Nagios Support Forum

We are trying to monitor apache tomcat using ncpa agent but we are facing issues.

As this is completely new monitoring set up and not aware of right use case of arguments, could you please suggest. we did follow the document.
https://assets.nagios.com/downloads/nag ... 1773666937

please let us know if ncpa.cfg has to edited with options and right way to have this monitored

./check_ncpa_.py -H XXXXX -t xxxx -P 5693 -M 'plugins/check_jvm.jar' -q "args=-s xxxxxx:1000/jmxrmi,args=-u 'xxx',args=-p 'xxx',args=-t tomcat,args=-C 'ClassCount',args=-w '10000',args=-c '50000'"
UNKNOWN: An error occured connecting to API. (HTTP error: '500 INTERNAL SERVER ERROR')

Please help with this?

Hi,

Firstly make sure you have JMX monitoring enabled on the Tomcat machine.

Then give this a try: Let me know if that helps please.

Thanks

Thanks for the reply yes jmx is installed and i am able to login to jconsole using username and password.

Could you please let me know if the ncpa.cfg has been updated right?
still not sure if i am using right verbose. Please help me update with right config and use case

Hi

The ncpa.cfg line for .jar should be: verify that the check_jvm.jar file is in /usr/local/ncpa/plugins (on the Tomcat machine)

make sure this works on the Tomcat machine: ***** note the -C ClassCount:"http-nio-8080" you have -C ClassCount *****


At this point we should have everything set up correctly on the Tomcat machine. If not we need to fix it first.

Then on the xi server: where $ARGS1$ is:

-t mytoken -P 5693 -M plugins/check_jvm.jar -a '-s "service:jmx:rmi:///jndi/rmi://localhost:9000/jmxrmi" -u tomcat -p tomcat -t tomcat -C ClassCount:"http-nio-8080" -w 10000 -c 50000'

Please let me know the result.

Thanks