Error Cannot Find A Valid Baseurl For Repo Centos-base
At this point the only safe thing yum can do is fail. Looks like the main issue is that the Fedora Core site (http://fedora.redhat.com) is down at the moment, and the mirrorlist is right there. elec says: 10-Jul-2014 at 8:33 am You are changing a comment line !!! Eg.