Phoenix itself doesn鈥檛 have telemetry per se, but traces from third-party libraries that it鈥檚 using, i.e. sqlalchemy, starlette, and strawberry, can be exported via setting the following environment variables.
PHOENIX_SERVER_INSTRUMENTATION_OTLP_TRACE_COLLECTOR_GRPC_ENDPOINT=http://localhost:4317
PHOENIX_SERVER_INSTRUMENTATION_OTLP_TRACE_COLLECTOR_HTTP_ENDPOINT=http://localhost:4318/v1/traces