OpenTelemetry can help you! To accomplish your goal of getting telemetry out of applications without touching their code, we recommend that you learn the following:
- What is OpenTelemetry?
- How can I instrument applications without touching their code?
- How can I set up a collector?
- How can I get automation for Kubernetes with the OpenTelemetry Operator?
If you are looking for a set of applications to try things out, you will find our official OpenTelemetry Demo useful!