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[root@ims34177 ~]# cat /etc/yum.repos.d/CentOS-Testing.repo
# !!!! CAUTION !!!!
# This repository is a proving grounds for packages on their way to
CentOSPlus and CentOS Extras.
# They may or may not replace core CentOS packages, and are not
guaranteed to function properly.
# These packages build and install, but are waiting for feedback from
testers as to
# functionality and stability. Packages in this repository will come
and go during the
# development period, so it should not be left enabled or used on
production systems without due
you really do NOT want to use the centos 6 install dvd as a source for rpms
( unless you have NO other choice , as it you are in the middle of nowhere with NO network connection)
the dvd is very out of date
the centos 6.3 dvd is less out of date than the centos 6.0 , but still out of date.
the centos 6.3 dvd was released on July 9 2012 .
the centos 6.0 dvd was released on July 10 2011.
the install media repo should normally be turned off .
this is normally done during the install , but do to bugs it is not always turned off .
you can set up a personal "repo" for the prerequisites needed on a computer that dose have a internet connection
transfer them to a usb and use that to install rpm's on the servers
temporally get the two servers a outside connection
but seeing as you are just at the start of all this a new clean install would be better for a starting point