component-helpers: Support structured and contextual logging (#120637)

cmd/kubelet/app/server.go

@@ -871,7 +871,7 @@ func run(ctx context.Context, s *options.KubeletServer, kubeDeps *kubelet.Depend
 		klog.InfoS("Failed to ApplyOOMScoreAdj", "err", err)
 	}
 
-	if err := RunKubelet(s, kubeDeps, s.RunOnce); err != nil {
+	if err := RunKubelet(ctx, s, kubeDeps, s.RunOnce); err != nil {
 		return err
 	}
 
@@ -1202,7 +1202,7 @@ func setContentTypeForClient(cfg *restclient.Config, contentType string) {
 //	3 Standalone 'kubernetes' binary
 //
 // Eventually, #2 will be replaced with instances of #3
-func RunKubelet(kubeServer *options.KubeletServer, kubeDeps *kubelet.Dependencies, runOnce bool) error {
+func RunKubelet(ctx context.Context, kubeServer *options.KubeletServer, kubeDeps *kubelet.Dependencies, runOnce bool) error {
 	hostname, err := nodeutil.GetHostname(kubeServer.HostnameOverride)
 	if err != nil {
 		return err
@@ -1214,12 +1214,15 @@ func RunKubelet(kubeServer *options.KubeletServer, kubeDeps *kubelet.Dependencie
 	}
 	hostnameOverridden := len(kubeServer.HostnameOverride) > 0
 	// Setup event recorder if required.
-	makeEventRecorder(context.TODO(), kubeDeps, nodeName)
+	makeEventRecorder(ctx, kubeDeps, nodeName)
 
-	nodeIPs, err := nodeutil.ParseNodeIPArgument(kubeServer.NodeIP, kubeServer.CloudProvider)
+	nodeIPs, invalidNodeIps, err := nodeutil.ParseNodeIPArgument(kubeServer.NodeIP, kubeServer.CloudProvider)
 	if err != nil {
 		return fmt.Errorf("bad --node-ip %q: %v", kubeServer.NodeIP, err)
 	}
+	if len(invalidNodeIps) != 0 {
+		klog.FromContext(ctx).Info("Could not parse some node IP(s), ignoring them", "IPs", invalidNodeIps)
+	}
 
 	capabilities.Initialize(capabilities.Capabilities{
 		AllowPrivileged: true,

cmd/kubemark/app/hollow_node.go

@@ -157,7 +157,7 @@ func NewHollowNodeCommand() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			verflag.PrintAndExitIfRequested()
 			cliflag.PrintFlags(cmd.Flags())
-			return run(s)
+			return run(cmd.Context(), s)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
 			for _, arg := range args {
@@ -176,7 +176,7 @@ func NewHollowNodeCommand() *cobra.Command {
 	return cmd
 }
 
-func run(config *hollowNodeConfig) error {
+func run(ctx context.Context, config *hollowNodeConfig) error {
 	// To help debugging, immediately log version and print flags.
 	klog.Infof("Version: %+v", version.Get())
 
@@ -264,7 +264,7 @@ func run(config *hollowNodeConfig) error {
 			runtimeService,
 			containerManager,
 		)
-		hollowKubelet.Run()
+		hollowKubelet.Run(ctx)
 	}
 
 	if config.Morph == "proxy" {

cmd/kubemark/app/hollow_node_test.go

@@ -24,6 +24,8 @@ import (
 	"path/filepath"
 	"testing"
 	"time"
+
+	"k8s.io/kubernetes/test/utils/ktesting"
 )
 
 const fakeKubeconfig = `
@@ -80,7 +82,8 @@ func TestHollowNode(t *testing.T) {
 			go func() {
 				data, err := os.ReadFile(kubeconfigPath)
 				t.Logf("read %d, err=%v\n", len(data), err)
-				errCh <- run(s)
+				ctx := ktesting.Init(t)
+				errCh <- run(ctx, s)
 			}()
 
 			select {

hack/golangci-hints.yaml

@@ -131,6 +131,7 @@ linters-settings: # please keep this alphabetized
           contextual k8s.io/client-go/metadata/.*
           contextual k8s.io/client-go/tools/events/.*
           contextual k8s.io/client-go/tools/record/.*
+          contextual k8s.io/component-helpers/.*
           contextual k8s.io/dynamic-resource-allocation/.*
           contextual k8s.io/kubernetes/cmd/kube-proxy/.*
           contextual k8s.io/kubernetes/cmd/kube-scheduler/.*

