Fix linter errors

marquiz · marquiz · commit 541fb996ab2d · 2025-08-19T09:48:01.000+03:00
Fix or silence errors from golangci-lint v2.4.0:

- unchecked return values (errcheck)
- nolint for Close() for read-only files and http servers
- unnecessary naming of embedded fields of structs (staticcheck)
- multiple imports of the same package (staticcheck)
- use switch-case instead of if/else (staticcheck)
- remove type from var declaration (staticcheck)
- remove "Yoda" condition from if (staticcheck)
- don't use dot imports
diff --git a/cmd/nfd-gc/main.go b/cmd/nfd-gc/main.go
@@ -68,7 +68,7 @@ func parseArgs(flags *flag.FlagSet, osArgs ...string) *nfdgarbagecollector.Args
 
 	_ = flags.Parse(osArgs)
 	if len(flags.Args()) > 0 {
-		fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
+		_, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
 		flags.Usage()
 		os.Exit(2)
 	}
diff --git a/cmd/nfd-master/main.go b/cmd/nfd-master/main.go
@@ -51,7 +51,7 @@ func main() {
 
 	_ = flags.Parse(os.Args[1:])
 	if len(flags.Args()) > 0 {
-		fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
+		_, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
 		flags.Usage()
 		os.Exit(2)
 	}
diff --git a/cmd/nfd-topology-updater/main.go b/cmd/nfd-topology-updater/main.go
@@ -70,7 +70,7 @@ func parseArgs(flags *flag.FlagSet, osArgs ...string) (*topology.Args, *resource
 
 	_ = flags.Parse(osArgs)
 	if len(flags.Args()) > 0 {
-		fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
+		_, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
 		flags.Usage()
 		os.Exit(2)
 	}
@@ -83,7 +83,7 @@ func parseArgs(flags *flag.FlagSet, osArgs ...string) (*topology.Args, *resource
 	if len(resourcemonitorArgs.KubeletConfigURI) == 0 {
 		nodeAddress := os.Getenv("NODE_ADDRESS")
 		if len(nodeAddress) == 0 {
-			fmt.Fprintf(flags.Output(), "unable to determine the default kubelet config endpoint 'https://${NODE_ADDRESS}:%d/configz' due to empty NODE_ADDRESS environment, "+
+			_, _ = fmt.Fprintf(flags.Output(), "unable to determine the default kubelet config endpoint 'https://${NODE_ADDRESS}:%d/configz' due to empty NODE_ADDRESS environment, "+
 				"please either define the NODE_ADDRESS environment variable or specify endpoint with the -kubelet-config-uri flag\n", kubeletSecurePort)
 			os.Exit(1)
 		}
diff --git a/cmd/nfd-worker/main.go b/cmd/nfd-worker/main.go
@@ -77,7 +77,7 @@ func parseArgs(flags *flag.FlagSet, osArgs ...string) *worker.Args {
 
 	_ = flags.Parse(osArgs)
 	if len(flags.Args()) > 0 {
-		fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
+		_, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])
 		flags.Usage()
 		os.Exit(2)
 	}
diff --git a/pkg/apis/nfd/nodefeaturerule/expression.go b/pkg/apis/nfd/nodefeaturerule/expression.go
@@ -452,7 +452,7 @@ func MatchGetInstances(m *nfdv1alpha1.MatchExpressionSet, instances []nfdv1alpha
 func MatchMulti(m *nfdv1alpha1.MatchExpressionSet, keys map[string]nfdv1alpha1.Nil, values map[string]string, instances []nfdv1alpha1.InstanceFeature, failFast bool) (bool, []MatchedElement, *nfdv1alpha1.MatchExpressionSet, error) {
 	matchedElems := []MatchedElement{}
 	matchedExpressions := nfdv1alpha1.MatchExpressionSet{}
-	isMatch := false
+	isMatch := false // nolint: staticcheck
 
