docs: add gateway api ga blog post

Author: shaneutt

content/en/blog/_posts/2023-10-19-Gateway-API-GA.md

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+---
+layout: blog
+title: "Gateway API is now Generally Available (GA)"
+date: 2023-10-19T10:00:00-08:00
+slug: gateway-api-ga
+---
+
+***Authors:*** Shane Utt (Kong), Nick Young (Isovalent), Rob Scott (Google)
+
+We (the community developing [Gateway API][gwapi]) are incredibly pleased and
+proud to announce _general availability_ of Gateway API for use with Kubernetes
+clusters `v1.24` and newer!
+
+## Important Highlights
+
+Gateway API brings a lot of new networking possibilities to the table in your
+Kubernetes cluster. In this post we'll cover some of the most important
+highlights.
+
+For a complete list of changes for this specific release, please see our
+[v1.0.0 changelog entry][chlogv1].
+
+For a complete list of every feature for every release, or to review some of
+the releases leading up to `v1.0.0`, please see our [historical
+changelog][clog].
+
+### Version 1 APIs
+
+This marks the **first stable release** of Gateway API, where we are now
+publishing the following APIs as `v1` (Version 1):
+
+- [GatewayClass][gwc]
+- [Gateway][gw]
+- [HTTPRoute][hr]
+
+Reaching version 1 with these APIs means we future iterations on them will be
+handled in a backwards compatible manner.
+
+### CEL Migration
+
+Gateway API [CRDs][crds] now include [CEL][cel] validation. This streamlines
+the development of validation for our resources, and reduces the overhead of
+deploying Gateway API to a cluster as it eliminates the need for our historical
+[admission webhook][admw].
+
+> **Note**: For Kubernetes `v1.25` and newer we recommend against deploying the
+> webhook, and if you had it running previously you can now uninstall it in
+> favor of the validation now provided via CEL.
+
+### Kubernetes Support
+
+Gateway API generally [supports the last 5 stable Kubernetes versions][kvs]. As
+such, this release is supported on Kubernetes clusters version `1.24` through
+`1.29` at the time of release.
+
+> **Warning**: Related to our migration to [CEL][cel] as mentioned above, we
+> don't recommend deploying on `v1.24` clusters if it can be avoided as these
+> clusters will still require the admission webhook, and that webhook is
+> considered deprecated and support for it will drop shortly after this GA
+> release when Kubernetes `v1.30` becomes available. If it's unavoidable to
+> deploy on `v1.24`, just note that you'll need to upgrade fairly soon in
+> order to be considered supported.
+
+### Getting Started
+
+If you want to try Gateway API features out for yourself but don't know where
+to get started you'll want to check out one of the 20+ implementations which
+we list on our website:
+
+https://gateway-api.sigs.k8s.io/implementations/
+
+Gateway API itself is just an API for downstream projects to implement, so take
+some time to peruse the implementations list above and find one that seems to
+fit your needs, or that you're most familiar with.
+
+> **Note**: with this release we now have basic support for downstream
+> implementations to report the results of their Gateway API conformance test
+> runs. This means that for some implementations on the above implementations
+> page you may see a `Gateway API Conformance vX.X.X` badge present under their
+> project header. This indicates that this implementation _is conformant_ for
+> the version present in the badge, and is sending back reports of their
+> conformance to the upstream project, including details on which specific
+> features they support. Click on the badge to see a more detailed report of
+> supported features, but note that the reporting system is considered
+> experimental and the structure of these reports is subject to change.
+
+## Future Plans
+
+General availability is just the beginning of the much larger journey for
+Gateway API, and there's plenty of new features and new ideas in flight for the
+upcoming releases!
+
+If you opt-in to the [experimental channel][expch] for this release, you'll find
+that there are several experimental features available which are being
+considered for inclusion as stable in future releases:
+
+- [BackendTLSPolicy][gep1897]
+- [HTTPRoute Timeouts][gep1742]
+- [Gateway Infrastructure Labels][gep1762]
+- [Websockets, HTTP/2 and More!][gep1911]
+- [GWCTL, our new Gateway API CLI][gwctl]
+
+We intend to have a blog post following up on this one which will cover these
+(and potentially more) experimental and upcoming features where the authors of
+the features themselves can provide a greater level of detail.
+
