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Ingress-NGINX will lose support after March 2026, leaving production systems vulnerable without security updates. The deprecation stems from security risks (including the IngressNightmare RCE vulnerability), architectural complexity from annotation overuse, and maintainer shortage. Three migration paths exist: using Chainguard's commercial fork for temporary support, switching to alternative Ingress controllers like Traefik while staying on the Ingress API, or migrating to the Gateway API with Envoy Gateway. The Gateway API separates infrastructure (Gateway) from application routing (HTTPRoute), improving security and role separation but increasing cognitive load. Migration involves reconfiguring cert-manager, external-dns, and handling differences like wildcard certificate challenges (DNS-01 required vs HTTP-01). The guide documents a real enterprise migration with practical examples, configuration snippets, and operational trade-offs.

Understanding the Ingress-NGINX Deprecation — Before You Migrate to the Gateway API

A practical, enterprise-grade migration guide with real-world examples and not another clickbait post abusing the Ingress-NGINX deprecation.

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Migrate to Gateway API + Envoy Gateway Controller