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-for-... 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 -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|