~/lightning

Lightning Talk: High Availability for Cilium Egress Gateway

Lightningat CiliumCon Europe 2025 · on Tuesday, 2025-04-01· [kubernetes, networking]
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slides:none on file

Introduces an open source controller that adds HA to Cilium egress by orchestrating cilium-haegress-operator with kube-vip to move a floating egress IP via Kubernetes leader election, creating a dummy Service and patching the Cilium EgressPolicy with the elected node and IP. Failover drops existing connections and completes in 1–2s, so clients need 5–10s timeouts. Notes limits when managing many addresses (example 1,400) and that the operator does not replace Cilium or the API server.

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