kubernetes - 如何将所有 kubernetes 入口 yaml 转换为使用 API 版本networking.k8s.io/v1

Question

Kubernetes Ingress API 版本 networking.k8s.io/v1 wrt extensions/v1beta1 字段有很多变化，如下所示:

* `spec.backend` -> `spec.defaultBackend`
* `serviceName` -> `service.name`
* `servicePort` -> `service.port.name` (for string values)
* `servicePort` -> `service.port.number` (for numeric values)
* `pathType` no longer has a default value in v1; "Exact", "Prefix", or "ImplementationSpecific" must be specified

将所有入口 yaml 文件从 extensions/v1beta1 转换为networking.k8s.io/v1 的最简单方法是什么。
看起来 kubectl convert 在 v1.19 中已经被弃用了。
Kubernetes 版本:

kubectl version
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.0", GitCommit:"e19964183377d0ec2052d1f1fa930c4d7575bd50", GitTreeState:"clean", BuildDate:"2020-08-26T14:30:33Z", GoVersion:"go1.15", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.0", GitCommit:"e19964183377d0ec2052d1f1fa930c4d7575bd50", GitTreeState:"clean", BuildDate:"2020-08-26T14:23:04Z", GoVersion:"go1.15", Compiler:"gc", Platform:"linux/amd64"}

使用 kubectl convert 时出错:

kubectl convert -f ingress_4_10_1.yaml --output-version  networking.k8s.io/v1
kubectl convert is DEPRECATED and will be removed in a future version.
In order to convert, kubectl apply the object to the cluster, then kubectl get at the desired version.
error: networking.Ingress is not suitable for converting to "networking.k8s.io/v1" in scheme "k8s.io/kubernetes/pkg/api/legacyscheme/scheme.go:30"

我的入口 yaml:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: frontend
  annotations:
   kubernetes.io/ingress.class: "ing-class1"
spec:
  rules:
  - host:  frontend.com
    http:
      paths:
      - path: /web-frontend/frontend.php
        backend:
          serviceName: frontend
          servicePort: 80

Answer 1

手动重写它并不难，例如:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: frontend
  annotations:
   kubernetes.io/ingress.class: "ing-class1"
spec:
  rules:
  - host: frontend.com
    http:
      paths:
      - backend:
          service:
            name: frontend
            port:
              number: 80
        path: /web-frontend/frontend.php
        pathType: Exact