环境Redhat7.3
软件准本工作：
[root@localhost ~]# yum install httpd tftp-server dhcpd syslinux system-config-kickstart -y
软件环境的逐个配置：
1.httpd :
***1 [root@localhost ~] mkdir /var/www/html/redhat73 2 [root@localhost ~] mkdir /var/www/html/redhat72 3 [root@localhost ~] mkdir /var/www/html/redhat68 4 [root@localhost ~] mount /iso/rhel-server7.2****.iso /var/www/html/redhat72 5 [root@localhost ~] mount /iso/rhel-server7.3***.iso /var/www/html/redhat73 6 [root@localhost ~] mount /iso/rhel-server6.8***.iso /var/www/html/redhat68 7 [root@localhost ~] service httpd start 8 [root@localhost ~] chkconfig httpd on
2.system-config-kickstart:
在shell中直接运行软将名字，按照一步步的配置即可，最后把ks.cfg文件保存到httpd共享的不同目录下，可以用ksvalidator命令检查语法错误，中共配合三个ks文件分别保存在/var/www/html/ks7,ks72,ks68目录下
3.tftp-server:
[root@localhost ~]# vim /etc/xinetd.d/tftp 13 server_args = -s /var/lib/tftpboot 14 disable = no #yes修改为no 15 per_source = 11 16 cps = 100 2[root@localhost linux]# cd /var/lib/tftpboot/[root@localhost tftpboot]# cp /var/www/html/redhat72/isolinux/vmlinuz redhat72/[root@localhost tftpboot]# cp /var/www/html/source/redhat72/isolinux/initrd.img redhat72/#redhat6.8和redhat7.3一样，从挂载镜像中将initrd.img,vmlinuz 复制到http共享目录中的对应文件夹[root@localhost tftpboot]# mkdir pxelinux.cfg [root@localhost tftpboot]# cp /var/www/html/redhat73/isolinux/isolinux.cfg ./pxelinux.cfg/default[root@localhost tftpboot]# cp /var/www/html/source/redhat73/isolinux/vesamenu.c32 .#isolinux.cfg和vesamenu.c32任意一个系统的考个iuolai都可以[root@localhost tftpboot]# cp /usr/share/syslinux/pxelinux.0 .#pxelinux.0 此文件是在安装主机获得dhcp分配的ip以后要读取的文件[root@localhost tftpboot]# cat pxelinux.cfg/defaultdefault vesamenu.c32timeout 30 #30代表3秒选择时间，默认600（即一分钟）display boot.msg# Clear the screen when exiting the menu, instead of leaving the menu displayed.# For vesamenu, this means the graphical background is still displayed without# the menu itself for as long as the screen remains in graphics mode.menu clearmenu background splash.pngmenu title Red Hat Enterprise Linux 7.3menu vshift 8menu rows 18menu margin 8#menu hiddenmenu helpmsgrow 15menu tabmsgrow 13# Border Areamenu color border * #00000000 #00000000 none# Selected itemmenu color sel 0 #ffffffff #00000000 none# Title barmenu color title 0 #ff7ba3d0 #00000000 none# Press [Tab] messagemenu color tabmsg 0 #ff3a6496 #00000000 none# Unselected menu itemmenu color unsel 0 #84b8ffff #00000000 none# Selected hotkeymenu color hotsel 0 #84b8ffff #00000000 none# Unselected hotkeymenu color hotkey 0 #ffffffff #00000000 none# Help textmenu color help 0 #ffffffff #00000000 none# A scrollbar of some type? Not sure.menu color scrollbar 0 #ffffffff #ff355594 none# Timeout msgmenu color timeout 0 #ffffffff #00000000 nonemenu color timeout_msg 0 #ffffffff #00000000 none# Command prompt textmenu color cmdmark 0 #84b8ffff #00000000 nonemenu color cmdline 0 #ffffffff #00000000 none# Do not display the actual menu unless the user presses a key. All that is displayed is a timeout message.menu tabmsg Press Tab for full configuration options on menu items.menu separator # insert an empty linemenu separator # insert an empty line########################################################################################### INSTALL