OpenTelemetry Collector Tracing not working

[woha]

I've set up my otel-collector as described in the documentation: Tracing from OpenTelemetry.
But the otel-collector fails at startup with: error: invalid configuration: exporters::otlp/seq: address localhost/ingest/otlp: missing port in address.
From the Seq logs I can see that it's listening on 5341 and 45341 Seq listening on ["http://localhost/", "https://localhost/", "http://localhost:5341/", "https://localhost:45341/"], but when i try to configure the collector for one of those ports, it fails with: error: invalid configuration: exporters::otlp/seq: invalid port "45341/ingest/otlp".

This is my otel-collector exporters config:

  otlp/seq:
    endpoint: https://localhost:45341/ingest/otlp
    headers:
      X-Seq-ApiKey: "..."

What is the correct way to set up the collector?

[KodrAus]

Hi @woha 👋

It looks like the otlp exporter just does gRPC, which only uses the hostname and port. The path is handled by gRPC itself.

If you'd like to configure your collector to export via HTTP, you can use the otlphttp exporter: https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/otlphttpexporter/README.md

[woha]

Hi @KodrAus

and thank you very much.
This was exactly the issue. I was using the otlp exporter with gRPC.
I've changed it to the otlphttp exporter now and everything works perfectly fine.

Thank you again!