On 6 June 2016 at 17:05, Andreas Scheuring <scheu...@linux.vnet.ibm.com> wrote:
> Is there a chance to get rid of this vif-plugged event at all? E.g. by > transitioning it to an ReST API interface? As far as I know this is the > only RPC interface between neutron and nova. > This handshake between Neutron and Nova does not happen over RPC > > > -- > ----- > Andreas > IRC: andreas_s (formerly scheuran) > > > > On Mo, 2016-06-06 at 20:25 +0900, Akihiro Motoki wrote: > > Hi, > > > > If I understand correctly, what you need is to expose the neutron > > behavior through API or something. In this particular case, neutron > > need to send a vif-plugged event when neutron detects some event in > > the data plane (VIF plugging in OVS or some virtual switch). Thus I > > think the question can be generalized to whether we expose a > > capability (such that neutron server behaves in XXX way) through API > > (API version? extension?). For example, do we have an extension to > > expose that neutron supports the event callback mechanism? > > > > I also think the important point is that it is a topic of > > deployment.Operators are responsible of deploying correct combination > > of nova and neutron. > > > > Honestly I am not sure we need to expose this kind of things through > > API. Regarding the current event callback mechanism, we assume that > > operators deploy the expected combination of releases of nova and > > neutron. Can't we assume that operators deploy Newton nova and neutron > > when they want to use live-migration vif-plugging support? > > > > Akihiro > > > > 2016-06-06 17:06 GMT+09:00 Oleg Bondarev <obonda...@mirantis.com>: > > > Hi, > > > > > > There are cases where it would be useful to know the version of > Neutron (or > > > any other project) from API, like during upgrades or in cross-project > > > communication cases. > > > For example in https://review.openstack.org/#/c/246910/ Nova needs to > know > > > if Neutron sends vif-plugged event during live migration. To ensure > this it > > > should be enough to know Neutron is "Newton" or higher. > > > > > > Not sure why it wasn't done before (or was it and I'm just blind?) so > the > > > question to the community is what are possible issues/downsides of > exposing > > > code version through the API? > > > > > > Thanks, > > > Oleg > > > > > > > __________________________________________________________________________ > > > OpenStack Development Mailing List (not for usage questions) > > > Unsubscribe: > openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > > > > > > __________________________________________________________________________ > > OpenStack Development Mailing List (not for usage questions) > > Unsubscribe: > openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >
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