1.安装相关软件
yum -y install tftp-server httpd dhcp syslinux
2.配置DHCP
cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf
egrep -v "^#|^$" /etc/dhcp/dhcpd.conf
option domain-name "contoso.com";
option domain-name-servers ns1.contoso.com, contoso.com;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet 192.168.10.0 netmask 255.255.255.0 { //服务端IP网段及掩码
option routers 192.168.10.254; //网关
option subnet-mask 255.255.255.0; //掩码
option domain-name-servers 192.168.10.2;
range dynamic-bootp 192.168.10.100 192.168.10.120; //dhcp分发的地址范围
default-lease-time 21600; //设置默认的IP租用期限
max-lease-time 43200; //设置最大的IP租用期限
next-server 192.168.10.7; //TFTP服务器地址
filename "pxelinux.0"; //指定引导文件位置,这里是TFTP根目录下的pxelinux.0
}
测试部署,DHCP由路由提供,需配置 Next server 、Boot File Name pxelinux.0
- 启动DHCP服务
systemctl start dhcpd.service
3.配值tftp-server (基本不用修改配置文件)
- 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
disable = yes
per_source = 11
cps = 100 2
flags = IPv4
}
- cat /usr/lib/systemd/system/tftp.service
[Unit]
Description=Tftp Server
Requires=tftp.socket
Documentation=man:in.tftpd
[Service]
ExecStart=/usr/sbin/in.tftpd -s /var/lib/tftpboot
StandardInput=socket
[Install]
Also=tftp.socket
-
启动tftp-server服务
systemctl start tftp.socket
-
设定PXE相关的文件:
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/
cp /usr/share/syslinux/{chain.c32,mboot.c32,menu.c32,memdisk} /var/lib/tftpboot/
cp /media/cdrom/images/pxeboot/{vmlinuz,initrd.img} /var/lib/tftpboot/
#基于pxe安装使用的光盘上的文件(自己本地挂载光盘即可)或者是yum仓库里
mkdir /var/lib/tftpboot/pxelinux.cfg/
-
vim default #default的文件内容如下
default menu.c32 #加载时显示的默认菜单控制的程序(配置无法启动,menu.c32 改成Linux)
prompt 5 #显示提示符时间
timeout 30 #超时时长
MENU TITLE CentOS 7 PXE Menu #标题为CentOS7 PXE Menu
LABEL linux #指明下面菜单项的label
MENU LABEL Install CentOS 7 x86_64 #菜单的label
KERNEL vmlinuz #指明kernel文件
APPEND initrd=initrd.img inst.repo=http://192.168.121.17/centos7 ks=http://192.168.121.17/centos7.cfg #附加给kernel的参数,inst.repo可以是教室的ftp服务器,或者把光盘当做yum仓库,把它作为一个网站的访问就可以了
4.挂载ISO文件
mkdir -pv /media/cdrom
mount -r /dev/cdrom /media/cdrom
mkdir -pv /var/www/html/centos7/
mount --bind /media/cdrom /var/www/html/centos7
5. 配置kickstart文件:
- 该kickstart文件是CentOS7 最小化安装的一部分+system-config-kickstart 命令创建的kickstart文件(强烈建议在desktop centos7 上面操作system-config-kickstart命令)的合集
#platform=x86, AMD64, 或 Intel EM64T
#version=DEVEL
# Install OS instead of upgrade
install
# Keyboard layouts
keyboard 'us'
# Root password
rootpw --iscrypted $1$kncWgT41$Z37pYAKljSaTTQ4EadDqE1
# Use network installation
url --url="http://10.2.1.10/centos7"
# System language
lang en_US
# System authorization information
auth --useshadow --passalgo=sha512
# Use text mode install
text
# SELinux configuration
selinux --disabled
# Do not configure the X Window System
skipx
# Firewall configuration
firewall --disabled
# Network information
network --bootproto=dhcp --device=ens33
network --hostname=localhost.pxe
# Reboot after installation
reboot
# System timezone
timezone Asia/Shanghai
# System bootloader configuration
bootloader --location=mbr
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
part /boot --fstype="xfs" --size=1024
part swap --fstype="swap" --size=4096
part / --fstype="xfs" --grow --size=1
%post
systemctl disable postfix.service
%end
%packages
@^minimal
@compat-libraries
@debugging
@development
bash-completion
dos2unix
lrzsz
nmap
sysstat
tree
vim
wget
%end