配置方法網上實在實在是很多，如果要更詳細的，大家可以直接到網上找，我不會在這裡寫的非常詳細，不會step by step的講述，最重要的是要知道實現原理！相信看了我下面的原理講解，能對你們看相關文檔帶來更大的協助，因為真的有很多人在對著文檔做的時候更本不知道自己在做什麼！
流程化實現原理：支援PXE的電腦開機（預先開啟網卡PXE功能，網路引導）---> DHCP給該電腦一個IP地址，並指明下一跳tftp檔案伺服器 ---> 電腦去tftp伺服器上（/tftpboot 檔案夾下面）下載到一個叫做 pxelinux.0的檔案，並拿到pxelinux.cfg檔案夾下的default設定檔 ---> 根據該設定檔載入核心等操作，同時該設定檔中可以指明ks.cfg檔案的地址，這樣實現全程無人化安裝！ 基本實現步驟：1.DHCP伺服器配置[root@localhost ~]# cat /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;
allow booting;
allow bootp;
subnet 192.168.1.0 netmask 255.255.255.0 {# --- default gateway
option routers 192.168.1.1;
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 192.168.1.2 192.168.1.10;
default-lease-time 21600;
max-lease-time 43200;
next-server 192.168.1.112;
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;
# }
}2.tftp伺服器配置[root@localhost ~]# cat /etc/xinetd.d/tftp
# default: off
# de.ion: 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
per_source = 11
cps = 100 2
flags = IPv4
}3.準備相關檔案安裝分類樹，ks.cfg，initrd.img，pxelinux.0，pxelinux.cfg，vmlinuzA--把安裝分類樹拷貝到一個共用目錄中，例如，/var/ftp/pub下面，用ftp共用B--ks.cfg也拷貝到 /var/ftp/pub下面C--cp /usr/lib/syslinux/pxelinux.0 /tftpbootcp /media/cdrom/images/pxeboot/{initrd.img,vmlinuz} /tftpbootmkdir /tftpboot/pxelinux.cfgtouch /tftpboot/pxelinux.cfg/defaultdefault檔案內容：（ftp地址自己改）[root@localhost ~]# cat /tftpboot/pxelinux.cfg/default
default linux
prompt 1
timeout 60
display boot.msg
label linux
kernel vmlinuz
append initrd=initrd.img text ks=ftp://192.168.1.112/pub/ks.cfg 有問題可以和我交流，共同進步！
