Migrate manifests and API clients to use the networking.k8s.io/v1 API version

[flacatus]

Is your task related to a problem? Please describe.

The extensions/v1beta1 and networking.k8s.io/v1beta1 API versions of Ingress will no longer be served in v1.22.

Currently extensions/v1beta1 is used:

1. che-operator: https://github.com/eclipse-che/che-operator/blob/main/pkg/deploy/ingress.go#L64
2. helmcharts: https://github.com/eclipse-che/che-server/blob/main/deploy/kubernetes/helm/che/templates/ingress.yaml#L23
3. che-server: fabric8 client which creates Ingress v1beta1

https://github.com/eclipse-che/che-server/blob/main/pom.xml#L75
https://github.com/eclipse-che/che-server/blob/main/infrastructures/kubernetes/src/main/java/org/eclipse/che/workspace/infrastructure/kubernetes/util/Ingresses.java#L18

Describe the solution you'd like

Migrate manifests and API clients to use the networking.k8s.io/v1 API version, available since v1.19. [1]

Describe alternatives you've considered

N/A

Additional context

N/A

[1] https://kubernetes.io/docs/reference/using-api/deprecation-guide/#ingress-v122
[2] https://kubernetes.io/releases/

Sub tasks

• Che Operator should generate networking.k8s.io/v1 version of Ingress #20182
• Che server should generate networking.k8s.io/v1 version of Ingress #20181
• Update chectl to check the minimum k8s version

[l0rd]

@tolusha @flacatus if we use v1 we won't be able to support older version of Kubernetes and OpenShift right? Maybe that should be reviewed to make sure that we don't break installations on older version that we currently support.

[tolusha]

@l0rd
The idea is to use Ingress v1 only if platform supports it otherwise Ingress v1beta1 will be used.
So, Eclipse Che will still work on older versions of Kubernetes.

[tolusha]

this issue depends on #19466

[sleshchenko]

related issue on DWO side devfile/devworkspace-operator#543

[tolusha]

Remaining task #20298

[apupier]

For information, Che is not working with latest released Kubernetes 1.22.0 as this deprecated extensions/v1beta1 has been removed.
Kubernetes 1.22.0 will be the base of OpenShift 4.9.

[tolusha]

@apupier
I've just checked next version.
Everything works fine.
Which version were you talking about?

[apupier]

Which version were you talking about?

latest released Eclipse Che 7.35.2

[tolusha]

Should work for upcoming 7.36.0 (and next) now.