CentOS 7 - CERN for x86_64: Letter M: mrepo
mrepo - A tool to set up a yum/apt mirror from various sources
mrepo builds a local Apt/Yum RPM repository from local ISO files,
downloaded updates and extra packages from RHN and 3rd party
It can download all updates and extras automatically, creates
the repository structure and meta-data, enables HTTP access to
the repository and creates a directory-structure for remote
network installations using PXE/TFTP.
mrepo supports ftp, http, sftp, rsync, rhn and other download methods.
With mrepo, you can enable your laptop or a local server to provide
updates for the whole network and provide the proper files to
allow installations via the network.