I am supporting few cluster in some customer location. They are running few scientific software, which requires system auto updates to be disabled. Also nvidia driver is causing issue when kernel gets auto updated either graphical console not working or nvidia stops working. For now I have disabled kernel update like added one line exclude=kernel* in yum.conf.
For more sure I want to disable system auto update in centos 6. I did it graphically like by deselecting system update which come automatically.
Please guide me some command line way. yum-updatesd.conf has been removed from RHEL 6 onwards.