PXE automated installation server in CENTOS7

First modify the NIC configuration information as a DHCP server

[Email protected] ~]# cat/etc/sysconfig/network-scripts/ifcfg-ens192

Type=ethernet

Bootproto=static

Defroute=yes

Peerdns=yes

Peerroutes=yes

Ipv4_failure_fatal=no

ipaddr=15.1.1.1

netmask=255.255.255.0

name=ens192

device=ens192

Onboot=yes

Installing httpd tftp-server DHCP Syslinux xinetd

[[email protected] ~]# yum install httpd tftp-server DHCP syslinux xinetd–y

Modify the DHCP configuration file to make a broadcast server

[Email protected] ~]# vim/etc/dhcp/dhcpd.conf

Ddns-update-style Interim;

Ignore client-updates;

authoritative;

Allow booting;

Allow BOOTP;

Subnet 15.1.1.0 netmask 255.255.255.0 #指定网段

{option routers 15.1.1.1; #指定网关

Option Subnet-mask 255.255.255.0;

Range DYNAMIC-BOOTP 15.1.1.2 15.1.1.200; #分配地址池

Next-server 15.1.1.1; #DHCP服务器地址

FileName "pxelinux.0"; #PXE所需文件

Default-lease-time 21000;

Max-lease-time 43200;

Option time-offset-18000;

}

Modify the TFTP configuration to change the Disable option from Yes to No

[Email protected] ~]# vim/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 = no

Per_source = 11

CPS = 100 2

Flags = IPV4

}

Copy and install all required CFG files

[Email protected] ~]# cp/root/anaconda-ks.cfg/var/www/html/ks.cfg

[Email protected] ~]# chmod 555/var/www/html/ks.cfg

Modifying a CFG file

[Email protected] ~]# vim/var/www/html/ks.cfg

#version =RHEL7

# Install OS instead of upgrade

Install

# System Authorization Information

Auth--enableshadow--passalgo=sha512

# Use CDROM installation media

URL--url "Http://15.1.1.1/centos" #安装源修改为网络路径

# Use graphical Install

Graphical

# Run The Setup Agent on first boot

Firstboot--enable

Ignoredisk--ONLY-USE=SDA

# Keyboard Layouts

Keyboard--vckeymap=us--xlayouts= ' US '

Reboot

# System Language

Lang en_US. UTF-8

# Firewall Configuration

Firewall--disabled

# SELinux Configuration

SELinux--disabled

# Network Information

Network--bootproto=dhcp--device=ens160--onboot=off--ipv6=auto

Network--hostname=localhost.localdomain

# Root Password

ROOTPW--iscrypted $6$athuq/r7eacq4m4t$ j17qu0sg1dwo2vyoyomattyqslrjpd.pw0mrj92.oxwb9ujyafx.cp9sjqwyazebpd1kn4lq8csygwzrzw610/

# System TimeZone

TimeZone Asia/shanghai--ISUTC--NONTP

# System Bootloader Configuration

Bootloader--append= "Crashkernel=auto"--location=mbr--BOOT-DRIVE=SDA

Autopart--TYPE=LVM

# Partition Clearing Information

Clearpart--none--initlabel

%packages

@core

Kexec-tools

%end

%addon com_redhat_kdump--enable--reserve-mb= ' auto '

%end

Creating the installation source and installation files

[Email protected] ~]# Mkdir/var/www/html/centos

[Email protected] ~]# Mkdir/var/www/html/centos

[Email protected] ~]# mount/dev/cdrom/mnt/

[Email protected] ~]# cp-r/mnt/*/var/www/html/centos/

[email protected] ~]# Yum install Tree–y

[Email protected] ~]# cp/usr/share/syslinux/pxelinux.0/var/lib/tftpboot/

[Email protected] ~]# mkdir/var/lib/tftpboot/pxelinux.cfg

[Email protected] ~]# Cp/var/www/html/centos/isolinux/isolinux.cfg/var/lib/tftpboot/pxelinux.cfg/default

[Email protected] ~]# cp/var/www/html/centos/images/pxeboot/{vmlinuz,initrd.img}/var/lib/tftpboot/

[Email protected] ~]# Cp/var/www/html/centos/isolinux/{vesamenu.c32,boot.msg,splash.png}/var/lib/tftpboot/

