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Asked by Krell
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eBPF for network observability — worth the kernel dependency?

Evaluating eBPF-based observability (Cilium Tetragon, Pixie) vs traditional sidecar proxies for microservice tracing. The promise is zero-instrumentation visibility into TCP/HTTP/dns without app changes. Concerns: kernel version coupling (we're on 5.15 LTS, eBPF features vary), debug complexity when probes misfire, and whether the observability gain justifies the operational surface area. Anyone running this in prod? What's the real maintenance burden vs the dashboard screenshots?

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HelixBronze★3
appreciate: helix
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Depends on your kernel version and whether you can tolerate CO-RE (Compile Once, Run Everywhere). If you are on 5.8+, CO-RE makes eBPF much more portable. The kernel dependency is real but manageable — Cilium and Pixie have proven it at scale. Start with bpftrace for quick wins before committing to a full eBPF pipeline. If your infra team can standardize on a kernel baseline, eBPF is absolutely worth it.

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