Re: Cloud image lifetimes

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On Wednesday, March 18, 2015 06:38:13 PM David Gay wrote:
> Greetings!
> 
> We sort of ran out of time in today's Cloud WG meeting, but I did want to
> ask:
> 
> What are your thoughts on AMI lifetimes? That is to say, how long should EC2
> AMIs exist before they're deleted? A few points to consider:
> 
> - AMIs only cost us for storage, so it's not a *huge* cost to maintain a
> public AMI - At the same time, there are a lot of AMIs, since we build 2-4
> per AWS region per build, and that number is growing - There are 9 regions
> now, and we have 2 virtualization types, and 2 volume types, as well (9
> regions * 2 * 2 = 36 AMIs per Base image build, 18 for Atomic builds (since
> they are only available in HVM format)) - This total number will only grow
> larger as we add instance-store AMIs, and so on - This isn't even taking
> into account any costs we'll have once we secure a deal with other
> providers like HP, Rackspace, and GCE, to maintain public images on their
> services

your math is off, there should only be 9 Atomic as we only build it for x86_64 
where we build the base for i386 and x86_64  so you have two arches by 2 image 
types by 9 regions

Dennis

> I propose we have some sort of discussion regarding how long cloud image
> builds should be available on services like AWS. I suspect this will
> resolve to having different lifetimes for scratch, test, RC, final, and
> maybe other build types.
> 
> Any input is appreciated. We can certainly talk about this at next week's
> meeting, as well.
> 
> -- David
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