Munin contributed plugins

#!/usr/bin/perl

#

# Copyright (C) 2007 - Rodolphe Quiédeville <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 1.1  2007/01/17 10:41:01  rodo

# Change incorrect family

#

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

# Created by Rodolphe Quiédeville

#

# Parameters:

#

#   config

#   autoconf

#

# Configuration variables

#

#   mysqlopts     - Options to pass to mysql

#   mysqladmin    - Override location of mysqladmin

#

#%# family=manual

#%# capabilities=autoconf

use strict;

use Munin::Plugin;

my $COMMAND;

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

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;

}

sub getDBList;

foreach my $db (getDBList()) {

  my (@infos,$info,$i_data,$i_index);

  $COMMAND = "$MYSQLADMIN $ENV{mysqlopts} $db -e 'show table status;' | head -n 1";

  open(SERVICE, "$COMMAND |")

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

  while (<SERVICE>) {

      (@infos)  = split;

  }

  close(SERVICE);

  my $i = 0;

  foreach $info (@infos) {

      $i++;

      if ($info eq 'Data_length') {

    $i_data = $i;

    next;

      }

      if ($info eq 'Index_length') {

    $i_index = $i;

    last;

      }

  }

  my $total_size = 0;

  if ($i_data>0 && $i_index>0) {

    $COMMAND = "$MYSQLADMIN $ENV{mysqlopts} $db -e 'show table status;' | cut -f $i_data,$i_index | grep -v leng";

    open(SERVICE, "$COMMAND |")

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

    while (<SERVICE>) {

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

        $total_size += $1 + $2;

    }

    close(SERVICE);

  }

  my $fieldname = clean_fieldname($db);

  print("$fieldname.value $total_size\n");

}

sub print_config {

    my $num = 0;

    my @dbs = getDBList;

    print("graph_title MySQL databases size\n");

    print ('graph_args --base 1024 -l 0

graph_vlabel bytes

graph_category db

graph_info Plugin available at <a href="http://rodolphe.quiedeville.org/hack/munin/">http://rodolphe.quiedeville.org/hack/munin/</a>

');

    for my $db (@dbs) {

        my $fieldname = clean_fieldname($db);

        print("$fieldname.label $db\n",

              "$fieldname.min 0\n",

              "$fieldname.type GAUGE\n",

              "$fieldname.draw AREASTACK\n",

             );

        $num++;

    }

}

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;

}

sub getDBList {

  my @dbs;

  foreach my $f (glob("/var/lib/mysql/*")) {

    if (-d $f) {

      $f =~ s/\@002d/-/g;

      $f =~ s/\@002e/./g;

      $f =~ s!.*/!!;

      @dbs[$#dbs+1]=$f };

  }

  return @dbs;

}