Nagios Support Forum

Hello,
I have installed Nagios XI as a VM which is the lastest centos version for a vm. Don't know what version that is but latest.

We are checking out Nagios since a vendor can not seem to fix tomcat service on one of our critical servers. We need a way to monitor the cpu on a windows 2008 server and it goes above 90 or 95 percent then it automatically restarts the tomcat service. This doesn't sound hard but putting the monitor with the execute a batch file or restart the service must be harder than it sounds. I can not figure out Nagios well enough yet to do basic things and it looks like I am going to the hardest thing.

Does anyone know how to, I am told, tell Nagios with a shell script or anything to use a monitor for CPU that reaches 90 or above to restart a specific service on a server (tomcat service)??

Please step by step since I am new to this and my linux is very rusty...........btw how do you copy a windows file to a Nagios VM?

We would wait for the vendor to fix their application that uses tomcat but that is a pending request for a year now. We are into option 2 which is why not automate the tomcat service restart rather than a person onsite having to do it when we get a high cpu email.

Thanks

You will need to get the NSClient++ installed and running on the Windows server
http://assets.nagios.com/downloads/nagi ... _Agent.pdf

Then you will want to
http://assets.nagios.com/downloads/nagi ... Client.pdf

The rest in going to need to be customized, but the basic process is laid out in this wiki:
http://www.bluemustard.org/wiki/index.p ... cesRestart

Additionally, there is a quite a bit of information covering these types of items in the Administrator Guide
http://assets.nagios.com/downloads/nagi ... nistrator/
Library
library.nagios.com/library/products/nagiosxi/
and Exchange
exchange.nagios.org/

As for hot to copy a file to a VM, if your linux is rusty, you might want to look at WinSCP, but for sure you will need to look at the permissions of any file you copy over.

You will have to create an event handler, which will get triggered when the CPU load goes above 90-95%. Here is a document on Nagios XI Global Event Handlers:

http://assets.nagios.com/downloads/nagi ... ndlers.pdf

"Global" event handlers are run for all hosts and services - you will need a "service specific" event handler.

Once you are monitoring Windows 2008 server, I would assume you are using the NSClient++. You can have NSClient++ execute a batch file by using NRPE, ie:
and on the nagios side have the "command" be:
On your second questions, you can transfer files between Windows and VM by using any File Transfer Protocol software, for example, Filezilla.

Hope this helps.

Thanks I will read though the material and hopefully put something together. A side note I am close to being able to do this in vcenter but for some reason it doesn't run the batch file I tell it too otherwise I could handle it there too. Working on both as a possible solution to the restart service if a condition exists. Wish there was a plugin.....

Thanks