cilium / cilium

git clone https://github.com/cilium/cilium.git v1.20.3 · 8d ago

eBPF-based networking, security, and observability layer for Kubernetes and other container platforms.

Why you might care

Replaces kube-proxy with eBPF hash-table load balancing and enforces L3-L7 network policies using identity-based security decoupled from IP addresses. Adds deep network visibility, ingress/egress gateways, bandwidth management, and service mesh features.

Alternatives

CalicoIstioLinkerdFlannelkube-proxy

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stars, 24h · #63,852

+52

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4.2k

forks · 1.1k open issues

Star history (as recorded here)

2026-10-20 · 25,691 ★ 2026-10-24 · 25,709 ★

LanguageGo

LicenseApache-2.0

Created2015-12-16 (10y ago)

Last pushtoday

Watchers312

OwnerOrganization

Seen on GitHub Trending

2026-10-23 — #13 weekly in go · +52 ★

GitHub topics

bpf cncf cni containers ebpf k8s kernel kubernetes kubernetes-networking loadbalancing monitoring networking observability security troubleshooting xdp

README

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