1 安装并配置dhcpd服务
yum install dhcp
[root@localhost pub]# vim /etc/dhcp/dhcpd.conf
subnet 172.16.1.0 netmask 255.255.255.0 {
range 172.16.1.2 172.16.1.253;
option routers 172.16.1.254;
option subnet-mask 255.255.255.0;
option broadcast-address 172.16.1.255;
default-lease-time 600;
next-server 172.16.1.1;
max-lease-time 7200;
filename "/pxelinux.0";
}
systemctl start dhcpd
systemctl enable dhcpd
2 安装并配置vsftpd服务
本次pxe安装源使用的是vsftp作为安装树
yum install vsftpd
systemctl start vsftpd
systemctl enable vsftpd
这里vsftpd使用的都是默认配置
3 之后把整个iso都拷贝到ftp的目录
[root@localhost pub]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot
└─sda2 8:2 0 19.8G 0 part
├─server-root 253:0 0 18.8G 0 lvm /
└─server-swap 253:1 0 1G 0 lvm [SWAP]
sr0 11:0 1 3.8G 0 rom /run/media/root/RHEL-7.2 Server.x86_64
或者使用findmnt来找到光盘挂在在了哪里，或者使用df -h也可以看到
cp -axv /run/media/root/RHEL-7.2 Server.x86_64 /var/ftp/pub
4 安装并配置tftp服务
yum install tftp-server
[root@localhost ~]# vim /etc/xinetd.d/tftp
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
}
systemctl start tftp
systemctl enable tftp
5 将必要文件及配置放到/var/lib/tftpboot
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/
cp -axv /var/ftp/pub/isolinux/* /var/lib/tftpboot/
mkdir /var/lib/tftpboot/pxelinux.cfg
cp /var/ftp/pub/isolinux/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default
查看default文件的配置==将default文件设置为下边这样
[root@localhost pxelinux.cfg]# vim /var/lib/tftpboot/pxelinux.cfg/default
default linux
timeout 500
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 screen remains in graphics mode.
menu clear
menu background splash.png
menu title Red Hat Enterprise Linux 7.2
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 that is displayed is 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 Red Hat Enterprise Linux 7.2
kernel vmlinuz
#append initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7.2\x20Server.x86_64 quiet
append initrd=initrd.img inst.repo=ftp://172.16.1.1/pub inst.ks=ftp://172.16.1.1/pub/ks.cfg ==这里指定安装源为172.16.1.1/pub，ks文件位于172.16.1.1/pub/ks.cfg这里
label check
menu label Test this ^media & install Red Hat Enterprise Linux 7.2
menu default
kernel vmlinuz
append initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7.2\x20Server.x86_64 rd.live.check quiet
menu separator # insert an empty line
# utilities submenu
menu begin ^Troubleshooting
menu title Troubleshooting
label vesa
menu indent count 5
menu label Install Red Hat Enterprise Linux 7.2 in ^basic graphics mode
text help
Try this option out if you're having trouble installing
Red Hat Enterprise Linux 7.2.
endtext
kernel vmlinuz
append initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7.2\x20Server.x86_64 xdriver=vesa nomodeset quiet
label rescue
menu indent count 5
menu label ^Rescue a Red Hat Enterprise Linux system
text help
If the system will not 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=RHEL-7.2\x20Server.x86_64 rescue quiet
label memtest
menu label Run a ^memory test
text help
If your system is having issues, a problem with your
system's memory may be 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
[root@localhost pxelinux.cfg]#
6 ks.cfg文件的配置
[root@localhost pub]# vim /var/ftp/pub/ks.cfg
#version=DEVEL
# System authorization information
install
#nfs --server=10.0.97.20 --dir=/var/ftp/pub
url --url=ftp://172.16.1.1/pub
reboot ==注意这个reboot位置不能写在下边，否则会在安装到分区的时候自动重启
autostep --autoscreenshot ===添加这行以后，在客户端安装完毕OS后，会在家目录中有所有步骤的截图
eula --agreed
auth --enableshadow --passalgo=sha512
#repo --name="Server-HighAvailability" --baseurl=file:///run/install/repo/addons/HighAvailability
#repo --name="Server-ResilientStorage" --baseurl=file:///run/install/repo/addons/ResilientStorage
repo --name=ChinaUnicom-Packages --baseurl=ftp://172.16.1.1/pub/
# Use CDROM installation media
#cdrom
# Use graphical install
graphical
# Run the Setup Agent on first boot
firstboot --disable ==默认这里是firstboot --enable，如果为enable的话，在你安装完成后会要求你同意license，或者输入c，表示continue
#ignoredisk --only-use=sda
# Keyboard layouts
keyboard --vckeymap=us --xlayouts='us'
# System language
lang en_US.UTF-8
# Network information
network --bootproto=dhcp --device=eno16777736 --onboot=yes --ipv6=auto
#network --hostname=server1
firewall --disabled
selinux --disabled
#reboot
# Root password
rootpw --iscrypted $6$3RrnaeWFTcpVgyhb$m02byJ/yLrDvGJdcgGGLf4ybYeyPiTKH3fnS6limNYn***RYK1/MWpY4Ulc7a1hGpUQz1rX5Z9gv5/iHPCMyV0
# System services
services --disabled="chronyd"
# System timezone
timezone Asia/Shanghai --isUtc --nontp
user --name=shichunda --password=$6$Ola.H6Ll3V7UeGSM$ybgxTg9VtrPEsFazm2kb1NzZsSSyl40MIflyfM8CTPUCnAlyGbbQTr3/y1aNIFY4grdKTF1UrGiRgLR5c0afG/ --iscrypted --gecos="shichunda"
# X Window System configuration information
xconfig --startxonboot
# System bootloader configuration
bootloader --append=" crashkernel=auto" --location=mbr --boot-drive=sda
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
part /boot --fstype="xfs" --ondisk=sda --size=300
part pv.12 --grow --fstype="lvmpv" --ondisk=sda --size=300
volgroup server --pesize=32768 pv.12
logvol / --fstype="xfs" --size=10240 --name=root --vgname=server
logvol swap --fstype="swap" --size=1024 --name=swap --vgname=server
%packages
@^graphical-server-environment
@base
@core
@fonts
@gnome-desktop
@guest-agents
@guest-desktop-agents
@input-methods
@internet-browser
@print-client
@x11
kexec-tools
%end
%addon com_redhat_kdump --enable --reserve-mb='auto'
%end
%post --log=/root/ks-post.log
# Configure YUM repository
KSIP=172.16.1.1
PUB=ftp://$KSIP/pub
BASE=$PUB
K×××C=http://$KSIP/
RELEASE=rhel6
# Configure the utility/ks machine repo for ChinaUnicom:
# Leave gpgcheck=0 for ChinaUnicom-updates since it may contain unreleased, but required errata.
rpm --import file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta
rpm --import file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
cat >> /etc/yum.repos.d/ChinaUnicom.repo << ABC
[ChinaUnicom-Packages]
name=ChinaUnicom-Packages
baseurl=$BASE/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta,file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
ABC
%end
注意：
1 在pxe安装客户端系统之前，最好先使用光盘或usb来安装一套rhel7，之后使用该物理机作为pxe安装源，这样有2个好处：1 能得到一个针对这批服务器端ks文件；2 能得到这批服务器的网卡名，这样你在这个ks中就可以在network部分写上这个网卡名了。默认情况下rhel7针对不同的服务器，网卡叫不同的名字
7 客户端安装系统
在客户端加电，使用网络引导，客户端会自动安装OS