If your openstack using multiple region, and each region have its own Yuyu server, you can specify Yuyu server URL for each region.
To do that, you can add `YUYU_URL_REGION` to horizon `local_settings.py`
`YUYU_URL_REGION` is a list of tuples which define a mapping from region name (as in horizon `AVAILABLE_REGIONS`) to Yuyu URL for each. The tuple format is ***('{{ region_name }}', 'http://{yuyu_url}')***.