Munin contributed plugins

#!/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