目录

一、进入脚本界面

二、必要手动设置

 三、设置网卡，关闭防火墙

 四、下载相关服务并挂载系统光盘

五、进行服务配置

六、将装机文件移动到tftp文件夹

七、使用case让用户选择使用函数方法

---

一、进入脚本界面

 脚本界面代码：

#!/bin/bash
echo "-----------------------------------------------"
echo -e "欢迎使用pxe网络装机基础搭建脚本!\n作者：吕佳朋\n1.关闭防火墙,创建网卡ens36\n2.下载必要软件包并挂载系统光盘\n3.配置dhcp、tftp\n4.将装机必要文件移动到/var/lib/tftpboot\n5.exit"         
echo "-----------------------------------------------"
read -p "please enter your choice:" i

二、必要手动设置

为虚拟机pxe服务端增加网卡设备，设置自定义仅主机模式（VMnet1）

这张网卡是作为dhcp服务器和ftp服务器为装机来分配ip并安装系统相关文件的，所有不需要设置网关地址和DNS，具体配置见下文。

 三、设置网卡，关闭防火墙

firewalldset(){
read -p "请输入你的ens33网卡ip：" net1
read -p "请输入你作为dhcp服务端的网卡ip：" net
echo "=================================关闭系统防护=================================="
systemctl stop firewalld
setecforce 0
systemctl status firewalld
echo `#grep SELINNUX=disabled /etc/sysconfig/selinux`
grep SELINUX=disabled /etc/sysconfig/selinux
echo `#getenforce`
echo "==============================================================================="
echo "防火墙以及防护已关闭！"
echo "==============================================================================="
cp -p /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-ens36
sed -i '/UUID/d' /etc/sysconfig/network-scripts/ifcfg-ens36
#删除ens33网卡的UUID，否则会报错
 
sed -i 's/ens33/ens36/' /etc/sysconfig/network-scripts/ifcfg-ens36
#将ens33替换成ens36
 
sed -i s/$net1/$net/ /etc/sysconfig/network-scripts/ifcfg-ens36
#将ens33网卡地址进行替换
 
sed -i '/DNS/d' /etc/sysconfig/network-scripts/ifcfg-ens36
#将DNS行删除
 
sed -i '/GATEWAY/d' /etc/sysconfig/network-scripts/ifcfg-ens36
#将网关行删除
 
sed -i 's/dhcp\|none/static/' /etc/sysconfig/network-scripts/ifcfg-ens36
#将含有“dhcp”或“none”替换成static
 
ifdown ens36 && ifup ens36
ping -c 1 baidu.com > /dev/null
if  [ $? -eq 0 ];then
echo "网络连接正常，设置完成！"
elif [ $? -ne 0 ];then
echo "网络设置出现错误，请检查"
fi
}

please enter your choice:1
请输入你的ens33网卡地址：192.168.116.22
请输入你作为dhcp服务端的网卡ip：192.168.100.100
 

检验:

 四、下载相关服务并挂载系统光盘

yum下dhcp、tftp-server、syslinux、xinetd、system-config-kickstart、vsftpd

挂载系统光盘到/mnt下

install(){
echo "================================开始软件包安装================================"
yum install -y dhcp
yum install -y tftp-server
yum install -y syslinux
yum install -y xinetd
yum install -y system-config-kickstart
yum install -y vsftpd
echo "===============================开始系统光盘挂载==============================="
mount /dev/sr0 /mnt
echo "=============================================================================="
echo "必要软件包安装成功，系统光盘已挂载"
mount | grep /dev/sr0
echo "=============================================================================="
}

五、进行服务配置

复制一份dhcp.conf.example到/etc/dhcp/dhcpd.conf，并写入：

subnet 192.168.100.0 netmask 255.255.255.0 {
       range 192.168.100.40 192.168.100.50;
       option routers 192.168.100.100;
       option domain-name-servers 114.114.114.114;
       next-server 192.168.100.100;
      filename \"pexlinux.0\";

其他的具体配置可以看之前的配置pxe装机的博客 ：https://blog.csdn.net/m0_71518373/article/details/125923938?spm=1001.2014.3001.5502

serviceset(){
cp -p /usr/share/doc/dhcp*/dhcpd.conf.example /etc/dhcp/dhcpd.conf
echo "ddns-update-style none;
subnet `echo $net | cut -d '.' -f 1-3`.0 netmask 255.255.255.0 {
       range `echo $net | cut -d '.' -f 1-3`.40 `echo $net | cut -d '.' -f 1-3`.50;
       option routers $net;
       option domain-name-servers 114.114.114.114;
       next-server $net;
      filename \"pexlinux.0\";
}">> /etc/dhcp/dhcpd.conf
#这里通过填写的ip参数来进行设置网段和ip池^^^
systemctl enable dhcpd
systemctl start dhcpd
sed -i '/wait/s/yes/no/' /etc/xinetd.d/tftp
sed -i '/disable/s/yes/no/' /etc/xinetd.d/tftp
systemctl enable tftp
systemctl start tftp
mkdir /var/ftp/centos7
cp -rf /mnt/* /var/ftp/centos7
systemctl enable vsftpd
systemctl start vsftpd
mkdir /var/lib/tftpboot/pxelinux.cfg
echo "default auto
echo "default auto
prompt 1
 
label auto
        kernel vmlinuz
        append initrd=initrd.img method=ftp://$net/centos7  ks=ftp://$net/ks.cfg
 
label linux text
        kernel vmlinuz
        append text initrd=initrd.img method=ftp://$net/centos7  ks=ftp://$net/ks.cfg
 
label linux rescue
        kernel vmlinuz
        append rescue initrd=initrd.img method=ftp://$net/centos7  ks=ftp://$net/ks.cfg">> /var/lib/tftpboot/pxelinux.cfg/default
echo "---------------------------------------------------------------------------"
echo "The main services are ready!"
echo "dhcpd:" 
systemctl status dhcpd | grep -i active
echo "tftp:"
systemctl status tftp | grep -i active
echo "vsftpd:"
systemctl status vsftpd | grep -i active
echo "----------------------------------------------------------------------------"
}

六、将装机文件移动到tftp文件夹

简单的cp命令

filemv(){
cp /mnt/images/pxeboot/initrd.img /var/lib/tftpboot/
cp /mnt/images/pxeboot/vmlunz /var/lib/tftpboot/
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/
echo "---------------------------------------------"
echo "The main pxe-files are already in position!"
echo "请进入桌面点击kickstart进行配置！"
echo "感谢使用，熊猫烧香"
echo "---------------------------------------------"
exit
}

 kickstart这里还是需要在桌面环境中操作，并将保存的配置文件存放在 var/ftp/下

七、使用case让用户选择使用函数方法

main()
{
case $i in
1)
firewalldset
;;
2)
install
;;
3)
serviceset
;;
4)
filemv
;;
5)
echo "感谢使用，熊猫烧香"
exit
;;
*)
echo "错误的输入,请重新选择"
;;
esac
}
main $*