refactor: remove usless options (#5671)

refactor: remove useless options

cmd/controller-manager/app/options/options.go

@@ -40,14 +40,12 @@ import (
 	"kubesphere.io/kubesphere/pkg/simple/client/multicluster"
 	"kubesphere.io/kubesphere/pkg/simple/client/network"
 	"kubesphere.io/kubesphere/pkg/simple/client/openpitrix"
-	"kubesphere.io/kubesphere/pkg/simple/client/s3"
 	"kubesphere.io/kubesphere/pkg/simple/client/servicemesh"
 )
 
 type KubeSphereControllerManagerOptions struct {
 	KubernetesOptions     *k8s.KubernetesOptions
 	DevopsOptions         *jenkins.Options
-	S3Options             *s3.Options
 	AuthenticationOptions *authentication.Options
 	LdapOptions           *ldapclient.Options
 	OpenPitrixOptions     *openpitrix.Options
@@ -88,7 +86,6 @@ func NewKubeSphereControllerManagerOptions() *KubeSphereControllerManagerOptions
 	s := &KubeSphereControllerManagerOptions{
 		KubernetesOptions:     k8s.NewKubernetesOptions(),
 		DevopsOptions:         jenkins.NewDevopsOptions(),
-		S3Options:             s3.NewS3Options(),
 		LdapOptions:           ldapclient.NewOptions(),
 		OpenPitrixOptions:     openpitrix.NewOptions(),
 		NetworkOptions:        network.NewNetworkOptions(),
@@ -116,7 +113,6 @@ func (s *KubeSphereControllerManagerOptions) Flags(allControllerNameSelectors []
 
 	s.KubernetesOptions.AddFlags(fss.FlagSet("kubernetes"), s.KubernetesOptions)
 	s.DevopsOptions.AddFlags(fss.FlagSet("devops"), s.DevopsOptions)
-	s.S3Options.AddFlags(fss.FlagSet("s3"), s.S3Options)
 	s.AuthenticationOptions.AddFlags(fss.FlagSet("authentication"), s.AuthenticationOptions)
 	s.LdapOptions.AddFlags(fss.FlagSet("ldap"), s.LdapOptions)
 	s.OpenPitrixOptions.AddFlags(fss.FlagSet("openpitrix"), s.OpenPitrixOptions)
@@ -161,20 +157,19 @@ func (s *KubeSphereControllerManagerOptions) Flags(allControllerNameSelectors []
 }
 
 // Validate Options and Genetic Options
-func (o *KubeSphereControllerManagerOptions) Validate(allControllerNameSelectors []string) []error {
+func (s *KubeSphereControllerManagerOptions) Validate(allControllerNameSelectors []string) []error {
 	var errs []error
-	errs = append(errs, o.DevopsOptions.Validate()...)
+	errs = append(errs, s.DevopsOptions.Validate()...)
-	errs = append(errs, o.KubernetesOptions.Validate()...)
+	errs = append(errs, s.KubernetesOptions.Validate()...)
-	errs = append(errs, o.S3Options.Validate()...)
+	errs = append(errs, s.OpenPitrixOptions.Validate()...)
-	errs = append(errs, o.OpenPitrixOptions.Validate()...)
+	errs = append(errs, s.NetworkOptions.Validate()...)
-	errs = append(errs, o.NetworkOptions.Validate()...)
+	errs = append(errs, s.LdapOptions.Validate()...)
-	errs = append(errs, o.LdapOptions.Validate()...)
+	errs = append(errs, s.MultiClusterOptions.Validate()...)
-	errs = append(errs, o.MultiClusterOptions.Validate()...)
+	errs = append(errs, s.AlertingOptions.Validate()...)
-	errs = append(errs, o.AlertingOptions.Validate()...)
 
 	// genetic option: application-selector
-	if len(o.ApplicationSelector) != 0 {
+	if len(s.ApplicationSelector) != 0 {
-		_, err := labels.Parse(o.ApplicationSelector)
+		_, err := labels.Parse(s.ApplicationSelector)
 		if err != nil {
 			errs = append(errs, err)
 		}
@@ -182,7 +177,7 @@ func (o *KubeSphereControllerManagerOptions) Validate(allControllerNameSelectors
 
 	// genetic option: controllers, check all selectors are valid
 	allControllersNameSet := sets.New(allControllerNameSelectors...)
-	for _, selector := range o.ControllerGates {
+	for _, selector := range s.ControllerGates {
 		if selector == "*" {
 			continue
 		}
@@ -196,9 +191,9 @@ func (o *KubeSphereControllerManagerOptions) Validate(allControllerNameSelectors
 }
 
