[Nagiosplug-devel] Nagios plugin "No Output" error

[Pio Niyi]

Hi All,

I wrote a plugin that uses wget to check if my cgi-scripts are working
properly. The plugin works well on command line but it displays "No output"
in Nagios web page.Here is a copy of the script and the service file and
check command:
################## START PROGRAM #########################
#!/usr/bin/perl

use strict;
use Getopt::Long;
use vars qw($opt_h $opt_w $opt_c);
use lib "/usr/local/nagios/libexec";
use utils qw(%ERRORS &print_revision &support &usage);

Getopt::Long::Configure('bundling');
GetOptions
   ("h"   => \$opt_h, "help"  => \$opt_h, "w=s" => \$opt_w, "warning=s" =>
\$opt_w,  "c=s" => \$opt_c, "critical=s" => \$opt_c);

my $PROGNAME = "check_url";
my $REVISION = '$Revision: 1.1 $';

$ENV{'PATH'}='/usr/bin/';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';

########## Configure Section ############
my $url = $ARGV[0];
my $warning = $ARGV[1];
my $critical = $ARGV[2];
my $wget = `wget -nv --spider -o output.nagios $url`;
my $output_file = "output.nagios";


######## Program Section #############
open(DAT, $output_file) || die ("Could not open file!");
        my @output = <DAT>;
close(DAT);

#($opt_u) || usage("URL not specified\n");
#my $opt_u = $url;
#$url) || usage("Invalid url: $opt_u\n");
($opt_w) || usage("warning threshold not specified\n");
my $warn = $1 if ($opt_w =~ /(\d{1,2})/);
($opt_c) || usage("Critical threshold not specified\n");
my $crit = $1 if ($opt_c =~ /(\d{1,2})/);


print "HTTP: $url: @output\n";

if ($warning <= 2) {
(my @warning = grep(/Authorization Required/, at output));
exit $ERRORS{'WARNING'};
}

if ($critical <= 3) {
 (my @critical = grep(/ERROR/, at output));
exit $ERRORS{'CRITICAL'}
}
exit $ERRORS{'OK'}  if (my @ok = grep(/OK/, at output));

sub print_usage () {
   print "Usage: $PROGNAME -c <crit>\n";
}

sub print_help () {
   print_revision($PROGNAME, $REVISION);
   print "Copyright (c) 2006 Pius Oshinuga

######## Help Section ##################
if ($opt_h) {print_help(); exit $ERRORS{'OK'};}

This plugin reports the script errors using the wget package.";
        print_usage();
        print "
-w, --warning=INTEGER
   If site cannot be found or Authority required which a WARNING status will
result
-c, --critical=INTEGER
   If Error occurs which a CRITICAL status will result
";
}

################### END PROGRAM ######################

#########################################################
# Checking URL
########################################################
define service{
    host_name           hostname.com
    service_description check-url
    check_command       check_url!hostname.com/script.cgi!1!2
    max_check_attempts  5
    normal_check_interval   5
    retry_check_interval    3
    check_period        24x7
    notification_interval   0
    notification_period 24x7
    notification_options    c,r
    contact_groups      web-admins
}
##########################################################

###### Check command ########################
# check_url command definition
define command{
command_name check_url
command_line $USER1$/check_url -u $HOSTADDRESS$ -c $ARG1$
}

Thank you for your envisaged help




--
"I might be a slow walker but I never walk backwards"
-Johnny Walker
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