Open Stack

Kelly,

That's generally correct, though more correct for Swift, OpenStack
Storage than Nova, OpenStack Compute.  Nova doesn't auto-migrate
instances between machines or self-heal unless you add some additional
software (network storage for images) or configurations.  Swift will
deal with the loss of a drive from the storage service by re-balancing
the data to another drive.

Nova will attempt to spread the VMs between servers as they're
created, so if you lose one as long as your application doesn't have a
single point of failure (and handles backups/restores sanely), it'll
keep going.  If you ran something like scalr, you could have Nova VM's
auto-restart if they go down or become unavailable.

http://scalr.net/

On Mon, Dec 19, 2011 at 10:44 AM, Kelly Goedert <kelly.goedert at gmail.com> wrote:
> Hi,
>
> I just started reading about open stack. I've been a user of cloud services
> on amazon. Now I would like to start playing with building my own private
> cloud with some old machines I have. First, I just would like to check if my
> basic understanding is correct. The open stack (with ubuntu installed and
> all the required software) would give a sort of a pool of resources where I
> would install virtual machines with whatever services I want. And if one
> piece of my hardware fails, for example, an HD all my services would
> continue working (as long as of course everything is not on a single
> machine).
>
> Is this correct?
>
> Thanks
>
> Kelly
>
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>



-- 
Jeff Kramer
jeffkramer at gmail.com
http://www.jeffkramer.org/