View source for MAC based Booting PXE

= MAC Based booting =

Installing with PXE and FAI MAC Address based.

With this hooks and some small changes in dhcpd.conf (based on FAI-CD) every computer that boots fai gets a MAC based config file installed in the pxelinux.cfg/ dir. May be in the future a GUI can use/change this information. 

== File dhcpd.conf ==
<pre>
....
# deny unknown-clients
....
subnet 192.168.1.0 netmask 255.255.255.0
{
  range 192.168.1.200 192.168.1.249;
  ....
</pre>

If you press <shift> key during pxe booting you can get a prompt. 

Possible commands are: 
 mkboot HOST=local  
 mkboot HOST=remove 
 .....
 mkboot HOST=demohost
 .....

== Hook mkboot ==

<pre>
#! /bin/bash 
# hook mkboot for fai.
# If you start this script on a fai client it copy, create or delete a pxe bootfile. It use the ethernet mac
# address of the fai client. 

cd /tmp 
TFTPCONFDIR="/boot/fai/pxelinux.cfg"
SSHUSER=fai
TFTPSERVER=faiserver

HOSTNAME="default"
if [ "$HOST" != "" ]; then HOSTNAME=$HOST; fi ;
BOOTMAC=`/sbin/ifconfig "$netdevices_up" |grep HWaddr|cut -d " " -f11|tr ':' '-'|tr '[:upper:]' '[:lower:]'`
BOOTMAC="01-"$BOOTMAC
echo Next Boot will boot or install: $HOSTNAME on $BOOTMAC.
echo "!!! OK - Press ctrl-c to interrupt FAI and to get a shell"

case $HOSTNAME in
    disable)
        ssh $SSHUSER@$TFTPSERVER "mv $TFTPCONFDIR/$BOOTMAC $TFTPCONFDIR/$BOOTMAC\.disable" ;;
    local)
        ssh $SSHUSER@$TFTPSERVER "mv $TFTPCONFDIR/$BOOTMAC $TFTPCONFDIR/$BOOTMAC\.disable ; cp $TFTPCONFDIR/local $TFTPCONFDIR/$BOOTMAC " ;;
    enable)
        ssh $SSHUSER@$TFTPSERVER "mv $TFTPCONFDIR/$BOOTMAC\.disable $TFTPCONFDIR/$BOOTMAC" ;;
    remove)
        ssh $SSHUSER@$TFTPSERVER "rm $TFTPCONFDIR/$BOOTMAC" ;;
    *)
        ssh $SSHUSER@$TFTPSERVER "cp $TFTPCONFDIR/$HOSTNAME $TFTPCONFDIR/$BOOTMAC" ;;
esac

task_faiend

# End of mkboot
</pre>

== Hook chboot.default ==

<pre> 
#! /bin/sh 
# hook for fai. Set boot to local 
set -xv

SCRIPTNAME=`basename $0`
skiptask=`echo $SCRIPTNAME | sed "s/\..*$//"`

cd /tmp 
TFTPCONFDIR="/boot/fai/pxelinux.cfg"
SSHUSER=fai
TFTPSERVER=faiserver

HOSTNAME="local"

BOOTMAC=`/sbin/ifconfig "$netdevices_up" |grep HWaddr|cut -d " " -f11|tr ':' '-'|tr '[:upper:]' '[:lower:]'`
BOOTMAC="01-"$BOOTMAC
echo Next Boot will boot or install: $HOSTNAME on $BOOTMAC.

case $HOSTNAME in
    local)
        ssh $SSHUSER@$TFTPSERVER "mv $TFTPCONFDIR/$BOOTMAC $TFTPCONFDIR/$BOOTMAC\.disable ; cp $TFTPCONFDIR/local $TFTPCONFDIR/$BOOTMAC " ;;
    *)
        ssh $SSHUSER@$TFTPSERVER "cp $TFTPCONFDIR/$HOSTNAME $TFTPCONFDIR/$BOOTMAC" ;;
esac

skiptask $skiptask 

# End of hook chboot.DEFAULT
</pre>

== File: /boot/fai/pxelinux.cfg/default ==
<pre>
default sysinfo

label sysinfo
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=mkboot HOST=sysinfo root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt,reboot

label mkboot
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=mkboot root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt,reboot
</pre>

== File: /boot/fai/pxelinux.cfg/local ==
<pre>
default local

label local
localboot 0

label mkboot
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=mkboot root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt,reboot
</pre>

== File: /boot/fai/pxelinux.cfg/demohost ==
<pre>
default demohost

label demohost
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=install HOST=demohost root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt

label mkboot
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=mkboot root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt,reboot

</pre>

== File: /boot/fai/pxelinux.cfg/sysinfo ==

<pre>
default sysinfo

label sysinfo
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=sysinfo root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt

label mkboot
kernel vmlinuz-install
append ip=dhcp devfs=nomount FAI_ACTION=mkboot root=/dev/nfs nfsroot=/usr/lib/fai/nfsroot,v2,rsize=32768,wsize=32768  FAI_FLAGS=verbose,sshd,createvt,reboot
</pre>