ramdisk: Make usage of ramdisk configurable

[ipfire-2.x.git] / src / initscripts / init.d / collectd

#!/bin/sh
# Begin $rc_base/init.d/collecd

. /etc/sysconfig/rc
. $rc_functions

eval $(/usr/local/bin/readhash /var/ipfire/main/settings)

if [ "$RRDLOG" = '' ]; then
	RRDLOG=/var/log/rrd
fi

case "$1" in
	start)
		if use_ramdisk; then
			#mount ramdisk
			if ! mountpoint $RRDLOG &>/dev/null; then
				boot_mesg "Mount rrd Ramdisk..."
				if [ $(find "$RRDLOG" | wc -l) -ne 1 ]; then
					backup_ramdisk "$RRDLOG"
				fi
				mount_ramdisk "$RRDLOG"
				evaluate_retval
				#cleanup cron
				if [ -e $RRDLOG.bak/cron/new.root ]; then
					if [ -e $RRDLOG.bak/cron/root ]; then
						rm -f $RRDLOG.bak/cron/new.root
					fi
				fi
				#restore old values to ramdisk if exist
				restore_ramdisk "$RRDLOG"
			fi
		else
			restore_ramdisk "$RRDLOG"
		fi
			#
			# Move /var/spool/cron to ramdisk and make a symlink
			#
			if [ ! -L /var/spool/cron ]; then
				mv /var/spool/cron /var/log/rrd/cron
				ln -s /var/log/rrd/cron /var/spool/cron
			fi

		# If run from init and collectd alrady started then exit silent
		if [ "$(basename $0)" != "collectd" ]; then
			if [ "$(ps -A | grep " collectd$")" != "" ]; then
				exit 0
			fi
		fi

		# ARM does not support to scan for sensors. In that case,
		# we create an empty configuration file.
		machine=$(uname -m)
		if [ "${machine:0:3}" = "arm" ]; then
			touch /etc/sysconfig/lm_sensors
		fi

		# At first run search for sensors with sensors-detect
		if [ ! -e /etc/sysconfig/lm_sensors ]; then
			boot_mesg "Searching for Sensors..."

			# pre scan and try to load modules
			"yes" | /usr/sbin/sensors-detect > /dev/null
			if [ -e /etc/sysconfig/lm_sensors ]; then

				# Module load
				. /etc/sysconfig/lm_sensors
				for modul in $BUS_MODULES $HWMON_MODULES ; do
					modprobe $modul > /dev/null 2>&1;
				done
			fi

			# Final scan
			"yes" | /usr/sbin/sensors-detect > /dev/null
			evaluate_retval

			if [ ! -e /etc/sysconfig/lm_sensors ]; then
				echo "#No Sensors detected " > /etc/sysconfig/lm_sensors
			fi
		fi

		# Load sensor modules only first start
		if [ ! -e /var/lock/sensors_modules ]; then
			touch /var/lock/sensors_modules

			boot_mesg -n "Loading Sensor Modules: "
			. /etc/sysconfig/lm_sensors
			for modul in $BUS_MODULES $HWMON_MODULES ; do
			modprobe $modul > /dev/null 2>&1;
				if [ ${?} = 0 ]; then
					boot_mesg -n "$SUCCESS$modul$NORMAL ";
				else
					boot_mesg -n "$WARNING$modul$NORMAL ";
				fi
			done
			boot_mesg;
			echo_ok;
		fi

		# Enable sensors plugin if sensors found
		if [ "$( sensors 2>&1 | grep 'No sensors found!' | wc -l )" == "1" ]; then
			sed -i -e "s|^LoadPlugin sensors|#LoadPlugin sensors|g" /etc/collectd.conf
		else
			sed -i -e "s|^#LoadPlugin sensors|LoadPlugin sensors|g" /etc/collectd.conf
		fi

		# Enable thermal plugin if thermal_zone found
		if [ ! -e  /sys/class/thermal/thermal_zone0 ]; then
			sed -i -e 's|^include "/etc/collectd.thermal"$|#include "/etc/collectd.thermal"|g' /etc/collectd.conf
		else
			sed -i -e 's|^#include "/etc/collectd.thermal"$|include "/etc/collectd.thermal"|g' /etc/collectd.conf
		fi

		# Enable swap plugin if swap found
		if [ "$(swapon -s | wc -l)" == "0" ]; then
			sed -i -e "s|^LoadPlugin swap|#LoadPlugin swap|g" /etc/collectd.conf
		else
			sed -i -e "s|^#LoadPlugin swap|LoadPlugin swap|g" /etc/collectd.conf
		fi
		
		# sync after config update...
		sync

		if [ $(date +%Y) -gt 2011 ]; then
			boot_mesg "Starting Collection daemon..."
			/usr/sbin/collectd -C /etc/collectd.conf
			evaluate_retval
		else
			boot_mesg "collectd: cannot start with incorrect time ($(date))."
			echo_warning;
		fi
		;;
	stop)
		boot_mesg "Stopping Collection daemon..."
		killproc /usr/sbin/collectd
		evaluate_retval
		backup_ramdisk "$RRDLOG"
		umount_ramdisk "$RRDLOG"
		# sync after backup...
		sync
		;;
	restart)
		${0} stop
		sleep 1
		${0} start
		;;
	status)
		statusproc /usr/sbin/collectd
		;;

	*)
		echo "Usage: $0 {start|stop|restart|status}"
		exit 1
		;;
esac

# End $rc_base/init.d/collectd