Munin contributed plugins

#!/usr/bin/perl -w

# Plugin to monitor ntp queries

# (c)2009 Chris Hastie: chris (at) oak (hyphen) wood (dot) co (dot) uk

#

# Parameters understood:

#

#   config   (required)

#   autoconf (optional - used by munin-node-configure)

#

# Config variables:

#

#       ntpdc           - path to ntpdc program

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

#

# Change log

# v1.0.0    2009-03-11        Chris Hastie

# initial release 

#

#

#

# Magic markers - optional - used by installation scripts and

# munin-node-configure:

#

#%# family=contrib

#%# capabilities=autoconf

#

use strict;

use Socket;

my $NTPDC = $ENV{ntpdc} || "ntpdc";

my $COMMAND    =      "$NTPDC -c sysstats";

# autoconf

if ($ARGV[0] and $ARGV[0] eq "autoconf") {

    `$NTPDC -c help >/dev/null 2>/dev/null`;

    if ($? eq "0") {

        if (`$NTPDC -c sysstats | wc -l` > 0) {

            print "yes\n";

            exit 0;

        } else {

            print "no (unable to list system stats)\n";

            exit 1;

        }

    } else {

        print "no (ntpdc not found)\n";

        exit 1;

    }

}

my $queries = 0;

my $packrcv;

my $packproc;

# get data from tc

open(SERVICE, "$COMMAND |")

  or die("Could not execute '$COMMAND': $!");

while (<SERVICE>) {

    if (/^packets received:\s*(\d*)/) {

      $packrcv = $1;

    }

    if (/^packets processed:\s*(\d*)/) {

      $packproc = $1;

    }

    if (/^current version:\s*(\d*)/) {

      $queries += $1;

    }

    if (/^previous version:\s*(\d*)/) {

      $queries += $1;

    }

    if (/^bad version:\s*(\d*)/) {

      $queries += $1;

    }    

 #   if (/^access denied:\s*(\d*)/) {

 #     $queries += $1;

 #   }    

 #   if (/^bad length or format:\s*(\d*)/) {

 #     $queries += $1;

 #   }    

 #   if (/^bad authentication:\s*(\d*)/) {

 #     $queries += $1;

 #   }    

 #   if (/^rate exceeded:\s*(\d*)/) {

 #     $queries += $1;

 #   }    

}

close(SERVICE);

$queries = $queries - $packproc;

# config

if ($ARGV[0] and $ARGV[0] eq 'config') {

  print "graph_title NTP Queries\n";

  print "graph_args --base 1000\n";

  print "graph_vlabel qps\n";

  print "graph_category time\n";

  print "graph_info Queries to the NTP server\n";

  print "queries.label Queries per second\n";

  print "queries.type DERIVE\n";

  print "queries.min 0\n";

  exit 0;

}

# send output

print "queries.value $queries\n";

##################################

=pod

=head1 Description

ntp_queries - A munin plugin to monitor queries handled by NTP

=head1 Parameters understood:

  config   (required)

  autoconf (optional - used by munin-node-configure)

=head1 Configuration variables:

All configuration parameters are optional

  ntpdc            - path to ntpdc program

=head1 Known issues

=cut