######pxe#########
1.install
yum install httpd tftp-server dhcp syslinux -y
httpd ##共享安裝資源
dhcp ##分配ip以及讓客戶主機獲取pexlinux.0文件
pxelinux.0 ##預安裝環境頭文件，用來指定讀取後續文件的程序
tftp-server ##提供tftp協議，令客戶主機可以讀取到預安裝環境
syslinux ##提供pxelinux.0文件
2.啓用服務
1）關閉火牆
systemctl stop firewalld
systemctl disable firewalld
2）打開http服務
systemctl start httpd
systemctl enable httpd
3）開啓tftp服務：
[root@localhost ~]# netstat -anutlpe | grep xinetd
[root@localhost ~]# vim /etc/xinetd.d/tftp
14 disable = no
[root@localhost ~]# systemctl restart xinetd.service
[root@localhost ~]# netstat -anutlpe | grep xinetd
udp 0 0 0.0.0.0:69 0.0.0.0:* 0 92471 5130/xinetd
[root@localhost ~]# chkconfig --list
xinetd based services:
chargen-dgram: off
chargen-stream:off
daytime-dgram: off
daytime-stream:off
discard-dgram: off
discard-stream:off
echo-dgram: off
echo-stream: off
tcpmux-server: off
tftp: on
time-dgram: off
time-stream: off
4)啓用dhcp服務
[root@localhost ~]# cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf
cp: overwrite ‘/etc/dhcp/dhcpd.conf’? y
[root@localhost ~]# vim /etc/dhcp/dhcpd.conf
1 option domain-name "example.com"; ##客戶主機域名
2 option domain-name-servers 172.25.254.254; ##客戶主機獲得到的dns
3 default-lease-time 600; ##默認租約期
4 max-lease-time 7200; ##最長租約期
5 log-facility local7; ##日誌級別
6 subnet 172.25.254.0 netmask 255.255.255.0 { ##網段，子網掩碼
7 range 172.25.254.77 172.25.254.88; ##ip地址池
8 option routers 172.25.254.250; ##客戶主機獲得到的網關
9 filename "pxelinux.0"; ##客戶主機獲得到的預安裝環境頭文件
10 next-server 172.25.254.139; ##指定頭文件所在主機的ip
11 }
[root@localhost ~]# systemctl start dhcpd
[root@localhost ~]# systemctl enable dhcpd
3.設定共享文件
1）製作安裝源
mkdir /var/www/html/rhel7.0
mkdir /iso
mv /root/rhel-server-7.0-x86_64-dvd.iso /iso/
mount /iso/rhel-server-7.0-x86_64-dvd.iso /var/www/html/rhel7.0/
vim /etc/rc.d/rc.local ##永久掛載
3 mount /iso/rhel-server-7.0-x86_64-dvd.iso /var/www/html/rhel7.0/
chmod +x /etc/rc.d/rc.local
2）製作預安裝環境
cp /var/www/html/rhel7.0/isolinux/* /var/lib/tftpboot/ ##isolinux/目錄下有目錄有內核和初始化文件等，複製到/var/lib/tftpboot/，在pexlinux.0引導客戶主機訪問tftp時，訪問這些文件
cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/ ##複製pxelinux.0程序到此處
mkdir /var/lib/tftpboot/pxelinux.cfg
cp /var/lib/tftpboot/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default ##pexlinux.0的配置文件是/var/lib/tftpboot/pxelinux.cfg/default
3）設定自動化部署
yum install system-config-kickstart -y
system-config-kickstart -----> /var/www/html/ks.cfg
vim /var/lib/tftpboot/pxelinux.cfg/default
label autoinstall ##選項標籤
menu label ^Autoinstall RHEL7.0 ##標題
kernel vmlinuz##啓動的內核文件
append initrd=initrd.img repo=http://172.25.254.139/rhel7.0 ks=http://172.25.254.139/ks.cfg quiet ##初始化鏡像 / ##安裝資源 / ##自動安裝腳本