[CentOS] yum repo priority

[Alan McKay]

> Install yum-priorities and give dag a higher priority.  This will make
> sure that nothing is pulled from it unless it is not available in the
> main repositories.  You can use the "exclude=" setting on the base
> repositories if there is something there that you would rather get
> elsewhere.

Excellent - about to test now!

This also allows me to set my internal postgresql repo as a higher
priority than CentOS so that I can avoid some of the other fancy
footwork I'm doing!


-- 
“Don't eat anything you've ever seen advertised on TV”
         - Michael Pollan, author of "In Defense of Food"