Nova defaults [database]connection to local sqlite database while the config doc says it is defaulted to None

[Balazs Gibizer]

Config doc: https://docs.openstack.org/nova/latest/configuration/config.html#database.connection
Code: https://github.com/openstack/nova/blob/dc93e3b510f53d5b2198c8edd22528f0c899617e/nova/conf/database.py#L113

This is a problem as nova-compute service should not have any DB configured ever.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/762319

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/762319
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=798f06abb2e5e9831e8bad11ff3258d5b51d1547
Submitter: Zuul
Branch: master

commit 798f06abb2e5e9831e8bad11ff3258d5b51d1547
Author: Balazs Gibizer <email address hidden>
Date: Wed Nov 11 10:50:44 2020 +0100

    Remove [database]connection defaulting

    The config documentation says that the [database]connection config is
    defaulted to None but in reality the nova code defaulted it to a local
    sqlite database. This is clearly wrong as:

    * Nobody wants to run nova with sqlite outside of a test env

    * The nova-compute service should never have DB credentials configured

    So this patch makes sure that nova does not change the default of this
    config option.

    Change-Id: I81560b3ba3dbaccdb90b32ed1a3c4ffd8a6283a6
    Closes-Bug: #1903824

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 23.0.0.0rc1 release candidate.