一、準(zhǔn)備階段

1、準(zhǔn)備環(huán)境

Vmware workstation

Centos7一臺(tái)做pxe-server

地址:192.168.138.5

子網(wǎng)掩碼：255.255.255.0

網(wǎng)關(guān)：192.168.138.2

關(guān)閉selinux和防火墻

2、安裝方式

Kickstart安裝。 Kickstart是一種無(wú)人值守的安裝方式。它的工作原理是在安裝過(guò)程中記錄典型的需要人工干預(yù)填寫(xiě)的各種參數(shù)，并生成一個(gè)名為ks.cfg的文件。安裝程序首先會(huì)去查找Kickstart生成的文件，如果找到合適的參數(shù)，就采用這些參數(shù)；安裝程序會(huì)根據(jù)ks.cfg中的設(shè)置重啟系統(tǒng)，并結(jié)束安裝。

3、網(wǎng)卡配置

網(wǎng)卡選擇hostonly模式，取消hostonly模式的dhcp功能。

二、安裝階段

因?yàn)楹竺嬉玫絪ystem-config-kickstart工具生成ks文件，它必須依賴(lài)于X Windows，所以我們要提前安裝好桌面環(huán)境。

yum-y groupinstall ‘X Window System'

yum-y groupinstall ‘GNOME Desktop Environment'

1、安裝httpd

需要http的環(huán)境存放系統(tǒng)鏡像文件和ks文件，所以先安裝http

yum install httpd

Systemctl start httpd

訪(fǎng)問(wèn)http://192.168.138.5

配置yum
mount /dev/cdrom /mnt
cd /mnt

2、安裝tftp-server

yum-y install tftp-server

修改/etc/xinetd.d/tftp,將disable的值由yes變?yōu)閚o

service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /var/lib/tftpboot
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}

重啟xinetd進(jìn)程，若沒(méi)有xinetd則需要yum安裝

systemctl restart xinetd.service

新建tftpboot文件夾

mkdir -p /var/lib/tftpboot

3、復(fù)制pxe文件

安裝syslinux，并復(fù)制pxelinux.0文件到/var/lib/tftpboot中

cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot

新建/var/www/html/cdrom,并掛載

Mount /dev/cdrom /var/www/html/cdrom

yum源配置

將光盤(pán)上的initrd.img和vmlinuxz復(fù)制到/var/lib/tftpboot中

cp /var/www/html/cdrom/images/pxeboot/initrd.img /var/lib/tftpboot
cp /var/www/html/cdrom/images/pxeboot/vmlinuz /var/lib/tftpboot
cp /var/www/html/cdrom/isolinux/boot.msg /var/lib/tftpboot

在tftpboot中新建一個(gè)pxelinux.cfg目錄

mkdir pxelinux.cfg

將cdrom目錄中的isolinux.cfg復(fù)制到pxelinux.cfg目錄中，同時(shí)更改文件名稱(chēng)為default
cp /var/www/html/cdrom/isolinux/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default
編輯default文件
配置如下

default vesamenu.c32
timeout 6000
display boot.msg
#Clear the screen when exiting the menu, instead of leaving the menu displayed.
#For vesamenu, this means the graphical background is still displayed without
#the menu itself for as long as the screen remains in graphics mode.
menu clear
menu background splash.png
menu title CentOS 7
menu vshift 8
menu rows 18
menu margin 8
#menu hidden
menu helpmsgrow 15
menu tabmsgrow 13
#Border Area
menu color border * #00000000 #00000000 none

#Selected item
menu color sel 0 #ffffffff #00000000 none

#Title bar
menu color title 0 #ff7ba3d0 #00000000 none

#Press [Tab] message
menu color tabmsg 0 #ff3a6496 #00000000 none

#Unselected menu item
menu color unsel 0 #84b8ffff #00000000 none

#Selected hotkey
menu color hotsel 0 #84b8ffff #00000000 non

#Unselected hotkey
menu color hotkey 0 #ffffffff #00000000 none
#Help text
menu color help 0 #ffffffff #00000000 none

#A scrollbar of some type? Not sure.
menu color scrollbar 0 #ffffffff #ff355594 none

#Timeout msg
menu color timeout 0 #ffffffff #00000000 none
menu color timeout_msg 0 #ffffffff #00000000 none

#Command prompt text
menu color cmdmark 0 #84b8ffff #00000000 none
menu color cmdline 0 #ffffffff #00000000 none

#Do not display the actual menu unless the user presses a key. All that is displayed is a timeout message.

menu tabmsg Press Tab for full configuration options on menu items.

