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Off Ingress-NGINX: The Gateway API Migration Playbook
Move production traffic from the retired Ingress-NGINX controller to Kubernetes Gateway API
This book is 100% completeLast updated on 2026-10-07
Ingress-NGINX is retired and about half of all clusters still run it. This is the step-by-step playbook for moving production traffic to Kubernetes Gateway API: a verified annotation-by-annotation map (including every no-equivalent case and its workaround), a decision matrix for nine implementations, inventory scripts, zero-downtime cutover and rollback runbooks, and twelve before/after manifests validated against the real CRD schemas.
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About
About the Book
Ingress-NGINX was retired in March 2026 and about half of cloud-native environments were still running it. This playbook gets platform and DevOps engineers from 140 Ingress objects and 37 annotations to a Gateway API estate with a rehearsed rollback.
It explains the Gateway/HTTPRoute model one Ingress concept at a time, compares every realistic implementation with exact install commands, and provides scripts to inventory your fleet. The core is a complete, verified table of Ingress-NGINX annotations: what ingress2gateway converts, what needs an implementation policy, and the ones with no equivalent (snippets, rate limiting, auth-url, sticky sessions, custom error pages), each with a working workaround for NGINX Gateway Fabric and Envoy Gateway.
Also covered: TLS and cert-manager, canaries, rewrites, observability, multi-tenancy and RBAC, troubleshooting, zero-downtime cutover runbooks, and twelve complete before/after manifests validated against the real CRD schemas.
What you get:
1. A full annotation-by-annotation map including every no-equivalent case and its workaround on NGINX Gateway Fabric and Envoy Gateway.
2. Decision matrix and install recipes for nine implementations (NGF, Envoy Gateway, kgateway, Cilium, Istio, Traefik, GKE, AWS LBC, Azure AGC).
3. Runnable inventory scripts (kubectl + jq) that find host-sharing regex side effects, snippets and L4 services before they break your cutover.
4. Zero-downtime cutover and rollback runbooks: dark deploy, per-host DNS ramp, soak criteria, decommission steps.
5. Every field verified against the October 2026 official docs and every manifest validated against the Gateway API v1.6 / NGF 2.7 / Envoy Gateway 1.9 CRD schemas; sources footnoted.
AI-assistance disclosure: this book was written with AI assistance. An AI coding assistant drafted text and manifests under the author's direction, and every API field, annotation and command was then verified against the official documentation (October 2026) and every manifest validated against the published CRD schemas. Where a vendor's documentation does not describe a capability the text says so rather than guessing, and the editing log that ships with the book lists each such judgement with its source.
Author
About the Author
vigohan
Writes practical, source-verified guides for Kubernetes platform and DevOps teams. First title: Off Ingress-NGINX: The Gateway API Migration Playbook (2026), covering the move from the retired Ingress-NGINX controller to Gateway API with verified annotation maps, controller comparisons and zero-downtime cutover runbooks.
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