1. Install with Mimnum Install and choose Compatibility Libraries

2. Assign Static IP

3. Disable SELinux and Firewall

4. vim /etc/selinux/config
SELINUX=disabled

5. systemctl disable firewalld

systemctl stop firewalld

6. Install the following packages
yum install -y dhcp tftp-server syslinux wget vsftpd xinetd

7. # Configure dhcp
vim /etc/dhcp/dhcpd.conf

[root@PXEBOOT1 ~]# cat /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.example
#   see dhcpd.conf(5) man page
#
ddns-update-style interim;
ignore client-updates
authoritative;
allow booting
allow bootp
allow-unknown-clients
#internal subnets
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.201 192.168.1.250;
option domain-name-servers 192.168.1.101
option domain-name "Bhagyasthaan";
option routers 192.168.1.101;
default-lease-time 600;
max-lease-time 7200;

#PXE Server IP
next-server 192.168.1.101;
filename "pxelinux.0";
}


8. # Setup TFTP Server Configuration

[root@PXEBOOT1 ~]# cat /etc/xinetd.d/tftp
# default: off
# description: The tftp server serves files using the trivial file transfer \
#       protocol.  The tftp protocol is often used to boot diskless \
#       workstations, download configuration files to network-aware printers, \
#       and to start the installation process for some operating systems.
service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -s /tftpboot # changed thsi from default to /tftpboot and we shall make a directory called as tftpboot
        disable                 = no # changed this from yes to no
        per_source              = 11
        cps                     = 100 2
        flags                   = IPv4
}
[root@PXEBOOT1 ~]#

9. Now copy syslinux files to tftpboot

[root@PXEBOOT1 ~]# cp -pavf /usr/share/syslinux/pxelinux.0 /tftpboot/
‘/usr/share/syslinux/pxelinux.0’ -> ‘/tftpboot/pxelinux.0’
[root@PXEBOOT1 ~]# cp -pavf /usr/share/syslinux/menu.c32 /tftpboot/
‘/usr/share/syslinux/menu.c32’ -> ‘/tftpboot/menu.c32’
[root@PXEBOOT1 ~]# cp -pavf /usr/share/syslinux/memdisk /tftpboot/
‘/usr/share/syslinux/memdisk’ -> ‘/tftpboot/memdisk’
[root@PXEBOOT1 ~]# cp -pavf /usr/share/syslinux/mboot.c32 /tftpboot/
‘/usr/share/syslinux/mboot.c32’ -> ‘/tftpboot/mboot.c32’
[root@PXEBOOT1 ~]# cp -pavf /usr/share/syslinux/chain.c32 /tftpboot/
‘/usr/share/syslinux/chain.c32’ -> ‘/tftpboot/chain.c32’
[root@PXEBOOT1 ~]#

10. Create a directory under /tftpboot

11. [root@PXEBOOT1 ~]# mkdir /tftpboot/pxelinux.cfg

12. Create a netboot folder and this needs to live under /tftpboot folder

mkdir /tftpboot/netboot

13. Now you need to do wget to download CentOS 7 image. You can ftp as well if you already have image.

wget http://centos.mirror.serversaustralia.com.au/7/isos/x86_64/CentOS-7-x86_64-DVD-1804.iso

14. Mount CentOS image to /mnt
mount -o loop CentOS-7-x86_64-DVD-1804.iso /mnt

15. Copy Extracted files from CentOS 7 to /var/ftp/pub/

cp -r /mnt/* /var/ftp/pub/

16. Copy some files to /tftpboot/netboot location

[root@PXEBOOT1 ~]# cp -apvf /mnt/images/pxeboot/vmlinuz /tftpboot/netboot/
‘/mnt/images/pxeboot/vmlinuz’ -> ‘/tftpboot/netboot/vmlinuz’
[root@PXEBOOT1 ~]# cp -apvf /mnt/images/pxeboot/initrd.img /tftpboot/netboot/
‘/mnt/images/pxeboot/initrd.img’ -> ‘/tftpboot/netboot/initrd.img’
[root@PXEBOOT1 ~]

17. Now create the root password for the automated install

[root@PXEBOOT1 ~]# openssl passwd -1 jim
$1$hBplWl9M$drAkUSbJrtvrHCpAANflb1

18. Create your kickstart file.

[root@PXEBOOT1 ~]# cat /var/ftp/pub/ks.cfg
# Installation logging level
logging --level=debug
install

lang en_US.UTF-8

keyboard us

timezone  Australia/Melbourne

auth --useshadow --enablemd5

selinux --permissive

firewall --enabled

services --enabled=NetworkManager, sshd

eula --agreed

#Use FTP Location
url --url="ftp://192.168.1.101/pub/"

bootloader --location=mbr

# Clear the Master Boot Record
zerombr

clearpart --all --initlabel
part swap --asprimary --fstype="swap" --size=1024
part /boot --fstype xfs --size=50
part pv.01 --size=1 --grow
volgroup rootvg01 pv.01
logvol / --fstype xfs --name=lv01 --vgname=rootvg01 --size=1 --grow
rootpw --iscrypted $1$hBplWl9M$drAkUSbJrtvrHCpAANflb1

%packages
@base
@gnome-desktop
vim
vim-X11
wget
nmap
%end

reboot
[root@PXEBOOT1 ~]#

19. Validate your kickstart file
[root@PXEBOOT1 ~]# ksvalidator /var/ftp/pub/ks.cfg
[root@PXEBOOT1 ~]# ksvalidator /var/ftp/pub/ks.cfg
yum install pykickstart

20. 
Menu file!

[root@PXEBOOT1 ~]# cat /tftpboot/pxelinux.cfg/default
default menu.c32
prompt 0
timeout 300
MENU TITLE Ameya Agashe PXE Menu

LABEL CentOS7_X64
MENU LABEL CentOS 7 X64
KERNEL netboot/vmlinuz
APPEND initrd=netboot/initrd.img inst.repo=ftp://192.168.1.101/pub ks=ftp://192.168.1.101/pub/ks.cfg

Likewise you can create many labels for many other operating systems


21. Now enable and start essential services

systemctl enable dhcpd
systemctl enable xinetd
systemctl enable vsftpd

systemctl start dhcpd
systemctl start xinetd
systemctl start vsftpd

22. Commission  server, two important conditions
1. It should boot off network.
2. Should be in same network like Bridged Adapter