Networking
Container Network Interface (CNI) plugins for Kubernetes — providing pod networking, network policy enforcement, encryption, and observability across cluster nodes.
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Topics
| Plugin |
Description |
| Calico |
Pluggable CNI with BGP-based routing, eBPF/iptables/nftables data planes, and rich network policy for Kubernetes, VMs, and bare metal. |
| Cilium |
eBPF-powered CNI with identity-based security policies, Hubble flow observability, Tetragon runtime enforcement, and kube-proxy replacement. |
| Flannel |
Simple, lightweight VXLAN overlay network — the "it just works" CNI for vanilla Kubernetes with minimal operational complexity. |
Comparisons
| Comparison |
Scope |
| CNI Comparison |
Calico vs Cilium vs Flannel — performance, security model, eBPF support, and operational overhead |