https://wiki.centos.org/HowTos/CreatePublicMirrors

i have just follow that link, 

but received the error

==

msync.CentOS.org rsync service (centosb7)
---------------------------------------

This service is intended for the sole use of the CentOS worldwide mirror network
to synchronize mirrors.

Unless you are running or intending to run a listed public CentOS mirror
use a mirror listed at http://centos.org/download/mirrors

If you intend to populate a mirror for public use please read the
notes at http://wiki.centos.org/HowTos/CreatePublicMirrors

If you do use this service then it is implied that you are providing a
mirror for public use and giving us authority to publicise such mirror.

@ERROR: Unknown module 'CentOS'
rsync error: error starting client-server protocol (code 5) at main.c(1503) [receiver=3.0.6]

==

any idea ?

@ERROR: Unknown module 'CentOS'