Munin contributed plugins

#!/usr/bin/perl

#

# Copyright (C) 2008 - Nathan Haneysmith <nathan@hjksolutions.com>

# Copyright (C) 2007 - Rodolphe Quiedeville <rodolphe@quiedeville.org>

# Copyright (C) 2003-2004 - Andreas Buer

#

# 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; version 2 dated June,

# 1991.

#

# 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, write to the Free Software

# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

#

# $Log$

# Revision 1.2 2008/06/18 Nathan Haneysmith

# Massive rewrite to check and graph MySQL Slave status

#

# Revision 1.1  2007/01/17 10:41:01  rodo

# Change incorrect family

#

# Revision 1.0  2007/01/16 15:57:01  rodo

# Created by Rodolphe Quiedeville

#

# Parameters:

#

#   config

#   autoconf

#

# Configuration variables

#

#   mysqlopts     - Options to pass to mysql

#   mysqladmin    - Override location of mysqladmin

#

#%# family=manual

#%# capabilities=autoconf

use strict;

my $MYSQLADMIN = $ENV{mysqladmin} || "mysql";

my $MYSQLOPTS = $ENV{mysqlopts} || "";

my %WANTED = ( "Seconds"  => "seconds", 

             );

my $arg = shift();

if ($arg eq 'config') {

    print_config();

    exit();

} elsif ($arg eq 'autoconf') {

    unless (test_service() ) {

        print "yes\n";

    } else {

        print "no\n";

    }

    exit;

}

my $seconds = 0;

my (@infos,$info,$i_seconds);

my $COMMAND = "$MYSQLADMIN $MYSQLOPTS -e 'show slave status;' | grep 'Slave'";

open(SERVICE, "$COMMAND |")

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

while (<SERVICE>) {

    (@infos)  = split;

}

close(SERVICE);

my $i = 0;

foreach $info (@infos) {

    $i++;

    if ($info eq 'Seconds_Behind_Master') {

	$i_seconds = $i;

	next;

    }

}

$COMMAND = "$MYSQLADMIN $MYSQLOPTS -e 'show slave status;' | cut -f $i_seconds | grep -v leng";

open(SERVICE, "$COMMAND |")

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

while (<SERVICE>) {

    (m/(\d+).*?(\d+(?:\.\d+)?)/);

    $seconds += $1;

}

close(SERVICE);

print("seconds.value $seconds\n");

sub print_config {

  print "graph_title MySQL Slave Status\n";

  print "graph_args --base 1000 -l 0\n";

  print "graph_vlabel Seconds\n";

  print "graph_category mysql\n";

  print "seconds.label Seconds behind master\n";

  print "seconds.min 0\n";

  print "seconds.draw LINE2\n";

  print "graph_info Plugin available at <a href='http://oss.hjksolutions.com/munin/'>http://oss.hjksolutions.com/munin/</a>\n";

}

sub test_service {

    my $return = 1;

    system ("$MYSQLADMIN --version >/dev/null 2>/dev/null");

    if ($? == 0)

    {

	system ("$COMMAND >/dev/null 2>/dev/null");

	if ($? == 0)

	{

	    print "yes\n";

	    $return = 0;

	}

	else

	{

	    print "no (could not connect to mysql)\n";

	}

    }

    else

    {

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

    }

    exit $return;

}