[openstack-dev] [Neutron] Deprecating the use_namespaces option - Now's the time to speak up!
amuller at redhat.com
Fri Mar 20 20:09:05 UTC 2015
----- Original Message -----
> Assaf Muller <amuller at redhat.com> writes:
> > Hello everyone,
> Hi Assaf,
> > The use_namespaces option in the L3 and DHCP Neutron agents controls if you
> > can create multiple routers and DHCP networks managed by a single L3/DHCP
> > agent,
> > or if the agent manages only a single resource.
> > Are the setups out there *not* using the use_namespaces option? I'm curious
> > as
> > to why, and if it would be difficult to migrate such a setup to use
> > namespaces.
> > I'm asking because use_namespaces complicates Neutron code for what I
> > gather
> > is an option that has not been relevant for years. I'd like to deprecate
> > the option
> > for Kilo and remove it in Liberty.
> I'm not clear what you're proposing. After the option is removed, will
> the code always behave as it used to when use_namespaces was False, or
> as when it was True?
I'm sorry, I should have specified: I propose to remove the option and
keep the default behavior, which is True.
> FWIW, my project Calico  uses a modified Neutron DHCP agent, where
> the behaviour for use_namespaces = False is closer to what we need. So
> we effectively arrange to ignore the use_namespaces setting, and behave
> as though it was False .
> However, that isn't the only change we need, and it's also not clear
> that patching the Neutron DHCP agent in this way (or looking at
> upstreaming such a patch) will be our long term approach. Hence this
> case probably shouldn't be a significant one for deciding on your
>  http://www.projectcalico.org/
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