For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:-miska-:loki/openSUSE_Tumbleweed/home:-miska-:loki.repo
zypper refresh
zypper install grafana
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:-miska-:loki/15.6/home:-miska-:loki.repo
zypper refresh
zypper install grafana
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:-miska-:loki/15.5/home:-miska-:loki.repo
zypper refresh
zypper install grafana