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Kube-proxy is a networking component in Kubernetes that manages network rules to facilitate communication between services and pods across nodes in a cluster. It relies on iptables or IPVS for L3/L4 load balancing, which can become a performance bottleneck in large scale Kubernetes clusters.
Cilium offers a high-performance, scalable alternative by leveraging eBPF to replace kube-proxy entirely. This talk provides an overview of how Cilium's datapath implements ClusterIP, NodePort, and LoadBalancer services using eBPF. By the end of the talk, the audience will understand the core principles behind Cilium's eBPF-based service handling and gain the fundamental knowledge needed to apply it in production environments.
