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

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Release： 2021-05-26 16:57:26

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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

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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";
}

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Start immediately, start the service automatically after booting

systemctl enable --now tftp dhcpd httpd

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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/

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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

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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

ldlinux.c32, libcom32.c32, libutil.c32 from centos8 CD
pxelinux.cfg Directory created by yourself

/var/lib/tftpboot/pxelinux.cfg/default file content /var/lib/tftpboot/├── Centos6│ ├── initrd.img│ └── vmlinuz├── Centos7│ ├── initrd.img│ └── vmlinuz├── Centos8│ ├── initrd.img│ └── vmlinuz├── ldlinux.c32├── libcom32.c32├── libutil.c32├── menu.c32├── pxelinux.0└── pxelinux.cfg└── default

/var/lib/tftpboot/├── Centos6│ ├── initrd.img│ └── vmlinuz├── Centos7│ ├── initrd.img│ └── vmlinuz├── Centos8│ ├── initrd.img│ └── vmlinuz├── ldlinux.c32├── libcom32.c32├── libutil.c32├── menu.c32├── pxelinux.0└── pxelinux.cfg└── default

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

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pxe client configuration

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

The system automatically installs the software package How to automatically install the operating system on Centos8 based on PXE
Enters the system

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