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PXE Booting and LTSP-4.2 on SMS

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gerasimos_h
Site Admin

Joined: 09 Aug 2007
Posts: 1757
Location: Greece

Posted: Sun Jul 04, 2010 3:05 pm Post subject: PXE Booting and LTSP-4.2 on SMS

1st scenario is to be able to boot SMS.Live.CD over the network or any other linux-live based live cd with kernel 2.6.33.5.

You will need to download the initrd from
http://sms.it-ccs.com/isos/Testing/PXEBoot/initrd.gz

To enable PXE booting we need to uncomment in /etc/inetd.conf

Code:

# tftp  dgram   udp     wait    root    /usr/sbin/in.tftpd  in.tftpd -s /tftpboot -r blksize

Create the dirs

Code:

mkdir -p /tftpboot/sms/pxelinux.cfg

Set our NFS server to export /tftpboot/sms
Add in /etc/exports

Code:

/tftpboot/sms *(ro,sync,all_squash,no_subtree_check)

Copy pxelinux.0 from syslinux directory

Code:

cp /usr/share/syslinux/pxelinux.0 /tftpboot/sms/

Copy the contents of SMS.Live.CD to /tftpboot/sms (2 folders sms boot)
replacing
/tftpboot/sms/initrd.gz
/tftpboot/sms/boot/initrd.gz
with the provided one on top of this thread.

Under /tftpboot/sms/pxelinux.cfg create a file called default which can be /boot/sms.cfg from SMS.Live.CD.
A simple default file could be

Code:

PROMPT 0

TIMEOUT 70

LABEL sms

KERNEL /boot/vmlinuz

APPEND vga=791 initrd=/boot/initrd.gz ramdisk_size=8888 root=/dev/ram0 rw

To be able all to work we need a dhcp server
Assuming your sms server is 192.168.0.1 and your router 192.168.0.254 add to your /etc/dhcpd.conf

Code:

# Allow bootp requests

allow bootp;

# Point to the TFTP server:

next-server 192.168.0.1;

subnet 192.168.0.0 netmask 255.255.255.0 {

range 192.168.0.130 192.168.0.143;

default-lease-time 3600;

max-lease-time 604800;

option routers 192.168.0.254;

option domain-name-servers 192.168.0.1;

option subnet-mask 255.255.255.0;

option domain-name "local.domain";

range dynamic-bootp 192.168.0.150 192.168.0.160;

use-host-decl-names on;

option time-offset -8;

if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {

      filename "/sms/pxelinux.0";

}

}

If you do not have an rc.dhcpd start up script create one
/etc/rc.d/rc.dhcpd

Code:

#!/bin/sh

#

# /etc/rc.d/rc.dhcpd

#      This shell script takes care of starting and stopping

#      the ISC DHCPD service

#

# Put the command line options here that you want to pass to dhcpd:

DHCPD_OPTIONS="-q eth0"

[ -x /usr/sbin/dhcpd ] || exit 0

[ -f /etc/dhcpd.conf ] || exit 0

start() {

      # Start daemons.

      echo -n "Starting dhcpd:  /usr/sbin/dhcpd $DHCPD_OPTIONS "

      /usr/sbin/dhcpd $DHCPD_OPTIONS

      echo

}

stop() {

      # Stop daemons.

      echo -n "Shutting down dhcpd: "

      killall -TERM dhcpd

      echo

}

status() {

  PIDS=$(pidof dhcpd)

  if [ "$PIDS" == "" ]; then

    echo "dhcpd is not running!"

  else

    echo "dhcpd is running at pid(s) ${PIDS}."

  fi

}

restart() {

      stop

      start

}

# See how we were called.

case "$1" in

  start)

        start

        ;;

  stop)

        stop

        ;;

  restart)

        stop

        start

        ;;

  status)

        status

        ;;

  *)

        echo "Usage: $0 {start|stop|status|restart}"

        ;;

esac

exit 0

Start/Restart services

Code:

/etc/rc.d/rc.inetd restart

/etc/rc.d/rc.rpc start

/etc/rc.d/rc.nfsd start

/etc/rc.d/rc.dhcpd start

You now ready to boot from network.

2nd scenario is to boot LTSP-4.2.

For that scenario the only thing you have to do is to download and install
http://sms.it-ccs.com/isos/SMS-Current/extra/LTSP/ltsp-4.2-i386-1sms.txz
It will create all appropriate confs and dirs and start LTSP with your current IP address.
Requirements are x-kde-addon package to be installed and will change your default runlevel to 4 (X11 session manager).

LTSP-4.2 provided as is at
http://tp.mirrors.tds.net/pub/ltsp/ltsp-4.2/
with kernel 2.6.20.9-ltsp-1

LTSP demo on action taking 20" to load login manager on virtualbox client.

gerasimos_h
_________________
Superb! Mini Server Project Manager
http://sms.it-ccs.com

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