Cilium vs Spiderpool

Cilium is an open-source, cloud-native system for providing, securing, and observing network connectivity between workloads using eBPF. Its networking capabilities include CNI, Layer 4 load balancing, Cluster Mesh, kube-proxy replacement, BGP, service mesh, Gateway API, IPv6, host firewall, and ingress. Network policies can enforce identity-aware rules from L3 through L7, including DNS- and HTTP-aware filtering. Security features include runtime protection and transparent encryption of managed host and endpoint traffic using IPsec, WireGuard, or ztunnel; ztunnel support is marked beta. For visibility, Cilium lists service maps, metrics and tracing export, network flow logs, and protocol visibility. Hubble, built on Cilium and eBPF, provides visibility into service communication and behavior. Documentation describes Prometheus and Grafana integrations and Kubernetes support for services including GKE, AKS, EKS, OpenShift, RKE, k3s, and Alibaba ACK. Its container image requires AMD64 or AArch64 hosts running Linux kernel 5.10 or later, or an equivalent kernel such as 4.18 on RHEL 8.10. For environments above 500 nodes, the quick installation guide directs readers to large-environment guidance or specific datapath modes.

Spiderpool is a free, open-source Kubernetes networking solution for underlay networking and RDMA on bare metal, virtual machines, and public clouds. Its CRD-based IPAM handles dual-stack networks, shared or exclusive address pools, and static addresses for stateful applications. The project supports Macvlan, IPvlan, and SR-IOV, while its IPAM can pair with compatible CNIs such as Calico and Weave. Pods may use multiple underlay interfaces or combine underlay and overlay interfaces, with policy routing across them. Documented connectivity includes Pod-to-host access, conflict detection, gateway checks, and service access through kube-proxy or an eBPF replacement. RDMA works with RoCE and InfiniBand in shared or exclusive device modes. Use cases include storage, middleware, observability, AI training, latency-sensitive workloads, and separate bandwidth needs. It supports AMD64 and ARM64 nodes, with SpiderSubnet requiring Kubernetes 1.21 or later. Spiderpool is Apache 2.0 licensed and a CNCF sandbox project.