Role of eBPF in Kubernetes Networking and Security
summary
eBPF runs inside the kernel to speed packet processing, enable on‑the‑fly kernel‑level load balancing and service discovery, and enforce pre‑processing security checks and network ACLs; observability comes from real‑time connection logs and metrics. Demo uses Cilium network policy to allow a b‑box to port 80 and deny an unauthorized box, but a policy label misconfiguration lets the deny rule fail. Challenges include a steep low‑level learning curve, compilation/memory overhead, and risk of kernel crashes.
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chapters (10)
- 0:00Introduction
- 1:15What is BPF
- 3:30eBPF architecture
- 6:22eBPF in Kubernetes networking
- 8:04eBPF for security and observability
- 9:09eBPF challenges
- 11:56eBPF best practices
- 12:39Cilium tool
- 14:30Demo: Cilium Network Policies
- 20:22Conclusion
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