling, not upgrading:
  # probably you might want to stop and disable your units when uninstalling:
  systemctl stop program.service
  systemctl disable program.service
  ...
fi

%files
%{_presetdir}/program-cleanup.preset