In that doc/guide:

https://docs.redhat.com/en/documentation/red_hat_openstack_platform/17.1/html-single/framework_for_upgrades_16.2_to_17.1/index#upgrading-with-external-ceph-deployments_external-ceph-deployments

The 2 links to Ceph Upgrade docs under 'Chapter 3. Upgrading with external Ceph deployments' are broken:

Red Hat Ceph Storage 5 Upgrade Guide

Currently links to: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/17.1/html/red_hat_ceph_storage/5/html-single/upgrade_guide/index

Should probably link to: https://docs.redhat.com/en/documentation/red_hat_ceph_storage/5/html-single/upgrade_guide/index

Red Hat Ceph Storage 6 Upgrade Guide

Currently links to: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/17.1/html/red_hat_ceph_storage/6/html-single/upgrade_guide/index

Should probably link to: https://docs.redhat.com/en/documentation/red_hat_ceph_storage/6/html-single/upgrade_guide/index

Unless we expect to have a Ceph guide under rhosp itself (unlikely?). Then would need to find the accurate links.