The region service client obtains cloud specific update server information from the region service and then uses this information to register the guest instance with the region local update server. The server hosts for the region service are configured in the /etc/regionserverclnt.cfg file.
SUSE-Enceladus/cloud-regionsrv-client
Access the region service to retrieve region local update server information and register the instance
PythonLGPL-3.0