Amos Shapira wrote:
Hello,
Is there a generic built-in way on CentOS to overlook that a specific process is alive and re-spawn it (or just run a configured command) when it dies?
I know how to script things so a parent will watch its child, but was wondering whether there is something more readily available instead of having to reinvent the wheel.
The process must be controlled via a /etc/init.d/... script and should be stop-able (it runs in a primary/stand-by configuration), so use of "respawn" in inittab is not a solution.
So far googl'ing for "watchdog" comes up with references about system watchdog - which will reboot the system if the kernel appears to be stuck.
Thanks,
--Amos
You might take a glance at daemontools:
http://cr.yp.to/daemontools/faq.html
The directory layout is a bit nonstandard, but it does what you're looking for. I believe SME Server (which is built on top of CentOS) makes use of this tool set...
-Greg