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Correct me if I’m wrong, but with nova-net, ‘nova boot’ automatically gives it one nic with an IP, right?

So how is this changing that behavior? Making it harder to use, for the sake of preserving a really unusual corner case (no net with neutron), seems a much worse user experience here.

Thanks,
doug


> On Feb 12, 2016, at 1:51 PM, Ed Leafe <ed at leafe.com> wrote:
> 
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> On 02/12/2016 02:41 PM, Andrew Laski wrote:
> 
>>> I think if the point of the experience for this API is to be
>>> working out
>>>> of the box. So I very much like the idea of a defaults change
>>>> here to the thing we want to be easy. And an explicit option to
>>>> disable it if you want to do something more complicated.
> 
>> I think this creates a potential for confusing behavior for users. 
>> They're happily booting instances with no network on 2.1, as silly
>> as that might be, and then decide "ooh I'd like to use fancy new
>> flag foo which is available in 2.35". So they add the flag to their
>> request and set the version to 2.35 and suddenly multiple things
>> change about their boot process because they missed that 2.24(or
>> whatever) changed a default behavior. If this fits within the scope
>> of microversions then users will need to expect that, but it's
>> something that would be likely to trip me up as a user of the API.
> 
> I agree - that's always been the trade-off with microversions. You
> never get surprises, but you can't move to a new feature in 2.X
> without also having to get everything that was also introduced in
> 2.X-1 and before. The benefit, of course, is that the user will have
> changed something explicitly before getting the new behavior, and at
> least has a chance of figuring it out.
> 
> - -- 
> 
> - -- Ed Leafe
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