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Troubleshooting Django App Instrumentation with Signoz

TLDR tim encountered issues instrumenting a Django app with Signoz. tim resolved the problem by identifying the need for a client to forward content to Signoz.

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May 23, 2023 (6 days ago)

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tim

08:20 PM

I managed to get the node-app example working with signoz, but for some reason instrumenting my django app is beyond my ability

May 24, 2023 (5 days ago)

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Vishal

09:13 AM

Did you follow the Django instrumentation tutorial?
https://signoz.io/docs/instrumentation/django/
Let us know if you face any problems

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tim

01:40 PM

I've been following the django opentelemetry example instructions- these are also very helpful

01:41

tim

01:41 PM

Currently, it looks like my issue is that when I set up telemetry, I somehow default to the proxy tracer, which has a real_tracer as None and only contains the noop tracer

01:42

tim

01:42 PM

The entirety of my setup is stuffed into the main.py file, rather than handling env vars in another layer, so it should be easy to debug:

Image 1 for The entirety of my setup is stuffed into the main.py file, rather than handling env vars in another layer, so it should be easy to debug:

01:44

tim

01:44 PM

I successfully trigger traces on requests to django, however the code in opentelemetry/exporter/otlp/proto/http/traceexporter/_init::OTLPSpanExporter.export looks like it is never called. This is consistent with what I see in Signoz- nada

01:57

tim

01:57 PM

Tried replacing the ProxyTraceProvider with the TraceProvider, which got me a real trace provider! Now I am looking at an empty list of span processors

01:59

tim

01:59 PM

Is there a bunch of magic that was supposed to happen by the opentelemetry bootstrap process that just failed to occur in my project? It's a django project but it has plenty of frontend code, I could see an automatic system getting confused and assuming this is a node project

02:10

tim

02:10 PM

The instructions I've been following are here, which explains a lot: https://github.com/open-telemetry/opentelemetry-python/tree/main/docs/examples/django

It looks like this is an example of setting up django for a proxy trace setup, which means to exporters and the proxy tracer, and without a client to do the forwarding nothing happens

02:11

tim

02:11 PM

So if I want to use the django instrumentor, I need to have my own client to forward content to signoz

02:12

tim

02:12 PM

Classic mistake of drifting away from signoz documentation (as the tutorial you posted has key issues for my use case) into the tutorials of a dependency library, which is agnostic to the endpoint being used.

09:26

tim

09:26 PM

It lives!

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