 	// Keys and values are handled as a union, it is enough to find a match in
 	// either of them
diff --git a/pkg/nfd-gc/nfd-gc.go b/pkg/nfd-gc/nfd-gc.go
@@ -131,7 +131,7 @@ func (n *nfdGarbageCollector) deleteNodeHandler(object interface{}) {
 		klog.InfoS("cannot convert object to metav1.ObjectMeta", "object", object)
 		return
 	}
-	nodeName := meta.ObjectMeta.GetName()
+	nodeName := meta.GetName()
 
 	n.deleteNRT(nodeName)
 
@@ -177,10 +177,10 @@ func (n *nfdGarbageCollector) garbageCollect() {
 				handler(item)
 			}
 
-			if rsp.ListMeta.Continue == "" {
+			if rsp.Continue == "" {
 				break
 			}
-			opts.Continue = rsp.ListMeta.Continue
+			opts.Continue = rsp.Continue
 		}
 	}
 
@@ -269,7 +269,7 @@ func (n *nfdGarbageCollector) Run() error {
 			klog.InfoS("HTTP server stopped")
 		}
 	}()
-	defer httpServer.Close()
+	defer httpServer.Close() // nolint:errcheck
 
 	if err := n.startNodeInformer(); err != nil {
 		return err
diff --git a/pkg/nfd-master/nfd-master-internal_test.go b/pkg/nfd-master/nfd-master-internal_test.go
@@ -645,7 +645,11 @@ func TestConfigParse(t *testing.T) {
 		})
 		// Create a temporary config file
 		f, err := os.CreateTemp("", "nfd-test-")
-		defer os.Remove(f.Name())
+		defer func() {
+			if err := os.Remove(f.Name()); err != nil {
+				t.Logf("failed to remove temp file %s: %v", f.Name(), err)
+			}
+		}()
 		So(err, ShouldBeNil)
 		_, err = f.WriteString(`
 noPublish: true
@@ -657,7 +661,8 @@ leaderElection:
   renewDeadline: 4s
   retryPeriod: 30s
 `)
-		f.Close()
+		So(err, ShouldBeNil)
+		err = f.Close()
 		So(err, ShouldBeNil)
 
 		Convey("and a proper config file is specified", func() {
diff --git a/pkg/nfd-master/nfd-master.go b/pkg/nfd-master/nfd-master.go
@@ -37,8 +37,7 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/labels"
-	k8sLabels "k8s.io/apimachinery/pkg/labels"
+	k8slabels "k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/sets"
 	k8sclient "k8s.io/client-go/kubernetes"
@@ -150,8 +149,8 @@ type nfdMaster struct {
 	k8sClient      k8sclient.Interface
 	nfdClient      nfdclientset.Interface
 	updaterPool    *updaterPool
-	deniedNs
-	config *NFDConfig
+	deniedNs       deniedNs
+	config         *NFDConfig
 
 	// isLeader indicates if this instance is the leader, changing dynamically
 	isLeader bool
@@ -327,7 +326,7 @@ func (m *nfdMaster) Run() error {
 		klog.InfoS("http server starting", "port", httpServer.Addr)
 		klog.InfoS("http server stopped", "exitCode", httpServer.ListenAndServe())
 	}()
-	defer httpServer.Close()
+	defer httpServer.Close() // nolint: errcheck
 
 	<-m.stop
 	klog.InfoS("shutting down nfd-master")
@@ -348,13 +347,13 @@ func (m *nfdMaster) nfdAPIUpdateHandler() {
 	rateLimit := time.After(time.Second)
 	for {
 		select {
-		case <-m.nfdController.updateAllNodesChan:
+		case <-m.updateAllNodesChan:
 			updateAll = true
-		case nodeName := <-m.nfdController.updateOneNodeChan:
+		case nodeName := <-m.updateOneNodeChan:
 			updateNodes[nodeName] = struct{}{}
-		case <-m.nfdController.updateAllNodeFeatureGroupsChan:
+		case <-m.updateAllNodeFeatureGroupsChan:
 			updateAllNodeFeatureGroups = true
-		case nodeFeatureGroupName := <-m.nfdController.updateNodeFeatureGroupChan:
+		case nodeFeatureGroupName := <-m.updateNodeFeatureGroupChan:
 			nodeFeatureGroup[nodeFeatureGroupName] = struct{}{}
 		case <-rateLimit:
 			// If we're not the leader, don't do anything, sleep a bit longer
@@ -595,8 +594,8 @@ func (m *nfdMaster) getAndMergeNodeFeatures(nodeName string) (*nfdv1alpha1.NodeF
 		},
 	}
 
