I try to summarize several recommendations:
I recommend you to use the Kubernetes Monitoring Statistics Dashboard
You can check there the /metrics scrapping process is working fine. Also have in mind that this integration supports only the counter and gauge Prometheus metric types .
From Data Explorer:
Also in Consumption- Davis data units select Metrics and check the metrics consuming DDU, because OA metrics don't consume DDU's.
Here you can check How to Monitor Prometheus Metrics
I am using node exporter to scrape the metrics from kubernetes to dynatrace. As suggested I tried to look for the data in data explorer for Prometheus metrics as mentioned in your post . I am not receiving any data.
Hope kubernetes monitoring statistics extension has to deploy in the tenant to get that dashboard. Am I Right? If so I tried to upload the extension in the Dynatrace tenant ->Settings- >custom extension section but unable to do so , receiving error like "Could not connect to the server. try again later".
In metrics browser you can check it. metrics are collected by one agent always start with builtin:, other ingested metrics has a different beginning (name), see the consumtion / metrics from demo environment:
I haven't configured prometheus metrics collection form Kubernetes so I do not konow the excat beginning (name) of these kind of metrics.