[CentOS] Not getting updates?

I installed CentOS 7 late last year to use as my Nagios/Cacti Monitoring
server.  Clean install, nothing real complicated just the server version
with no GUI, just command line/SSH.

I have noticed over the last 3 months that I've not had ANY updates when I
run 'yum update'.  I have run 'yum clean all' to see if that might be a
problem, and I've made sure the updates repo is enabled (it is), but I'm
getting no CentOS updates.

Did something change that I'm not aware of?  I'm even clueless how to being
debugging this.  I'm no noob to RPM based systems as I run Fedora pretty
much everywhere else.

Ideas?


-- 
Mark Haney
Sr. Systems Engineer, VIF International Education
mark.haney at vifprogram.com
919-265-5006