Monitoring JVM w/ Nagios

[disrael]

Is there anyway to have nagios report tomcat internals like mem usage, etc?

Kind Regards,

Doron

[slansing]

Is this something along the lines you were thinking?

http://exchange.nagios.org/directory/Pl ... pl/details

[Mitchell]

http://jolokia.org/ is a good choice if you have whole bunch of JVM's to monitor and have lots of counters to monitor.

[scottwilkerson]

thx

[disrael]

Can Jolokia be intergrated into Nagios or is this a seperate application for monitoring JVM?

[disrael]

Also is this compatible with Nagios XI?

http://exchange.nagios.org/directory/Pl ... rl/details

[nscott]

Jolokia appears to be an accessor for JVM metrics, so you would have it run parallel with your JVM, and then you'd have to right some sort of plugin to monitor what you wanted.

A nice tutorial can be found here:

http://www.jolokia.org/tutorial.html

And once you have Jolokia up and running, here is an example of how to use the Perl adapter jmx4perl

http://www.jolokia.org/client/perl.html

Where in this example, it is simply querying the Jolokia server for a metric, and then printing it out.

[Mitchell]

Jolokia is new name for jmx4perl http://exchange.nagios.org/directory/Pl ... rl/details

It has 2 pieces
A) agent : This can be installed in the JVM which needs be monitored or use it in Proxy mode to avoid installing in every JVM
B) Nagios plugin : the check_jmx4perl which you will need to connect to the agent to pull matrices.

We use it in proxy mode to monitor over 50 remote JVMs and works really nice.

[scottwilkerson]

Thanks Mitchell!