CONFIG OPTION BEGIN ######################################################################################################label linux menu label ^Install RedHat 7.3 Linux kernel redhat73/vmlinuz append initrd=redhat73/initrd.img ks=http://192.168.1.100/ks7/ks.cfg *#次数不再需要写repo地址了，因为在ks.cfg文件中已经指定了从哪里获取相应的镜像,也指定了安装过程中的各种选择*label linux menu label ^Install RedHat 7.2 Linux #此处也必须要指定内核文件的准确位置，默认读取的内核文件在tftpboot下，此处我们部署的是多个版本，故具体版本读取相应目录下的文件 menu default append initrd=redhat72/initrd.img ks=http://192.168.1.100/ks72/ks.cfg label linux menu label ^Install RedHat 6.8 Linux kernel redhat68/vmlinuz append initrd=redhat68/initrd.img ks=http://192.168.1.100/ks6/ksmini.cfg ############# END LINE FOR LEBEL INSTALL OPTIONS ##################################################################################################### Rescue Mode for all options config ############################################################ utilities submenumenu begin ^Rescue Mode menu title Rescue Mode label rescue menu indent count 5 menu label ^Rescue mode for RedHat 7.3 text help If the system will not boot, this lets you access files and edit config files to try to get it booting again. endtext kernel redhat73/vmlinuz append initrd=redhat73/initrd.img repo=http://192.168.1.100/source/redhat73 rescue quiet#挽救环境必须写repo地址，此处不是安装，故也不需要ks文件，所以此处必须指定从哪里获取挽救环境所需要的资源 label rescue menu indent count 5 menu label ^Rescue mode for RedHat 7.2 text help If the system will not boot, this lets you access files and edit config files to try to get it booting again. endtext kernel redhat72/vmlinuz append initrd=redhat72/initrd.img repo=http://192.168.1.100/source/redhat72 rescue quiet label rescue menu indent count 5 menu label ^Rescue mode for RedHat 6.8 text help If the system will not boot, this lets you access files and edit config files to try to get it booting again. endtext kernel redhat68/vmlinuz append initrd=redhat68/initrd.img repo=http://192.168.1.100/source/redhat68 rescue quietlabel returntomain menu label Return to ^main menu menu exitmenu end###################### END LINE FOR RESCUE MODE ########################################[root@localhost ~]# systemctl start tftp[root@localhost ~]# systemctl enable tftp
dhcpd的配置：
[root@localhost tftpboot]# cat /etc/dhcp/dhcpd.conf |grep -v '#' option domain-name "example.com";option domain-name-servers 192.168.1.100;default-lease-time 600;max-lease-time 7200;log-facility local7;subnet 192.168.1.0 netmask 255.255.255.0 { range 192.168.1.20 192.168.1.99; option routers 192.168.1.250; next-server 192.168.1.100; filename "pxelinux.0";} 配置完成了必须考虑到防火墙，不然防火墙会把httpd共享和tftp都阻塞，进而服务端访问不到，当然关闭防火墙一切搞定,这样肯定不安全，我不喜欢这样，所以作一下防火墙策略ok：
[root@localhost tftpboot]# firewall-cmd --add-service=httpd --permanent [root@localhost tftpboot]# firewall-cmd --add-service=tftp --permanent [root@localhost tftpboot]# firewall-cmd --list-allpublic (active) target: default icmp-block-inversion: no interfaces: br0 enp8s0 wlp9s0 sources: services: dhcpv6-client ftp http ssh tftp ##说明添加上了 ports: 4505/tcp 4506/tcp protocols: masquerade: yes forward-ports: sourceports: icmp-blocks: rich rules: rule family="ipv4" source address="192.168.0.10" masquerade
