fix: remove --crds-version in velero install command

Due to only v1 CRD is supported in velero version 1.8, remove CRDs version choosing option.

Signed-off-by: Xun Jiang <jxun@vmware.com>

pkg/cmd/cli/install/install.go

@@ -25,11 +25,9 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
-	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	"github.com/vmware-tanzu/velero/internal/velero"
 	velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
@@ -37,7 +35,6 @@ import (
 	"github.com/vmware-tanzu/velero/pkg/cmd"
 	"github.com/vmware-tanzu/velero/pkg/cmd/util/flag"
 	"github.com/vmware-tanzu/velero/pkg/cmd/util/output"
-	velerodiscovery "github.com/vmware-tanzu/velero/pkg/discovery"
 	"github.com/vmware-tanzu/velero/pkg/install"
 	kubeutil "github.com/vmware-tanzu/velero/pkg/util/kube"
 )
@@ -72,7 +69,6 @@ type InstallOptions struct {
 	Plugins                           flag.StringArray
 	NoDefaultBackupLocation           bool
 	CRDsOnly                          bool
-	CRDsVersion                       string
 	CACertFile                        string
 	Features                          string
 	DefaultVolumesToRestic            bool
@@ -107,7 +103,6 @@ func (o *InstallOptions) BindFlags(flags *pflag.FlagSet) {
 	flags.DurationVar(&o.DefaultResticMaintenanceFrequency, "default-restic-prune-frequency", o.DefaultResticMaintenanceFrequency, "How often 'restic prune' is run for restic repositories by default. Optional.")
 	flags.Var(&o.Plugins, "plugins", "Plugin container images to install into the Velero Deployment")
 	flags.BoolVar(&o.CRDsOnly, "crds-only", o.CRDsOnly, "Only generate CustomResourceDefinition resources. Useful for updating CRDs for an existing Velero install.")
-	flags.StringVar(&o.CRDsVersion, "crds-version", o.CRDsVersion, "The version to generate CustomResourceDefinition resources if Velero can't discover the Kubernetes preferred CRD API version. Optional.")
 	flags.StringVar(&o.CACertFile, "cacert", o.CACertFile, "File containing a certificate bundle to use when verifying TLS connections to the object store. Optional.")
 	flags.StringVar(&o.Features, "features", o.Features, "Comma separated list of Velero feature flags to be set on the Velero deployment and the restic daemonset, if restic is enabled")
 	flags.BoolVar(&o.DefaultVolumesToRestic, "default-volumes-to-restic", o.DefaultVolumesToRestic, "Bool flag to configure Velero server to use restic by default to backup all pod volumes on all backups. Optional.")
@@ -134,7 +129,6 @@ func NewInstallOptions() *InstallOptions {
 		UseVolumeSnapshots:      true,
 		NoDefaultBackupLocation: false,
 		CRDsOnly:                false,
-		CRDsVersion:             "v1",
 		DefaultVolumesToRestic:  false,
 	}
 }
@@ -193,7 +187,6 @@ func (o *InstallOptions) AsVeleroOptions() (*install.VeleroOptions, error) {
 		NoDefaultBackupLocation:           o.NoDefaultBackupLocation,
 		CACertData:                        caCertData,
 		Features:                          strings.Split(o.Features, ","),
-		CRDsVersion:                       o.CRDsVersion,
 		DefaultVolumesToRestic:            o.DefaultVolumesToRestic,
 	}, nil
 }
@@ -254,30 +247,9 @@ This is useful as a starting point for more customized installations.
 
 // Run executes a command in the context of the provided arguments.
 func (o *InstallOptions) Run(c *cobra.Command, f client.Factory) error {
-	// Find the kube-apiserver group apiextensions.k8s.io preferred API version
-	clientset, err := f.KubeClient()
-	if err == nil {
-		// kubeconfig available
-		discoveryHelper, err := velerodiscovery.NewHelper(clientset.Discovery(), &logrus.Logger{})
-		if err == nil {
-			// kubernetes apiserver available
-			gvr, _, err := discoveryHelper.ResourceFor(
-				schema.GroupVersionResource{
-					Group:    "apiextensions.k8s.io",
-					Resource: "customresourcedefinitions",
-				})
-			if err != nil {
-				return err
-			}
-
-			// Update the group apiextensions.k8s.io preferred API version
-			o.CRDsVersion = gvr.Version
-		}
-	}
-
 	var resources *unstructured.UnstructuredList
 	if o.CRDsOnly {
-		resources = install.AllCRDs(o.CRDsVersion)
+		resources = install.AllCRDs()
 	} else {
 		vo, err := o.AsVeleroOptions()
 		if err != nil {
@@ -348,11 +320,6 @@ func (o *InstallOptions) Validate(c *cobra.Command, args []string, f client.Fact
 		return err
 	}
 
-	// Check the CRD version is valid.
-	if o.CRDsVersion != "v1beta1" && o.CRDsVersion != "v1" {
-		return errors.Errorf("CRD version must be v1beta1 or v1")
-	}
-
 	// If we're only installing CRDs, we can skip the rest of the validation.
 	if o.CRDsOnly {
 		return nil