-	sel := k8sLabels.SelectorFromSet(k8sLabels.Set{nfdv1alpha1.NodeFeatureObjNodeNameLabel: nodeName})
-	objs, err := m.nfdController.featureLister.List(sel)
+	sel := k8slabels.SelectorFromSet(k8slabels.Set{nfdv1alpha1.NodeFeatureObjNodeNameLabel: nodeName})
+	objs, err := m.featureLister.List(sel)
 	if err != nil {
 		return &nfdv1alpha1.NodeFeature{}, fmt.Errorf("failed to get NodeFeature resources for node %q: %w", nodeName, err)
 	}
@@ -694,7 +693,7 @@ func (m *nfdMaster) nfdAPIUpdateOneNode(cli k8sclient.Interface, node *corev1.No
 func (m *nfdMaster) nfdAPIUpdateAllNodeFeatureGroups() error {
 	klog.V(1).InfoS("updating all NodeFeatureGroups")
 
-	nodeFeatureGroupsList, err := m.nfdController.featureGroupLister.List(labels.Everything())
+	nodeFeatureGroupsList, err := m.featureGroupLister.List(k8slabels.Everything())
 	if err != nil {
 		return fmt.Errorf("failed to get NodeFeatureGroup objects: %w", err)
 	}
@@ -944,7 +943,7 @@ func (m *nfdMaster) processNodeFeatureRule(nodeName string, features *nfdv1alpha
 	labels := make(map[string]string)
 	annotations := make(map[string]string)
 	var taints []corev1.Taint
-	ruleSpecs, err := m.nfdController.ruleLister.List(k8sLabels.Everything())
+	ruleSpecs, err := m.ruleLister.List(k8slabels.Everything())
 	sort.Slice(ruleSpecs, func(i, j int) bool {
 		return ruleSpecs[i].Name < ruleSpecs[j].Name
 	})
diff --git a/pkg/nfd-topology-updater/nfd-topology-updater.go b/pkg/nfd-topology-updater/nfd-topology-updater.go
@@ -200,7 +200,7 @@ func (w *nfdTopologyUpdater) Run() error {
 		klog.InfoS("http server starting", "port", httpServer.Addr)
 		klog.InfoS("http server stopped", "exitCode", httpServer.ListenAndServe())
 	}()
-	defer httpServer.Close()
+	defer httpServer.Close() // nolint: errcheck
 
 	for {
 		select {
diff --git a/pkg/nfd-worker/nfd-worker-internal_test.go b/pkg/nfd-worker/nfd-worker-internal_test.go
@@ -129,7 +129,11 @@ func TestConfigParse(t *testing.T) {
 		})
 		// Create a temporary config file
 		f, err := os.CreateTemp("", "nfd-test-")
-		defer os.Remove(f.Name())
+		defer func() {
+			if err := os.Remove(f.Name()); err != nil {
+				t.Errorf("failed to remove temp file %s: %v", f.Name(), err)
+			}
+		}()
 		So(err, ShouldBeNil)
 		_, err = f.WriteString(`
 core:
@@ -145,7 +149,8 @@ sources:
   pci:
     deviceClassWhitelist:
       - "ff"`)
-		f.Close()
+		So(err, ShouldBeNil)
+		err = f.Close()
 		So(err, ShouldBeNil)
 
