How to automatically install the operating system on Centos8 based on PXE

The following tutorial column will introduce to you the automatic installation operation of Centos8 based on PXE System, I hope it will be helpful to friends in need! PXE server configurationInstall related software

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

Configure 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";
}

Start immediately, start the service automatically after booting

systemctl enable --now tftp dhcpd httpd

Prepare related Directory mounting CD

Add three CD-ROMs in advance and put the centos6, 7, and 8 CDs respectively

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/

Move the ks file to /var/www/html/ksdir

Centos6, 7, 8 ks.cfg

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

Prepare to start the related files in the /var/lib/tftpboot directory

initre.img, vmlinuz from the CD

menu.c32, pxelinux.0 from syslinux-nonlinux package

1. ldlinux.c32, libcom32.c32, libutil.c32 from centos8 CD
2. pxelinux.cfg Directory created by yourself
4. 
   /var/lib/tftpboot/pxelinux.cfg/default file content

   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 client configuration

Open a new one The virtual machine starts from the network card

The system automatically installs the software package
Enters the system

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