I'm certainly not a layperson, but systemd frequently confuses me.
I want to edit a service to harden it for example. Oh, wait I shouldn't edit it directly with vi? Because it gets overwritten by package updates. Okay, makes sense, I need to use systemctl edit instead. But that opens a file that has everything commented out. Do I uncomment the [Unit] heading? What do I need to keep and where do I add my additions? I recall there being a comment at the start of this file, but unless I'm misremembering it doesn't answer that.
All I ask of it to do one thing - start something.service after other.service. yet it just refuses to order them this way. Why? I have no idea. I also have no idea where to start debugging a problem like this. There's a billion ways to try and do this after all: do I add Before=something to other.service? Do I add After=other to something.service? Both? Wants=something?
I want to edit a service to harden it for example. Oh, wait I shouldn't edit it directly with vi? Because it gets overwritten by package updates. Okay, makes sense, I need to use systemctl edit instead. But that opens a file that has everything commented out. Do I uncomment the [Unit] heading? What do I need to keep and where do I add my additions? I recall there being a comment at the start of this file, but unless I'm misremembering it doesn't answer that.
All I ask of it to do one thing - start something.service after other.service. yet it just refuses to order them this way. Why? I have no idea. I also have no idea where to start debugging a problem like this. There's a billion ways to try and do this after all: do I add Before=something to other.service? Do I add After=other to something.service? Both? Wants=something?