Kubernetes Myth #09: ClusterIP Services Always Use Round-Robin Load Balancing

Myth: Kubernetes ClusterIP Services always distribute traffic using a round-robin algorithm. Reality: The default iptables mode of kube-proxy does not use round-robin. Instead, it uses random probability-based selection for load balancing.

Mar 12, 2025 - 15:40
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Kubernetes Myth #09: ClusterIP Services Always Use Round-Robin Load Balancing

Myth: Kubernetes ClusterIP Services always distribute traffic using a round-robin algorithm.

Reality: The default iptables mode of kube-proxy does not use round-robin. Instead, it uses random probability-based selection for load balancing.