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#!/usr/bin/perl
#
# Copyright (C) 2006 - 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 1.0 2006/04/28 09:04:01 rodo
# Add lower limit fixed to 0
#
# Revision 1.0 2006/04/26 16:04:01 rodo
# Created by Rodolphe Quiedeville
#
# Parameters:
#
# config
# autoconf
#
# Configuration variables
#
# mysqlopts - Options to pass to mysql
# mysqladmin - Override location of mysqladmin
#
#%# family=auto
#%# capabilities=autoconf
use strict;
my $MYSQLADMIN = $ENV{mysqladmin} || "mysqladmin";
my $COMMAND = "$MYSQLADMIN $ENV{mysqlopts} extended-status";
my $COMMANDSIZE = "$MYSQLADMIN $ENV{mysqlopts} variables";
my %WANTED = ( "Qcache_free_memory" => "free" );
my $arg = shift();
if ($arg eq 'config') {
print_config();
exit();
} elsif ($arg eq 'autoconf') {
unless (test_service() ) {
print "yes\n";
} else {
print "no\n";
}
exit;
}
my ($free, $used) = (0,0);
open(SERVICE, "$COMMAND |")
or die("Coult not execute '$COMMAND': $!");
while (<SERVICE>) {
my ($k, $v) = (m/(\w+).*?(\d+(?:\.\d+)?)/);
next unless ($k);
if (exists $WANTED{$k} ) {
$free = $v;
print("$WANTED{$k}.value $v\n");
}
}
close(SERVICE);
open(SERVICE, "$COMMANDSIZE |")
or die("Coult not execute '$COMMANDSIZE': $!");
while (<SERVICE>) {
my ($k, $v) = (m/(\w+).*?(\d+(?:\.\d+)?)/);
next unless ($k);
if ($k eq "query_cache_size" ) {
print("used.value ",($v-$free),"\n");
}
}
close(SERVICE);
sub print_config {
print('graph_title MySQL Queries Cache Size
graph_args --base 1024 -l 0
graph_vlabel bytes
graph_category mysql
graph_order used free
graph_total Total
graph_info Plugin available at <a href="http://rodolphe.quiedeville.org/hack/munin/">http://rodolphe.quiedeville.org/hack/munin/</a>
used.label Used
used.draw AREA
free.label Free
free.draw STACK
');
}
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;
}
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