1.       vim /etc/selinux/config

1. systemctl stop firewalld
2. systemctl disable firewalld
3. systemctl status firewalld

1. yum install -y dhcp* syslinux xinetd tftp-server httpd

1. tee /etc/dhcp/dhcpd.conf<<EOF
2. #host_change=server Host ip, subnet_change=subnet, netmask_change=netmask, range_start=starting ip, range_end=ending ip,
3. option domain-name "host_change";
4. subnet subnet_change netmask netmask_change{
5. range range_start range_end;
6. option routers host_change;
7. filename "pxelinux.0";
8. next-server host_change;
9. }
10. EOF

1. #read ip address, subnet, netmask, and DHCP network range from user
2. read -p "enter server ip: " s_ip
3. read -p "enter subnet mask: " sub_ip
4. read -p "enter netmask: " net_ip
5. read -p "enter starting ip range:" start_ip
6. read -p "enter ending ip range:" end_ip
7. sed -i -e "s/host_change/${s_ip}/g" /etc/dhcp/dhcpd.conf
8. sed -i -e "s/subnet_change/${sub_ip}/g" /etc/dhcp/dhcpd.conf
9. sed -i -e "s/netmask_change/${net_ip}/g" /etc/dhcp/dhcpd.conf
10. sed -i -e "s/range_start/${start_ip}/g" /etc/dhcp/dhcpd.conf
11. sed -i -e "s/range_end/${end_ip}/g" /etc/dhcp/dhcpd.conf
12. #make directory
13. mkdir /var/lib/tftpboot/pxelinux.cfg
14. #copy pxelinux.0 file to newly created direcoty
15. cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/

1. #configure xinted file
2. tee /etc/xinetd.d/tftp<<EOF
3. #default: off
4. #description: The tftp server serves files using the trivial file transfer \
5. #protocol.  The tftp protocol is often used to boot diskless \
6. #workstations, download configuration files to network-aware printers, \
7. #and to start the installation process for some operating systems.
8. service tftp
9.       {
10.       socket_type          = dgram
11.       protocol                 = udp
12.       wait                        = yes
13.       user                        = root
14.       server                     = /usr/sbin/in.tftpd
15.       server_args           = -s /var/lib/tftpboot
16.       disable                   = no
17.       per_source            = 11
18.       cps                          = 100 2
19.       flags                       = IPv4
20.       }
21. EOF

1. #create a directory and copy all boot related files
2. mkdir -p /var/pxe/centos7
3. mkdir -p /var/lib/tftpboot/centos7
4. mount -t iso9660 -o loop /dev/cdrom /var/pxe/centos7/
5. cp /var/pxe/centos7/images/pxeboot/vmlinuz /var/lib/tftpboot/centos7/
6. cp /var/pxe/centos7/images/pxeboot/initrd.img /var/lib/tftpboot/centos7/
7. cp /usr/share/syslinux/menu.c32 /var/lib/tftpboot/ 

1. #configure pxelinux.cfg file
2. tee /var/lib/tftpboot/pxelinux.cfg/default<<EOF
3. #server_ip
4. timeout 100
5. default menu.c32
6. menu title #######PXE BOOT MENU####
7. label 1
8.       menu label ^1) Install centos7
9.      kernel centos7/vmlinuz
10.                      append initrd=centos7/initrd.img ks=http://host_change/ks/centos7-ks.cfg method=http://host_change/centos7/ devfs=nomount
11. label 2
12.       menu label ^2) Boot from local drive
13.                     localboot
14. EOF
15. sed -i -e "s/host_change/${s_ip}/g" /var/lib/tftpboot/pxelinux.cfg/default

1. #configure pxeboot.conf file
2. tee /etc/httpd/conf.d/pxeboot.conf<<EOF
3. #subnet_ip
4. Alias /centos7 /var/pxe/centos7
5. <Directory /var/pxe/centos7>
6. options Indexes FollowSymlinks
7. Require ip 127.0.0.1 subnet_change/24
8. </Directory>
9. EOF
10. sed -i -e "s/subnet_change/${sub_ip}/g" /etc/httpd/conf.d/pxeboot.conf

1. #kickstart
2. #python -c 'import crypt,getpass;print(crypt.crypt(getpass.getpass(),crypt.mksalt(crypt.METHOD_SHA512)))' > pass.txt
3. mkdir /var/www/html/ks
4. tee /var/www/html/ks/centos7-ks.cfg<<EOF
5. #create new
6. install
7. # automatically proceed for each steps
8. autostep
9. #reboot after installing
10. reboot
11. #encrypt algorithm
12. auth --enableshadow --passalgo=sha512
13. #installation source
14. url --url=http://host_change/centos7/
15. # install disk
16. ignoredisk --only-use=sda
17. # keyboard layouts
18. keyboard --vckeymap=jp106 --xlayouts='jp','us'
19. # system locale
20. lang en_US.UTF-8
21. # network settings
22. network --bootproto=dhcp --ipv6=auto --activate --hostname=localhost
23. #root password you generated above
24. #rootpw --iscrypted < pass.txt
25. #timezone
26. timezone Asia/Tokyo --isUtc --nontp
27. #bootloader's settings
28. bootloader --location=mbr --boot-drive=sda
29. #initialize all partition tables
30. zerombr
31. clearpart --all --initlabel
32. #partitioning
33. autopart --type=lvm
34. #part /boot --fstype="xfs" --ondisk=sda --size=500
35. #part pv.10 --fstype="lvmpv" --ondisk=sda --size=51200
36. #volgroup VolGroup --pesize=4096 pv.10
37. #logvol / --fstype="xfs" --size=20480 --name=root --vgname=VolGroup
38. #logvol swap --fstype="swap" --size=4096 --name=swap --vgname=VolGroup
39. %packages
40. @core
41. %end
42. EOF
43. sed -i -e "s/host_change/${s_ip}/g" /var/www/html/ks/centos7-ks.cfg

1. systemctl start xinetd
2. systemctl enable xinetd
3. systemctl start httpd
4. systemctl enable httpd
5. systemctl start dhcpd
6. systemctl enable dhcpd
7. systemctl start tftp
8. systemctl enable tftp

Kickstart File