Centos8基于PXE自动安装操作系统

PXE服务器配置

安装相关软件

dnf install -y httpd tftp-server dhcp-server syslinux-nonlinux

配置 dhcp

vim /etc/dhcp/dhcpd.conf
subnet 192.168.43.0 netmask 255.255.255.0 {
range 192.168.43.100 192.168.43.200;
option routers 192.168.43.2;
option domain-name "xuepeng.com";
option domain-name-servers 180.76.76.76, 114.114.114.114;
next-server 192.168.43.8;
filename "pxelinux.0";
}

立即启动，开机自启动服务

systemctl enable --now tftp dhcpd httpd

准备相关目录挂载光盘

提前添加三张光驱，分别放入centos6,7,8的光盘

mkdir -p /var/www/html/Centos/{6,7,8}/os/x86_64
mount /dev/sr0 /var/www/html/Centos/8/os/x86_64/
mount /dev/sr1 /var/www/html/Centos/6/os/x86_64/
mount /dev/sr2 /var/www/html/Centos/7/os/x86_64/

将ks文件移动到 /var/www/html/ksdir

Centos6，7，8 ks.cfg

mkdir /var/www/html/ksdir
mv ks{6,7,8}.cfg /var/www/html/ksdir

准备启动相关文件放到 /var/lib/tftpboot 目录下

1. initre.img , vmlinuz 来自光盘
2. menu.c32， pxelinux.0 来自 syslinux-nonlinux 软件包
3. ldlinux.c32 ， libcom32.c32，libutil.c32 来自 centos8的光盘
4. pxelinux.cfg 自己创建的目录
   

/var/lib/tftpboot/pxelinux.cfg/default文件内容

default menu.c32
timeout 600
menu title PXE Auto Install Centos


label mini 6
  menu label ^Install CentOS Mini ^6
  kernel Centos6/vmlinuz
  append initrd=Centos6/initrd.img ks=http://192.168.43.8/ksdir/ks6.cfg


label mini 7
  menu label ^Install CentOS Mini ^7
  kernel Centos7/vmlinuz
  append initrd=Centos7/initrd.img ks=http://192.168.43.8/ksdir/ks7.cfg

label mini 8
  menu label ^Install CentOS Mini ^8
  kernel Centos8/vmlinuz
  append initrd=Centos8/initrd.img ks=http://192.168.43.8/ksdir/ks8.cfg


label manual
  menu label ^Manual Install Centos Linux 8
  kernel Centos8/vmlinuz
  append initrd=Centos8/initrd.img inst.repo=http://192.168.43.8/Centos/8/os/x86_64

label rescue
  menu label ^Rescue a CentOS Linux system 8
  kernel Centos8/vmlinuz
  append initrd=Centos8/initrd.img ks=http://192.168.43.8/ksdir/ks8.cfg rescue quiet

label rescue
  menu label ^Rescue a CentOS Linux system 7
  kernel Centos7/vmlinuz
  append initrd=Centos7/initrd.img ks=http://192.168.43.8/ksdir/ks7.cfg rescue quiet


label rescue
  menu label ^Rescue a CentOS Linux system 6
  kernel Centos6/vmlinuz
  append initrd=Centos6/initrd.img ks=http://192.168.43.8/ksdir/ks6.cfg rescue quiet

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

pxe客户端配置

新开一台虚拟机从网卡启动


系统自动安装软件包

进入系统