After enabling tracing I'm getting this error:

{"log.level":"warn","@timestamp":"2022-06-02T16:23:26.596Z","log.logger":"cerbos.otel","message":"OpenTelemetry error","error":"starting span \"ExportMetrics\": unsupported sampler: 0x7df690"}

- any clue?

Hi Rasmus, I am not sure. However, perhaps @Charith (Cerbos) or @Dennis (Cerbos) can help.

It's an annoying but harmless issue in the OpenTelemetry library. I haven't found a solution for it yet. You can safely ignore that log message.

Oh, right. Thanks @Charith (Cerbos). I wasn't seeing any traces in Tempo, so I was wondering if it was related. I'll dig further 😄

Excellent! We have only tested with Jaeger. Did you have to do anything special to send traces to Tempo?

Nope. Tempo supports a bunch of different formats, including Jager

Cool!