+In future iterations we also intend to grow the maturity and work towards
+[graduation][grad] of APIs other than `GatewayClass`, `Gateway`, and
+`HTTPRoute`, which are not yet at version 1:
+
+- [GRPCRoute][grpc]
+- [TCPRoute][tcp]
+- [UDPRoute][udp]
+- [TLSRoute][tls]
+- [ReferenceGrant][refg]
+
+[ReferenceGrant][refg] is a slightly special case as we are considering what
+to do with this resource next: we've come to understand this might be a
+feature applicable to the greater Kubernetes community and we're trying to
+navigate potentially moving it somewhere more general to maximize benefit.
+
+For those interested in service mesh, note that we continue to work on making
+Gateway API resources available for use in service mesh contexts as part of the
+[GAMMA project][gamma]. Please see our recent blog post ["Gateway API v0.8.0:
+Introducing Service Mesh Support"][gammablog] for more details.
+
+What you've seen here is _not exhaustive_! Gateway API is a highly active
+project, with dozens of people actively working on it. If you're hoping to see
+one of the above routes graduated, or have ideas for features that we have yet
+to account for, we _strongly encourage_ you to [join us in the community][com]
+and help us build!
+
+## Kubecon North America: Chicago
+
+At [Kubecon North America (Chicago)][kna] and the adjacent
+[Contributor Summit][csum] there are several talks about or related to Gateway
+API that expand upon GA, discuss some of our new features, and even talk about
+what happens next. If you're attending Kubecon and the Contributor Summit this
+year, please do see us at these talks!
+
+*Contributor Summit*:
+
+- [Lessons learned building a GA API with CRDs][csum1]
+- [Conformance Testing (from Gateway API)][csum2]
+- [Gateway API: Beyond GA][csum3]
+
+*Kubecon Main Event*:
+
+**TODO**
+
+## Recognition & Appreciation
+
+Our project is more than just a project, it is a community of people working
+together to solve common problems. Our community _is_ the project and we want to
+give a huge shout out and thanks to them!
+
+Thank you so much to our [170+ contributors][contribs] who built this project
+together with us, and made our GA release possible!
+
+A special thank you to our [community members which agreed to take on an
+official role in the project][roles], explicitly providing some time for reviews
+and sharing the load of maintaining the project!
+
+[gwapi]:https://gateway-api.sigs.k8s.io/
+[clogv1]:https://github.com/kubernetes-sigs/gateway-api/blob/main/CHANGELOG.md#v100
+[clog]:https://github.com/kubernetes-sigs/gateway-api/blob/main/CHANGELOG.md
+[gwc]:https://gateway-api.sigs.k8s.io/api-types/gatewayclass/
+[gw]:https://gateway-api.sigs.k8s.io/api-types/gateway/
+[hr]:https://gateway-api.sigs.k8s.io/api-types/httproute/
+[crds]:https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/
+[kvs]:https://gateway-api.sigs.k8s.io/concepts/versioning/#supported-versions
+[cel]:https://kubernetes.io/docs/reference/using-api/cel/
+[admw]:https://github.com/kubernetes-sigs/gateway-api/tree/main/config/webhook
+[expch]:https://gateway-api.sigs.k8s.io/concepts/versioning/#release-channels
+[gep1897]:https://gateway-api.sigs.k8s.io/geps/gep-1897/
+[gep1742]:https://gateway-api.sigs.k8s.io/geps/gep-1742/
+[gep1762]:https://gateway-api.sigs.k8s.io/geps/gep-1762/
+[gep1911]:https://gateway-api.sigs.k8s.io/geps/gep-1911/
+[gwctl]:https://github.com/kubernetes-sigs/gateway-api/tree/main/gwctl
+[grad]:https://gateway-api.sigs.k8s.io/concepts/versioning/#graduation-criteria
+[grpc]:https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io/v1alpha2.GRPCRoute
+[tcp]:https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io/v1alpha2.TCPRoute
+[udp]:https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io/v1alpha2.UDPRoute
+[tls]:https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io/v1alpha2.TLSRoute
+[com]:https://gateway-api.sigs.k8s.io/contributing/#how-to-get-involved
+[refg]:https://gateway-api.sigs.k8s.io/api-types/referencegrant/
+[gamma]:https://gateway-api.sigs.k8s.io/concepts/gamma/
+[gammablog]:https://kubernetes.io/blog/2023/08/29/gateway-api-v0-8/
+[kna]:https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/
+[csum]:https://kcsna2023.sched.com/
+[csum1]:https://kcsna2023.sched.com/event/1Sp9u/lessons-learned-building-a-ga-api-with-crds
+[csum2]:https://kcsna2023.sched.com/event/1Sp9l/conformance-profiles-building-a-generic-conformance-test-reporting-framework
+[csum3]:https://kcsna2023.sched.com/event/1SpA9/gateway-api-beyond-ga
+[contribs]:https://github.com/kubernetes-sigs/gateway-api/graphs/contributors
+[roles]:https://github.com/kubernetes-sigs/gateway-api/blob/main/OWNERS_ALIASES