Hello all!
I’m new here and it is my first conntact with grafana, so please forgive me my mistakes 
I’m testing RedHat Ceph storage, I’ve got 3 physical nodes (with mons, osds, mgrs, mdss, rgws) + one admin node. Everything was installed by ansible + docker. Today I tried to install CEPH grafana dashboard, everything went good, but first of all I could access the grafana:3000 (I had to install firewalld, because I installed everything with default firewall settingss, so I also open 3000 port). I can access dashboard, but it is empty, no data. Any ideas? Thank you in advance!
