[Maas-devel] Fixing static DHCP

[Dean Henrichsmeyer]

On Thu, May 29, 2014 at 4:26 AM, Mark Shuttleworth <mark at ubuntu.com> wrote:

> On 27/05/14 16:02, Dean Henrichsmeyer wrote:
> >  We're fine with such
> > use being explicit - meaning you allocate explicitly by asking MAAS for
> it
> > and you deallocate it explicitly by telling MAAS you don't need it
> anymore.
>
> That's what you'll get, yes. Not sure about the MAC for those IPs
> though; do you prefer it as a new generated MAC for the host? Or an
> additional IP for the existing NIC MAC?
>

Actually neither. It's an IP that will be used as a service endpoint in
OpenStack. There will be different hosts loosely associated with those
virtual IPs at any given time so the IPs in question really shouldn't be
tied to any known piece of hardware in MAAS.

Explicit deallocation seems to be the most straightforward but there are
other options. An IP could be "associated" with multiple nodes and remain
allocated so long as *any* node is still associated with the IP. The
downside of that would be as machines are added/removed from the pool that
association would have to be managed.

The main difference here is that the allocation of an IP for this purpose
is distinctly independent from hardware resources in MAAS.

-Dean
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