[K12OSN] Is yum update safe on 4.2.1EL?

[Les Mikesell]

On Wed, 2005-10-26 at 13:42, Petre Scheie wrote:
> If you have a spare disk, and some time the server can be unavailable, you might pull 
> the existing disk(s) from the server, put in the spare, install 4.2.1EL, do the yum 
> update, and see if anything breaks.  Ah, the beauty of no licensing hassles.

It doesn't have to be that drastic because a kernel update doesn't
overwrite the old one, it just sets the newest as the default in your
grub.conf.  Just do the update and reboot at a time when you can test
and if it appears to be worse than before, edit /etc/grub.conf to make
the previous kernel the default (the entries are numbered from 0 at
the top) and reboot again.   If updates ever add so many kernels that
you are concerned about space in your boot partition you can
rpm -e  the ones that you are sure you won't need again.

-- 
   Les Mikesell
    les at futuresource.com