Stacked monitoring?
Hello all, I'm fairly sure someone on here has done this before and am hoping its fairly easy to implement. I'm trying to use the LTM's monitors as a way to take offline non-functioning web servers. I've built many monitors in the past to do simple website checks, however the website I'm tasked with now has multiple sub-components that all must be online and available.
Systems:
Web tier: Has a http/s get monitor looking for specific text that is not application driven (simple are you up) Application tier: Has multiple pools created per service using a http post monitor to check on various web services components as well as LDAP monitors for other components that make up the complete application.
The interaction between the two tiers is each web server is configured to connect to the various VIP's that are tied to the application tier web services.
I need the ability to take the front end web server offline and there for cause a global failover via a GTM if any of the sub components OR the web tier is down.
Is there any sort of monitor that I can put in place on the web server pool that can also get the status of the other sub components without having to perform an additional check on them? I already know I can perform an additional check via using the alias address, however if I do it in this manner the service is being checked twice, once at the individual pool for the web service and an additional check against the web tier pool. I was hoping there was a way to have a monitor that can just read the existing status that the LTM has for the pool.
Thank you all in advanced