[Xen-users] Xen and EC2 power DARPA Network Challenge Team DeciNena

[Chris 'Xenon' Hanson <xenon@xxxxxxxxxxxxxx>]

  I just wanted to drop a note to this list and mention how awesome Xen (and 
Drupal, if
folk are into that) has been in helping me field my team website for the DARPA 
Network
Challenge (tomorrow) https://networkchallenge.darpa.mil/default.aspx

  My site, Team DeciNena:
http://decinena.com/

  is currently run on a 32-bit Ubuntu PV DomU (LAMP+Drupal) on a Debian 5 
(Lenny) 64-bit Dom0.

  Here's a writeup about our Drupal side of things:
http://drupal.org/node/649860


  We are anticipating high traffic during the event tomorrow, so we have 
replicated the
site over to Amazon EC2/S3/RDS. We have one central RDS (EC2/Xen cloud system 
running
MySQL) that runs the database, and we can dynamically add/remove nodes from teh 
RDS
cluster via Amazon's AWS control panel.

  We also have one EC2 machine running and NFS server that stores and shares 
the common
dynamic site content (static site content like the Drupal installation lives on 
the actual
EC2 node to reduce NFS traffic).

  We also have any number of identical EC2 Ubuntu nodes installed with Apache 
and the
Drupal site. These actually process the HTTP requests from the client users, 
and talk to
the NFS and RDS servers.

  The original Xen machine switches to being a load-balancing redirector when 
the site
makes the cutover to the cloud-based implementation, so I don't have to wait 
for DNS
changes to propagate.


  Xen and Xen-based-EC2 have been instrumental in making this happen. 
Virtualization is
awesome.


  Yes, I'm also blatantly self-promoting my team. Come join me and maybe share 
in part of
the $40,000 prize, even if you aren't the one who spots a balloon. Even if you 
can't join,
I request you send a note to your friends/twitter/facebook about it. That's the 
actual
goal of DARPA's game -- social network exploration.

-- 
Chris 'Xenon' Hanson, omo sanza lettere                  Xenon AlphaPixel.com
PixelSense Landsat processing now available! http://www.alphapixel.com/demos/
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen

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