We recently migrated our cluster from 18.2.4 to 19.2.0 and started having issues with Grafana. Ceph gives out the warning "CEPHADM_CERT_ERROR: Invalid grafana certificate on host cc-1: Invalid certificate key: [('PEM routines', '', 'no start line')]. Looking at the certificates they contain a line '# generated by cephadm' and are not the certificates we stored in the config, e.g. 'mgr/cephadm/cc-1/grafana_crt'. After some investigation we found that there was a change to how certificates are stored. Yet I could find no documentation on how to setup per hosts certificates with the new way. The commit that changed the certificate store is https://github.com/ceph/ceph/commit/bb7e715320e41f5d6b6291769e2b6d230eec74cc Maybe anyone can point us in the right direction on how to get our own certs back into Grafana. -- Thorsten Fuchs abaut GmbH Agnes-Pockels-Bogen 1, 80992 München