Zero-Code OpenTelemetry: Instrumenting a Real Distributed System
You can add full distributed tracing, metrics, and logs to a Python microservices app without touching application code — install the OpenTelemetry distro, bootstrap the instrumentors, and run each service under the opentelemetry-instrument wrapper. Here is exactly how we did it for Fathom, a nine-service bank, plus the one gotcha that keeps logs from showing up.
