FYI: I've found a solution for the Grafana Certificate. Just run the following commands: 1. ceph config-key set mgr/cephadm/grafana_crt -i <cert> ceph config-key set mgr/cephadm/grafana_key -i <key> 2. ceph orch redeploy grafana 3. ceph config set mgr mgr/dashboard/GRAFANA_API_URL https://ceph01.domain.tld:3000