쿠버네티스 네트워킹을 위한 컨테이너 네트워크 인터페이스 성능 분석

초록

This paper quantitatively compares and analyzes the performance of various Container Network Interfaces (CNIs) for Kubernetes networking based on different protocols. To achieve this, we design and implement a testbed to evaluate four CNIs—Calico, Flannel, Cilium, and Antrea—by applying different tunneling methods, encrypted communication, and network traffic management techniques, resulting in 14 unique combinations. Performance analysis is conducted by measuring key metrics, including TCP and UDP throughput, TCP and UDP latency, HTTP latency, data transfer volume, and network timeout occurrences. Based on these experimental results, We establish criteria for selecting the most suitable CNI, considering workload characteristics and performance requirements.

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