Hi Julien, Thanks for responding. I'm using the following library: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-exporter-prometheus
I wanted to add support for exemplars for this library so for now I'm just modifying this method (https://github.com/open-telemetry/opentelemetry-js/blob/853fcb94cd96cea0bd1af18cddb355345f76adad/packages/opentelemetry-exporter-prometheus/src/PrometheusSerializer.ts#L103) to return a plain string compatible with extended exposition format. Is changing the text format a configuration change? Sandes On Wednesday, March 31, 2021 at 3:41:47 PM UTC-4 Julien Pivotto wrote: > On 31 Mar 10:22, 'Sandes de Silva' via Prometheus Users wrote: > > Hi, > > > > I'm trying to use this experimental feature and having no luck. Has > anyone > > here tried it? Is the usage documented anywhere? Here is my setup: > > > > Prom version: built locally off the main branch using docker > > (rev: 763a0d805c8f7f6e2cbd49c4c2c5e250e9dc5cd2) > > > > CLI options: `--enable-feature=exemplar-storage` and > > `--storage.exemplars.exemplars-limit=100000` along with the default > options > > provided by CMD directive on the Dockerfile > > > > Metrics: > > # HELP request_total Counts total number of requests > > # TYPE request_total counter > > request_total{url="/collection/"} 3 1617208935086 # > > {trace_id="234234234234234234234"} 1 > > request_total{url="/insert/"} 3 1617208935091 # > > {trace_id="234234234234234234234"} 1 > > request_total{url="/get/"} 3 1617208935096 # > > {trace_id="234234234234234234234"} 1 > > > > Seems like that's all that is required when I read the source code. > However > > I'm still getting the following error: > > level=debug ts=2021-03-31T17:21:48.016Z caller=scrape.go:1149 > > component="scrape manager" scrape_pool=node > > target=http://192.168.1.198:9464/metrics msg="Append failed" > err="expected > > next entry after timestamp, got \"MNAME\"" > > Hello, > > > It seems that you are using the Prometheus text format instead of > Openmetrics. > > Which library are you using to produce this? We recommend to use the > official Prometheus client libraries to produce openmetrics format. > > > > > -- > > 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/447dd8f6-e2a7-4533-a95e-089d6db798b0n%40googlegroups.com > . > > > -- > Julien Pivotto > @roidelapluie > -- 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/fc99c327-5af7-453a-bd8b-0a3cebc19e2bn%40googlegroups.com.

