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#!/bin/sh
#
# Author: Petter Reinholdtsen

set -e

daylimit=120
makewebreport=/usr/sbin/sitesummary-makewebreport
nodes=/usr/sbin/sitesummary-nodes

# Modify this in collector.cfg to /etc/munin/ to automatically replace
# the default munin configuration.
MUNINDIR=/var/lib/sitesummary

[ -f /etc/sitesummary/collector.cfg ] && . /etc/sitesummary/collector.cfg

# The storage area is not configurable, because too many scripts have
# it hardcoded
entriesdir=/var/lib/sitesummary/entries

remove_old_entries() {
    find $entriesdir/. -mindepth 1 -maxdepth 1 -type d \
	-daystart -mtime +$daylimit -print0 |
    xargs -0 -r rm -rf
}

generate_munin_config() {
    # Generate munin config.  Edit /etc/cron.d/munin to enable it.
    # Add -c /var/lib/sitesummary/sitesummary-munin.conf to the calls
    # to the munin scripts, or change MUNINDIR above.
    (
	if [ -f $MUNINDIR/munin.conf.pre ] ; then
	    cat $MUNINDIR/munin.conf.pre
	else
	    # Copy of active config from munin version 1.2.5-1
	    cat <<EOF
# Munin server configuration generated from cron using sitesummary
# data by $0
# Do not edit, it will be overwritten. 
# Edit $MUNINDIR/munin.conf.pre and
# $MUNINDIR/munin.conf.post instead.

dbdir	/var/lib/munin
htmldir	/var/www/munin
logdir	/var/log/munin
rundir	/var/run/munin
tmpldir	/etc/munin/templates

EOF
	fi

	sitesummary-nodes -m

	[ -f $MUNINDIR/munin.conf.post ] && cat $MUNINDIR/munin.conf.post

        # Make sure the subshell return true to trigger the mv below.
	true
    ) > $MUNINDIR/munin.conf.new && \
	chown root:root $MUNINDIR/munin.conf.new && \
	chmod a+r $MUNINDIR/munin.conf.new && \
	mv $MUNINDIR/munin.conf.new $MUNINDIR/munin.conf
}

# Only enable if munin is installed.
if [ -f /etc/munin/munin.conf ] && [ -x /usr/sbin/sitesummary-nodes ]; then
    generate_munin_config
fi

[ -d $entriesdir ] && remove_old_entries

# Update the web report once a day
[ -x $makewebreport ] && nice $makewebreport