Open Stack

On 03/26/2015 07:54 PM, Russell Bryant wrote:
> Gary and Kyle, I saw in my IRC backlog that you guys were briefly
> talking about testing the Neutron ovn ml2 driver.  I suppose it's time
> to add some more code to the devstack integration to install the current
> ovn branch and set up ovsdb-server to serve up the right database for
> this.  I'll try to work on that tomorrow.  Of course, note that all we
> can set up right now is the northbound database.  None of the code that
> reacts to updates to that database is merged yet.  We can still go ahead
> and test our code and make sure the expected data makes it there, though.

With help from Kyle Mestery, Gary Kotton, and Gal Sagie, some great
progress has been made over the last few days.  Devstack support has
merged and the ML2 driver seems to be doing the right thing.

After devstack runs, you can see that the default networks created by
devstack are in the OVN db:

> $ neutron net-list
> +--------------------------------------+---------+--------------------------------------------------+
> | id                                   | name    | subnets                                          |
> +--------------------------------------+---------+--------------------------------------------------+
> | 1c4c9a38-afae-40aa-a890-17cd460b314b | private | 115f27d1-5330-489e-b81f-e7f7da123a31 10.0.0.0/24 |
> | 69fc7d7c-6906-43e7-b5e2-77c059cf4143 | public  | 6b5c1597-4af8-4ad3-b28b-a4e83a07121b             |
> +--------------------------------------+---------+--------------------------------------------------+

> $ ovn-nbctl lswitch-list
> 47135494-6b36-4db9-8ced-3bdc9b711ca9 (neutron-1c4c9a38-afae-40aa-a890-17cd460b314b)
> 03494923-48cf-4af5-a391-ed48fe180c0b (neutron-69fc7d7c-6906-43e7-b5e2-77c059cf4143)

> $ ovn-nbctl lswitch-get-external-id neutron-1c4c9a38-afae-40aa-a890-17cd460b314b
> neutron:network_id=1c4c9a38-afae-40aa-a890-17cd460b314b
> neutron:network_name=private

> $ ovn-nbctl lswitch-get-external-id neutron-69fc7d7c-6906-43e7-b5e2-77c059cf4143
> neutron:network_id=69fc7d7c-6906-43e7-b5e2-77c059cf4143
> neutron:network_name=public

You can also create ports and see those reflected in the OVN db:

> $ neutron port-create 1c4c9a38-afae-40aa-a890-17cd460b314b
> Created a new port:
> +-----------------------+---------------------------------------------------------------------------------+
> | Field                 | Value                                                                           |
> +-----------------------+---------------------------------------------------------------------------------+
> | admin_state_up        | True                                                                            |
> | allowed_address_pairs |                                                                                 |
> | binding:vnic_type     | normal                                                                          |
> | device_id             |                                                                                 |
> | device_owner          |                                                                                 |
> | fixed_ips             | {"subnet_id": "115f27d1-5330-489e-b81f-e7f7da123a31", "ip_address": "10.0.0.3"} |
> | id                    | e7c080ad-213d-4839-aa02-1af217a6548c                                            |
> | mac_address           | fa:16:3e:07:9e:68                                                               |
> | name                  |                                                                                 |
> | network_id            | 1c4c9a38-afae-40aa-a890-17cd460b314b                                            |
> | security_groups       | be68fd4e-48d8-46f2-8204-8a916ea6f348                                            |
> | status                | DOWN                                                                            |
> | tenant_id             | ed782253a54c4e0a8b46e275480896c9                                                |
> +-----------------------+---------------------------------------------------------------------------------+

List ports on the logical switch named neutron-1c4c9a38...:

> $ ovn-nbctl lport-list neutron-1c4c9a38-afae-40aa-a890-17cd460b314b
> ...
> 96432697-df3c-472a-b48a-9f844764d4bf (neutron-e7c080ad-213d-4839-aa02-1af217a6548c)

We can also see that the proper MAC address was set on that port:

> $ ovn-nbctl lport-get-macs neutron-e7c080ad-213d-4839-aa02-1af217a6548c
> fa:16:3e:07:9e:68

-- 
Russell Bryant