<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.2800.1515" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left>Perhaps your initial if statement is failing? I suggest that you add an else{} clause to the initial if{} regex match; put out some message and exit $ERRORS{UNKNOWN} for no match. Other than that, maybe check the file permissions to ensure that it is executable by the nagios user.</DIV> <DIV dir=ltr align=left> </DIV> <DIV dir=ltr align=left>Hope this helps,</DIV> <DIV dir=ltr align=left> </DIV> <DIV dir=ltr align=left>Lynne Lawrence</DIV> <DIV dir=ltr align=left>QSS/USCG</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> From: nagiosplug-devel-admin@lists.sourceforge.net [mailto:nagiosplug-devel-admin@lists.sourceforge.net] On Behalf Of Aditya Ivaturi Sent: Thursday, September 08, 2005 5:08 PM To: nagiosplug-devel@lists.sourceforge.net Subject: [Nagiosplug-devel] plugin help </DIV> <DIV></DIV> This is the first time I am trying to write a plugin for Nagios. So please bear with me. We have an online testing system and I am writing a plugin to check how many users are actually taking a test. It is a module that is in built in the system and exported via http. So all I do is call that page and dump the number out. Nothing complicated. The code-block (perl) which dumps out is as follows: if ($content =~ m/<TD>Student Cache<\/TD><TD>(\d*)<\/TD>/) { if ($1>$critical) { if ($verbose) { print "CRITICAL: $1 Users Online > $critical Critical Status \t Critical ErrorLev 2 | UsersOnline=$1;0;0;\n"; } else { print "CRITICAL: $1 Users Online | UsersOnline=$1;0;0;\n"; } exit $ERRORS{'CRITICAL'}; } elsif ($1>$warning) { if ($verbose) { print "WARNING: $1 # Users Online > $warning Warning Status \t Critical ErrorLev 1 | UsersOnline=$1;0;0;\n"; } else { print "WARNING: $1 Users Online | UsersOnline=$1;0;0;\n";}; exit $ERRORS{'WARNING'}; } else { if ($verbose) { print "OK: $1 Users Online - Status normal \t Normal ErrorLev 0 | UsersOnline=$1;0;0;\n"; } else { print "OK: $1 Users Online | UsersOnline=$1;0;0;\n"; } exit $ERRORS{'OK'}; } } For e.g the output will look like: OK: 12 Users Online | UsersOnline=12;0;0; where -w is 150 and -c is 200. But nagios complains by saying "NRPE: Unable to read output". Is the format of the output wrong or am I missing any steps? --Turi </BLOCKQUOTE></BODY></HTML>