Thought on cloud-init vs. first boot
ayoung at redhat.com
Wed Mar 7 16:54:05 UTC 2012
On 03/06/2012 12:30 PM, Dennis Gilmore wrote:
> El Tue, 6 Mar 2012 11:08:22 -0600
> Dennis Gilmore<ausil at fedoraproject.org> escribió:
>> El Mon, 05 Mar 2012 14:03:43 -0500
>> Adam Young<ayoung at redhat.com> escribió:
>>> Wanted to float this by you first before opening it to a wider
>>> For fedora's VM image, we can add an additional RPM that drops a
>>> firstboot module in with priority -1 (If that is in fact allowed,
>>> other wise priority 0, and reschedules language to 1) that will
>>> run cloud-init and, upon success, disable all other firstboot
>>> modules. If it fails, firstboot runs as per normal.
>>> What do you think?
>> I really don't think it will work, AFAIK cloud-init if it fails will
>> keep trying until it succeeds because the data it needs may not be
>> available initially. We are really too late for F17. putting in a
>> framework to deal with it properly will take some work. I think that
>> maybe a good solution would be to deal with it via a boot time flag.
>> the question then becomes how exactly would it work?
>> Id think something like this. we add the boot flag to the grub1
>> config which is used by ec2. grub2 being unaffected. we would
>> then need teach cloud-init which we would need to set with
>> dependencies higher to run before firstboot would see the flag and
>> disable firstboot. now im not 100% sure that we can actually do that.
>> then anyone that deploys the images to an ec2 like environment like
>> eucalyptus would need to make sure they set the flag in their grub2
>> config for deployment.
>> of course a lot of this is all speculation on how it all works. I
>> think for F17 we should make 2 sets of base virt guest images. one
>> that has cloud-init and one that has firstboot. then the user can
>> choose which to grab.
Agreed that cloud-init and Firstboot won't work together.
Another thought is that we could modify the live CD image such that it
can better be used as a Virtual Machine. What we have is fairly close
to that solution already, so what it would need is:
1. An easy way to generate a Persistant store for the /var/ /home and
2. An easy way to resize the ISO image to something large enough to
This is obviously a pretty big stretch, and I wouldn't expect it could
be a F17 task. It might be the wrong approach, but it would be worth at
least talking through it.
The EC2 images are pretty much "minimal" installs, right? I think that
they should continue to be separate from the Fedora appliance for
virtualization anyway. The appliance should be comparable to the Live
CD: Gnome Desktop and all.
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