feat(event-gateway): OTEL how-to #3604
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(`event-gateway-quickstart`) as the prometheus' target
The name only works for Jaeger, looks like for the metrics the prefix `kong_keg` is hardcoded in the data plane, e.g. in Prometheus you'll see `kong_keg_kafka_response_processing_duration_ms`.
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we can ignore the missing redirect on this one, it wasn't published :) |
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To do: add a sample trace to look at in Jaeger, maybe a screenshot? |
lmilan
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Dec 17, 2025
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Left a couple of suggestions, otherwise it looks good!
I did get an error in the EGW logs, it didn't seem to impact the rest of the how-to but it might be worth looking into:
2025-12-17T17:21:29.133340Z ERROR OpenTelemetry.Traces.BatchProcessor ThreadId(14) opentelemetry_sdk: /usr/local/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/opentelemetry_sdk-0.31.0/src/trace/span_processor.rs:512: name="BatchSpanProcessor.ExportError" error="Operation failed: status: 'The service is currently unavailable', self: \"dns error\""
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| tls: | ||
| enabled: false |
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Suggested change
| tls: | |
| enabled: false | |
| tls: | |
| enabled: false | |
| insecure_allow_anonymous_virtual_cluster_auth: true |
| Let's go to Jaeger to see we can see the full trace generated by {{site.event_gateway_short}}. | ||
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| 1. In your browser, open the Jaeger search dashboard at `http://localhost:16686/search`. | ||
| 1. Search for `keg`. |
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| 1. Search for `keg`. | |
| 1. In the **Service** dropdown list, select `eventgw`. | |
| 1. Click **Find Traces**. |
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Search didn't work for me, I got an invalid syntax error
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Description
Fixes #3251
Add two pages:
To do:
Preview Links
https://deploy-preview-3604--kongdeveloper.netlify.app/how-to/event-gateway/configure-observability-with-otel/