There is a README file on CentOS 7 in /etc/init.d that says
Note that traditional init scripts continue to function on a systemd system. An init script /etc/rc.d/init.d/foobar is implicitly mapped into a service unit foobar.service during system initilization
So I dropped my file in the above directory, rebooted and my item did not start.
doing “systemctl list-unit-files | grep myservice” did now show anything.
What piece did I miss?
I used to use rc.local and just need a script to run AFTER everything else has ran. no special start/stop/reload is needed… just a simple script.