[root@pxe ~]# cd /tftpboot/
[root@pxe tftpboot]# ls
boot.ipxe  ipxe.efi  undionly.kpxe

# /tftpboot 下的两个文件来自 ipxe-bootimgs
[root@pxe html]# ls -l /usr/share/ipxe/
total 3700
-rw-r--r--. 1 root root  288256 Aug  9  2019 ipxe.dsk
-rw-r--r--. 1 root root  741120 Aug  9  2019 ipxe.efi
-rw-r--r--. 1 root root 1048576 Aug  9  2019 ipxe.iso
-rw-r--r--. 1 root root  288693 Aug  9  2019 ipxe.lkrn
-rw-r--r--. 1 root root 1343488 Aug  9  2019 ipxe.usb
-rw-r--r--. 1 root root   73090 Aug  9  2019 undionly.kpxe
[root@pxe html]# rpm -qf /usr/share/ipxe/ipxe.efi
ipxe-bootimgs-20180825-2.git133f4c.el7.noarch

# boot.ipxe 启动脚本
[root@pxe tftpboot]# cat boot.ipxe
#!ipxe
:start
menu PXE Boot Options
item shell iPXE shell
item centos7-net CentOS 7 installation
item exit  Exit to BIOS
choose --default centos7-net --timeout 2000 option && goto ${option}
:shell
shell
:centos7-net
set base http://192.168.72.131
set server_root ${base}/mnt
initrd ${server_root}/images/pxeboot/initrd.img
kernel ${server_root}/images/pxeboot/vmlinuz inst.ks=${base}/centos7.ks initrd=initrd.img net.ifname=0 biosdevname=0
#kernel ${server_root}/images/pxeboot/vmlinuz inst.repo=${server_root}/ ip=dhcp initrd=initrd.img inst.geoloc=0 devfs=nomount
boot
:exit
exit

[root@pxe tftpboot]# cd /var/www/html/
# /mnt 用来挂载iso
[root@pxe html]# df -h |grep mnt
/dev/sr0                 942M  942M     0 100% /mnt
[root@pxe html]# ls -l
total 4
-rw-rw-r-- 1 root root 1263 Sep  8 16:53 centos7.ks
lrwxrwxrwx 1 root root    4 Sep  8 07:53 mnt -> /mnt
[root@pxe html]#

# 服务启动这两个就行
[root@pxe html]# systemctl |grep -E "httpd|dnsmasq"
dnsmasq.service          loaded active running   DNS caching server.
httpd.service            loaded active running   The Apache HTTP Server
[root@pxe html]#

# dnsmasq的主配置
[root@pxe html]# cat /etc/dnsmasq.conf
port=0
listen-address=192.168.72.131
interface=eth1

enable-tftp
tftp-root=/tftpboot

dhcp-range=192.168.72.200,192.168.72.250,255.255.255.0
#dhcp-range=192.168.72.200,static,255.255.255.0

dhcp-vendorclass=BIOS,PXEClient:Arch:00000
dhcp-match=set:ipxe,175
dhcp-boot=tag:!ipxe,tag:BIOS,undionly.kpxe
dhcp-boot=tag:!ipxe,tag:!BIOS,ipxe.efi
dhcp-boot=tag:ipxe,boot.ipxe

#dhcp-host=00:0c:29:55:77:75,192.168.72.202,cn2