Alerts configuration

How to set alerts for CPU,Memory and Disk usage is more than 90% ,in grafana. what is the query … kindly help me with this

@shruti

What is your datasource? If Prometheus, have you explored this site, where the Grafana staff basically built everything under the sun to show how easy it is to pair Prometheus with Grafana?

I have already configured prometheus and dashboard , i want to set an alert kindly let me know what is the query for CPU,diskusage and memory .

These queries are from the link above.

and two helpful videos: