PXE配置文档

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目前所做为测试，即在虚拟机上的测试。先简单介绍一下整体环境，两台centos7.2系统，7-2-a（安装vsftp tftp）和7-2-b（安装dhcp服务）

在7-2-a ip:192.168.199.149 的操作：

systemctl stop firewalld 
setenforce 0
yum install -y vsftpd tftp-server syslinux   
cp -a /misc/cd/*  /var/ftp
cp /root/anaconda-ks.cfg  /var/ftp/ks.cfg

//这里ks.cfg需要根据自己需求简单修改配置，后面会说明用system-config-kickstart 如何配置ks.cfg

内容修改如下

#platform=x86, AMD64, or Intel EM64T
#version=DEVEL
# Install OS instead of upgrade
install
# Keyboard layouts
keyboard 'us'
# Root password
rootpw --iscrypted $1$gfl.Vz5t$mqzEhPMYDiANGwDB8gj/E/
# System timezone
timezone Asia/Shanghai
user --name=superman --password=$6$cq8y5jAZQCGd4muD$8G7zz.fpZFK3rI0AA7dyAxeD2B3mIjgu1HY/yeOm.PdsYHAYsD77K8uXTjbEPvJs9z7M6s0TECr6FtL2Bc5to/ --iscrypted --gecos="superman"   #为服务器添加一个用户
# Use network installation
url --url="ftp://192.168.199.149"   
# System language
lang en_US
# Firewall configuration
firewall --disabled
# System authorization information
auth  --useshadow  --passalgo=sha512
# Use text mode install
text
firstboot --enable
# SELinux configuration
selinux --disabled

# Network information
network  --bootproto=dhcp --device=eno16777736 --ipv6=auto --activate
network  --hostname=7-2-test

# Reboot after installation
reboot
# System bootloader configuration
bootloader --location=mbr --boot-drive=sda
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
part / --fstype="xfs" --size=12040
part /boot --fstype="xfs" --size=10240
part /home --fstype="xfs" --size=10240
part /var --fstype="xfs" --size=20480
part /usr --fstype="xfs" --size=10240
part /tmp --fstype="xfs" --size=10240

%packages
@^minimal
@core
@ftp-server

%end

配置tftp-server

cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot
mkdir /var/lib/tftpboot/pxelinux.cfg
cp /misc/cd/isolinux/isolinux.cfg  /var/lib/tftpboot/pxelinux.cfg/default
cp /misc/cd/images/pxeboot/{vmlinuz,initrd.img}  /var/lib/tftpboot/
cp /misc/cd/isolinux/{vesamenu.c32,boot.msg,splash.png} /var/lib/tftpboot/
vim /var/lib/tftpboot/pxelinux.cfg/default

default中很多不需要修改，需要修改的部分如下

label linux
  menu label ^Install CentOS 7 minimal
  menu default   
  kernel vmlinuz
  append initrd=initrd.img inst.stage2=ftp://192.168.199.149/ inst.ks=ftp://192.168.199.149/ks.cfg

label可以有多个，但是只能有一个label是menu default

启动服务

systemctl start vsftpd
systemctl start tftp.socket 
systemctl start tftp.service  #如果是开启了守护进程，则需要启动xinetd
ss -tunlp   #通过端口简单查看服务是否启动

在7-2-b ip:192.168.199.158 的操作：

yum install -y dhcp
vim /etc/dhcp/dhcpd.conf
#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.example
#   see dhcpd.conf(5) man page
#
option domain-name-servers 192.168.199.1;

default-lease-time 60000;
max-lease-time 720000;

log-facility local7;

subnet 192.168.199.0 netmask 255.255.255.0 {
  range 192.168.199.230 192.168.199.249;
  option routers 192.168.199.1;
  next-server 192.168.199.149;#这里的ip就是tftpd所在ip
filename "pxelinux.0";
}

systemctl start dhcpd

kickstart 生成ks.cfg

yum install -y system-config-kickstart.noarch

system-config-kickstart  /var/ftp/ks.cfg    #这个代表在原有基础上进行修改
system-config-kickstart  #这个代表从头自己创建
运行之后按照如下配置即可