how to configure pxe boot server in centos 7?
['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.']