Java Virtual Memory monitoring in Windows server

[RIDS_I2MP]

Hello Team,

I want to monitor "Java Virtual Memory" in a windows server on which other parameters like CPU utilization, physical memory utilization, disk space usage, etc. are already being monitored.
Can you please let me know if it is possible?

[rexconsulting]

I've written a lot of custom checks using jmx, which can access pretty much anything in the jvm. The only downside is that it uses java, and it takes a bit more memory and CPU than most checks.

[mcapra]

The official JMX documentation specifically covers heap memory usage:
https://assets.nagios.com/downloads/nag ... ios-XI.pdf

Though "virtual memory" is a bit vague in this case.

[cdienger]

@RIDS_I2MP, did the responses help resolve your issue?

[RIDS_I2MP]

Hello,

I am still checking that, will update you as soon as its resolved.
Thanks for the help

[RIDS_I2MP]

Hello,

I checked the document provided here, but its for Linux server.
I want to monitor the java virtual memory on a Windows server. Can you please let me know the same for Windows server.

[mcapra]

I would suggest thoroughly reviewing the documentation. The only Linux specific part of that documentation is regarding the agent configuration. You could just as easily swap out NRPE for NSClient++ and use the exact same Nagios-side configurations. The only difference would be how you configure the check_jmx plugin/command client-side.

Here's a detailed guide for configuring custom plugins with NSClient++:
https://support.nagios.com/kb/article.php?id=528

One could also argue the check_jmx script is "Linux specific", but it's pretty dirt simple; It wraps args and feeds them into the jmxquery.jar file:

Code: Select all

#!/bin/sh
#
# Nagios plugin to monitor Java JMX (http://java.sun.com/jmx)attributes.
#
RDIR=`dirname $0`
$JAVA_HOME/bin/java  -jar $RDIR/jmxquery.jar $@

It wouldn't take much to turn it into a "Windows" script. The Powershell equivalent might look something like this:

Code: Select all

$allArgs = $PsBoundParameters.Values + $args
Start-Process -FilePath java -ArgumentList '-jar Z:\path\to\jmxquery.jar $allArgs ' 

Or as a batch file:

Code: Select all

java -jar Z:\path\to\jmxquery.jar %*

Relative paths might make more sense and would allow jmxquery.jar and your check_jmx script to exist in the same place more seamlessly.

One thing I would like to emphasize on the first page of this documentation, because it is often missed, is that this plugin assumes your Java runtime has a running JMX server.

[cdienger]

Thanks again for your input, @mcapra!

[RIDS_I2MP]

Hello,

The owner of the Windows server is not willing to use the document related to unix/linux.
If possible, please help me with some document particularly for windows server.

[cdienger]

We don't have a document like the one you're requesting, but as @mcapra pointed out and demonstrated, the check can be converted to a Windows batch or powershell script easily. Once that is done you can use the steps in https://support.nagios.com/kb/article.php?id=528 to execute it.