I want to reload (not restart!) a group of services upon an event.
For example, if I update my SSL certificates, I want every service that uses them reloaded (
postfix come to mind). Neither I want to remember which services on a given server use SSL certificates. It should be enough to have them grouped when they were configured.
On the other hand, I'd like to avoid changing
.service files provided with the packages, because this will require manual intervention during updates.
How do I accomplish that?
There is an option to stop a group of services on request, but this would make them inaccessible for a second or two, or worse - they may stay down until fixed. I can't afford that.