<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Does anyone on this thread have any experience writing plugins in Java?<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> I have successfully written Perl plugins that call Java code, but I have been unsuccessful with writing plugins directly in Java.<o:p></o:p> <o:p> </o:p> 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:<o:p></o:p> <o:p> </o:p> sh-2.05$ whoami<o:p></o:p> nagios<o:p></o:p> 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<o:p></o:p> THREADS OK: 1 thread(s) used out of 100<o:p></o:p> sh-2.05$ echo $?<o:p></o:p> 0<o:p></o:p> sh-2.05$<o:p></o:p> <o:p> </o:p> <o:p> </o:p> When the same plugin is called from the Nagios process I receive a message such as below in the nagios.log file:<o:p></o:p> <o:p> </o:p> [1100884674] SERVICE ALERT: lnx112;WLS-812-THREADS;WARNING;SOFT;2;(No output!)<o:p></o:p> <o:p> </o:p> <o:p> </o:p> 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);<o:p></o:p> <o:p> </o:p> Thanks for the discussion,<o:p></o:p> Dave<o:p></o:p> </div> </body> </html>