rc.d scripts are a System V Unix type thing, OpenBSD doesn't have that.
Stopping and starting "services" is done in different ways, depending on the service you want...
Now, you typically shouldn't need to kill OpenSSH... if you've made alterations to the configuration file, send SIGHUP to reload the file. (
As documented in the man page.).
To terminate a process, you would either use a combination of
ps(1) and
kill(1), or
pkill(1).
For BIND, once enabled in rc.conf, a
rndc(8) key is generated at the next boot.. with that, you can monitor the status of the daemon.
Some base daemons have "ctl" utilities, Apache for example, has
apachectl(8).
That's how it should be... IMHO, but I'm a little enthusiastic.