[Openstack-operators] [Neutron] public and private fixed IPs

Kevin Benton blak111 at gmail.com
Sun Oct 25 06:32:41 UTC 2015


Yes, as long as the network is marked as both 'shared' and external, a
tenant can attach VMs and router gateway interfaces directly to it.
On Oct 25, 2015 2:47 PM, "James Denton" <james.denton at rackspace.com> wrote:

> Hi Adam,
>
> If you're asking whether or not a VM can be attached to an 'external'
> network so that the 'public' ip is the fixed IP of them VM, then yes. A
> Neutron router can also be attached to the same network so that instances
> in non-routable tenant networks can obtain floating IPs from the same
> 'public' network. At one time non-admin users were not allowed to attach
> VMs to 'external' networks but I believe that restriction was removed
> around Kilo or so.
>
> James
>
> Sent from my iPhone
>
> > On Oct 25, 2015, at 2:15 PM, Adam Lawson <alawson at aqorn.com> wrote:
> >
> > Hi everyone!
> >
> > When using KVM, does Neutron support binding a public routable address
> > to one VM in one tenant as a fixed IP that is accessible outside the
> > cloud (no floating IP for remote access) and a VM in a separate tenant
> > with private fixed IP's with optional floating IP? Would this be
> > possible on a per tenant or per region basis?
> >
> > I'm working on a cloud approach that allows either scenario.
> >
> > Long story short, I'm trying to support two options in the same cloud
> > (if possible) so a department/tenant can deploy instances with public
> > IP's that are directly accessible by the rest of the enterprise (no
> > NAT) and a second department/tenant that deploys all of their VM's
> > within the context of a private/isolated tenant network with optional
> > floating IP's.
> >
> > Thoughts on how this would be handled? Is it as simple as assigning a
> > public subnet to a tenant as the fixed/tenant network?
> >
> > //adam
> >
> > --
> >
> > *Adam Lawson*
> >
> > AQORN, Inc.
> > 427 North Tatnall Street
> > Ste. 58461
> > Wilmington, Delaware 19801-2230
> > Toll-free: (844) 4-AQORN-NOW ext. 101
> > International: +1 302-387-4660
> > Direct: +1 916-246-2072
> >
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