cronjobs and api batch/v2alpha1 and minikube

cron--hello-from-k8s-cluster.yml

---
apiVersion: batch/v2alpha1
kind: CronJob
metadata:
  name: hello
spec:
  schedule: "*/1 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox
            args:
            - /bin/sh
            - -c
            - date; echo Hello from the Kubernetes cluster
          restartPolicy: OnFailure

output-cronjob-creation.log

> kubectl apply -f cron--hello-from-k8s-cluster.yml 
error: error validating "cron--hello-from-k8s-cluster": error validating data: unknown object type schema.GroupVersionKind{Group:"batch", Version:"v2alpha1", Kind:"CronJob"}; if you choose to ignore these errors, turn validation off with --validate=false

output-kubectl-api-versions.log

> kubectl api-versions 
admissionregistration.k8s.io/v1alpha1
apiextensions.k8s.io/v1beta1
apiregistration.k8s.io/v1beta1
apps/v1beta1
authentication.k8s.io/v1
authentication.k8s.io/v1beta1
authorization.k8s.io/v1
authorization.k8s.io/v1beta1
autoscaling/v1
autoscaling/v2alpha1
batch/v1
batch/v2alpha1
certificates.k8s.io/v1beta1
extensions/v1beta1
networking.k8s.io/v1
policy/v1beta1
rbac.authorization.k8s.io/v1alpha1
rbac.authorization.k8s.io/v1beta1
settings.k8s.io/v1alpha1
storage.k8s.io/v1
storage.k8s.io/v1beta1
v1

output-validate-false.log

└> kubectl apply -f cron--hello-from-k8s-cluster.yml --validate=false
cronjob "hello" created
┌cfurmaniak@fedolooz ~/w/Z/f/Exercices
└> kubectl get cronjob
NAME      SCHEDULE      SUSPEND   ACTIVE    LAST SCHEDULE   AGE
hello     */1 * * * *   False     0         <none>

versions.log

└> minikube version
minikube version: v0.22.3
┌cfurmaniak@fedolooz ~/w/Z/f/Exercices
└> kubectl version
Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.0", GitCommit:"6e937839ac04a38cac63e6a7a306c5d035fe7b0a", GitTreeState:"clean", BuildDate:"2017-09-28T22:57:57Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.5", GitCommit:"17d7182a7ccbb167074be7a87f0a68bd00d58d97", GitTreeState:"clean", BuildDate:"2017-10-06T20:53:14Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

@looztra oh, thank you so much for this --validate=false switch.