1. Environment:
#Author: WangKeZhen
#mail:[email protected]
Please execute as root user
Environment: Configure two network cards as much as possible, and the virtual machine can be connected to the Internet. 
2. Install dhcp, tftp, httpd server, graphical tools for kickstart files
########################################### ## Configure yum source ## ########################################### mount /dev/cdrom /mnt rm -rf /etc/yum.repos.d/rhel-source.repo touch /etc/yum.repos.d/rhel-source.repo cat >> /etc/yum.repos.d/rhel-source.repo << EOF [rhel-source] name=Red Hat Enterprise baseurl=file:///mnt enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release EOF #############################################
yum install -y dhcp tftp-server syslinux httpd system-config-kickstart
3. Configure dhcp
[root@jtxy ~]# vim /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.example
# see dhcpd.conf(5) man page
#
subnet 192.168.177.0 netmask 255.255.255.0 {
range 192.168.177.30 192.168.177.60;
option domain-name-servers 192.168.177.6;
option domain-name "jtxy.com";
option routers 192.168.0.1;
option broadcast-address 192.168.177.255;
default-lease-time 3600;
max-lease-time 7200;
next-server 192.168.177.6; #Designate to this machine to download the file pxelinux.0
filename "/pxelinux.0"; #This file is a binary file, the content is to find the startup configuration file isolinux.cfg
}
systemctl restart dhcpd.service netstat -antup | grep dhcpd #Check if the port is started
4. Configure tftp and enable tftp function
xinetd is a daemon process
vim /etc/xinetd.d/tftp #xinetd is a daemon process disable = no systemctl restart tftp cat /etc/services | grep tftp netstat -anplut | grep :69 #Check if tftp port is open
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 /var/lib/tftpboot #tftp will share the files in this directory
disable = no
per_source = 11
cps = 100 2
flags=IPv4
}
tftp shares the files in the /var/lib/tftpboot directory
PXE (Pre-boot Execution Environment, Pre-boot Execution Environment) PXE is a protocol that can #boot the operating system through the network without installing the operating system in the local disk.
The pxelinux.cfg directory contains basic information for managing PXELINUX configuration files
mkdir /var/lib/tftpboot/pxelinux.cfg cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/ mkdir /mnt/cdrom mount /dev/cdrom /mnt/cdrom
CD-ROM files required for installation
cp /mnt/cdrom/isolinux/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default cp /mnt/cdrom/isolinux/* /var/lib/tftpboot/ chmod 644 /var/lib/tftpboot/pxelinux.cfg/default
5. Configuration startup file
vim /var/lib/tftpboot/pxelinux.cfg/default
default linux #Find the linux option, edit it, do not modify the others
timeout 600
label linux
menu label ^Install Red Hat Enterprise Linux 7.0
kernel vmlinuz
append initrd=initrd.img ks=http://192.168.177.6/ks.cfg inst.repo=http://192.168.177.6/cdrom quiet
#ks: Specify configuration options for the installation process inst.repo: Specify the location of the installation CD
6. Configure kickstart
1. Mount the CD to the website directory
mkdir /var/www/html/cdrom mount /dev/cdrom /var/www/html/cdrom systemctl restart httpd #Test: access CD via http firefox 192.168.177.7/cdrom
2. Configure the kickstart file
Kickstart is a way to automate the installation of Red Hat systems, similar to automated installs in Windows and preconfiguration and automation scripts in #Linux
Kickstart configuration mainly consists of a text file, usually called ks.cfg file, which contains all the information needed for the installation process, such as partitions, users, software packages, network configuration, and so on. The installer can automatically read this file at startup and perform an automated installation according to the configuration options and parameters specified in it
system-config-kickstart
Save to /var/www/html/ks.cfg
3. Improve the ks.cfg file
vim /var/www/html/ks.cfg
%packages
@^graphical-server-environment
@base
@core
@desktop-debugging
@dial-up
@fonts
@gnome-desktop
@guest-agents
@guest-desktop-agents
@hardware-monitoring
@input-methods
@internet-browser
@kde-desktop
@multimedia
@print-client
@x11
kexec-tools
%end
systemctl restart httpd.service
7. Create a new virtual machine for testing. If the system can be automatically installed after booting, it means success
