Re: [Libguestfs] febootstrap 3.x use cases.
On Tue, Apr 03, 2012 at 01:31:55PM +0100, Carwyn Edwards wrote:
> febootstrap is intended for building supermin appliances, see:
>
> http://libguestfs.org/febootstrap.8.html#supermin_appliances
Thanks Richard! Maybe a better question would be what are the use
cases for supermin appliances? What are they not suitable for?
Well we use them in libguestfs as a secure and efficient alternative
to distributing a whole appliance, on Fedora and Debian.
What I'm after is something akin to a Solaris sparse Zone. i.e.
most
of the files are the same are the parent OS except the website's data
files, a tiny amount of config and it needs to be jailed off from all
the other hosted sites.
At one point I was going to write a virtio 9p extension to qemu to do
this. Didn't get around to it, but it would be very useful ...
This wouldn't help you for LXC though.
It would seem that an on demand launched supermin with the web
server
config, ip address and a document root would fit well? Apart from
these bits of data all the containers would be identical. In fact we
very much want everything else to be the same.
Supermin appliances give you a disk image (or cpio file, if you
prefer). They don't give you a host filesystem, so they're probably
not going to be much use for LXC, without a great deal of hacking.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org