#!/bin/sh

#
# Startup a Linux cluster
# Version 0.1
# spd at daphne.cps.unizar.es
# Tue Nov 22 16:12:59 CET 2005
#
# Requires wakeonlan <http://gsd.di.uminho.pt/jpo/software/wakeonlan/>
#

VERSION="0.1"


DO=echo

HOSTS=${HOSTS:="setme"}
#HOSTS=setme
HOSTNAME=`hostname`

#
# Customize this so "HOSTS" is the list of your nodes
#
if [ "$HOSTS" = "setme" ]
then
	HOSTS=`awk '/^192.*atpc-n/{print $3}' /etc/hosts`
fi


CMD=`basename $0`
usage()
{
echo "Use: $0 -VIDhny"
echo "         -V: version"
#echo "         -I: internet version"
#echo "         -D: download and install update"
echo "         -h: help"
echo "         -n: do nothing (default)"
echo "         -y: do it"
	exit 1
}

set -- `getopt VIDhny $*`
for i in $*
do
	case $i in
	-y) DO=; shift;;
	-n) DO=echo; shift;;
	-V) echo "$VERSION"; exit 0;;
	-I)
		echo "not implemented"
		exit 1
		;;
	-D)
		echo "not implemented"
		exit 1
		;;
	-h)
		usage
		;;
	esac
done


WAKE=/usr/local/etc/wakeonlan

getmac()
{
	awk -F"[ ;]" "/host $1 /"'{h=1;}
	/hardware ethernet/ {if (h==1) { h=0; print $3;}} ' /etc/dhcpd.conf
}


echo "#### Encendiendo el cluster."


for f in $HOSTS
do
	if [ "$f" != "atpc-n01" ]
	then
		echo "##" $f
		MAC=`getmac $f`
		if [ "_$MAC" != "_" ]
		then
			$DO $WAKE -i 192.168.0.255 $MAC
		fi
	fi
done