shell基础之pxe批量部署

通过安装及配置DHCP，tftp-server，xinetd，httpd，syslinux来实现批量安装Linux系统

#!/bin/bash
#检查环境
se_state=`getenforce`
if [ $se_state != "Disabled" ];then
setenforce 0
sed -i 's/=enforcing/=disabled/g' /etc/selinux/config
fi
systemctl start firewalld
systemctl enable firewalld &> /dev/null
#检查yum源
mo_point=`ls / |grep local_dvd`
if [ -z $mo_point ];then
mkdir /local_dvd
mount /dev/cdrom /local_dvd
#echo "/dev/sr0 /local_dvd iso9660 defaults 0 0 " >> /etc/fstab
mkdir /etc/yum.repos.d/old
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/old
echo "[local]
name=local
baseurl=file:///local_dvd
enabled=1
gpgcheck=0" >> /etc/yum.repos.d/local.repo
yum clean all
yum makecache
fi
#安装服务
yum -y install dhcp tftp-server xinetd httpd syslinux
#配置DHCP
IP=`ifconfig |grep -w inet |grep broad |awk '{print $2}'`
NETM=`ifconfig |grep -w netmask |grep broad |awk '{print $4}'`
NETW=`echo $IP |awk -F. '{print $1"."$2"."$3}'`
echo "option domain-name \"example.org\";
option domain-name-servers ns1.example.org, ns2.example.org;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet $NETW.0 netmask $NETM {
  range $NETW.10 $NETW.200;
  option routers $IP;
  filename \"pxelinux.0\";
  next-server $IP;
}" > /etc/dhcp/dhcpd.conf
#配置tftp
mkdir /tftpboot
sed -i '13s/\/var\/lib//g' /etc/xinetd.d/tftp
sed -i '14s/yes/no/g' /etc/xinetd.d/tftp
#配置httpd,挂载系统光盘
mkdir /var/www/html/http_iso
mount /dev/cdrom /var/www/html/http_iso
#echo "/dev/cdrom /var/www/html/http_iso iso9660 defaults 0 0 " >> /etc/fstab
#拷贝引导程序到tftp目录下
cp /var/www/html/http_iso/isolinux/vmlinuz /tftpboot
cp /var/www/html/http_iso/isolinux/initrd.img /tftpboot
mkdir /tftpboot/pxelinux.cfg
cp /var/www/html/http_iso/isolinux/isolinux.cfg /tftpboot/pxelinux.cfg/default
cp /usr/share/syslinux/pxelinux.0 /tftpboot
#修改默认启动程序
sed -i '1s/vesamenu.c32/ks/g' /tftpboot/pxelinux.cfg/default
sed -i 120d /tftpboot/pxelinux.cfg/default
echo "label ks
  menu label ^Install CentOS 7
  kernel vmlinuz
  append initrd=initrd.img method=http://$IP/http_iso ks=http://$IP/ks.cfg devfs=nomount
menu end " >> /tftpboot/pxelinux.cfg/default
#拷贝ks文件到httpd工作目录下
cp ~/anaconda-ks.cfg /var/www/html/ks.cfg
#给ks文件增加可读权限
chmod a+r /var/www/html/ks.cfg
#修改ks文件的系统安装方式
sed -i '1,10s/cdrom/install/g' /var/www/html/ks.cfg
sed -i 5a"url --url=\"http://$IP/http_iso\"" /var/www/html/ks.cfg
#启动服务
systemctl restart dhcpd httpd xinetd
#systemctl enable dhcpd httpd xinetd
#添加防火墙
firewall-cmd --add-port=67/udp --permanent
firewall-cmd --add-port=69/udp --permanent
firewall-cmd --add-port=80/tcp --permanent
firewall-cmd --reload