Nova uses deprecated service URL for Neutron

[Joseph M]

Operating system distribution and version: CentOS 7.6.1810
Kolla-Ansible package version: 8.0.0.0rc1
install_type (source/binary) and distribution from /etc/kolla/globals.yml: stein source
Are you using official images from Docker Hub or self built? Official

nova.conf currently uses the deprecated url= [neutron] option:

https://opendev.org/openstack/kolla-ansible/src/branch/stable/stein/ansible/roles/nova/templates/nova.conf.j2#L142

It looks like it was deprecated in Queens in favor of endpoint lookup in the catalog:
https://docs.openstack.org/nova/stein/configuration/config.html#neutron.url

This works fine if you only have a single region but in a multiple region environment it can cause Nova to use the wrong region. In particular I discovered this while live migrating and it failed to find the port on the destination server.

The fix I confirmed that works is to simply add an override to specify the region name:

/etc/kolla/config/nova.conf:
[neutron]
region_name = {{region_name}}

Before fix:
(openstack) server migrate --live node1 --wait e9002be1-d531-40e2-8583-fb276983996a
Migration pre-check error: Binding failed for port 6d477b7f-310f-4a6c-8a6a-12eb6d53fa1d, please check neutron logs for more information. (HTTP 400) (Request-ID: req-7d29c01f-fbf4-406d-aede-f3f45fd6e62c)

After fix:
(openstack) server migrate --live node2 --wait e9002be1-d531-40e2-8583-fb276983996a
Complete

Ideally the [neutron] section would be updated to specify all the the endpoint lookup options to match other Kolla service configurations.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/679488

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/679488
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=096555dcf2db9986572ebee85efc395e5f59fbe8
Submitter: Zuul
Branch: master

commit 096555dcf2db9986572ebee85efc395e5f59fbe8
Author: Joseph M <email address hidden>
Date: Fri Aug 30 13:14:59 2019 -0400

    [nova] Fix service catalog lookup of Neutron endpoint

    nova.conf currently uses the [neutron] "url" parameter which has been
    deprecated since 17.0.0. In multi-region environments this can
    cause Nova to look up the Neutron endpoint for a different region.
    Remove this parameter and set region_name and
    valid_interfaces to allow the correct lookup to be performed.

    Change-Id: I1bbc73728439a460447bc8edd264f9f2d3c814e0
    Closes-Bug: #1836952

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/stein
Review: https://review.opendev.org/680359

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/rocky
Review: https://review.opendev.org/680360

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/queens
Review: https://review.opendev.org/680361

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/680359
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=fee1a080713f66b8331b7cd1dd1902c7e3615ebf
Submitter: Zuul
Branch: stable/stein

commit fee1a080713f66b8331b7cd1dd1902c7e3615ebf
Author: Joseph M <email address hidden>
Date: Fri Aug 30 13:14:59 2019 -0400

    [nova] Fix service catalog lookup of Neutron endpoint

    nova.conf currently uses the [neutron] "url" parameter which has been
    deprecated since 17.0.0. In multi-region environments this can
    cause Nova to look up the Neutron endpoint for a different region.
    Remove this parameter and set region_name and
    valid_interfaces to allow the correct lookup to be performed.

    Change-Id: I1bbc73728439a460447bc8edd264f9f2d3c814e0
    Closes-Bug: #1836952
    (cherry picked from commit 096555dcf2db9986572ebee85efc395e5f59fbe8)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/680360
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=12147aea1aefab6552da0c3576c40a378edeed2c
Submitter: Zuul
Branch: stable/rocky

commit 12147aea1aefab6552da0c3576c40a378edeed2c
Author: Joseph M <email address hidden>
Date: Fri Aug 30 13:14:59 2019 -0400

    [nova] Fix service catalog lookup of Neutron endpoint

    nova.conf currently uses the [neutron] "url" parameter which has been
    deprecated since 17.0.0. In multi-region environments this can
    cause Nova to look up the Neutron endpoint for a different region.
    Remove this parameter and set region_name and
    valid_interfaces to allow the correct lookup to be performed.

    Change-Id: I1bbc73728439a460447bc8edd264f9f2d3c814e0
    Closes-Bug: #1836952
    (cherry picked from commit 096555dcf2db9986572ebee85efc395e5f59fbe8)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/680361
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=b8522e4093fa43415ec6ae3092cb18face64d215
Submitter: Zuul
Branch: stable/queens

commit b8522e4093fa43415ec6ae3092cb18face64d215
Author: Joseph M <email address hidden>
Date: Fri Aug 30 13:14:59 2019 -0400

    [nova] Fix service catalog lookup of Neutron endpoint

    nova.conf currently uses the [neutron] "url" parameter which has been
    deprecated since 17.0.0. In multi-region environments this can
    cause Nova to look up the Neutron endpoint for a different region.
    Remove this parameter and set region_name and
    valid_interfaces to allow the correct lookup to be performed.

    Change-Id: I1bbc73728439a460447bc8edd264f9f2d3c814e0
    Closes-Bug: #1836952
    (cherry picked from commit 096555dcf2db9986572ebee85efc395e5f59fbe8)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 6.2.3 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 9.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 7.2.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 8.1.0 release.