实现安装示意图：

1、完整的yum源

#挂载光盘

[root@localhost ~]# mount /dev/cdrom /media/cdrom/

mount: block device /dev/cdrom is write-protected, mounting read-only

#配置yum源

[root@localhost ~]# vim /etc/yum.repos.d/cdrom.repo

[rhel-server]

name=rhel-server

baseurl=file:///media/cdrom/Server

enabled=1

gpgcheck=1

gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release

[rhel-cluster]

name=rhel-cluster

baseurl=file:///media/cdrom/Cluster

enabled=1

gpgcheck=1

gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release

[rhel-clusterstorage]

name=rhel-clusterstorage

baseurl=file:///media/cdrom/ClusterStorage

enabled=1

gpgcheck=1

gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release

[rhel-VT]

name=rhel-vt

baseurl=file:///media/cdrom/VT

enabled=1

gpgcheck=1

gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release

2、dhcp服务

#安装dhcp

[root@localhost ~]# yum install dhcp -y

#拷贝配置文件并编辑配置

[root@localhost ~]# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf

[root@localhost ~]# vim /etc/dhcpd.conf

ddns-update-style interim;

ignore client-updates;

subnet 192.168.2.0 netmask 255.255.255.0 {

# --- default gateway

option routers 192.168.2.1;

option subnet-mask 255.255.255.0;

option nis-domain "domain.org";

option domain-name "domain.org";

option domain-name-servers 192.168.2.1;

next-server 192.168.2.1;

filename "pxelinux.0";

option time-offset -18000; # Eastern Standard Time

range dynamic-bootp 192.168.2.2 192.168.2.128;

default-lease-time 21600;

max-lease-time 43200;

}

[root@localhost ~]# service dhcpd start && chkconfig dhcpd on

3、tftp服务

#安装

[root@localhost ~]# yum install tftp-server -y

#修改服务脚本

[root@localhost ~]# vim /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

disable = no //开启tftp

per_source = 11

cps = 100 2

flags = IPv4

}

#启动服务

[root@localhost ~]# service xinetd restart

Stopping xinetd: [ OK ]

Starting xinetd: [ OK ]

[root@localhost ~]# netstat -tulpn |grep 69

udp 0 0 0.0.0.0:69 0.0.0.0:* 13792/xinetd

#tftpboot目录的配置修改

[root@localhost ~]# cd /tftpboot

[root@localhost tftpboot]# cp /usr/lib/syslinux/pxelinux.0 ./

[root@localhost tftpboot]# cp /media/cdrom/p_w_picpaths/pxeboot/vmlinuz ./

[root@localhost tftpboot]# cp /media/cdrom/p_w_picpaths/pxeboot/initrd.img ./

[root@localhost tftpboot]# mkdir pxelinux.cfg

[root@localhost tftpboot]# cp /media/cdrom/isolinux/isolinux.cfg pxelinux.cfg/default

[root@localhost tftpboot]# vim pxelinux.cfg/default

default linux

prompt 1

timeout 10 //等待时长为10秒

display boot.msg

F1 boot.msg

F2 options.msg

F3 general.msg

F4 param.msg

F5 rescue.msg

label linux

kernel vmlinuz

append ks=ftp://192.168.2.1/pub/ks.cfg ksdevice=eth0 initrd=initrd.img

label text

kernel vmlinuz

append initrd=initrd.img text

label ks

kernel vmlinuz

append ks initrd=initrd.img

label local

localboot 1

label memtest86

kernel memtest

append -

~

"pxelinux.cfg/default" 24L, 411C written

4、ftp服务器

[root@localhost ~]# yum install vsftpd -y

#将光盘的文件及目录均拷贝到ftp的目录下

[root@localhost ~]# cp -a /media/cdrom/* /var/ftp/pub/

#开启服务并设为开启自动启动

[root@localhost ~]# service vsftpd start && chkconfig vsftpd on

5、kickstart产生ks.cfg文件

#安装system-config-kickstart

[root@localhost ~]# yum install system-config-kickstart -y

注意若系统没有安装图形，要先安装桌面

[root@localhost ~]# yum groupinstall "GNOME Desktop Environment" " X Window System" -y

[root@localhost ~]# system-config-kickstart

保存为ks.cfg

注意：key --skip如果是红帽系统，此选项可以跳过输入序列号过程；如果是CentOS 系列，则可以不保留此项内容；reboot 此选项必须存在，也必须文中设定位置，不然kickstart显示一条消息，并等待用户按任意键后才重新引导；clearpart --all --initlabel此条命令必须添加，不然系统会让用户手动选择是否清除所有数据，这就需要人为干预了，从而导致自动化过程失败；因为sendmail及cups开机时很费时，故将其关闭，也可根据需要定义。

#将修改过的文件保存到ftp的根目录下 很重要

[root@localhost ~]#cp /root/ks.cfg /var/ftp/pub/

6、创建新虚拟机测试

安装完成