 // IsControllerEnabled check if a specified controller enabled or not.
-func (o *KubeSphereControllerManagerOptions) IsControllerEnabled(name string) bool {
+func (s *KubeSphereControllerManagerOptions) IsControllerEnabled(name string) bool {
 	hasStar := false
-	for _, ctrl := range o.ControllerGates {
+	for _, ctrl := range s.ControllerGates {
 		if ctrl == name {
 			return true
 		}
@@ -234,7 +229,6 @@ func (s *KubeSphereControllerManagerOptions) bindLeaderElectionFlags(l *leaderel
 func (s *KubeSphereControllerManagerOptions) MergeConfig(cfg *controllerconfig.Config) {
 	s.KubernetesOptions = cfg.KubernetesOptions
 	s.DevopsOptions = cfg.DevopsOptions
-	s.S3Options = cfg.S3Options
 	s.AuthenticationOptions = cfg.AuthenticationOptions
 	s.LdapOptions = cfg.LdapOptions
 	s.OpenPitrixOptions = cfg.OpenPitrixOptions

cmd/controller-manager/app/server.go

@@ -44,7 +44,6 @@ import (
 	"kubesphere.io/kubesphere/pkg/controller/user"
 	"kubesphere.io/kubesphere/pkg/informers"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
-	"kubesphere.io/kubesphere/pkg/simple/client/s3"
 	"kubesphere.io/kubesphere/pkg/utils/metrics"
 	"kubesphere.io/kubesphere/pkg/utils/term"
 	"kubesphere.io/kubesphere/pkg/version"
@@ -58,7 +57,6 @@ func NewControllerManagerCommand() *cobra.Command {
 		s = &options.KubeSphereControllerManagerOptions{
 			KubernetesOptions:     conf.KubernetesOptions,
 			DevopsOptions:         conf.DevopsOptions,
-			S3Options:             conf.S3Options,
 			AuthenticationOptions: conf.AuthenticationOptions,
 			LdapOptions:           conf.LdapOptions,
 			OpenPitrixOptions:     conf.OpenPitrixOptions,
@@ -170,13 +168,6 @@ func run(s *options.KubeSphereControllerManagerOptions, ctx context.Context) err
 		return err
 	}
 
-	if s.S3Options != nil && len(s.S3Options.Endpoint) != 0 {
-		_, err = s3.NewS3Client(s.S3Options)
-		if err != nil {
-			return fmt.Errorf("failed to connect to s3, please check s3 service status, error: %v", err)
-		}
-	}
-
 	informerFactory := informers.NewInformerFactories(
 		kubernetesClient.Kubernetes(),
 		kubernetesClient.KubeSphere(),

cmd/ks-apiserver/apiserver.go

@@ -17,16 +17,15 @@ limitations under the License.
 package main
 
 import (
-	"log"
+	"os"
+
+	"k8s.io/component-base/cli"
 
 	"kubesphere.io/kubesphere/cmd/ks-apiserver/app"
 )
 
 func main() {
-
 	cmd := app.NewAPIServerCommand()
-
+	code := cli.Run(cmd)
-	if err := cmd.Execute(); err != nil {
+	os.Exit(code)
-		log.Fatalln(err)
-	}
 }

cmd/ks-apiserver/app/options/options.go

@@ -24,6 +24,8 @@ import (
 	"strings"
 	"sync"
 
+	"kubesphere.io/kubesphere/pkg/simple/client/cache"
+
 	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
 
 	openpitrixv1 "kubesphere.io/kubesphere/pkg/kapis/openpitrix/v1"
@@ -44,16 +46,12 @@ import (
 	genericoptions "kubesphere.io/kubesphere/pkg/server/options"
 	"kubesphere.io/kubesphere/pkg/simple/client/alerting"
 	auditingclient "kubesphere.io/kubesphere/pkg/simple/client/auditing/elasticsearch"
-	"kubesphere.io/kubesphere/pkg/simple/client/cache"
-
 	"kubesphere.io/kubesphere/pkg/simple/client/devops/jenkins"
 	eventsclient "kubesphere.io/kubesphere/pkg/simple/client/events/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	esclient "kubesphere.io/kubesphere/pkg/simple/client/logging/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/monitoring/metricsserver"
 	"kubesphere.io/kubesphere/pkg/simple/client/monitoring/prometheus"
-	"kubesphere.io/kubesphere/pkg/simple/client/s3"
-	fakes3 "kubesphere.io/kubesphere/pkg/simple/client/s3/fake"
 	"kubesphere.io/kubesphere/pkg/simple/client/sonarqube"
 )
 
