PXE network installation

Catalog

Environmental preparation

Install enable DHCP And configure the file

Configure network card  

Boot file vmlinuz and initrd.img

Boot file pxelinux.0

Configure the Startup menu file

kickstart

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Environmental preparation

Install enable DHCP And configure the file

Check for installation dhcp, If it doesn't, it's directly yum install

yum install -y dhcp

  Copy

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

  Modify the configuration file

vim /etc/dhcp/dhcpd.conf

subnet 192.168.150.0 netmask 255.255.255.0 {         # To configure IP And subnet mask 
  range 192.168.150.100 192.168.150.200;             # Configure address pool 
  option domain-name-servers 114.114.114.114;        # Configure domain name resolution 
  option routers 192.168.150.1;                    # configure gateway 
  next-server 192.168.150.1;  
  filename "pxelinux.0"                              # Configure boot file 
}

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Configure network card  

After configuration, add a new network card

  At this point we ifconfig Check the , You will find an additional network card

  Then we make a copy ens33 To ens37 Inside , And enter ens37 Set in the network card

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To configure TFTP

yum -y install tftp-server
yum -y install xinetd 
vim /etc/xinetd.d/tftp

service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes   
 //wait no Indicates that multiple clients can be connected together ,yes Indicates that the client can only be connected to one by one , Indicates whether to enable multithreading to work together , Otherwise you need to wait 
        user                    = root
        server                    = /usr/sbin/in.tftpd
        server_args             = -s /var/lib/tftpboot   
                                // Appoint TFTP root directory （ The storage path of the boot file ） -c Allow upload 
        disable                 = no   // modify  disable no Open for indication TFTP service  
        per_source              = 11    
// By limiting the maximum number of connections to a host , So as to prevent a host from monopolizing a service , Every one here IP The number of connections to the address is 11 individual 
        cps                     = 100 2   
// Indicates that the server can start up at most 100 A connection , If this number is reached, new services will stop starting 2 second . No requests will be accepted during this period 
        flags                   = IPv4
}

systemctl  enable  tftp
systemctl  start   tftp

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Boot file vmlinuz and initrd.img

mount /dev/cdrom /mnt
cp /mnt/images/pxeboot/initrd.img vmlinuz  /var/lib/tftpboot/ 

systemctl start xinetd
systemctl enable  xinetd
systemctl start tftp
systemctl enable tftp 

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Boot file pxelinux.0

pxelinux.0 It's a binary , The main function is equivalent to the guidance of a system installation step , Guide the client how to install the system

yum provides */pxelinux.0 

  Find its location and copy it to /var/lib/tftpbooot/

rpm -ql syslinux | grep pxelinux.0
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/ 

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Configure the Startup menu file

Because the pxelinux.0 This document decides to /var/lib/tftpboot/pxelinux.cfg/default file , So all we have to do is /var/lib/tftpboot/ Manually create

mkdir /var/lib/tftpboot/pxelinux.cfg
vim /var/lib/tftpboot/pxelinux.cfg/default 

default auto // Specify the default entry name  , Corresponding to the following label auto
prompt 1     
// Set whether to wait for the user to choose ,1  Wait for user control ,0 Indicates that you do not wait for user control , During installation, there will be boot: If you press enter 
 Express choice auto Pattern 
 
 
label auto                   // Default graphics installation 
      kernel vmlinuz 
      append initrd=initrd.img method=ftp://192.168.150.30/centos7   
                             //method You must specify a network path 
 
label linux text             // Text installation mode , appear boot： Time input linux text
      kernel vmlinuz 
      append text initrd=initrd.img method=ftp://192.168.150.30/centos7 
 
label linux rescue           // Rescue mode , appear boot： Time input linux rescue
      kernel vmlinuz 
	  append rescue initrd=initrd.img method=ftp://192.168.150.30/centos7                                                                                             

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kickstart

install system-config-kickstart

yum install -y system-config-kickstart

open Kickstart Configurator window

  Save to /var/ftp/ Next , file name  ks.cfg

 It can be done to ks To optimize 
vi /var/lib/tftpboot/pxelinux.cfg/default 
default auto
prompt 1
 
label auto
        kernel vmlinuz
        append initrd=initrd.img method=ftp://192.168.150.30/centos7  ks=ftp://192.168.100.100/ks.cfg
 
label linux text
        kernel vmlinuz
        append text initrd=initrd.img method=ftp://192.168.150.30/centos7  ks=ftp://192.168.100.100/ks.cfg
 
label linux rescue
        kernel vmlinuz
        append rescue initrd=initrd.img method=ftp://192.168.150.30/centos7  ks=ftp://192.168.100.100/ks.cfg