 		Convey("and a proper config file is specified", func() {
diff --git a/pkg/nfd-worker/nfd-worker.go b/pkg/nfd-worker/nfd-worker.go
@@ -216,7 +216,7 @@ func (i *infiniteTicker) Reset(d time.Duration) {
 	default:
 		// If the sleep interval is not a positive number the ticker will act
 		// as if it was set to an infinite duration by not ticking.
-		i.Ticker.Stop()
+		i.Stop()
 	}
 }
 
@@ -331,7 +331,7 @@ func (w *nfdWorker) Run() error {
 		klog.InfoS("http server starting", "port", httpServer.Addr)
 		klog.InfoS("http server stopped", "exitCode", httpServer.ListenAndServe())
 	}()
-	defer httpServer.Close()
+	defer httpServer.Close() // nolint: errcheck
 
 	for {
 		select {
@@ -356,7 +356,7 @@ func (w *nfdWorker) Stop() {
 func (c *coreConfig) sanitize() {
 	if c.SleepInterval.Duration > 0 && c.SleepInterval.Duration < time.Second {
 		klog.InfoS("too short sleep interval specified, forcing to 1s",
-			"sleepInterval", c.SleepInterval.Duration.String())
+			"sleepInterval", c.SleepInterval.String())
 		c.SleepInterval = utils.DurationVal{Duration: time.Second}
 	}
 }
diff --git a/pkg/nfd-worker/nfd-worker_test.go b/pkg/nfd-worker/nfd-worker_test.go
@@ -27,7 +27,6 @@ import (
 	"k8s.io/klog/v2"
 
 	fakenfdclient "sigs.k8s.io/node-feature-discovery/api/generated/clientset/versioned/fake"
-	"sigs.k8s.io/node-feature-discovery/api/nfd/v1alpha1"
 	nfdv1alpha1 "sigs.k8s.io/node-feature-discovery/api/nfd/v1alpha1"
 	"sigs.k8s.io/node-feature-discovery/pkg/features"
 	worker "sigs.k8s.io/node-feature-discovery/pkg/nfd-worker"
@@ -46,8 +45,8 @@ func TestRun(t *testing.T) {
 	initializeFeatureGates()
 	Convey("When running nfd-worker", t, func() {
 		Convey("When publishing features from fake source", func() {
-			os.Setenv("NODE_NAME", "fake-node")
-			os.Setenv("KUBERNETES_NAMESPACE", "fake-ns")
+			_ = os.Setenv("NODE_NAME", "fake-node")
+			_ = os.Setenv("KUBERNETES_NAMESPACE", "fake-ns")
 			args := &worker.Args{
 				Oneshot: true,
 				Overrides: worker.ConfigOverrideArgs{
@@ -86,16 +85,16 @@ func TestRun(t *testing.T) {
 							"feature.node.kubernetes.io/fake-fakefeature2": "true",
 							"feature.node.kubernetes.io/fake-fakefeature3": "true",
 						},
-						Features: v1alpha1.Features{
-							Flags: map[string]v1alpha1.FlagFeatureSet{
+						Features: nfdv1alpha1.Features{
+							Flags: map[string]nfdv1alpha1.FlagFeatureSet{
 								"fake.flag": {
-									Elements: map[string]v1alpha1.Nil{
+									Elements: map[string]nfdv1alpha1.Nil{
 										"flag_1": {},
 										"flag_2": {},
 										"flag_3": {}},
 								},
 							},
-							Attributes: map[string]v1alpha1.AttributeFeatureSet{
+							Attributes: map[string]nfdv1alpha1.AttributeFeatureSet{
 								"fake.attribute": {
 									Elements: map[string]string{
 										"attr_1": "true",
@@ -104,9 +103,9 @@ func TestRun(t *testing.T) {
 									},
 								},
 							},
-							Instances: map[string]v1alpha1.InstanceFeatureSet{
+							Instances: map[string]nfdv1alpha1.InstanceFeatureSet{
 								"fake.instance": {
-									Elements: []v1alpha1.InstanceFeature{
+									Elements: []nfdv1alpha1.InstanceFeature{
 										{Attributes: map[string]string{
 											"name":   "instance_1",
 											"attr_1": "true",
diff --git a/pkg/utils/featuregate/featuregate.go b/pkg/utils/featuregate/featuregate.go
@@ -175,9 +175,10 @@ func (f *featureGate) SetFromMap(m map[string]bool) error {
 		}
 		enabled[k] = v
 