@@ -63,9 +61,6 @@ type ServerRunOptions struct {
 	*apiserverconfig.Config
 	schemeOnce sync.Once
 	DebugMode  bool
-
-	// Enable gops or not.
-	GOPSEnabled bool
 }
 
 func NewServerRunOptions() *ServerRunOptions {
@@ -81,8 +76,6 @@ func NewServerRunOptions() *ServerRunOptions {
 func (s *ServerRunOptions) Flags() (fss cliflag.NamedFlagSets) {
 	fs := fss.FlagSet("generic")
 	fs.BoolVar(&s.DebugMode, "debug", false, "Don't enable this if you don't know what it means.")
-	fs.BoolVar(&s.GOPSEnabled, "gops", false, "Whether to enable gops or not. When enabled this option, "+
-		"ks-apiserver will listen on a random port on 127.0.0.1, then you can use the gops tool to list and diagnose the ks-apiserver currently running.")
 	s.GenericServerRunOptions.AddFlags(fs, s.GenericServerRunOptions)
 	s.KubernetesOptions.AddFlags(fss.FlagSet("kubernetes"), s.KubernetesOptions)
 	s.AuthenticationOptions.AddFlags(fss.FlagSet("authentication"), s.AuthenticationOptions)
@@ -111,8 +104,6 @@ func (s *ServerRunOptions) Flags() (fss cliflag.NamedFlagSets) {
 	return fss
 }
 
-const fakeInterface string = "FAKE"
-
 // NewAPIServer creates an APIServer instance using given options
 func (s *ServerRunOptions) NewAPIServer(stopCh <-chan struct{}) (*apiserver.APIServer, error) {
 	apiServer := &apiserver.APIServer{
@@ -132,41 +123,23 @@ func (s *ServerRunOptions) NewAPIServer(stopCh <-chan struct{}) (*apiserver.APIS
 	if s.MonitoringOptions == nil || len(s.MonitoringOptions.Endpoint) == 0 {
 		return nil, fmt.Errorf("moinitoring service address in configuration MUST not be empty, please check configmap/kubesphere-config in kubesphere-system namespace")
 	} else {
-		monitoringClient, err := prometheus.NewPrometheus(s.MonitoringOptions)
+		if apiServer.MonitoringClient, err = prometheus.NewPrometheus(s.MonitoringOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to connect to prometheus, please check prometheus status, error: %v", err)
 		}
-		apiServer.MonitoringClient = monitoringClient
 	}
 
 	apiServer.MetricsClient = metricsserver.NewMetricsClient(kubernetesClient.Kubernetes(), s.KubernetesOptions)
 
 	if s.LoggingOptions.Host != "" {
-		loggingClient, err := esclient.NewClient(s.LoggingOptions)
+		if apiServer.LoggingClient, err = esclient.NewClient(s.LoggingOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to connect to elasticsearch, please check elasticsearch status, error: %v", err)
 		}
-		apiServer.LoggingClient = loggingClient
-	}
-
-	if s.S3Options.Endpoint != "" {
-		if s.S3Options.Endpoint == fakeInterface && s.DebugMode {
-			apiServer.S3Client = fakes3.NewFakeS3()
-		} else {
-			s3Client, err := s3.NewS3Client(s.S3Options)
-			if err != nil {
-				return nil, fmt.Errorf("failed to connect to s3, please check s3 service status, error: %v", err)
-			}
-			apiServer.S3Client = s3Client
-		}
 	}
 
 	if s.DevopsOptions.Host != "" {
-		devopsClient, err := jenkins.NewDevopsClient(s.DevopsOptions)
+		if apiServer.DevopsClient, err = jenkins.NewDevopsClient(s.DevopsOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to connect to jenkins, please check jenkins status, error: %v", err)
 		}
-		apiServer.DevopsClient = devopsClient
 	}
 
 	if s.SonarQubeOptions.Host != "" {
@@ -177,52 +150,30 @@ func (s *ServerRunOptions) NewAPIServer(stopCh <-chan struct{}) (*apiserver.APIS
 		apiServer.SonarClient = sonarqube.NewSonar(sonarClient.SonarQube())
 	}
 
