So far I've had very good luck with preupgrade for 12 to 14 and 13 to 14 systems.  There's one annoyance that is causing me some headache.  I have a couple of systems that are headless and remote that I'd like to do a preupgrade on but I can't seem to get things started without some local keyboard interaction. I need let preupgrade and/or anaconda know that it's supposed to use eth0 (some systems have more than one NIC).  And I need to specify the language and keyboard layouts from within preupgrade and or the grub entry that launches the upgrade. Currently I run preupgrade and then manually tweak /boot/grub/grub.conf to load the 14 installer automatically with a vnc session waiting for a connection.  But this only happens after I locally tell the system to use English, a US keyboard and (sometimes) eth0.  It's causing me to hold off on upgrading some systems until I can prove that I can get the 14 installer to launch all the way into the VNC session being ready with no local interaction necessary.

From a computer with ssh and an X-server:

Robert Myers <rbmyersusa(a)gmail.com&gt; writes: > On Fri, Nov 5, 2010 at 8:44 AM, Steve Berg <sberg(a)mississippi.com&gt; wrote: >> So far I've had very good luck with preupgrade for 12 to 14 and 13 to 14 >> systems.  There's one annoyance that is causing me some headache.  I have >> a couple of systems that are headless and remote that I'd like to do a >> preupgrade on but I can't seem to get things started without some local >> keyboard interaction. >> >> I need let preupgrade and/or anaconda know that it's supposed to use eth0 >> (some systems have more than one NIC).  And I need to specify the language >> and keyboard layouts from within preupgrade and or the grub entry that >> launches the upgrade. >> >> Currently I run preupgrade and then manually tweak /boot/grub/grub.conf to >> load the 14 installer automatically with a vnc session waiting for a >> connection.  But this only happens after I locally tell the system to use >> English, a US keyboard and (sometimes) eth0.  It's causing me to hold off >> on upgrading some systems until I can prove that I can get the 14 >> installer to launch all the way into the VNC session being ready with no >> local interaction necessary. >> > > Maybe I'm missing something: One some computers preupgraded needs handholding after the first reboot. In my case 3 of the 6 computer upgradede from f13 to f14 asked me to acknowledge the network settings.  I might addd that it had guessed the the settings correctly, it just wanted me to confirm them (eth0, dhcp for ipv4, and the standard RFC automatic config for ipv6).

I just completed FC13->FC14 on a remote machine without touching the remote keyboard. Maybe the fact that there was a keyboard physically attached made the difference, but I suspect that something else--VNC, maybe--is causing the problem.