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Yes, dnsmasq is there as a simple solution for people that didn't want a
separate DNS server specified in their subnet.

Can you just enable DHCP on the subnet? Even though your containers don't
use it for addressing, it will still work for resolving DNS. (it doesn't
answer anonymous DHCP queries if you're worried about that)

On Wed, May 11, 2016 at 10:40 AM, Mike Spreitzer <mspreitz at us.ibm.com>
wrote:

> > On Tue, May 10, 2016 at 11:28 AM, Kevin Benton <kevin at benton.pub> wrote:
> > neutron subnet-show with the UUID of the subnet they have a port on
> > will tell you.
> >
> > On Tue, May 10, 2016 at 6:40 AM, Mike Spreitzer <mspreitz at us.ibm.com>
> wrote:
> > "Hayes, Graham" <graham.hayes at hpe.com> wrote on 05/10/2016 09:30:26 AM:
> >
> > > ...
> > > > Ah, that may be what I want.  BTW, I am not planning to use Nova.  I
> am
> > > > planning to use Swarm and Kubernetes to create containers attached to
> > > > Neutron private tenant networks.  What DNS server would I configure
> > > > those containers to use?
> > >
> > > ...
> > >
> > > The DNSMasq instance running on the neutron network would have these
> > > records - they should be sent as part of the DHCP lease, so leaving the
> > > DNS set to automatic should pick them up.
> >
> > IIRC, our Docker containers do not use DHCP.  Is there any other way
> > to find out the correct DNS server(s) for the containers to use?
>
>
> > From: Kevin Benton <kevin at benton.pub>
> > ...
> >
> > Whoops. What I just said was wrong if it hadn't been explicitly
> overwritten.
> >
> > I think you will end up having to do a port-list looking for the DHCP
> port(s).
> > http://paste.openstack.org/show/496604/
>
>
>
> So the DNS server and the DHCP server are bundled together?
>
> Like I said, our Docker containers do not use DHCP.  Our subnets do not
> enable DHCP.  We have no DHCP ports.  Does that mean we do not get internal
> DNS?
>
> Thanks,
> Mike
>
>
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