centos7 tftp+http+dhcp+kickstart自动安装系统

安装所需软件

yum install -y tftp-server syslinux dhcp httpd system-config-kickstart

 

安装完将pxe引导文件复制到tftp上，在httpd主页下创建一个文件夹

cp /usr/share/syslinux/pxelinux.0  /var/lib/tftpboot/

mkdir -p /var/www/html/centos7

#把centos镜像isolinux目录下的所有文件都复制到tftp服务器上（centos7镜像文件事先解压放到了/var/www/html/centos7目录下）

cp -a /var/www/html/centos7/isolinux/* /var/lib/tftpboot/

#启动tftp
systemctl start tftpd

#启动httpd
systemctl start httpd

 

写入ks文件

vim /var/www/html/centos7/ks_config/centos7-ks.cfg  或者使用  system-config-kickstart命令生成文件

#platform=x86, AMD64, 或 Intel EM64T
#version=DEVEL
# Install OS instead of upgrade
install
# Keyboard layouts
keyboard 'us'
# Root password
rootpw --iscrypted $1$KdnW5OJh$g75gHTLYXgIWoZlXdKxkP1
# System language
lang en_US
# System authorization information
auth --useshadow --passalgo=sha512
# Use graphical install
graphical
# SELinux configuration
selinux --disabled
# Do not configure the X Window System
skipx

# Firewall configuration
firewall --disabled
# Reboot after installation
reboot
# System timezone
timezone Asia/Shanghai
# Use network installation
url --url="http://192.168.10.89/centos7/"
# System bootloader configuration
bootloader --location=none
# Clear the Master Boot Record
zerombr

#network --bootproto=static --device=ens192 --gateway=172.16.80.1 --ip=172.16.80.2 --nameserver=114.114.114.114 --netmask=255.255.255.0 --activate

network --bootproto=dhcp --device=ens192
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information

part /boot --fstype="xfs" --size=200
part swap --fstype="swap" --size=2048
part / --fstype="xfs" --size=92160

%packages
vim
%end

 

#创建一个文件夹，在里面写入默认安装的选项
mkdir -p /var/lib/tftpboot/pxelinux.cfg
cp /var/www/html/CentOS7/isolinux/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default

vim /var/lib/tftpboot/pxelinux.cfg/default
#修改成ks.cfg

default ks
prompt 0

label ks
  kernel vmlinuz
  append initrd=initrd.img ks=http://192.168.10.229/centos7/centos7-ks.cfg 

label linux
  menu label ^Install CentOS 7
  kernel vmlinuz
 #append initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 quiet
  append initrd=initrd.img method=http://192.168.10.229/centos7

 

tftp配置文件

service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -s /var/lib/tftpboot  #tftp的文件存放路径
        disable                 = no
        per_source              = 11
        cps                     = 100 2
        flags                   = IPv4
}

 

DHCP配置文件

#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.example
#   see dhcpd.conf(5) man page
#
#
#
ddns-update-style none; #设置DHCP服务器模式
ignore client-updates; #禁止客户端更新
subnet 192.168.10.0 netmask 255.255.255.0 { #ip声明最后一位必须是0，网段需要和当前dhcp服务器做广播的网卡一个网段
range 192.168.10.235 192.168.10.240; #dhcp地址段
option routers 192.168.10.1;  #设置网关
option broadcast-address 192.168.10.254; #广播地址
default-lease-time 21600; #默认租约时间
max-lease-time 43200; #最大租约时间
next-server 192.168.10.229;  #tftp服务器地址
filename "/pxelinux.0";  #tftp上的pxe引导文件
}

 

然后将那张网卡设置广播，以让内网的机器获取到ip地址

route add -host 255.255.255.255 dev 网卡名

#启动dhcp
systemctl start dhcpd