安装
https://grafana.com/docs/installation/docker/
docker run -d -p 3000:3000 grafana/grafana
rpm包：
wget https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-4.6.2-1.x86_64.rpm
yum localinstall grafana-4.6.2-1.x86_64.rpm
默认密码 admin admin
2.浏览
3.添加数据源
5.添加模板
