openstack-manuals/doc/config-reference/source/compute/database-connections.rst

Database configuration

You can configure OpenStack Compute to use any SQLAlchemy-compatible database. The database name is nova. The nova-conductor service is the only service that writes to the database. The other Compute services access the database through the nova-conductor service.

To ensure that the database schema is current, run the following command:

# nova-manage db sync

If nova-conductor is not used, entries to the database are mostly written by the nova-scheduler service, although all services must be able to update entries in the database.

In either case, use the configuration option settings documented in the table nova-database to configure the connection string for the nova database.