[openstack-dev] [Neutron][L3] Stop agent scheduling without topping sevices

Kyle Mestery mestery at mestery.com
Thu Jan 8 15:25:44 UTC 2015

On Thu, Jan 8, 2015 at 8:49 AM, McCann, Jack <jack.mccann at hp.com> wrote:

> +1 on need for this feature
> The way I've thought about this is we need a mode that stops the
> *automatic*
> scheduling of routers/dhcp-servers to specific hosts/agents, while allowing
> manual assignment of routers/dhcp-servers to those hosts/agents, and where
> any existing routers/dhcp-servers on those hosts continue to operate as
> normal.
> The maintenance use case was mentioned: I want to evacuate
> routers/dhcp-servers
> from a host before taking it down, and having the scheduler add new
> routers/dhcp
> while I'm evacuating the node is a) an annoyance, and b) causes a service
> blip
> when I have to right away move that new router/dhcp to another host.
> The other use case is adding a new host/agent into an existing environment.
> I want to be able to bring the new host/agent up and into the neutron
> config, but
> I don't want any of my customers' routers/dhcp-servers scheduled there
> until I've
> had a chance to assign some test routers/dhcp-servers and make sure the
> new server
> is properly configured and fully operational.
> These are all solid reasons for adding this, and it makes sense to me as
well. From a deployers perspective, these would be a big win.

Given we have already filed a bug, hopefully we can get this addressed soon.


> - Jack
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> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
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