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Jesse,

Great question :) We need the version that has the grpc gateway v3alpha API:
https://github.com/coreos/etcd/pull/5669

Since we want to standardize on the etcd v3 API (to avoid migration of
data from /v2 to /v3). Unfortunately the v3 API is gRPC based and has
trouble with eventlet based processes. So we need the /v3alpha HTTP
API. You can see the prior discussion and list of bugs from Jay in
https://review.openstack.org/#/c/446983/

the etcd in xenial is 2.x which does not have either the gRPC v3 or
the gRPC+gateway HTTP API.

Thanks,
Dims

On Tue, May 16, 2017 at 5:02 AM, Jesse Pretorius
<Jesse.Pretorius at rackspace.co.uk> wrote:
> On 5/15/17, 11:20 PM, "Davanum Srinivas" <davanum at gmail.com> wrote:
>
>> At this moment, though Fedora has 3.1.7 [1], Xenial is way too old, So
>> we will need to pull down tar balls from either [2] or [3]. proposing
>> backports is a possibility, but then we need some flexibility if we
>> end up picking up some specific version (say 3.0.17 vs 3.1.7). So a
>> download location would be good to have so we can request infra to
>> push versions we can experiment with.
>
> Hi Dims,
>
> I can’t help but ask - how old is too old? By what measure are we saying
> something is too old?
>
> I think we need to be careful with what we do here and ensure that the
> Distribution partners we have are on board with the criteria and whether
> They’re ready to include more recent package versions in their extra
> Archives (eg: RDO / UCA).
>
> As developers we want the most recent things because reasons… but
> Distributions and Operators are then stuck with raised complexity in
> their release and quality management processes.
>
>
>
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-- 
Davanum Srinivas :: https://twitter.com/dims