Document ability to use config providers inside config

[tigrannajaryan]

I think the Collector does not document anywhere directly that the config providers can be used inside the config. I am referring to the ability to do this:

exporters:
  logging:

receivers: ${file:receivers.yaml}

service:
  pipelines:
    metrics:
      receivers: [otlp]
      exporters: [logging]

Where receivers.yaml is another file:

otlp:
  protocols:
    grpc:
    http:

[bogdandrutu]

Consider to add to https://github.com/open-telemetry/opentelemetry-collector/tree/main/service#readme

[Chinwendu20]

Wow interesting shouldn't this be in the opentelemetry.io repo as well? for users

[jpkrohling]

I can take this one.

[jpkrohling]

open-telemetry/opentelemetry.io#2211