Question: how to pxe boot centos?
Answer: Step:1 Install required packages for PXE Setup. Step:2 Configure DHCP Server for PXE. Step:3. ...  Step:4 Mount CentOS 7.x ISO file and copy its contents to local ftp server. Step:5 Create kickStart & PXE menu file. Step:6 Start and enable xinetd, dhcp and vsftpd service. Step:7 Boot the clients with pxe boot option.