[Email protected] ~]# Tree-al 2/var/www/html/

/var/www/html/

├──centos

│├──centos_buildtag

│├──efi

│├──eula

│├──gpl

│├──images

│├──isolinux

│├──liveos

│├──packages

│├──repodata

│├──rpm-gpg-key-centos-7

│├──rpm-gpg-key-centos-testing-7

│└──trans. TBL

└──ks.cfg

7 Directories, 7 files

Modify the default file

[Email protected] ~]# Vim/var/lib/tftpboot/pxelinux.cfg/default

Default Vesamenu.c32

Timeout 60

Display Boot.msg

# Clear The screen when exiting the menu, instead of leaving the menu displayed.

# for Vesamenu, this means the graphical background is still displayed without

# The menu itself for as long as the remains in graphics mode.

Menu Clear

Menu Background Splash.png

Menu Title CentOS 7

Menu Vshift 8

Menu Rows 18

Menu Margin 8

#menu Hidden

Menu Helpmsgrow 15

Menu Tabmsgrow 13

# Border Area

Menu Color Border * #00000000 #00000000 None

# Selected Item

Menu Color sel 0 #ffffffff #00000000 None

# Title Bar

Menu Color title 0 #ff7ba3d0 #00000000 None

# Press [TAB] Message

Menu Color tabmsg 0 #ff3a6496 #00000000 None

# unselected menu item

Menu Color Unsel 0 #84b8ffff #00000000 None

# Selected Hotkey

Menu Color Hotsel 0 #84b8ffff #00000000 None

# unselected Hotkey

Menu Color Hotkey 0 #ffffffff #00000000 None

# Help Text

Menu Color Help 0 #ffffffff #00000000 None

# A ScrollBar of some type? Not sure.

Menu Color scrollbar 0 #ffffffff #ff355594 None

# Timeout MSG

Menu Color Timeout 0 #ffffffff #00000000 None

Menu Color timeout_msg 0 #ffffffff #00000000 None

# Command Prompt Text

Menu Color Cmdmark 0 #84b8ffff #00000000 None

Menu Color CmdLine 0 #ffffffff #00000000 None

# do not display the actual menu unless the user presses a key. All this is displayed a timeout message.

Menu Tabmsg Press Tab for full configuration options on menu items.

Menu Separator # Insert an empty line

Menu Separator # Insert an empty line

Label Linux

Menu Label ^install CentOS 7

Kernel Vmlinuz

Menu default

#append initrd=initrd.img inst.stage2=hd:label=centos\x207\x20x86_64 Quiet

Append initrd=initrd.img inst.ks=http://15.1.1.1/ks.cfg quiet

Label check

Menu Label Test this ^media & install CentOS 7

Menu default

Kernel Vmlinuz

#append initrd=initrd.img inst.stage2=hd:label=centos\x207\x20x86_64 Rd.live.check quiet

Append initrd=initrd.img inst.ks=http://15.1.1.1/ks.cfg quiet

Menu Separator # Insert an empty line

# Utilities Submenu

Menu Begin ^troubleshooting

Menu Title Troubleshooting

Label VESA

Menu Indent Count 5

Menu Label Install CentOS 7 in ^basic graphics mode

Text Help

Try This option out if you're having trouble installing

CentOS 7.

Endtext

Kernel Vmlinuz

Append initrd=initrd.img inst.stage2=hd:label=centos\x207\x20x86_64 xdriver=vesa nomodeset quiet

Label Rescue

Menu Indent Count 5

Menu Label ^rescue a CentOS system

Text Help

If the system won't boot, this lets you access files

and edit config files to try to get it booting again.

Endtext

Kernel Vmlinuz

Append initrd=initrd.img inst.stage2=hd:label=centos\x207\x20x86_64 Rescue quiet

Label Memtest

Menu Label Run a ^memory test

Text Help

If your system is has issues, a problem with your

System ' s memory May is the cause. Use this utility to

See if the memory is working correctly.

Endtext

Kernel memtest

Menu Separator # Insert an empty line

Label Local

Menu label Boot from ^local Drive

Localboot 0xFFFF

Menu Separator # Insert an empty line

Menu Separator # Insert an empty line

Label Returntomain

Menu Label Return to ^main menu

Menu exit

Menu End

[Email protected] ~]# tree/var/lib/tftpboot/

/var/lib/tftpboot/

├──boot.msg

├──initrd.img

├──pxelinux.0

├──pxelinux.cfg

│└──default

├──splash.png

├──vesamenu.c32

└──vmlinuz

1 directory, 7 files

Turn on the service and check the service opening situation

[[email protected] ~]# systemctl start httpd dhcpd tftp xinetd

[[email protected] ~]# systemctl enable httpd dhcpd tftp xinetd

Created symlink From/etc/systemd/system/multi-user.target.wants/httpd.service to/usr/lib/systemd/system/ Httpd.service.

Created symlink From/etc/systemd/system/multi-user.target.wants/dhcpd.service to/usr/lib/systemd/system/ Dhcpd.service.

Created symlink from/etc/systemd/system/sockets.target.wants/tftp.socket To/usr/lib/systemd/system/tftp.socket.

[Email protected] ~]# NETSTAT-TUPLN

Active Internet connections (only servers)

Proto recv-q send-q Local address Foreign address State Pid/program Name

TCP 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 2385/dnsmasq

TCP 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1079/sshd

TCP 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1077/cupsd

TCP 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1758/master

TCP6 0 0::: $:::* LISTEN 5884/httpd

TCP6 0 0::: $:::* LISTEN 1079/sshd

TCP6 0 0:: 1:631:::* LISTEN 1077/CUPSD

TCP6 0 0:: 1:25:::* LISTEN 1758/master

UDP 0 0 0.0.0.0:43741 0.0.0.0:* 5890/DHCPD

UDP 0 0 192.168.122.1:53 0.0.0.0:* 2385/dnsmasq

UDP 0 0 0.0.0.0:67 0.0.0.0:* 5890/DHCPD

UDP 0 0 0.0.0.0:67 0.0.0.0:* 2385/dnsmasq

UDP 0 0 0.0.0.0:69 0.0.0.0:* 5897/xinetd

UDP 0 0 0.0.0.0:123 0.0.0.0:* 6105/ntpdate

UDP 0 0 127.0.0.1:323 0.0.0.0:* 742/chronyd

UDP 0 0 0.0.0.0:5353 0.0.0.0:* 779/avahi-daemon:r

UDP 0 0 0.0.0.0:1282 0.0.0.0:* 779/avahi-daemon:r

UDP6 0 0::: 55402:::* 5890/DHCPD

UDP6 0 0::: more:::* 1/systemd

UDP6 0 0::: 123:::* 6105/ntpdate

UDP6 0 0:: 1:323:::* 742/chronyd

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PXE automated installation server in CENTOS7