Open Stack

On Mon, Mar 2, 2020, at 11:01 AM, Dmitry Tantsur wrote:
> 
> 
> On Mon, Mar 2, 2020 at 5:37 PM Sean Mooney <smooney at redhat.com> wrote:
> > On Mon, 2020-03-02 at 16:49 +0100, Dmitry Tantsur wrote:
> >  > Hi,
> >  > 
> >  > On Mon, Mar 2, 2020 at 4:29 PM Luigi Toscano <ltoscano at redhat.com> wrote:
> >  > 
> >  > > On Monday, 2 March 2020 10:54:03 CET Mark Goddard wrote:
> >  > > > On Mon, 2 Mar 2020 at 06:28, Abhishek Kekane <akekane at redhat.com> wrote:
> >  > > > > Hi Gaëtan,
> >  > > > > 
> >  > > > > Glance team doesn't recommend to use OSC anymore.
> >  > > > > I will recommend you to check the same behaviour using
> >  > > > > python-glanceclient.
> >  > > > 
> >  > > > That's not cool - everyone has switched to OSC. It's also the first
> >  > > > time I've heard of it.
> >  > > > 
> >  > > 
> >  > > Do we have proper microversion support then? This is a blocker for cinder.
> >  > > 
> >  > 
> >  > The ironic team has been successfully hacking around the absence of a
> >  > native microversion support for a while. We use ironicclient instead of
> >  > openstacksdk, which makes things harder. If you use openstacksdk, it's
> >  > easier to teach it microversions. In any case, I can provide some guidance
> >  > if you'd like to.
> >  > 
> >  > Dmitry
> >  that is also problematic.
> >  by harcking around it it gives the ironic command a different behavior to the rest of osc.
> >  osc does support microverions it just does not support automatic versin negociation which is
> >  what you are hacking in.
> 
> Right, and it's a hard requirement for the CLI to be remotely usable.
> > 
> >  i do agree that it would be nice to have support for version negociation where by you could do somehting like
> >  --os-compute-api-version=auto to opt in to it but automatic microverions detetion does make it harder to do help
> >  text generation unless you make "openstack --cloud=my-cloud --os-compute-api-version=auto help server create" call out
> >  to keystone get the nova endpoint and then lookup its max microversion when you render the help text.
> 
> The "auto" must be a default. This is what the users expect: the CLI 
> just working. Defaulting to anything else does them a huge disservice 
> (been there, done that).

As a user I strongly disagree. I don't want an API to magically start acting differently because the cloud side has upgraded. Those changes are opaque to me and I shouldn't need to know about them. Instead I should be able to opt into using new features when I know I need them. This is easily achieved by setting the desired microversion when you know you need it.

> > 
> >  with that said if adding --os-image-api-version=auto was enough to get the glance team to fully adopt osc
> >  then i think that would be better then partioning the community between osc and legacy client.
> >  osc should behave consistently for all projects however so adding negocaiton for ironic and not for other services
> >  is not a good thing imo but i guess you were able to do that as ironic is integrated as a plugin correct?
> 
> Yep. We could not wait for OSC to implement it because the CLI is 
> borderline unusable without this negotiation in place. I don't recall 
> what prevented us from updating OSC, but I think there was a reason, 
> probably not entirely technical.
> 
> Dmitry