It's possible to get Ceph Metrics working with RHOSP by running it as an instance in the overcloud  and it should be possible to get Ceph Dashboard working with RHOSP by modifying the same procedure to use playbooks which deploy Ceph Dashboard.
However, it would be better if the process to get Ceph Dashboard working with RHOSP didn't require the user to take as many manual steps in the overcloud. Ideally, users could treat CephMetrics as a composable service the same way they treat other composable services. In other words, if OSPd's roles_data.yaml had OS::TripleO::Services::CephDashboard the same way it has OS::TripleO::Services::CephOSD.
This is an RFE to enable the improved scenario described above and it depends on leveraging new roles in ceph-ansible which would enable it to deploy ceph-dashboard as tracked in Ceph BZ1563009.
*** Bug 1724198 has been marked as a duplicate of this bug. ***
*** Bug 1475556 has been marked as a duplicate of this bug. ***
Due to some unresolved dependencies in RHCSv4, this RFE does not meet the Tech Preview quality criterias and therefore closed deferred.
The new RFE to track full support is https://bugzilla.redhat.com/show_bug.cgi?id=1790754
Target is OSP 16.0.2 assuming the RHCS dependencies are solved by that time.
To customers and partners: Please reach out to your account/partner team for more details.
To RH internal: Please reach out to RHOS team for more details.