Subscribed field-medium as glance-simplestreams-sync usage is mentioned in the official guide for using octavia-diskimage-retrofit:
https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/app-octavia.html#amphora-image
Subscribed field-medium as glance- simplestreams- sync usage is mentioned in the official guide for using octavia- diskimage- retrofit:
https:/ /docs.openstack .org/project- deploy- guide/charm- deployment- guide/latest/ app-octavia. html#amphora- image