• Added support for exporting OpenTelemetry traces and metrics over GRPC. A new environment variable OTEL_EXPORTER_OTLP_PROTOCOL lets you switch between http/protobuf and grpc.
  • Breaking change: the default OpenTelemetry exporter has changed from http/protobuf sending to http://localhost:4318 to grpc sending to http://localhost:4317. To return to the old defaults, set the following environment variables:
    • OTEL_EXPORTER_OTLP_PROTOCOL="http/protobuf"
    • OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4318"