rpm --import https://packagecloud.io/gpg.key

[grafana]
name=grafana
baseurl=https://packages.grafana.com/oss/rpm-beta
repo_gpgcheck=1
enabled=1
gpgcheck=1
gpgkey=https://packages.grafana.com/gpg.key https://grafanarel.s3.amazonaws.com/RPM-GPG-KEY-grafana
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt

yum install grafana -y