Re: [libvirt] cloud-init integration
On Fri, Jun 19, 2015 at 12:44:51PM +0200, Tobias Florek wrote:
Hi,
if that has been discussed before, please point me to it. I have not
been able to find anything about it.
It would be great to easily generate and cd-attach cloud-init isos when
starting a vm. The config files could be taken from the file system
(e.g. %sysconfdir/cloud-init/host-name) and put into an iso. when the
host stops the generated iso should be removed.
What do you think? If that's a worthwhile cause, I would be glad to
start to implement it, if pointers are given. My C i a little rusty
unfortunately.
I'm not convinced that libvirt needs to be in the business of dynamically
generating application specific disk images. It feels like that is a task
that is more easily accomplished outside of libvirt, by a variety of
pre-existing tools. There are a tonne of tools for building images in
general. Richard Jones illustrated how to build disk images specifically
for cloud init using libguestfs as an example
https://rwmj.wordpress.com/2013/12/10/creating-a-cloud-init-config-disk-f...
So it seems sufficient to leave it to external apps. I'm not saying
you shouldn't create some general purpose tool to build it from
templates though - just that it doesn't need to be in libvirt. I could
see value in perhaps adding some code for doing this, and a CLI tool
into the virt-manager project for example. eg so virt-manager and
virt-install could simplify the task of initializing cloud init when
they deploy Vms.
Regards,
Daniel
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