With these two metrics and label combinations you can only calculate ratios against the total number of requests. For answering questions like "What is the percentage of errors for app `service` against all it's request" you will have to improve the instrumentation. A counter for the number of requests by `app` would be helpful.
You are dealing with a many-to-many matching which must be explicit. So use `group_left` or `group_right`. This should work after adapting the metric names: ``` sum(rate(http_request_errors_total[5m])) / ignoring (app, pid, status_code) group_left sum(rate(http_requests_total[5m])) ``` [email protected] schrieb am Mittwoch, 21. Oktober 2020 um 13:21:28 UTC+2: > Sorry, the labels for the errors metric are [app, pid, status_code] > whilst the labels for the total requests metric are [site, method] thanks > very much for your help, I'm having a look at label joining now although > I'm not sure if it's going to allow me to do what I want to do! > > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/4758df7c-21bf-43c8-afbe-9d4b7e912329n%40googlegroups.com.
