[olug] upgrading to Fedora 21 - smoothest one in a while

[Lou Duchez]

I found this article:

http://fedoraproject.org/wiki/Features/SystemdPredictableNetworkInterfaceNames

Apparently, the issue is, when Linux boots it auto-detects network 
devices and assigns them values of "eth0", "eth1", etc in whatever order 
it detects them.  Or at least that's what it used to do; Fedora is 
moving away from that because you can't guarantee which order it's going 
to detect them in.  So devices these days tend to have names like "eno1" 
or "enp5s2", all BIOS-related so they theoretically can't change.

What do you get when you run "ls -l /etc/sysconfig/network-scripts/ifcfg-*"?



> Ok, so I did this on my laptop, and it now will not connect to any network, much less recognize the network chipsets.  They show up in lspci, but don't have entries in /dev.
>
> Any ideas?
>
> Samuel W. Flint
> Please forgive any typos as this was composed on a screen keyboard.
>
>> On Dec 12, 2014, at 9:14 PM, Lou Duchez <lou at paprikash.com> wrote:
>>
>> So it's Fedora upgrade time again; I've upgraded a half dozen servers without any hitches.  The process I've been following:
>>
>> 1) "yum update" to make sure you're up to date on your Fedora 20.
>>
>> 2) "package-cleanup --leaves" and "package-cleanup --orphans" to find any packages that yum doesn't quite know what to do with.  Then run "yum remove ________" to get rid of all those packages.
>>
>> 3) "yum clean all"
>>
>> 4) "yum --releasever=21 distro-sync"*
>>
>> 5) This is a new wrinkle: Fedora 21 now comes in three basic products, "workstation", "cloud", and "server".  So you are now to run one of the four following commands to pick which of the three products you want:
>>
>>     yum install system-release-workstation
>>     yum install system-release-cloud
>>     yum install system-release-server
>>     yum install system-release-nonproduct
>>
>>     I went with "nonproduct".
>>
>> 6) Figure out which device you boot from, by running this command:
>>
>>     df | grep "/boot$" | cut -f 1 -d " "
>>
>>     It will probably return something like "/dev/sda1", which is actually a partition and not a device.  But in this case, the device is "/dev/sda".
>>
>> 7) Run "grub2-install BOOTDEVICE" (which would be the device from the previous step)
>>
>> 8) Reboot!  If your experience is anything like mine, your server will come right up without any problems.
>>
>>
>> *: One thing I like to do is, after yum has downloaded all the version 21 files it needs and has started installing them, I hit Ctrl-Z and then run "bg" to make yum run in the background.  That way, even if my SSH session gets disconnected, there's still a pretty good chance that yum can and will run to completion, rather than screeching to a halt halfway through.
>>
>>
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