This adds a keycloak server so we can start experimenting with it.
It's based on the docker-compose file Matthieu made for Zuul
(see https://review.opendev.org/819745 )
We should be able to configure a realm and federate with openstackid
and other providers as described in the opendev auth spec. However,
I am unable to test federation with openstackid due its inability to
configure an oauth app at "localhost". Therefore, we will need an
actual deployed system to test it. This should allow us to do so.
It will also allow use to connect realms to the newly available
Zuul admin api on opendev.
It should be possible to configure the realm the way we want, then
export its configuration into a JSON file and then have our playbooks
or the docker-compose file import it. That would allow us to drive
change to the configuration of the system through code review. Because
of the above limitation with openstackid, I think we should regard the
current implementation as experimental. Once we have a realm
configuration that we like (which we will create using the GUI), we
can chose to either continue to maintain the config with the GUI and
appropriate file backups, or switch to a gitops model based on an
export.
My understanding is that all the data (realms configuration and session)
are kept in an H2 database. This is probably sufficient for now and even
production use with Zuul, but we should probably switch to mariadb before
any heavy (eg gerrit, etc) production use.
This is a partial implementation of https://docs.opendev.org/opendev/infra-specs/latest/specs/central-auth.html
We can re-deploy with a new domain when it exists.
Change-Id: I2e069b1b220dbd3e0a5754ac094c2b296c141753
Co-Authored-By: Matthieu Huin <mhuin@redhat.com>
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