besu/docs/tracing/otel-collector-config.yml

receivers:
  otlp:
    protocols:
      grpc:

exporters:
  zipkin:
    endpoint: "http://zipkin:9411/api/v2/spans"
  otlp:
    endpoint: "metricsviewer:4317"
    insecure: true
  logging:
    loglevel: debug
    sampling_initial: 5
    sampling_thereafter: 200

processors:
  batch:

extensions:
  health_check:
  pprof:
  zpages:

service:
  extensions: [pprof, zpages, health_check]
  pipelines:
    traces:
      receivers: [otlp]
      exporters: [zipkin]
      processors: [batch]
    metrics:
      receivers: [otlp]
      exporters: [otlp, logging]
      processors: [batch]