Installing linux over network using kickstart

What is required?

LAN infrastructure for network communication.
NFS, FTP or HTTP Service for data transfer.
DHCP service for ip distribution.
TFTP service for booting from network.
Linux OS kernel image.
Bootloader binary.
Linux installation tree should be accessible from nfs,http or ftp.

LAN infrastructure:

Client must have pxe supported NIC.
Network devices on the LAN have to carry bootp packages

HTTP service (we can use http service):

DocumentRoot /var/www/html (contains linux installation tree and repository)
ServerName <Server Name>
url might be like http://192.168.1.10/rhrepos/6.2-x86_64/

DHCP service:
ddns-update-style interim;
ignore client-updates;
authoritative;
allow booting;
allow bootp;
subnet <ip subnet> netmask <ip netmask>
{
option routers <router ip>;
option subnet-mask <ip netmask>;
option domain-name "<domain name>";
option domain-name-servers <dns server ip>;
range dynamic-bootp <starting address for ip distribution block> <ending address for ip distribution block> ;
default-lease-time 21600;
max-lease-time 43200;
next-server <tftp server ip>;
filename "pxelinux.0";
}

TFTP Service (required files should be copied to /tftpboot directory):

menu.c32 (menu binary for displaying menu list)
initrd.img (bootloader image)
vmlinuz (Linux kernel image)

/tftpboot/pxelinux.cfg/default should look like:

Main Menu

DEFAULT menu.c32

MENU TITLE Red Hat Enterprise Linux Installation

TIMEOUT 200

ALLOWOPTIONS 0

NOESCAPE 1

PROMPT 0

LABEL RHEL-6.2-x86_64

MENU LABEL Redhat EL 6.2 64-bit

kernel vmlinuz-RHEL6.2-x86_64

append initrd=initrd-RHEL6.2-x86_64.img ks=http://192.168.1.10/rhrepos/6.2-x86_64/ks-RHEL-6.2-x86_64.cfg

MENU END

Kickstart Answer File (you can use kickstart configurator system-config-kickstart):
#platform=x86, AMD64, or Intel EM64T
# System authorization information
auth --useshadow --enablemd5
# System bootloader configuration
bootloader --location=mbr
# Partition clearing information
clearpart --all --initlabel
# Use graphical install
graphical
# Skip installation key
key --skip
# Firewall configuration
firewall --disabled
# Run the Setup Agent on first boot
firstboot --disable
# System keyboard
keyboard trq
# System language
lang en_US
# Installation logging level
logging --level=info
# Use network installation
url --url=http://192.168.1.10/rhrepos/6.2-x86_64/
# Network information
network --bootproto=dhcp --device=eth0 --onboot=on
# Reboot after installation
reboot
#Root password
rootpw --iscrypted sdfDßggasd'3$#>£.

# SELinux configuration
selinux --disabled
# Do not configure the X Window System
skipx
# System timezone
timezone Europe/Istanbul
# Install OS instead of upgrade
install
# Disk partitioning information
part /boot --fstype="ext3" --size=200
part swap --fstype="swap" --recommended
part /tmp --fstype="ext3" --size=2048
part / --fstype="ext3" --grow --size=1

%packages
@ X Window System
@ Desktop
nfs-utils
samba-client

%post
groupadd -g 1453 <normal user>
useradd -d /home/<normal user> -g <normal user> -u 1071 -s /bin/bash -p sdfDßggasd'3$#>£. <normal user>