eBPF in production 5GC — Cilium, observability stacks

Cilium — eBPF for Kubernetes Networking

Cilium is the most successful production eBPF project, now a CNCF graduated project and the default CNI plugin in many large Kubernetes deployments including Google's GKE Dataplane v2. Cilium replaces kube-proxy's iptables-based service load-balancing with eBPF programs that run at XDP or tc layer, slashing connection setup latency and CPU overhead. It implements Kubernetes Network Policy enforcement via eBPF rather than iptables, dramatically improving rule evaluation performance at scale. It also includes a service mesh data plane (replacing sidecars with eBPF redirect) and Cluster Mesh for…