Murano-dashboard does not need to be configured, but we need to set up proper OPENSTACK_HOST variable in the OpenStack dashboard configuration file, which resides at /etc/openstack-dashboard directory. It should point to the OpenStack controller node.

…
# optional, but sometimes very useful to set DEBUG to ‘True’
DEBUG = True
...
OPENSTACK_HOST =
    “openstack_controller_address”
...