mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
65 lines
2.1 KiB
Plaintext
65 lines
2.1 KiB
Plaintext
|
#!/bin/bash
|
||
|
|
#
|
||
|
|
# Munin plugin to monitor free space in MySQL's InnoDB tablespace.
|
||
|
|
# Mostly useful if you use InnoDB on a block device, or if you for
|
||
|
|
# some reason don't want to do autoextend on the last file.
|
||
|
|
#
|
||
|
|
# 2007-03-18 Stig Sandbeck Mathisen <ssm@fnord.no>
|
||
|
|
#
|
||
|
|
# Configuration parameters for /etc/munin/plugin-conf.d/mysql_innodb,
|
||
|
|
# if you need to override the defaults below:
|
||
|
|
#
|
||
|
|
# [mysql_innodb]
|
||
|
|
# env.mysqlopts - Options to pass to mysql (host, username, password)
|
||
|
|
# env.warning - Generate a warning if free space goes below this level
|
||
|
|
# env.critical - Generate a critical if free space goes below this level
|
||
|
|
#
|
||
|
|
# For security reasons, this plugin uses its own schema with a simple,
|
||
|
|
# empty table using the InnoDB engine.
|
||
|
|
#
|
||
|
|
# You need to run this to get this plugin to work:
|
||
|
|
# mysql> CREATE DATABASE munin_innodb;
|
||
|
|
# mysql> USE munin_innodb
|
||
|
|
# mysql> CREATE TABLE something (anything int) ENGINE=InnoDB;
|
||
|
|
|
||
|
|
## Tunable parameters with defaults
|
||
|
|
MYSQL="${mysql:-/usr/bin/mysql}"
|
||
|
|
MYSQLOPTS="${mysqlopts:---user=munin --password=munin --host=localhost}"
|
||
|
|
|
||
|
|
WARNING=${warning:-2147483648} # 2GB
|
||
|
|
CRITICAL=${critical:-1073741824} # 1GB
|
||
|
|
|
||
|
|
## No user serviceable parts below
|
||
|
|
if [ "$1" = "config" ]; then
|
||
|
|
echo 'graph_title MySQL InnoDB free tablespace'
|
||
|
|
echo 'graph_args --base 1024'
|
||
|
|
echo 'graph_vlabel Bytes'
|
||
|
|
echo 'graph_category mysql'
|
||
|
|
echo 'graph_info Amount of free bytes in the InnoDB tablespace'
|
||
|
|
echo 'free.label Bytes free'
|
||
|
|
echo 'free.type GAUGE'
|
||
|
|
echo 'free.min 0'
|
||
|
|
echo 'free.warning' $WARNING:
|
||
|
|
echo 'free.critical' $CRITICAL:
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Get freespace from mysql
|
||
|
|
freespace=$($MYSQL $MYSQLOPTS --batch --skip-column-names --execute \
|
||
|
|
"SELECT table_comment FROM tables WHERE TABLE_SCHEMA = 'munin_innodb'" \
|
||
|
|
information_schema);
|
||
|
|
retval=$?
|
||
|
|
|
||
|
|
# Sanity checks
|
||
|
|
if (( retval > 0 )); then
|
||
|
|
echo "Error: mysql command returned status $retval" 1>&2
|
||
|
|
exit -1
|
||
|
|
fi
|
||
|
|
if [ -z "$freespace" ]; then
|
||
|
|
echo "Error: mysql command returned no output" 1>&2
|
||
|
|
exit -1
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Return freespace
|
||
|
|
echo $freespace | awk '/InnoDB free:/ {print "free.value", $3 * 1024}'
|