[Nagiosplug-devel] Re: Native plugins (was Re: Java Plugins)

[David Robinson]

Does anyone on this thread have any experience writing plugins in Java?

 

At this time I must use a Java process on the Nagios host in order to
use the JMX (Java Management Extensions) protocol to communicate with my
WebLogic Server processes on remote hosts.

 

I have successfully written Perl plugins that call Java code, but I have
been unsuccessful with writing plugins directly in Java.

 

When I execute my draft Java plugins from the command line as the Nagios
user, I get correct output to STDOUT and correct exit codes ... for
example:

 

sh-2.05$ whoami

nagios

sh-2.05$ /home/bea/jdk141_05/bin/java -classpath
/usr/lib/nagios/bea_jars/813/weblogic.jar:/usr/lib/nagios/plugins_custom
/wls8nagios.jar com.albertsons.nagios.WLS8ThreadMonitor -H lnx074 -P
9193 -u beaprod -p want2gohome -D absCommonWLI -S absCommonWLIMngd1 -M
weblogic.kernel.Default

THREADS OK: 1 thread(s) used out of 100

sh-2.05$ echo $?

0

sh-2.05$

 

 

When the same plugin is called from the Nagios process I receive a
message such as below in the nagios.log file:

 

[1100884674] SERVICE ALERT: lnx112;WLS-812-THREADS;WARNING;SOFT;2;(No
output!)

 

 

Any idea why I am not receiving any output?  I am writing the status
message using System.out.println("THREADS ..."); and
System.exit(EXIT_CODE);

 

Thanks for the discussion,

Dave

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