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brent_weaver
Guru
Joined: 01 Jul 2004
Posts: 510
Location: Burlington, VT
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 Posted: Thu May 21, 2009 7:39 pm Post subject: nagios plugin execution and my confusion |
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Hello. I am fairly new to nagios and am confused as to why a plugin work interactively, but when run by nagios I get an error.
Here is the script:
| Code: |
#!/usr/bin/perl
# Deps: This script assuming ssh public key authentication has been setup between this server and the remote node
# nagios: +epn
use strict;
use warnings;
use Getopt::Long;
use vars qw( $CMD $OBJ $HOST $USER $WARN $CRIT $CUR @TEMP $OPTS $EXIT );
use Net::SSH qw(sshopen2);
use Net::Ping;
$OPTS = GetOptions ( "W=i" => \$WARN,
"C=i" => \$CRIT,
"H=s" => \$HOST,
"U=s" => \$USER);
unless ( ($WARN) && ($CRIT) && ($HOST) && ($USER) ) {
print "USAGE: $0 -H <HOSTNAME> -U <USERNAME> -W <WARNING> -C <CRITICAL>\n";
exit(3);
}
sshopen2("$USER\@$HOST", *READER, *WRITER, "sar", "2", "2", "|tail","-1","|awk","'{print \$5}'") || die "SSH cmd execution error: $!\n";
@TEMP = (<READER>);
close READER;
close WRITER;
chomp($TEMP[0]);
$CUR = 0;
$CUR = 100 - $TEMP[0];
$EXIT = 3;
$EXIT = 0 if ( $CUR < $WARN );
$EXIT = 1 if ( ( $CUR >= $WARN ) && ( $CUR < $CRIT ) );
$EXIT = 2 if ( $CUR >= $CRIT );
print "CPU Utilization is $CUR%.\n";
exit($EXIT);
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I get the following when run as nagios user in shell:
| Code: |
./cpu_stat -H hthc -U root -W 90 -C 99
CPU Utilization is 28%.
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Nagios status is:
**ePN /usr/lib/nagios/plugins/aix/cpu_stat: "Use of uninitialized value in scalar chomp at /usr/lib/perl5/site_perl/5.8.8/Net/SSH.pm line 187,".
Please help me!
Thanks!
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Brent Weaver |
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richard.scott
Veteran
Joined: 19 May 2003
Posts: 1497
Location: Oxfordshire, UK
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| Posted: Mon Jun 08, 2009 10:45 pm Post subject: |
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I guess you've not got the "perl" flag on when compiling nagios-core?
See if this helps:
http://nagiosplug.sourceforge.net/developer-guidelines.html#PERLPLUGIN
Nagios seems to be picky about what perl code it will run.
You could try re-compiling Nagios without perl to see if that helps? ... unless you fancy debugging lots of other peoples perl code so it works in Nagios  |
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brent_weaver
Guru
Joined: 01 Jul 2004
Posts: 510
Location: Burlington, VT
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| Posted: Tue Jun 09, 2009 6:02 pm Post subject: |
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hey thanks for the response. The perl USE flag is used and compiled into nagios-core. It seems that the issue is with parsing out the command??? Seems also that /usr/bin/p1.pl has something to do w/ it.
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Brent Weaver |
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