Actually Openstack services configuration can be overriden using many
files:
- /etc/kolla/config/<< service name >>/<< config file >>
- /etc/kolla/config/<< service name >>/<<host>>/<< config file >>
- /etc/kolla/config/global.conf
- /etc/kolla/config/database.conf
- /etc/kolla/config/messaging.conf
Only per-service configuration is actually documented here:
https://github.com/openstack/kolla-ansible/blob/master/doc/advanced-configuration.rst#L164
Allowing to globally modify service configuration can be perform too,
but it can be done in 3 different manners, all not documented:
- /etc/kolla/config/global.conf
- /etc/kolla/config/database.conf
- /etc/kolla/config/messaging.conf
database.conf and messaging.conf seems redundant with global.conf.
In order to simplify codebase it seems logical to remove them.
Documentation has been added for overriding configuration globally and
release note has been added too.
Closes-Bug: #1682479
Change-Id: I5d922dfc0d938173bad34ac64e490b78db1b7e31
a3dfdfc085