Public bug reported:

A while ago, we changed the ec2 publishing scripts to launch instances
in each region concurrently rather than serially during the publish to
ebs phase.

Ever since then, in a build failure, there was the possibility of an instance 
being orphaned and never killed.
That resulted in m1.large instances sitting around doing nothing, and charging 
us money.
I'd then find them later and kill them, but damage was done.

We need do do everything we can to not leak have instances left running.

I think there are 2 things to do here:
 a.) fix the scripts so that they correctly terminate instances on failure
 b.) in the event of future failure, having a 'reaper' that would kill 
instances up to long.

** Affects: ubuntu
     Importance: Medium
     Assignee: Scott Moser (smoser)
         Status: In Progress


** Tags: cloud-images ec2-images

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https://bugs.launchpad.net/bugs/927823

Title:
  publish-build-ebs can leak instances

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