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contrib-munin/plugins/mysql/mysql_size_ondisk

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#!/bin/bash
#
INFO=\
"mysql_size_ondisk - Munin plugin that reports the size of the files and
directories in /var/lib/mysql, biggest to smallest.
To correctly count InnoDB tables you should have innodb_file_per_table enabled
in MySQL (good practise anyway), otherwise all InnoDB tables will be counted into
ibdataX.
This plugin must be run as the user mysql, to do that append the following
to your /etc/munin/plugins/plugin-conf.d/munin-node:
[mysql_size_ondisk]
user mysql
This plugin gives you similar information as mysql_size_all. A difference
is that mysql_size_ondisk is much faster (0.4 seconds vs 14 seconds, on a server
with 170 databases, 26 GB total). Also note that mysql_size_all gives you the net
data size, mysql_size_ondisk gives you the gross storage space used, which may be
much more than your actual data."
#
# License: GPLv2 or later
#
# v1.0, 27.01.2012 Jakob Unterwurzacher <j.unterwurzacher@web-tech.at>
#%# family=auto
#%# capabilities=autoconf
set -eu
DIR=/var/lib/mysql
function clean {
# First character must not be a number
a=${1/#[0-9]/_}
# Other characters must be alphanumeric
b=${a//[^a-zA-Z0-9]/_}
echo $b
}
if [ "${1:-}" = "autoconf" ]
then
if du -sb $DIR &> /dev/null
then
echo "yes"
exit 0
else
echo "no"
exit 1
fi
elif [ "${1:-}" = "config" ]
then
echo "graph_title MySQL on-disk database size"
echo "graph_category mysql"
# graph_info cannot have newlines - replace by <br> which will be rendered to newlines in
# the web interface.
echo "graph_info ${INFO//$'\n'/<br>}"
echo "graph_args --base 1024 --lower-limit 0"
echo "graph_vlabel Bytes"
cd $DIR
du -sb * | sort -nr | while read s i
do
i=`clean $i`
echo "$i.label $i"
echo "$i.type GAUGE"
echo "$i.draw AREASTACK"
done
exit 0
elif [ "${1:-}" = "" ]
then
cd $DIR
du -sb * | sort -nr | while read s i
do
i=`clean $i`
echo "$i.value $s"
done
exit 0
else
echo "Unknown argument"
exit 1
fi