It's a much less of a deal than it seems. Yeah, it is a popular project that has been around for a while, but this is just another day at work. Things evolve, there are migration paths no matter if you want to stay with ingresses or move on...

Kubernetes is promoting Gateway API for a while now. It's in GA for 2 years already (while Ingress was in GA quite late, 2020/K8s 1.19?).

Sun-setting ingress-nginx was not exactly a secret.

The whole Ingress in k8s is marked in docs as "frozen" for a while as well. There are no radical steps yet, but it's clear that Gateway API is something to get interested in.

Meanwhile Nginx Gateway Fabric [1] (which implements gateway API) is there, still uses nginx under the hood and remains opensource. They even have a "migration tool" to convert objects [3].

There are still a few months of support and time to move on to a different controller. Kubernetes still continues support for ingress so if you want to switch and keep using Ingress, there are other controllers [2].

[1] https://gateway-api.sigs.k8s.io/implementations/#nginx-gatew...

[2] https://gateway-api.sigs.k8s.io/implementations/#gateway-con...

[3] https://docs.nginx.com/nginx-gateway-fabric/install/ingress-...