plugin-homedirs: du_multidirs

#!/bin/sh
#
# (c)2009, Christian Kujau <lists@nerdbynature.de>
# Based on the 'homedirs' plugin, initially written in Perl by Philipp Gruber <pg@flupps.net>
#
# We still need a cronjob to update CACHEFILE once in a while, e.g.:
# 0 * * * * root [ -O /tmp/munin-du_multidirs.cache ] && du -sk /dir /dir2 dir3/* > /tmp/munin-du_multidirs.cache
#
CACHEFILE=/tmp/munin-du_multidirs.cache

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

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

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

awk '!/lost\+found/ {gsub(/\//,"_"); print $2".value "$1 * 1024 }' $CACHEFILE | sort -r -n -k2