Hello community, i have a weird behavior in grafana. I am using prometheus as datasource to query the metrics. when i use node_cpu_seconds_total{} query, i get all the values. But the catch is, when i use it with the rate() function I am not getting any data. what could be the possible issue with this.
PS: Until yesterday the query was working perfectly well (worked for more than 3 months). from today, if i use the rate() function for any of the metrics, it says no data.