Jaeger tracing Prometheus metrics documentation?

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elu...@gmail.com

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Dec 6, 2018, 5:08:38 AM12/6/18
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Hi,

I can see in the Jaeger documentation, in the "Monitoring" section, information about what port and endpoint that is used as "scraping" endpoint for the agent, collector and query respectively. I have also read the metrics from the collector and can see a number of metrics in Prometheus format as expected. However I cannot find any documentation saying anything about what these metrics are. Some of the metrics are obvious and for some I have found some information in the source code (I have looked at the collector in for example theSpanProcessorMetrics struct in metrics.go ) but not for all metrics.
My question is: Where can I find documentation describing all metrics for all parts of Jaeger? Even if there is no "official" documentation there must be something...

Thanks
Lennart Lund

Gary Brown

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Dec 6, 2018, 5:19:44 AM12/6/18
to elu...@gmail.com, Jaeger Tracing
Hi

Unfortunately we don't have any documentation currently - however it is something we are working on.

The current plan is to add the metric help text into the code as part of the metric declaration - the first step has been merged, awaiting a new release of jaeger-lib.

So once this work is fully integrated into the Jaeger components, the prometheus metrics will include help text that explains the metric.

Regards
Gary


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