To stop the engine you can use three methods:
The graceful stop allows the engine to serve the pending HTTP request, but not accepting any more, closing the log files. The engine in the current version does not handle HUP or TERM signals.
If you have installed the script listed in the section Start/Stop Sh Script you can stop the engine saying
This script performs all three methods starting with the graceful and continuing with the more drastic methods in case the previous did not work.