ubuntunboot

#!/bin/bash
#
# Generate the pxelinux config for new systems.
#

#set -e


usage(){
        cat << EOF
        Usage: $0 --host=<hostname> --ip=<ip> --netmask=<netmask> --gateway=<gateway>
        Options:
        --host=<hostname>               Name for new host
        --ip=<ip>                       ip for new host
        --netmask=<netmask>             Netmask for new host
        --gateway=<gateway>             Gateway for new host
        --i386                          Set the arch to i386, default is amd64
        --verbose                       Verbose mode. Silent without this
        --help                          Print this help
EOF
        exit 1
}

if [ $# -lt 4 ]; then
  usage
fi

host=""
ip=""
netmask=""
gateway=""
verbose=""
arch=""

SHORTOPTS="H:i:n:g:vhI"
LONGOPTS="host:,ip:,netmask:,gateway:,i386,verbose,help"
OPTS=$(getopt -o $SHORTOPTS --long $LONGOPTS -n "$progname" -- "$@")

while [ $# -gt 0 ]; do
  case $1 in
    -H|--host)
      host="$2"
      shift 2;;
    -i|--ip)
      ip="$2"
      shift 2;;
    -n|--netmask)
      netmask=$2
      shift 2;;
    -g|--gateway)
      gw=$2
      shift 2;;
    -v|--verbose)
      verbose="true"
      shift;;
    -I|--i386)
      arch=".i386"
      shift;;
    -h|--help)
      usage;;
    --)
      shift
      break;;
    *)
      usage;; 
  esac
done    

if [[ -z "$host" || -z "$ip" || -z "$netmask" || -z "$gw" ]]; then
  usage
fi

if [ "$verbose" = "true" ]; then
  set -x
fi

# Templates to generate configs for new hosts
PXETEMPLATE=/var/lib/tftpboot/hardy${arch}/pxelinux.cfg/default.template
SEEDTEMPLATE=/var/www/preseed/hardy-preseed.template
NAMESERVERS="10.1.0.52 10.1.0.51 10.1.0.84"
PRESEED="/var/www/preseed/hardy-preseed-${host}.txt"

for i in $(echo ${ip}| sed -e "s/\./ /g"); do 
   HEXIP=${HEXIP}`printf '%02X' $i`
done

sed "s/_HOST_/${host}/g" $PXETEMPLATE > /var/lib/tftpboot/hardy${arch}/pxelinux.cfg/$HEXIP

sed "s/_HOST_/${host}/" $SEEDTEMPLATE > $PRESEED
sed -i "s/_IP_/${ip}/" $PRESEED
sed -i "s/_NETMASK_/${netmask}/" $PRESEED
sed -i "s/_GW_/${gw}/" $PRESEED