[Gllug] Anyone used Amazon EC2 Elastic Compute Cloud (grid computing type thingy)?

[Daniel P. Berrange]

On Wed, Oct 25, 2006 at 04:14:15PM +0100, Tethys wrote:
> 
> Richard Jones writes:
> 
> >We're looking to rent supercomputers for serious number crunching.
> 
> Don't know if it's still an issue, but we played around with EC2
> a while back, and found out that they don't wipe the disk between
> customers. They merely rebuild the filesystem. That meant we could
> look at /dev/sda, and see data from previous users of the system.
> Not a huge issue for us, as we don't have any data that would be
> particularly meaningful for anyone else, but it could be a major
> problem for others.

Opps! Seems like rather a nasty oversight of their part. Still you can
easily just stick dm-crypt into the stack, initializing with a key you
then dispose of, so once the VM reboots the data is essentially garbage.

Dan.
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