[cs615asa] Region issues

[Nicholas Bevacqua]

I just discovered a worse issue. Amazon, in order to prevent everyone from
just picking us-east-1a, has different mappings for different accounts.
us-east-1a for 2 different accounts may point to completely different
data-centers. From our perspective, this matters little as we create
everything under one account.

Unfortunately, Amazon has also decided that not only should people not have
the same mappings, but they should even lack mappings on some accounts. One
of my team-mates was unable to find us-east-1c. I, similarly, can't find
us-east-1a. This is all Amazon's doing and we have no control over it.
Rather than just set a default region, I implore everyone to check what
regions are actually available at startup. Otherwise, you might have an
issue if you picked a region the professor has no access to for a default
setting.

-Nick Bevacqua


On Sun, Mar 30, 2014 at 12:33 AM, Hongyi Shen <hshen4 at stevens.edu> wrote:

> Our team just ignore the problem by assuming that user has set region in
> AWS_CONFIG_FILE (or default region of profile).
>
> It is too complicated to solve it ....
>
>
> On Sun, Mar 30, 2014 at 12:14 AM, Nick Smith <nsmith1 at stevens.edu> wrote:
>
>> Hello,
>> In doing some testing I came to realize that AMIs are tied to a specific
>> region. So, basically we have to have an AMI id ready for every region...
>> or look one up. At some point we have to start making assumptions about the
>> environment, can this be one of them?
>>
>> For a real example, if the user supplies a volume id that resides in
>> "us-west-2" we need to have an AMI for that region so we can spin up an
>> instance and mount the volume. This means we have to to test on multiple
>> AMIs and may add a lot of complexity...
>>
>> How have other teams handled this? I'd like to assume a certain region is
>> used to avoid this headache.
>>
>> Thanks,
>> Nick S
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>
>
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