hack/golangci-strict.yaml

@@ -177,6 +177,7 @@ linters-settings: # please keep this alphabetized
           contextual k8s.io/client-go/metadata/.*
           contextual k8s.io/client-go/tools/events/.*
           contextual k8s.io/client-go/tools/record/.*
+          contextual k8s.io/component-helpers/.*
           contextual k8s.io/dynamic-resource-allocation/.*
           contextual k8s.io/kubernetes/cmd/kube-proxy/.*
           contextual k8s.io/kubernetes/cmd/kube-scheduler/.*

hack/golangci.yaml

@@ -180,6 +180,7 @@ linters-settings: # please keep this alphabetized
           contextual k8s.io/client-go/metadata/.*
           contextual k8s.io/client-go/tools/events/.*
           contextual k8s.io/client-go/tools/record/.*
+          contextual k8s.io/component-helpers/.*
           contextual k8s.io/dynamic-resource-allocation/.*
           contextual k8s.io/kubernetes/cmd/kube-proxy/.*
           contextual k8s.io/kubernetes/cmd/kube-scheduler/.*

hack/logcheck.conf

@@ -28,6 +28,7 @@ contextual k8s.io/apimachinery/pkg/util/runtime/.*
 contextual k8s.io/client-go/metadata/.*
 contextual k8s.io/client-go/tools/events/.*
 contextual k8s.io/client-go/tools/record/.*
+contextual k8s.io/component-helpers/.*
 contextual k8s.io/dynamic-resource-allocation/.*
 contextual k8s.io/kubernetes/cmd/kube-proxy/.*
 contextual k8s.io/kubernetes/cmd/kube-scheduler/.*

pkg/controller/nodeipam/ipam/cidr_allocator.go

@@ -86,7 +86,7 @@ type CIDRAllocator interface {
 	// AllocateOrOccupyCIDR looks at the given node, assigns it a valid
 	// CIDR if it doesn't currently have one or mark the CIDR as used if
 	// the node already have one.
-	AllocateOrOccupyCIDR(logger klog.Logger, node *v1.Node) error
+	AllocateOrOccupyCIDR(ctx context.Context, node *v1.Node) error
 	// ReleaseCIDR releases the CIDR of the removed node.
 	ReleaseCIDR(logger klog.Logger, node *v1.Node) error
 	// Run starts all the working logic of the allocator.

pkg/controller/nodeipam/ipam/cloud_cidr_allocator.go

@@ -117,18 +117,18 @@ func NewCloudCIDRAllocator(ctx context.Context, client clientset.Interface, clou
 	nodeInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
 		AddFunc: controllerutil.CreateAddNodeHandler(
 			func(node *v1.Node) error {
-				return ca.AllocateOrOccupyCIDR(logger, node)
+				return ca.AllocateOrOccupyCIDR(ctx, node)
 			}),
 		UpdateFunc: controllerutil.CreateUpdateNodeHandler(func(_, newNode *v1.Node) error {
 			if newNode.Spec.PodCIDR == "" {
-				return ca.AllocateOrOccupyCIDR(logger, newNode)
+				return ca.AllocateOrOccupyCIDR(ctx, newNode)
 			}
 			// Even if PodCIDR is assigned, but NetworkUnavailable condition is
 			// set to true, we need to process the node to set the condition.
 			networkUnavailableTaint := &v1.Taint{Key: v1.TaintNodeNetworkUnavailable, Effect: v1.TaintEffectNoSchedule}
 			_, cond := controllerutil.GetNodeCondition(&newNode.Status, v1.NodeNetworkUnavailable)
 			if cond == nil || cond.Status != v1.ConditionFalse || utiltaints.TaintExists(newNode.Spec.Taints, networkUnavailableTaint) {
-				return ca.AllocateOrOccupyCIDR(logger, newNode)
+				return ca.AllocateOrOccupyCIDR(ctx, newNode)
 			}
 			return nil
 		}),
@@ -173,7 +173,7 @@ func (ca *cloudCIDRAllocator) worker(ctx context.Context) {
 				logger.Info("Channel nodeCIDRUpdateChannel was unexpectedly closed")
 				return
 			}
-			if err := ca.updateCIDRAllocation(logger, workItem); err == nil {
+			if err := ca.updateCIDRAllocation(ctx, workItem); err == nil {
 				logger.V(3).Info("Updated CIDR", "workItem", workItem)
 			} else {
 				logger.Error(err, "Error updating CIDR", "workItem", workItem)
@@ -243,10 +243,12 @@ func (ca *cloudCIDRAllocator) removeNodeFromProcessing(nodeName string) {
 // WARNING: If you're adding any return calls or defer any more work from this
 // function you have to make sure to update nodesInProcessing properly with the
 // disposition of the node when the work is done.
-func (ca *cloudCIDRAllocator) AllocateOrOccupyCIDR(logger klog.Logger, node *v1.Node) error {
+func (ca *cloudCIDRAllocator) AllocateOrOccupyCIDR(ctx context.Context, node *v1.Node) error {
 	if node == nil {
 		return nil
 	}
+
+	logger := klog.FromContext(ctx)
 	if !ca.insertNodeToProcessing(node.Name) {
 		logger.V(2).Info("Node is already in a process of CIDR assignment", "node", klog.KObj(node))
 		return nil
@@ -258,7 +260,8 @@ func (ca *cloudCIDRAllocator) AllocateOrOccupyCIDR(logger klog.Logger, node *v1.
 }
 
