利用PXE实现多台机子的启动自动安装（以10.1.1.0/24网段为例）
1.安装dhcpd服务yum install dhcpd
2.安装好后配置/etc/dhcpd.conf文件此文件不存在就拷贝， cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf
3.配置此文件内容为
ddns-update-style interim;
ignore client-updates;
allow booting;
allow bootp;
subnet 10.1.1.0 netmask 255.255.255.0 {
# --- default gateway
# option routers 192.168.0.1;
option subnet-mask 255.255.255.0;
# option nis-domain "domain.org";
# option domain-name "domain.org";
# option domain-name-servers 192.168.1.1;
option time-offset -18000; # Eastern Standard Time
# option ntp-servers 192.168.1.1;
# option netbios-name-servers 192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;
range dynamic-bootp 10.1.1.2 10.1.1.254;
default-lease-time 21600;
max-lease-time 43200;
next-server 10.1.1.1;
filename “pxelinux.0”;
# we want the nameserver to appear at a fixed address
# host ns {
# next-server marvin.redhat.com;
# hardware ethernet 12:34:56:78:AB:CD;
# fixed-address 207.175.42.254;
# }
}
4.安装tftp服务，xinetd服务
cd /misc/cd/CentOS下
rpm -ivh xinetd-2.3.14-10.el5.i386.rpm
rpm -ivh tftp-server-0.49-2.el5.centos.i386.rpm
rpm -ivh tftp-0.49-2.el5.centos.i386.rpm
5.修改/etc/xinetd.d/tftp文件，将disable=no
6.启动或者重启xinetd服务
7.拷贝文件到/tftpboot/
cp /usr/lib/syslinux/pxelinux.0 /tftpboot/
cd /misc/cd/p_w_picpaths下
cp pxeboot/initvd.img /tftpboot/
cp pxeboot/vmlinuz /tftpboot/
8回到/tftpboot/目录下cd /tftpboot
9.在/tftpboot/下新建pxelinux.cfg
10.在pxelinux.cfg/目录下新建default文件
11.在default文件中添加内容
default linux
prompt 1
timeout 60
display boot.msg
label linux
kernel vmlinuz
append initrd=initrd.img text ks=http://10.1.1.1/ks.cfg
12.拷贝cp /root/anaconda-ks.cfg /var/www/html/ks.cfg
13.更改 /var/www/html/ks.cfg 的内容为
# Kickstart file automatically generated by anaconda.
install
url --url=http://10.1.1.1
lang en_US.UTF-8
keyboard us
network --device eth0 --bootproto dhcp
rootpw --iscrypted $1$47O45whL$wMKyRmOCBCgC0DzHIdPvh/
firewall --enabled --port=22:tcp
authconfig --enableshadow --enablemd5
selinux --enforcing
timezone --utc Asia/Shanghai
bootloader --location=mbr --driveorder=sda
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
clearpart --linux --initlabel --drives=sda
part /boot --fstype ext3 --size=100 --ondisk=sda
part pv.2 --size=0 --grow --ondisk=sda
volgroup VolGroup00 --pesize=32768 pv.2
logvol / --fstype ext3 --name=LogVol00 --vgname=VolGroup00 --size=1024 --grow
logvol swap --fstype swap --name=LogVol01 --vgname=VolGroup00 --size=512 --grow --maxsize=1024
reboot
%packages
@base
@core
@dns-server
@dialup
@editors
@text-internet
@web-server
keyutils
trousers
fipscheck
device-mapper-multipath
14.拷贝光盘中内容到/var/www/html下
15 启动 xinetd，httpd，dhcpd服务
