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PXE Booting and LTSP-4.2 on SMS
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gerasimos_h
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Joined: 09 Aug 2007
Posts: 1644
Location: Greece

PostPosted: Sun Jul 04, 2010 3:05 pm    Post subject: PXE Booting and LTSP-4.2 on SMS Reply with quote

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

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