[openstack-dev] [ironic] static Portgroup support.

Vasyl Saienko vsaienko at mirantis.com
Tue Aug 9 08:28:39 UTC 2016

Hello Ironic'ers!

We've recorded a demo that shows how static portgroup works at the moment:

Flat network scenario: https://youtu.be/vBlH0ie6Lm4
Multitenant network scenario: https://youtu.be/Kk5Cc_K1tV8

Vasyl Saienko

On Tue, Jul 19, 2016 at 3:30 PM, Vasyl Saienko <vsaienko at mirantis.com>

> Hello Community,
> Current portgroup scenario is not fully clear for me. The related spec [3]
> doesn't clearly describe it. And based on implementation [1] and [2] I
> guess it should work in the following fashion for node with 3 NICs, where
> eth1 and eth2 are members of Porgroup Po0/1
> Node network connection info:
> eth1 (aa:bb:cc:dd:ee:f1) <---> Gig0/1
> eth2 (aa:bb:cc:dd:ee:f2) <---> Gig0/2
> eth3 (aa:bb:cc:dd:ee:f3) <---> Gig0/3
> For FLAT network scenario:
> 1. Administrator enrol ironic node.
> 2. Administrator creates a 3 ports for each interface, and a portgroup
> that contains eth0 and eth1 ports.
> 3. The ports Gig0/1 and Gig0/2 are added to portgroup Po0/1 manually on
> the switch.
> 4. When user request to boot an instance, Nova randomly picks interface
> [2], it might be a portgroup or single NIC interface. Proposed change [1]
> do not allow to specify what exactly network type we would like to use
> single NIC or portgroup.
> For multitenancy case:
> All looks the same, in addition administrator adds local_link_connection
> information for each port (local_link_connection 'port_id' field is
> 'Gig0/1' for eth1, 'Gig0/2' for eth2 and 'Gig0/3' for eth3, ). Ironic send
> this information to Neutron who plugs ports to needed network.
> The same user-scenario is available at the moment without any changes to
> Nova or Ironic. The difference is that administrator creates one port for
> single interface eth3 with local_link_connection 'port_id'='Gig0/3',  and a
> port that is a logical representation of portgroup (eth1 and eth2) with
> local_link_connection 'port_id'='Po0/1'.
> Please let me know if I've missed something or misunderstood current
> portgroup scenario.
> Reference:
> [0] https://review.openstack.org/206163
> [1] https://review.openstack.org/332177
> [2] https://github.com/openstack/nova/blob/06c537fbe5bb4ac5a3012642c899df
> 815872267c/nova/network/neutronv2/api.py#L270
> [3] https://specs.openstack.org/openstack/ironic-specs/specs/
> not-implemented/ironic-ml2-integration.html
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