So, let's take a step back and find out some more information, because this question is sounding a lot like an XY Problem.
How are the current applications generating their metrics right now? How are you getting the data to create these histograms? On Sun, Aug 7, 2022 at 9:23 AM Johny <[email protected]> wrote: > We are migrating telemetry backend from legacy database to Prometheus and > require estimating percentiles on gauge metrics published by user > applications. Estimating percentiles on a gauge metric in Prometheus is not > feasible and for a number of reasons, client applications will be difficult > to modify to start publishing histograms. > > I am exploring feasibility of creating a histogram in a recording rule in > Prometheus based on the metrics published by users. The partial work put in > so far seems inefficient, also illegible. Is there a recommended approach > to solve this problem? As stated earlier, it will be extremely hard to > solve the problem on the client side and I am looking for a solution within > Prometheus. > > *Current metric is a gauge with with values representing request latency.* > http_duration_milliseconds_gauge{instance="instance1:port1"}[1h] > 1659752188 100 > 1659752068 120 > .. > 1659751708 150 > 1659751588 160 > > *Desired histogram after conversion -* > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=100} 133 > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=120} 222 > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=140} 311 > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=160} 330 > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=180} 339 > http_duration_milliseconds_hist_bucket{instance="instance1:port1", > le=200} 340 > > > > > > > > -- > 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/f95b5512-1c81-4e12-9670-7c7eb0d29f5en%40googlegroups.com > <https://groups.google.com/d/msgid/prometheus-users/f95b5512-1c81-4e12-9670-7c7eb0d29f5en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CABbyFmpjrzMrPO%3DTMTJpgBN5xmsK3mRGNUnaFYunTGN594EcpA%40mail.gmail.com.
