Unable to use SNMP to monitor Wifi points
Posted: Wed Oct 14, 2015 5:36 am
I'm trying to setup monitoring on my wifi points here in head office, the current issue I'm getting is;
No output on stdout) stderr: Can't locate perfSONAR_PS/Common.pm in @INC (you may need to install the perfSONAR_PS::Common module) (@INC contains: /usr/local/nagios/libexec/../lib/ /etc/perl /usr/local/lib/perl/5.18.2 /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl .) at /usr/local/nagios/libexec/check_snmp line 7.
When i tried setting up snmp, i noticed the check_snmp was missing from the plugins, so using code on line I created it.
No output on stdout) stderr: Can't locate perfSONAR_PS/Common.pm in @INC (you may need to install the perfSONAR_PS::Common module) (@INC contains: /usr/local/nagios/libexec/../lib/ /etc/perl /usr/local/lib/perl/5.18.2 /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl .) at /usr/local/nagios/libexec/check_snmp line 7.
When i tried setting up snmp, i noticed the check_snmp was missing from the plugins, so using code on line I created it.
Can anyone see what i'm doing wrong?#!/usr/bin/perl
use strict;
use FindBin qw($Bin);
use lib "$Bin/../lib/";
use Monitoring::Plugin;
use perfSONAR_PS::Common qw( find findvalue );
use perfSONAR_PS::Client::MA;
use XML::LibXML;
use LWP::Simple;
my $np = Nagios::Plugin->new( shortname => 'check_snmp',
timeout => 60,
usage => "Usage: %s -u|--url <snmp-MA-URL> -i|--interface<interface-address> -t|--timeInterval<time-interval-in-minutes> -d|--direction<traffic-direction> -w|--warning <warning-threshold> -c|--critical <critical-threshold> -v|--verbose --timeout <timeout>" );
#get arguments
$np->add_arg(spec=> "u|url=s",
help => "URL of the snmp MA to contact",
required => 1);
$np->add_arg(spec=> "d|direction=s",
help => "traffic direction - in(inbound) or out(outbound)",
required => 1);
$np->add_arg(spec=> "i|interface=s",
help => "interface address of the required measurement statistics",
required => 1);
$np->add_arg(spec=> "t|timeInterval=i",
help => "time interval in minutes for the measurement statistics",
required => 1);
$np->add_arg(spec=> "w|warning=s",
help => "average utilization threshold to show warning state",
required => 1);
$np->add_arg(spec=> "c|critical=s",
help => "average utilization threshold to show critical state",
required => 1);
$np->add_arg(spec=> "v|verbose",
help => "allow verbose mode for debugging",
required => 0);
$np->getopts;
my $snmpURL = $np->opts->{'u'};
my $interface =$np->opts->{'i'};
my $interval =$np->opts->{'t'};
my $wThresh = $np->opts->{'w'};
my $cThresh = $np->opts->{'c'};
my $verbose = $np->opts->{'v'};
my $direction = $np->opts->{'d'};
my $timeout = $np->opts->{'timeout'};
# Create client
my $ma = new perfSONAR_PS::Client::MA( { instance => $snmpURL, alarm_disabled => 1 } );
# Set subject
my $subject = "<netutil:subject xmlns:netutil=\"http://ggf.org/ns/nmwg/characteristic/utilization/2.0\" id=\"s\">\n";
$subject .= " <nmwgt:interface xmlns:nmwgt=\"http://ggf.org/ns/nmwg/topology/2.0/\">\n";
$subject .= " <nmwgt:ifAddress type=\"ipv4\">$interface</nmwgt:ifAddress>\n";
$subject .= " <nmwgt:direction>$direction</nmwgt:direction>\n";
$subject .= " </nmwgt:interface>";
$subject .= "</netutil:subject>\n";
#Set event type
my @eventTypes = ("http://ggf.org/ns/nmwg/characteristic/utilization/2.0");
# Set time range
my $range = $interval*60;
my $end = time;
my $start = $end - $range; #1min = 60s
my $cFunction = "AVERAGE";
# Send request
my $result = q{};
eval{
local $SIG{ALRM} = sub { $np->nagios_exit( "UNKNOWN", "Timeout occurred while trying to contact MA"); };
alarm $timeout;
$result = $ma->setupDataRequest(
{
subject => $subject,
eventTypes => \@eventTypes,
start => $start,
end => $end,
resolution => $range,
consolidationFunction => $cFunction
}
);
alarm 0;
};
#Print request parameters
if($verbose ne ''){
print "Request parameters: \n";
print "Subject:", $subject,"\n eventTypes: ", @eventTypes,"\n Start time: ", $start, "\n End time: ", $end;
print "Resolution:",$range,",\n cFunction: ", $cFunction;
}
#used in output
my $averageValue;
my $code;
#Output XML
my $parser = XML::LibXML->new();
foreach my $data(@{$result->{"data"}}){
my $doc = $parser->parse_string($data);
my $root = $doc->getDocumentElement();
my @childnodes = $root->findnodes(".//*[local-name()='datum']");
my $units = $childnodes[0]->getAttribute("valueUnits");
$averageValue= $childnodes[0]->getAttribute("value");
if($verbose ne ''){
print "\n\nResult: Average utilization: ", $averageValue,"$units\n";
}
}
if($averageValue ne ''){
$code = $np->check_threshold(
check => $averageValue,
warning => $np->opts->{'w'},
critical => $np->opts->{'c'},
);
}else{
$averageValue = "ERROR";
}
$np->add_perfdata(
'label' => 'Utilization',
'value' => $averageValue
);
$np->add_perfdata(
'label' => 'Direction',
'value' => $direction
);
#determine status
my $msg;
if($code eq OK){
$code = OK;
$msg = "Avg Util is normal";
}elsif ($code eq WARNING){
$msg = "Avg Util is slightly beyond normal levels";
}elsif ($code eq CRITICAL){
$msg = "Avg Util has crossed threshold!!!";
}else{
$msg = "Error analyzing results";
}
$np->nagios_exit($code, $msg);
