Init the klog directly

Since 3948cb8d1b (diff-465167b08358906be13f9641d4798c6e8ad0790395e045af8ace4d08223fa922R78)
the klog verbosity level gets always overriden.

cmd/descheduler/app/options/options.go

@@ -20,10 +20,8 @@ package options
 import (
 	"github.com/spf13/pflag"
 
-	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	apiserveroptions "k8s.io/apiserver/pkg/server/options"
 	clientset "k8s.io/client-go/kubernetes"
-	"k8s.io/component-base/logs"
 
 	"sigs.k8s.io/descheduler/pkg/apis/componentconfig"
 	"sigs.k8s.io/descheduler/pkg/apis/componentconfig/v1alpha1"
@@ -39,7 +37,6 @@ type DeschedulerServer struct {
 	componentconfig.DeschedulerConfiguration
 
 	Client         clientset.Interface
-	Logs           *logs.Options
 	SecureServing  *apiserveroptions.SecureServingOptionsWithLoopback
 	DisableMetrics bool
 }
@@ -56,18 +53,10 @@ func NewDeschedulerServer() (*DeschedulerServer, error) {
 
 	return &DeschedulerServer{
 		DeschedulerConfiguration: *cfg,
-		Logs:                     logs.NewOptions(),
 		SecureServing:            secureServing,
 	}, nil
 }
 
-// Validation checks for DeschedulerServer.
-func (s *DeschedulerServer) ValidateAndApply() error {
-	var errs []error
-	errs = append(errs, s.Logs.ValidateAndApply())
-	return utilerrors.NewAggregate(errs)
-}
-
 func newDefaultComponentConfig() (*componentconfig.DeschedulerConfiguration, error) {
 	versionedCfg := v1alpha1.DeschedulerConfiguration{}
 	deschedulerscheme.Scheme.Default(&versionedCfg)

cmd/descheduler/app/server.go

@@ -29,6 +29,9 @@ import (
 	apiserver "k8s.io/apiserver/pkg/server"
 	"k8s.io/apiserver/pkg/server/mux"
 	restclient "k8s.io/client-go/rest"
+	"k8s.io/component-base/config"
+	_ "k8s.io/component-base/logs/json/register"
+	"k8s.io/component-base/logs/registry"
 	"k8s.io/component-base/metrics/legacyregistry"
 	"k8s.io/klog/v2"
 )
@@ -46,7 +49,7 @@ func NewDeschedulerCommand(out io.Writer) *cobra.Command {
 		Short: "descheduler",
 		Long:  `The descheduler evicts pods which may be bound to less desired nodes`,
 		Run: func(cmd *cobra.Command, args []string) {
-			s.Logs.Config.Format = s.Logging.Format
+			// s.Logs.Config.Format = s.Logging.Format
 
 			// LoopbackClientConfig is a config for a privileged loopback connection
 			var LoopbackClientConfig *restclient.Config
@@ -56,9 +59,13 @@ func NewDeschedulerCommand(out io.Writer) *cobra.Command {
 				return
 			}
 
-			if err := s.ValidateAndApply(); err != nil {
-				klog.ErrorS(err, "failed to validate server configuration")
-				return
+			factory, _ := registry.LogRegistry.Get(s.Logging.Format)
+			if factory == nil {
+				klog.ClearLogger()
+			} else {
+				log, logrFlush := factory.Create(config.FormatOptions{})
+				defer logrFlush()
+				klog.SetLogger(log)
 			}
 
 			if !s.DisableMetrics {

cmd/descheduler/descheduler.go

@@ -20,9 +20,14 @@ import (
 	"os"
 
 	"k8s.io/component-base/cli"
+	"k8s.io/klog/v2"
 	"sigs.k8s.io/descheduler/cmd/descheduler/app"
 )
 
+func init() {
+	klog.InitFlags(nil)
+}
+
 func main() {
 	out := os.Stdout
 	cmd := app.NewDeschedulerCommand(out)