-	// If debug mode is on or CacheOptions is nil, will create a fake cache.
+	if apiServer.CacheClient, err = cache.New(s.CacheOptions, stopCh); err != nil {
-	if s.CacheOptions.Type != "" {
+		return nil, fmt.Errorf("failed to create cache, error: %v", err)
-		if s.DebugMode {
-			s.CacheOptions.Type = cache.DefaultCacheType
-		}
-		cacheClient, err := cache.New(s.CacheOptions, stopCh)
-		if err != nil {
-			return nil, fmt.Errorf("failed to create cache, error: %v", err)
-		}
-		apiServer.CacheClient = cacheClient
-	} else {
-		s.CacheOptions = &cache.Options{Type: cache.DefaultCacheType}
-		// fake cache has no error to return
-		cacheClient, _ := cache.New(s.CacheOptions, stopCh)
-		apiServer.CacheClient = cacheClient
-		klog.Warning("ks-apiserver starts without cache provided, it will use in memory cache. " +
-			"This may cause inconsistencies when running ks-apiserver with multiple replicas, and memory leak risk")
 	}
 
 	if s.EventsOptions.Host != "" {
-		eventsClient, err := eventsclient.NewClient(s.EventsOptions)
+		if apiServer.EventsClient, err = eventsclient.NewClient(s.EventsOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to connect to elasticsearch, please check elasticsearch status, error: %v", err)
 		}
-		apiServer.EventsClient = eventsClient
 	}
 
 	if s.AuditingOptions.Host != "" {
-		auditingClient, err := auditingclient.NewClient(s.AuditingOptions)
+		if apiServer.AuditingClient, err = auditingclient.NewClient(s.AuditingOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to connect to elasticsearch, please check elasticsearch status, error: %v", err)
 		}
-		apiServer.AuditingClient = auditingClient
 	}
 
 	if s.AlertingOptions != nil && (s.AlertingOptions.PrometheusEndpoint != "" || s.AlertingOptions.ThanosRulerEndpoint != "") {
-		alertingClient, err := alerting.NewRuleClient(s.AlertingOptions)
+		if apiServer.AlertingClient, err = alerting.NewRuleClient(s.AlertingOptions); err != nil {
-		if err != nil {
 			return nil, fmt.Errorf("failed to init alerting client: %v", err)
 		}
-		apiServer.AlertingClient = alertingClient
 	}
 
 	if s.Config.MultiClusterOptions.Enable {
-		cc := clusterclient.NewClusterClient(informerFactory.KubeSphereSharedInformerFactory().Cluster().V1alpha1().Clusters())
+		apiServer.ClusterClient = clusterclient.NewClusterClient(informerFactory.KubeSphereSharedInformerFactory().Cluster().V1alpha1().Clusters())
-		apiServer.ClusterClient = cc
 	}
 
 	apiServer.OpenpitrixClient = openpitrixv1.NewOpenpitrixClient(informerFactory, apiServer.KubernetesClient.KubeSphere(), s.OpenPitrixOptions, apiServer.ClusterClient)

cmd/ks-apiserver/app/server.go

@@ -56,7 +56,7 @@ cluster's shared state through which all other components interact.`,
 				return utilerrors.NewAggregate(errs)
 			}
 
-			if s.GOPSEnabled {
+			if s.DebugMode {
 				// Add agent to report additional information such as the current stack trace, Go version, memory stats, etc.
 				// Bind to a random port on address 127.0.0.1.
 				if err := agent.Listen(agent.Options{}); err != nil {

pkg/apiserver/apiserver.go

@@ -107,7 +107,6 @@ import (
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	"kubesphere.io/kubesphere/pkg/simple/client/logging"
 	"kubesphere.io/kubesphere/pkg/simple/client/monitoring"
-	"kubesphere.io/kubesphere/pkg/simple/client/s3"
 	"kubesphere.io/kubesphere/pkg/simple/client/sonarqube"
 	"kubesphere.io/kubesphere/pkg/utils/clusterclient"
 	"kubesphere.io/kubesphere/pkg/utils/iputil"
@@ -146,8 +145,6 @@ type APIServer struct {
 
 	DevopsClient devops.Interface
 
-	S3Client s3.Interface
-
 	SonarClient sonarqube.SonarInterface
 
 	EventsClient events.Client

pkg/simple/client/cache/cache.go

@@ -39,13 +39,13 @@ type Interface interface {
 	// Set sets the value and living duration of the given key, zero duration means never expire
 	Set(key string, value string, duration time.Duration) error
 
