Glenn Lagasse wrote:
> One part of the automated VM construction project is that we'll need to
> have a VM to install in to.  My original thought was that using
> VirtualBox's cli VBoxManage, DC could configure a VM with either a
> vanilla set of options statically or configure the VM using data
> supplied in a manifest.  The issue I see is that there are a LOT of
> options that one can set for a VM.  And providing support for all of
> them in a manifest is going to be unwieldy.  Using a vanilla set of
> options could work, but then we have to decide what those settings are
> and do they provide what users (those creating the virtual appliances)
> will want.
>   
With all the options that we can pass to
the VBoxManage to automatically configure a VM,
some are more important than others in terms of creating VM images, and
some of them would actually affect the resulting image.  One of such
example that I can think of is the size of the virtual hard disk.  Since 
the content
of the virtual hard disk is the output of VM construction, I would think 
that
people might want to specify their desired size.  Other things
kinda have to be a certain way in order for things to work at all.
Examples of those are amount of memory and networking setting.
Without sufficient amount of memory, the ISO might not boot, IPS might not
work.  Without networking setup correctly, we might not be able to install
from the IPS repo on the network.
Then, there are other options like sound support
that we would not need for creating VM images.

Therefore, I don't think we should allow users to specify every single
possible option for creating a VM in a manifest, but I think we should 
give them
the option to specify a few.  Which ones, I don't know, I guess we
can discuss and decide as part of the overall design.

> The third option is to have DC take the name of a pre-configured VM from
> a manifest and use that to install in to.  This would require the user
> running DC to create and configure a VM in VirtualBox before running DC
> and supplying the name (and possibly a few other bits of relevant
> information) in the manifest used to create the virtual appliance.
> This option allows us to not 're-invent the wheel' as it were in terms
> of configuring VMs but does require some manual setup on the part of the
> user before he can actually create his virtual appliance (instead of
> just modifying a manifest and running distro_const build).
>
> Thoughts?
>
>   
Allowing users to alternatively provided a pre-configured VM is also a 
good idea,
but I don't think this should be a required thing to do.  It should just 
be an option.

--Karen

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