-		if featureSpec.PreRelease == Deprecated {
+		switch featureSpec.PreRelease {
+		case Deprecated:
 			klog.InfoS("Setting deprecated feature gate. It will be removed in a future release.", "featureGateName", k, "featureGateValue", v)
-		} else if featureSpec.PreRelease == GA {
+		case GA:
 			klog.InfoS("Setting GA feature gate. It will be removed in a future release.", "featureGateName", k, "featureGateValue", v)
 		}
 	}
diff --git a/pkg/utils/featuregate/featuregate_test.go b/pkg/utils/featuregate/featuregate_test.go
@@ -84,7 +84,7 @@ func TestFeatureGateFlagDefaults(t *testing.T) {
 	const testBetaGate Feature = "TestBeta"
 
 	// Don't parse the flag, assert defaults are used.
-	var f *featureGate = NewFeatureGate()
+	var f = NewFeatureGate()
 	_ = f.Add(map[Feature]FeatureSpec{
 		testAlphaGate: {Default: false, PreRelease: Alpha},
 		testBetaGate:  {Default: true, PreRelease: Beta},
@@ -108,7 +108,7 @@ func TestFeatureGateKnownFeatures(t *testing.T) {
 	)
 
 	// Don't parse the flag, assert defaults are used.
-	var f *featureGate = NewFeatureGate()
+	var f = NewFeatureGate()
 	_ = f.Add(map[Feature]FeatureSpec{
 		testAlphaGate:      {Default: false, PreRelease: Alpha},
 		testBetaGate:       {Default: true, PreRelease: Beta},
diff --git a/pkg/utils/memory_resources_test.go b/pkg/utils/memory_resources_test.go
@@ -70,7 +70,11 @@ func TestGetMemoryResourceCounters(t *testing.T) {
 	if err != nil {
 		t.Errorf("failed to create temporary directory: %v", err)
 	}
-	defer os.RemoveAll(rootDir) // clean up
+	defer func() {
+		if err := os.RemoveAll(rootDir); err != nil {
+			t.Logf("failed to remove temporary directory %q: %v", rootDir, err)
+		}
+	}()
 
 	sysBusNodeBasepath = rootDir
 
diff --git a/source/cpu/security_amd64.go b/source/cpu/security_amd64.go
@@ -158,7 +158,7 @@ func getCgroupMiscCapacity(resource string) int64 {
 		miscCgroups := hostpath.SysfsDir.Path(miscCgroupsPath)
 		f, err := os.Open(miscCgroups)
 		if err == nil {
-			defer f.Close()
+			defer f.Close() // nolint: errcheck
 
 			return retrieveCgroupMiscCapacityValue(f, resource)
 		}
diff --git a/source/custom/api/conversion_test.go b/source/custom/api/conversion_test.go
@@ -21,7 +21,6 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	"sigs.k8s.io/node-feature-discovery/api/nfd/v1alpha1"
 	nfdv1alpha1 "sigs.k8s.io/node-feature-discovery/api/nfd/v1alpha1"
 )
 
@@ -178,7 +177,7 @@ func TestRuleConversion(t *testing.T) {
 					nfdv1alpha1.FeatureMatcherTerm{
 						Feature:          "fake.attribute",
 						MatchExpressions: nil,
-						MatchName:        &v1alpha1.MatchExpression{Op: v1alpha1.MatchInRegexp, Value: v1alpha1.MatchValue{"^elem-"}},
+						MatchName:        &nfdv1alpha1.MatchExpression{Op: nfdv1alpha1.MatchInRegexp, Value: nfdv1alpha1.MatchValue{"^elem-"}},
 					},
 				},
 			},
diff --git a/source/kernel/kconfig.go b/source/kernel/kconfig.go
@@ -35,14 +35,14 @@ func readKconfigGzip(filename string) ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer f.Close()
+	defer f.Close() // nolint: errcheck
 
