Init script for glance-api ignores additional config files

[Christian Rohmann]

The init script at /etc/init.d/glance-api (likely created by the openstack-pkg-tools) uses the

```
PROJECT_NAME=glance
NAME=${PROJECT_NAME}-api
CONFIG_FILE=/etc/${PROJECT_NAME}/${NAME}.conf
```

to later add the daemon-arg ``--config-file /etc/glance/glance-api.conf``

This unfortunately causes Glance (or oslo_config in particular, see https://docs.openstack.org/oslo.config/latest/configuration/options.html#default) to ignore all other config files.
While multiple config files might not be necessary per se, Glance uses them at least since https://review.opendev.org/c/openstack/glance/+/527635 and the user documentation talks about placing various settings into ``glance-image-import.conf`` (https://docs.openstack.org/glance/latest/admin/interoperable-image-import.html#configuring-the-web-download-method)

This issue of using config-file vs. config-dir has been "fixed" for the DevStack (https://review.opendev.org/c/openstack/devstack/+/625628) and there were other observations of a similar issue in e.g. https://bugs.launchpad.net/glance/+bug/1775782.

With multiple config files being actively used by glance switching to ``config-dir`` or at least allow adding multiple config files (see default list: https://opendev.org/openstack/glance/src/branch/master/glance/common/wsgi_app.py#L37) is necessary.

[Corey Bryant (corey.bryant)]

Christian, Thanks for reporting this. I've pushed a fix for this to the repo and it will get picked up on the next upload for yoga.

[Christian Rohmann (christian-rohmann)]

Thanks Corey for picking this up so quickly. Do you mind sharing a link to where/what was changed?
Will there be any backporting for packaged of current OpenStack releases if I may ask?

[Christian Rohmann (christian-rohmann)]

I suppose it's https://git.launchpad.net/~ubuntu-openstack-dev/ubuntu/+source/glance/commit/?id=39ce4e7eafc33ef2ddc61c338230b4afe1eeb79b

[Launchpad Janitor (janitor)]

This bug was fixed in the package glance - 2:23.0.0+git2022011216.502fa0ffc-0ubuntu1

---------------
glance (2:23.0.0+git2022011216.502fa0ffc-0ubuntu1) jammy; urgency=medium

  * d/glance-common.install, d/glance-api.init.in: Install
    glance-image-import.conf.sample and add --config-dir=/etc/glance/
    to glance-api init script (LP: #1955022).
  * New upstream snapshot for OpenStack Yoga.
  * d/control, d/rules: Bump debhelper compat to 13.

 -- Corey Bryant <email address hidden> Wed, 12 Jan 2022 16:47:24 -0500

[Corey Bryant (corey.bryant)]

This bug was fixed in the package glance - 2:23.0.0+git2022011216.502fa0ffc-0ubuntu1~cloud0
---------------

 glance (2:23.0.0+git2022011216.502fa0ffc-0ubuntu1~cloud0) focal-yoga; urgency=medium
 .
   * New upstream release for the Ubuntu Cloud Archive.
 .
 glance (2:23.0.0+git2022011216.502fa0ffc-0ubuntu1) jammy; urgency=medium
 .
   * d/glance-common.install, d/glance-api.init.in: Install
     glance-image-import.conf.sample and add --config-dir=/etc/glance/
     to glance-api init script (LP: #1955022).
   * New upstream snapshot for OpenStack Yoga.
   * d/control, d/rules: Bump debhelper compat to 13.