how to get rid of Mysql systemctl

when you say its taken care of automatically now, what do you mean exactly?  Are you saying that readynasd sweeps through the /apps dir and looks for .service files and copies them into /lib/systemd/system/ ??  how exactly do addon service files get propogated into systemd?

Basically I'm trying to find out where service unit files can reside that may get implictly added back to systemd and enabled.  It sounds like if they are in an app's working dir, then this will be the case?

I really like systemd a lot better then the old init.d approach.  systemd by itself is very clear and explicit .  Init.d can be anybody's guess  depending on what someone writes in the init.d script.  I can understand why some legacy products will keep using init.d  What isn't clear to me is why and how init.d works together with systemd.