-	// Del deletes the given key, no error returned if the key doesn't exists
+	// Del deletes the given key, no error returned if the key doesn't exist
 	Del(keys ...string) error
 
 	// Exists checks the existence of a give key
 	Exists(keys ...string) (bool, error)
 
-	// Expires updates object's expiration time, return err if key doesn't exist
+	// Expire updates object's expiration time, return err if key doesn't exist
 	Expire(key string, duration time.Duration) error
 }
 
@@ -60,6 +60,10 @@ func New(option *Options, stopCh <-chan struct{}) (Interface, error) {
 		return nil, err
 	}
 
+	if option.Type == TypeInMemoryCache {
+		klog.Warning("In-memory cache will be used, this may cause data inconsistencies when running with multiple replicas.")
+	}
+
 	cache, err := cacheFactories[option.Type].Create(option.Options, stopCh)
 	if err != nil {
 		klog.Errorf("failed to create cache, error: %v", err)

pkg/simple/client/cache/inmemory_cache.go

@@ -32,9 +32,7 @@ import (
 var ErrNoSuchKey = errors.New("no such key")
 
 const (
-	typeInMemoryCache = "InMemoryCache"
+	TypeInMemoryCache    = "InMemoryCache"
-	DefaultCacheType  = typeInMemoryCache
-
 	defaultCleanupPeriod = 2 * time.Hour
 )
 
@@ -176,12 +174,11 @@ type inMemoryCacheFactory struct {
 }
 
 func (sf *inMemoryCacheFactory) Type() string {
-	return typeInMemoryCache
+	return TypeInMemoryCache
 }
 
 func (sf *inMemoryCacheFactory) Create(options options.DynamicOptions, stopCh <-chan struct{}) (Interface, error) {
 	var sOptions InMemoryCacheOptions
-
 	decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
 		DecodeHook:       mapstructure.StringToTimeDurationHookFunc(),
 		WeaklyTypedInput: true,

pkg/simple/client/cache/options.go

@@ -31,7 +31,7 @@ type Options struct {
 // because redis is not required for some components
 func NewCacheOptions() *Options {
 	return &Options{
-		Type:    "",
+		Type:    TypeInMemoryCache,
 		Options: map[string]interface{}{},
 	}
 }

pkg/simple/client/s3/s3.go

@@ -22,6 +22,8 @@ import (
 	"math"
 	"time"
 
+	fakes3 "kubesphere.io/kubesphere/pkg/simple/client/s3/fake"
+
 	"code.cloudfoundry.org/bytefmt"
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/credentials"
@@ -44,6 +46,8 @@ const (
 	MinConcurrency = 5
 	// MaxConcurrency is the maximum concurrency to limit the goroutines.
 	MaxConcurrency = 128
+
+	fakeS3Host = "FAKE"
 )
 
 // calculateConcurrency calculates the concurrency for better performance,
@@ -120,6 +124,10 @@ func (s *Client) Delete(key string) error {
 }
 
 func NewS3Client(options *Options) (Interface, error) {
+	if options.Endpoint == fakeS3Host {
+		return fakes3.NewFakeS3(), nil
+	}
+
 	cred := credentials.NewStaticCredentials(options.AccessKeyID, options.SecretAccessKey, options.SessionToken)
 
 	config := aws.Config{

vendor/k8s.io/component-base/cli/OWNERS

@@ -0,0 +1,12 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+
+# Currently assigned cli to sig-cli since:
+# (a) its literally named "cli"
+# (b) flags are the bread-and-butter of cli tools.
+
+approvers:
+  - sig-cli-maintainers
+reviewers:
+  - sig-cli-reviewers
+labels:
+  - sig/cli

