[RFE] Add flavor/service provider support to routers in the L3 OVN plugin

[Miguel Lavalle]

Operators have expressed interest in being able to create and operate virtual routers with different flavors under the OVN L3 plugin. This RFE proposes:

1) Disentangle the management of OVN routers from the OVN L3 plugin and move the associated functionality to a driver, that would be the default driver under the ML2/OVN mechanism driver.

2) Allow operators to define other drivers under the OVN L3 plugin, that will allow the creation and management of virtual routers flavors implemented in other back-ends outside of OVN

A proof of concept patch has been pushed to Gerrit to illustrate the intent of this proposal: https://review.opendev.org/c/openstack/neutron/+/883988

[yatin (yatinkarel)]

Thanks Miguel for proposing it, can you also raise it in today or upcoming Driver Meeting for approval https://meetings.opendev.org/#Neutron_drivers_Meeting

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

This RFE has been approved. A spec will be required to continue with the implementation.

[Miguel Lavalle (minsel)]

Spec: https://review.opendev.org/c/openstack/neutron-specs/+/885324

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Miguel Lavalle <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/887746
Reason: Not needed anymore. The L3 OVN plugin and the L3 OVN plugin with flavors became one

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/883988
Committed: https://opendev.org/openstack/neutron/commit/49366ecada529a929712ded7681d797c75b386cb
Submitter: "Zuul (22348)"
Branch: master

commit 49366ecada529a929712ded7681d797c75b386cb
Author: Miguel Lavalle <email address hidden>
Date: Tue May 23 19:48:49 2023 -0500

    Router flavors and service type for OVN

    Support is added to the OVN L3 service plugin for the router
    flavors and service type framework

    Partial-Bug: #2020823
    Change-Id: If40d7b39e7b59a39ff7622bd823dbdb14bfc69d2

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/908986

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/908986
Committed: https://opendev.org/openstack/neutron/commit/d755c2551ff55696174554cb730e79903c922971
Submitter: "Zuul (22348)"
Branch: master

commit d755c2551ff55696174554cb730e79903c922971
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Tue Feb 13 22:28:25 2024 +0000

    [OVN] Add ``ProviderResourceAssociation`` to any ML2/OVN router

    Since [1], any Neutron router created with ML2/OVN will have an
    associated ``ProviderResourceAssociation`` register. The routers
    created before this feature won't have any and it won't be possible
    to delete them. This patch adds a temporary maintenance task to
    create the needed register for these Neutron routers.

    [1]https://review.opendev.org/c/openstack/neutron/+/883988

    Closes-Bug: #2053122
    Related-Bug: #2020823
    Change-Id: Iecd5c7a66b16e25e9888dbd1e305586b2be2011e

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/910889

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/911081

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/911081
Committed: https://opendev.org/openstack/neutron-tempest-plugin/commit/9286588fc0c3df370d4b906776432b7f3591e3b6
Submitter: "Zuul (22348)"
Branch: master

commit 9286588fc0c3df370d4b906776432b7f3591e3b6
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Mon Mar 4 20:30:40 2024 +0000

    [OVN] Do not check L3 agents state with ML2/OVN

    With [1], the ML2/OVN L3 plugin will have the "ha" API extension
    enabled. The OVN L3 plugin does not have L3 agents; this check
    should be skipped.

    [1]https://review.opendev.org/c/openstack/neutron/+/910889

    Related-Bug: #2020823
    Change-Id: I09c12ba36b007d4f6fdd3723974ecfe9e4466b72

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/910889
Committed: https://opendev.org/openstack/neutron/commit/b8953b543af0041fa2f3954271d8a8404c9e7a1c
Submitter: "Zuul (22348)"
Branch: master

commit b8953b543af0041fa2f3954271d8a8404c9e7a1c
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Mon Mar 4 10:39:30 2024 +0000

    [OVN] Enable "ha" API flag for OVN routers

    The "ha" API flag is now enabled for the OVN routers. Because of the
    current implementation, this flag must be always "True". When a new
    router is created, this flag is always set. If an OVN router is
    explicitly created or updated with "--no-ha" (ha=False), the server
    will raise an InvalidInput exception.

    Depends-On: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/911081

    Closes-Bug: #2020823
    Change-Id: I60ff33680dd5397a226a9051d51bfb0701f862b5

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 24.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/901513
Committed: https://opendev.org/openstack/neutron/commit/8ff8203fd7133d9092fd70610c19c0dba9e90de2
Submitter: "Zuul (22348)"
Branch: master

commit 8ff8203fd7133d9092fd70610c19c0dba9e90de2
Author: Miguel Lavalle <email address hidden>
Date: Mon Nov 20 19:09:14 2023 -0600

    Enable HA for OVN router flavors

    In this change, we add the ability to create high availability
    user defined router flavors under the ML2/OVN L3 service
    plugin.

    Closes-Bug: #2020823

    Change-Id: I0d26f672d6239d840d3cf817a2553a06ef00a854