<html 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-CA link=blue vlink=purple> <div class=Section1> Hi Everyone,<o:p></o:p> <o:p> </o:p> I’m new to Nagios as well as this community, and am having a small issue with the development of a ‘Nagios plugin’.<o:p></o:p> <o:p> </o:p> All existing plug-ins I use, as well as the ones found on NagiosExchange seem to work great… however I wrote a simple script following the rules (or so I think) which outputs perfectly on my Nagios console. The problem is; Nagios seems to be executing this script locally and placing its result on each host (on the web interface).<o:p></o:p> <o:p> </o:p> The tool I run is fairly complicated, but if I strip out all the content and do a simple file count in a directory, I get the same results. Assume 3 hosts: HostA, HostB, and HostC where HostA runs the web application. The output on all 3 hosts always pertains to what is on HostA. Essentially ‘Nagios’ is ‘lying’ J to me when it reports information on other hosts (but for this plugin only).<o:p></o:p> <o:p> </o:p> To reproduce this (the code is significantly reduced to avoid making this email larger then it already is), just make a simple check_test plugin (in the plugin dir) with this content:<o:p></o:p> #!/bin/sh<o:p></o:p> #<o:p></o:p> # ## Plugin for Nagios to tell if it lies :)<o:p></o:p> # Usage: ./check_test<o:p></o:p> STATE_OK=0<o:p></o:p> COUNT=$(ls /tmp | wc -l)<o:p></o:p> <o:p> </o:p> MESG="OK - $COUNT"<o:p></o:p> EXITSTATUS=$STATE_OK<o:p></o:p> echo "$MESG"<o:p></o:p> exit $EXITSTATUS<o:p></o:p> <o:p> </o:p> <o:p> </o:p> Here is your command information:<o:p></o:p> define command{<o:p></o:p> command_name check_test<o:p></o:p> command_line /usr/lib/nagios/plugins/check_test<o:p></o:p> }<o:p></o:p> <o:p> </o:p> Here is the service information (update the host x3):<o:p></o:p> # Service definition<o:p></o:p> define service{<o:p></o:p> # Name of service template to use<o:p></o:p> use generic-service <o:p></o:p> host_name node01.rhc1<o:p></o:p> service_description Test<o:p></o:p> is_volatile 0<o:p></o:p> check_period 24x7<o:p></o:p> max_check_attempts 3<o:p></o:p> normal_check_interval 5<o:p></o:p> retry_check_interval 1<o:p></o:p> contact_groups admins<o:p></o:p> notification_interval 120<o:p></o:p> notification_period 24x7<o:p></o:p> notification_options w,u,c,r<o:p></o:p> check_command check_test<o:p></o:p> }<o:p></o:p> define service{<o:p></o:p> # Name of service template to use<o:p></o:p> use generic-service <o:p></o:p> host_name node02.rhc1<o:p></o:p> service_description Test<o:p></o:p> is_volatile 0<o:p></o:p> check_period 24x7<o:p></o:p> max_check_attempts 3<o:p></o:p> normal_check_interval 5<o:p></o:p> retry_check_interval 1<o:p></o:p> contact_groups admins<o:p></o:p> notification_interval 120<o:p></o:p> notification_period 24x7<o:p></o:p> notification_options w,u,c,r<o:p></o:p> check_command check_test<o:p></o:p> }<o:p></o:p> define service{<o:p></o:p> # Name of service template to use<o:p></o:p> use generic-service <o:p></o:p> host_name node03.rhc1<o:p></o:p> service_description Test<o:p></o:p> is_volatile 0<o:p></o:p> check_period 24x7<o:p></o:p> max_check_attempts 3<o:p></o:p> normal_check_interval 5<o:p></o:p> retry_check_interval 1<o:p></o:p> contact_groups admins<o:p></o:p> notification_interval 120<o:p></o:p> notification_period 24x7<o:p></o:p> notification_options w,u,c,r<o:p></o:p> check_command check_test<o:p></o:p> }<o:p></o:p> <o:p> </o:p> The output from the above on my machine reports ‘OK – 14’ on each and every host in Nagios. There are in-fact ‘14’ files on Node 01 (host A as per the example above), but there is a completely different file count on the other 2 nodes. Why does Nagios fill in the results from the host using the ‘www’ package in replace of all other hosts for ‘only’ this plugin? Or… to rephrase the question: what am I doing wrong? J<o:p></o:p> <o:p> </o:p> Chris<o:p></o:p> <o:p> </o:p> <o:p> </o:p> </div> </body> </html>