Prometheus as remote-write-receiver Encountered error 204 No Content

[valdemarpavesi]

Description

Prometheus as remote-write-receiver
url: http://localhost:9090/api/v1/write
Return success code "204 No Content"

but it will be considered as an error for (pusher, err := cortex.InstallNewPipeline)

Environment

• OS: Linux
• Architecture: [x86_64]
• Go Version: [go1.16.2]
• go.opentelemetry.io/otel v0.20.0

Steps To Reproduce

1. run example:

https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/exporters/metric/cortex/example

2. deploy prometheus

docker run -u root -d -p 9090:9090 \ -v $PWD/prometheus.yml:/etc/prometheus/prometheus.yml \ --name prometheus \ prom/prometheus --config.file=/etc/prometheus/prometheus.yml --enable-feature=remote-write-receiver --enable-feature=exemplar-storage

3. config.yml opentelemtry to url: http://localhost:9090/api/v1/write

Expected behavior

fmt.Println("Encountered error: ", err.Error())

it will return: Encountered error 204 No Content

[valdemarpavesi]

to reproduce the problem:
https://www.katacoda.com/va/scenarios/opentelemetry-cortex

[MrAlias]

Closing, stale. The cortex exporter and example were remove in https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.5.0