Profile every process on a node with one DaemonSet and no code changes. How eBPF profilers work, which tool to pick, a tested Parca deployment, and the privileges, storage and trace-linking limits you need to plan around.

For profiling and network observability on a modern Linux kernel, yes. Cilium, Parca, Pixie and Tetragon all run in production. The caveats are kernel version and BTF support, the privileges the agent needs, and application-level tracing, which still trails what an SDK gives you.

When a request crosses ten services, you get ten log streams that share nothing but a timestamp you can't trust. How to collect them on every node, carry the trace ID through, ship them through the OpenTelemetry Collector, and notice when lines go missing.