plugin-homedirs: homedirs

#!/bin/sh
#
# (c)2008, Christian Kujau <lists@nerdbynature.de>
# Inspired by the perl version from Philipp Gruber <pg@flupps.net>
#
# We still need a cronjob to update CACHEFILE once in a while, e.g.:
# 0 * * * * root [ -O /tmp/munin-homedirs.cache ] && du -sk /home/* > /tmp/munin-homedirs.cache
#
CACHEFILE=/tmp/munin-homedirs.cache

if [ "$1" = "autoconf" ]; then
        echo yes
        exit 0
fi

if [ "$1" = "config" ]; then
        echo 'graph_title Homedir usage (in MB)'
        echo 'graph_args --base 1024 -l 1'
        echo 'graph_vlabel MBytes'
        echo 'graph_category disk'
        echo 'graph_info This graph shows the size of the users homedirs'

        awk '!/lost\+found/ {gsub(/\//,"_"); print $2}' $CACHEFILE | sort | while read i; do
                echo "$i".label `echo "$i" | sed 's/_/\//g'`
                echo "$i".warning 1024000
                echo "$i".critical 2048000
        done
        exit 0
fi      

awk '!/lost\+found/ {gsub(/\//,"_"); print $2".value "$1 * 1024 }' $CACHEFILE