 	// Uncompress data
 	r, err := gzip.NewReader(f)
 	if err != nil {
 		return nil, err
 	}
-	defer r.Close()
+	defer r.Close() // nolint: errcheck
 
 	return io.ReadAll(r)
 }
@@ -83,7 +83,7 @@ func parseKconfig(configPath string) (realKconfig, legacyKconfig map[string]stri
 
 	for _, path := range append([]string{configPath}, searchPaths...) {
 		if len(path) > 0 {
-			if ".gz" == filepath.Ext(path) {
+			if filepath.Ext(path) == ".gz" {
 				if raw, err = readKconfigGzip(path); err == nil {
 					break
 				}
diff --git a/test/e2e/gomega.go b/test/e2e/gomega.go

Original file line number	Diff line number	Diff line change
`@@ -68,7 +68,7 @@ func parseArgs(flags flag.FlagSet, osArgs ...string) nfdgarbagecollector.Args`
`68`	`68`
`69`	`69`	`_ = flags.Parse(osArgs)`
`70`	`70`	`if len(flags.Args()) > 0 {`
`71`		`- fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
	`71`	`+ _, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
`72`	`72`	`flags.Usage()`
`73`	`73`	`os.Exit(2)`
`74`	`74`	`}`
Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ func main() {`
`51`	`51`
`52`	`52`	`_ = flags.Parse(os.Args[1:])`
`53`	`53`	`if len(flags.Args()) > 0 {`
`54`		`- fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
	`54`	`+ _, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
`55`	`55`	`flags.Usage()`
`56`	`56`	`os.Exit(2)`
`57`	`57`	`}`
Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,7 @@ func parseArgs(flags flag.FlagSet, osArgs ...string) worker.Args {`
`77`	`77`
`78`	`78`	`_ = flags.Parse(osArgs)`
`79`	`79`	`if len(flags.Args()) > 0 {`
`80`		`- fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
	`80`	`+ _, _ = fmt.Fprintf(flags.Output(), "unknown command line argument: %s\n", flags.Args()[0])`
`81`	`81`	`flags.Usage()`
`82`	`82`	`os.Exit(2)`
`83`	`83`	`}`
Original file line number	Diff line number	Diff line change
`@@ -131,7 +131,7 @@ func (n *nfdGarbageCollector) deleteNodeHandler(object interface{}) {`
`131`	`131`	`klog.InfoS("cannot convert object to metav1.ObjectMeta", "object", object)`
`132`	`132`	`return`
`133`	`133`	`}`
`134`		`- nodeName := meta.ObjectMeta.GetName()`
	`134`	`+ nodeName := meta.GetName()`
`135`	`135`
`136`	`136`	`n.deleteNRT(nodeName)`
`137`	`137`
`@@ -177,10 +177,10 @@ func (n *nfdGarbageCollector) garbageCollect() {`
`177`	`177`	`handler(item)`
`178`	`178`	`}`
`179`	`179`
`180`		`- if rsp.ListMeta.Continue == "" {`
	`180`	`+ if rsp.Continue == "" {`
`181`	`181`	`break`
`182`	`182`	`}`
`183`		`- opts.Continue = rsp.ListMeta.Continue`
	`183`	`+ opts.Continue = rsp.Continue`
`184`	`184`	`}`
`185`	`185`	`}`
`186`	`186`
`@@ -269,7 +269,7 @@ func (n *nfdGarbageCollector) Run() error {`
`269`	`269`	`klog.InfoS("HTTP server stopped")`
`270`	`270`	`}`
`271`	`271`	`}()`
`272`		`- defer httpServer.Close()`
	`272`	`+ defer httpServer.Close() // nolint:errcheck`
`273`	`273`
`274`	`274`	`if err := n.startNodeInformer(); err != nil {`
`275`	`275`	`return err`