The DHCP server can also give it the details of a TFTP server from which to retrieve an executable file.When a machine uses the PXE (Pre-eXecution Environment) to boot directly off the network, it needs to get an IP address from a DHCP server.This allows you to control a single source to install servers without the need to physically insert some DVDs or USB sticks. PXE, or Preboot eXecution Environment, allows you to instruct computers to boot using network resources. You can also use other services like NFS, FTP etc to serve the purpose. It is not mandatory to only use the services from this article to configure PXE boot server in Linux. But to configure PXE boot server on RHEL you need an active subscription to be able to download the required rpms or you can also download these rpms by creating a local repository using the RHEL vanilla DVD image.
The same list of steps will work on RHEL 7 as well.
In this article I will share the steps to configure PXE boot server using HTTP, Kickstart and DHCP / DNSMASQ service on a CentOS 7 node.
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