Gfilui

I've deployed an openstack system using juju. Several of the units are saying "Incomplete relations: database." The debug logs for the cinder service, for example, say:

unit-cinder-0: 19:55:41 INFO unit.cinder/0.juju-log database relation's interface, shared-db, is related awaiting the following data from the relationship: database_password, database_host.

What does this mean, exactly? It sounds like the cinder charm needs to know the hostname and password for the database. But I thought it would learn that through its relation to mysql. Am I supposed to configure the database_host and database_password parameters somewhere? If so, where? They're not part of the charm's config.

Here's a small snippet of juju status, showing the unit status and relations. You can see that mysql is up and running, and a relation exists between cinder and mysql.

cinder/0* waiting idle 7 30.111.1.208 8776/tcp Incomplete relations: database
hacluster/5 active idle 30.111.1.208 Unit is ready and clustered
mysql/1* active idle 0/lxd/3 30.111.1.202 3306/tcp Ready
hacluster/1 active idle 30.111.1.202 Unit is ready and clustered

hacluster:ha cinder:ha hacluster subordinate
keystone:identity-service cinder:identity-service keystone regular
mysql:shared-db cinder:shared-db mysql-shared regular
rabbitmq-server:amqp cinder:amqp rabbitmq regular

For more detail, I've uploaded the output of "juju status" and "juju show-machines"