[Wrapper-user] Best way to handle dependent processes on Linux/Unix?

[Chuck S. <ch...@co...>]

I would like to use JSW to manage an Apache/Tomcat config. Tomcat and
Apache are configured to use the JK2 connector so that Apache is the
HTTP/HTTPS frontend and Tomcat is application server backend. There is a
dependency to start Tomcat before Apache, and likewise shutdown Apache
then Tomcat.

I read the different integration methods and none seem to specifically
address this issue on a Linux/Unix platform. I could hack this into a
WrapperListener class using Runtime.exec to start Apache and
Runtime.addShutdownHook to stop Apache. Is this the recommended method
of handling service dependencies on Linux/Unix?

Assuming the answer is yes, I still have to devise a means of end-to-end
monitoring to ensure that Apache and the JK2 connector are functioning
as well as the Tomcat JVM. I can script a pinger to do this, but how
would I integrate it with JSW's monitor?

BTW, this is a great tool. I don't know how many times I have had to
script monitors to do similar things. Using JSW I should not have to do
so again.

Thanks,
Chuck