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How to monitor and alert on tomcat or httpd thread count for Linux

On our Linux systems we'd like to monitor a specific set of servers and their tomcat thread count, then alert if a certain threshold of threads is surpassed. I have spent a good amount of time trying to figure this out without luck. Closest thing I have found is the following article:
https://support.solarwinds.com/SuccessCenter/s/article/Monitor-and-Alert-on-Thread-Count-of-a-Process

But the component monitor wizard link is dead and I'm unable to figure out how to set this up. Any help will be greatly appreciated.

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mesverrum

Go here

YOURSERVER/Orion/APM/Admin/MonitorLibrary/AppFinder/SelectMonitorType.aspx

then follow the rest of your KB.

mikeeh24

Thank you @mesverrum ! I was able to walk through the steps from there. However, it is not triggering an alert and I'm not sure why. I've defined the alert condition as follows:

Here is the app monitor, which seems to be working:

Any thoughts on what could be the problem?

mesverrum

looks like you set up a process monitor, the article is telling you to set up a perfmon monitor looking at the perfmon tracking the number of processes that are running. Go back to the wizard and set up a perfmon counter as it explains and you should be better.

cnorcross

Would setting the alert trigger against the "Process Instance Count" field on the process monitor component work for you? I think that corresponds to the number of separate PIDs running for a given process.