vendor/k8s.io/component-base/cli/run.go

@@ -0,0 +1,148 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package cli
+
+import (
+	"fmt"
+	"math/rand"
+	"os"
+	"time"
+
+	"github.com/spf13/cobra"
+
+	cliflag "k8s.io/component-base/cli/flag"
+	"k8s.io/component-base/logs"
+	"k8s.io/klog/v2"
+)
+
+// Run provides the common boilerplate code around executing a cobra command.
+// For example, it ensures that logging is set up properly. Logging
+// flags get added to the command line if not added already. Flags get normalized
+// so that help texts show them with hyphens. Underscores are accepted
+// as alternative for the command parameters.
+//
+// Run tries to be smart about how to print errors that are returned by the
+// command: before logging is known to be set up, it prints them as plain text
+// to stderr. This covers command line flag parse errors and unknown commands.
+// Afterwards it logs them. This covers runtime errors.
+//
+// Commands like kubectl where logging is not normally part of the runtime output
+// should use RunNoErrOutput instead and deal with the returned error themselves.
+func Run(cmd *cobra.Command) int {
+	if logsInitialized, err := run(cmd); err != nil {
+		// If the error is about flag parsing, then printing that error
+		// with the decoration that klog would add ("E0923
+		// 23:02:03.219216 4168816 run.go:61] unknown shorthand flag")
+		// is less readable. Using klog.Fatal is even worse because it
+		// dumps a stack trace that isn't about the error.
+		//
+		// But if it is some other error encountered at runtime, then
+		// we want to log it as error, at least in most commands because
+		// their output is a log event stream.
+		//
+		// We can distinguish these two cases depending on whether
+		// we got to logs.InitLogs() above.
+		//
+		// This heuristic might be problematic for command line
+		// tools like kubectl where the output is carefully controlled
+		// and not a log by default. They should use RunNoErrOutput
+		// instead.
+		//
+		// The usage of klog is problematic also because we don't know
+		// whether the command has managed to configure it. This cannot
+		// be checked right now, but may become possible when the early
+		// logging proposal from
+		// https://github.com/kubernetes/enhancements/pull/3078
+		// ("contextual logging") is implemented.
+		if !logsInitialized {
+			fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		} else {
+			klog.ErrorS(err, "command failed")
+		}
+		return 1
+	}
+	return 0
+}
+
+// RunNoErrOutput is a version of Run which returns the cobra command error
+// instead of printing it.
+func RunNoErrOutput(cmd *cobra.Command) error {
+	_, err := run(cmd)
+	return err
+}
+
+func run(cmd *cobra.Command) (logsInitialized bool, err error) {
+	rand.Seed(time.Now().UnixNano())
+	defer logs.FlushLogs()
+
+	cmd.SetGlobalNormalizationFunc(cliflag.WordSepNormalizeFunc)
+
+	// When error printing is enabled for the Cobra command, a flag parse
+	// error gets printed first, then optionally the often long usage
+	// text. This is very unreadable in a console because the last few
+	// lines that will be visible on screen don't include the error.
+	//
+	// The recommendation from #sig-cli was to print the usage text, then
+	// the error. We implement this consistently for all commands here.
+	// However, we don't want to print the usage text when command
+	// execution fails for other reasons than parsing. We detect this via
+	// the FlagParseError callback.
+	//
+	// Some commands, like kubectl, already deal with this themselves.
+	// We don't change the behavior for those.
+	if !cmd.SilenceUsage {
+		cmd.SilenceUsage = true
+		cmd.SetFlagErrorFunc(func(c *cobra.Command, err error) error {
+			// Re-enable usage printing.
+			c.SilenceUsage = false
+			return err
+		})
+	}
+
+	// In all cases error printing is done below.
+	cmd.SilenceErrors = true
+
+	// This is idempotent.
+	logs.AddFlags(cmd.PersistentFlags())
+
+	// Inject logs.InitLogs after command line parsing into one of the
+	// PersistentPre* functions.
+	switch {
+	case cmd.PersistentPreRun != nil:
+		pre := cmd.PersistentPreRun
+		cmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+			logs.InitLogs()
+			logsInitialized = true
+			pre(cmd, args)
+		}
+	case cmd.PersistentPreRunE != nil:
+		pre := cmd.PersistentPreRunE
+		cmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
+			logs.InitLogs()
+			logsInitialized = true
+			return pre(cmd, args)
+		}
+	default:
+		cmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+			logs.InitLogs()
+			logsInitialized = true
+		}
+	}
+
+	err = cmd.Execute()
+	return
+}

vendor/modules.txt

@@ -2256,6 +2256,7 @@ k8s.io/code-generator/pkg/namer
 k8s.io/code-generator/pkg/util
 # k8s.io/component-base v0.26.1 => k8s.io/component-base v0.26.1
 ## explicit; go 1.19
+k8s.io/component-base/cli
 k8s.io/component-base/cli/flag
 k8s.io/component-base/config
 k8s.io/component-base/config/v1alpha1