ltcp/aufgabe4.4/cluster

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2013-12-08 20:13:48 +00:00
#!/bin/bash
function valid_ip()
{
local ip=$1
local stat=1
if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
OIFS=$IFS
IFS='.'
ip=($ip)
IFS=$OIFS
[[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
stat=$?
fi
return $stat
}
function valid_mac()
{
local mac=$1
if [[ $mac =~ ^[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}$ ]]; then
return 0
fi
return 1
}
if [ $# -lt 2 ]
then
echo "Usage: $0 add HOSTNAME IP HWADDR | delete HOSTNAME | set-clone HOSTNAME | set-restore HOSTNAME | set-normal HOSTNAME" >&2
exit 1
fi
if [[ $2 = *[[:space:]]* ]]
then
echo "Hostname must not contain whitespaces"
exit 1
fi
HOSTNAME="$2"
if [ "$1" == "status" ]
then
echo -n "$HOSTNAME is booting "
TARGET="`readlink /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME`"
if [ "$TARGET" == "/pxelinux.cfg/local" ]
then
echo "from local harddisk"
elif [ "$TARGET" == "/pxelinux.cfg/live" ]; then
echo "to live Clonezilla environment"
elif [ "$TARGET" == "/pxelinux.cfg/clone" ]; then
echo "to Clonezilla to clone its harddisk"
elif [ "$TARGET" == "/pxelinux.cfg/live" ]; then
echo "to Clonezilla to restore its harddisk"
fi
exit 0
fi
if [ "$1" == "add" ]
then
if [ $# -lt 4 ]
then
echo "Missing arguments" >&2
exit 1
fi
if ! valid_ip $3; then
echo "Invalid IP: $3" >&2
exit 1
fi
IP="$3"
if ! valid_mac $4; then
echo "Invalid MAC: $4" >&2
exit 1
fi
HWADDR="$4"
grep -q "include \"/etc/dhcpd.d/$HOSTNAME\";" /etc/dhcpd.d/all || echo "include \"/etc/dhcpd.d/$HOSTNAME\";" >> /etc/dhcpd.d/all
[ -e "/etc/dhcpd.d/$HOSTNAME" ] || cat /etc/dhcpd.client.conf | sed "s/HOSTNAME/$HOSTNAME/g" | sed "s/HWADDR/$HWADDR/g" > "/etc/dhcpd.d/$HOSTNAME"
grep -q "$HOSTNAME A $IP" /var/named/zotac.zone || (echo "$HOSTNAME A $IP" >> /var/named/zotac.zone && rndc reload zotac)
ln -sf /srv/tftp/pxelinux/pxelinux.cfg/default /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
if [ "$1" == "delete" ]
then
rm -f "/etc/dhcpd.d/$HOSTNAME"
sed -i "/include \"\/etc\/dhcpd.d\/$HOSTNAME\";/d" /etc/dhcpd.d/all
sed -i "/$HOSTNAME A $IP/d" /var/named/zotac.zone
rndc reload zotac
rm -f /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
if [ "$1" == "set-live" ]
then
sed -i -E "s/^(\s*)#filename \"\/pxelinux.0\";/\\1filename \"\/pxelinux.0\";/" "/etc/dhcpd.d/$HOSTNAME"
ln -sf /pxelinux.cfg/default /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
if [ "$1" == "set-clone" ]
then
sed -i -E "s/^(\s*)#filename \"\/pxelinux.0\";/\\1filename \"\/pxelinux.0\";/" "/etc/dhcpd.d/$HOSTNAME"
ln -sf /pxelinux.cfg/clone /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
if [ "$1" == "set-restore" ]
then
sed -i -E "s/^(\s*)#filename \"\/pxelinux.0\";/\\1filename \"\/pxelinux.0\";/" "/etc/dhcpd.d/$HOSTNAME"
ln -sf /pxelinux.cfg/restore /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
if [ "$1" == "set-local" ]
then
#sed -i -E "s/^(\s*)filename \"\/pxelinux.0\";/\\1#filename \"\/pxelinux.0\";/" "/etc/dhcpd.d/$HOSTNAME"
ln -sf /pxelinux.cfg/local /srv/tftp/pxelinux/pxelinux.cfg/$HOSTNAME
fi
systemctl restart dhcpd4@eth1