menu separator # insert an empty line
menu separator # insert an empty line

label linux
menu label ^Install CentOS 7
kernel vmlinuz
#append initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 quiet
append initrd=initrd.img repo=http://192.168.138.5/cdrom ks=http://192.168.138.5/ks.cfg

label check
menu label Test this ^media & install CentOS 7
menu default
kernel vmlinuz
append initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rd.live.check quiet

menu separator # insert an empty line

#utilities submenu
menu begin ^Troubleshooting
menu title Troubleshooting

label vesa
menu indent count 5
menu label Install CentOS 7 in ^basic graphics mode
text help
Try this option out if you're having trouble installing
CentOS 7.
endtext
kernel vmlinuz
append initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 xdriver=vesa nomodeset quiet

default cdrom
prompt 0

label rescue
menu indent count 5
menu label ^Rescue a CentOS system
text help
If the system will not boot, this lets you access files
and edit config files to try to get it booting again.
endtext
kernel vmlinuz
append initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rescue quiet

label memtest
menu label Run a ^memory test
text help
If your system is having issues, a problem with your
system's memory may be the cause. Use this utility to
see if the memory is working correctly.
endtext
kernel memtest

label cdrom
kernel vmlinuz
append initrd=initrd.img ks=http://192.168.138.5/ks.cfg devfs=nomount

menu separator # insert an empty line

label local
menu label Boot from ^local drive
localboot 0xffff

menu separator # insert an empty line
menu separator # insert an empty line

label returntomain
menu label Return to ^main menu
menu exit

menu end

重啟httpd服務(wù)

cp /var/www/html/cdrom/isolinux/vesamenu.c32 /var/lib/tftpboot/

4、安裝dhcp服務(wù)

yum –y install dhcp

cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf

修改dhcpd.conf

next-server 192.168.138.5; ------------------本機(jī)地址，作為ks服務(wù)器的地址
filename “pxelinux.0”;

subnet 192.168.138.0 netmask 255.255.255.0 {

range 192.168.138.10 192.168.138.50; -----------分配的地址池
option routers 192.168.138.5;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.138.5;
default-lease-time 86400;
max-lease-time 86400;
}

配置好后啟動(dòng)dhcp

service dhcpd start

三、安裝kickstart自動(dòng)安裝工具

Yum直接安裝

yum -y install system-config-kickstart

在桌面環(huán)境下啟動(dòng)Kickstart

system-config-kickstart

分區(qū)自己看情況分配，usr目錄盡量分配4G以上

安裝包選擇桌面版可安裝圖形版，自行選擇。如果該步驟報(bào)錯(cuò)，看yum配置

下面兩項(xiàng)默認(rèn)即可
配置好后file–>save

保存到該目錄下，查看ks.cfg文件

#platform=x86, AMD64, or Intel EM64T
#version=DEVEL
#Install OS instead of upgrade
install
#Keyboard layouts
keyboard ‘us'
#Root password
rootpw --iscrypted 11PObWbosO$B09PFFThWxWujr.TANYuJ.
#Use network installation
url --url=“ http://192.168.138.5/cdrom”
#System language
lang en_US
#System authorization information
auth --useshadow --passalgo=sha512
#Use graphical install
graphical
firstboot --disable
#SELinux configuration
selinux --disabled

#Firewall configuration
firewall --disabled
#Network information
network --bootproto=dhcp --device=ens33
#Reboot after installation
reboot
#System timezone
timezone Asia/Shanghai
#System bootloader configuration
bootloader --location=mbr
#Clear the Master Boot Record
zerombr
#Partition clearing information
clearpart --all --initlabel
#Disk partitioning information
part / --fstype=“xfs” --size=10240
part /boot --fstype=“xfs” --size=2048
part /home --fstype=“xfs” --size=1024
part /var --fstype=“xfs” --size=2048
part /tmp --fstype=“xfs” --size=2048
part /usr --fstype=“xfs” --size=4096
part /opt --fstype=“xfs” --size=4096
part swap --fstype=“swap” --size=4096

%packages
@desktop-debugging
@fonts
@gnome-desktop
@kde-desktop
@legacy-x
@x11
xterm

%end

四、在客戶(hù)主機(jī)上測(cè)試

新建一個(gè)虛擬機(jī)，進(jìn)pxe選擇從網(wǎng)絡(luò)加載dhcp，然后就直接自動(dòng)安裝即可

在 /var/lib/dhcpd/dhcpd.leases里可以看見(jiàn)新增機(jī)器分配的ip地址等信息

五、相關(guān)服務(wù)

systemctl start httpd
systemctl enable httpd
systemctl start dhcpd
systemctl enable dhcpd
systemctl start xinetd

自己親測(cè)可行，有問(wèn)題歡迎咨詢(xún)探討！

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