Migrate from the retired ingress-nginx controller to Kubernetes Gateway API, and design, debug, and review Gateway API ingress. Covers annotation inventory and risk triage, ingress2gateway conversion, implementation choice (Envoy Gateway default, Cilium, Istio, NGINX Gateway Fabric, AWS Load Balancer Controller), CRD channel and lifecycle, shared-Gateway ownership, cert-manager listener TLS, Flux layering, parallel-run DNS cutover, and rollback. Use when asked to "migrate off ingress-nginx", "convert my Ingresses to HTTPRoute", "set up Gateway API", "why is my HTTPRoute not attached", or "plan the ingress cutover". Flux reconciliation stuck → /platform-skills:gitops. East-west HTTPRoute in a mesh → /platform-skills:linkerd.
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The canonical home for this skill is gateway-api in nitinjain999/platform-skills
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