[openstack-dev] [api] [Nova] [Ironic] [Magnum] Microversion guideline in API-WG

Michael Still mikal at stillhq.com
Mon Jun 22 11:07:50 UTC 2015

(Noting that its kind of late where I am).

Sean, I totally agree that we should fix uname. Let's get on that.


On Mon, Jun 22, 2015 at 8:52 PM, Sean Dague <sean at dague.net> wrote:
> On 06/22/2015 05:28 AM, John Garbutt wrote:
>> On 22 June 2015 at 00:14, Michael Still <mikal at stillhq.com> wrote:
>>> As an aside, do we think that exposing the exact version of a server
>>> process is safe from a security perspective?
>> During discussions in the Nova API meeting, it was noted that while we
>> do expose the exact API version, we are not exposing the git hash of
>> the deployed cloud.
>> Its certainly something we need to consider when we talk about bumping
>> the micro-version for a security fix, but I suspect the need to
>> backport is likely to force us to not bump the API version for such
>> changes.
>> Its certainly a concern that should be noted, in the hope we can get
>> some extra eyes on that detail.
> First, I don't think this is an issue. Like John said, we aren't
> exposing git hash.
> Secondly... the API is a programing interface. Hiding the version number
> on a programing interface is... kind of crazy. It would be like making
> uname -a return ("Probably Linux") instead of anything specific. Or
> "probably libc, your guess is as good as mine". I get where people get
> freaked out about sharing, but, you can't have an API without sharing
> information about what it is and how to use it. The logical follow on
> from hiding the API version is we should delete all the API
> documentation as well, because someone might use it to do a bad thing.
> Thirdly, we're building an endpoint that we expect to be on the
> internet. If we think the only security for it is by hiding information
> about it, I think we've got to go back to the drawing board about a lot
> of things. Yes, it's hard to get that right. But that's kind of the
> whole point of the project. :)
>         -Sean
> --
> Sean Dague
> http://dague.net
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