 // updateCIDRAllocation assigns CIDR to Node and sends an update to the API server.
-func (ca *cloudCIDRAllocator) updateCIDRAllocation(logger klog.Logger, nodeName string) error {
+func (ca *cloudCIDRAllocator) updateCIDRAllocation(ctx context.Context, nodeName string) error {
+	logger := klog.FromContext(ctx)
 	node, err := ca.nodeLister.Get(nodeName)
 	if err != nil {
 		if errors.IsNotFound(err) {
@@ -305,7 +308,7 @@ func (ca *cloudCIDRAllocator) updateCIDRAllocation(logger klog.Logger, nodeName
 			// See https://github.com/kubernetes/kubernetes/pull/42147#discussion_r103357248
 		}
 		for i := 0; i < cidrUpdateRetries; i++ {
-			if err = nodeutil.PatchNodeCIDRs(ca.client, types.NodeName(node.Name), cidrStrings); err == nil {
+			if err = nodeutil.PatchNodeCIDRs(ctx, ca.client, types.NodeName(node.Name), cidrStrings); err == nil {
 				logger.Info("Set the node PodCIDRs", "node", klog.KObj(node), "cidrStrings", cidrStrings)
 				break
 			}

pkg/controller/nodeipam/ipam/cloud_cidr_allocator_test.go

@@ -51,14 +51,16 @@ func TestBoundedRetries(t *testing.T) {
 		nodesSynced:       sharedInfomer.Core().V1().Nodes().Informer().HasSynced,
 		nodesInProcessing: map[string]*nodeProcessingInfo{},
 	}
-	logger, ctx := ktesting.NewTestContext(t)
+	_, ctx := ktesting.NewTestContext(t)
 	go ca.worker(ctx)
 	nodeName := "testNode"
-	ca.AllocateOrOccupyCIDR(logger, &v1.Node{
+	if err := ca.AllocateOrOccupyCIDR(ctx, &v1.Node{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: nodeName,
 		},
-	})
+	}); err != nil {
+		t.Errorf("unexpected error in AllocateOrOccupyCIDR: %v", err)
+	}
 	for hasNodeInProcessing(ca, nodeName) {
 		// wait for node to finish processing (should terminate and not time out)
 	}

pkg/controller/nodeipam/ipam/range_allocator.go

@@ -61,6 +61,8 @@ type rangeAllocator struct {
 	queue workqueue.RateLimitingInterface
 }
 
+var _ CIDRAllocator = &rangeAllocator{}
+
 // NewCIDRRangeAllocator returns a CIDRAllocator to allocate CIDRs for node (one from each of clusterCIDRs)
 // Caller must ensure subNetMaskSize is not less than cluster CIDR mask size.
 // Caller must always pass in a list of existing nodes so the new allocator.
@@ -228,7 +230,7 @@ func (r *rangeAllocator) processNextNodeWorkItem(ctx context.Context) bool {
 		}
 		// Run the syncHandler, passing it the namespace/name string of the
 		// Foo resource to be synced.
-		if err := r.syncNode(logger, key); err != nil {
+		if err := r.syncNode(ctx, key); err != nil {
 			// Put the item back on the queue to handle any transient errors.
 			r.queue.AddRateLimited(key)
 			return fmt.Errorf("error syncing '%s': %s, requeuing", key, err.Error())
@@ -248,7 +250,8 @@ func (r *rangeAllocator) processNextNodeWorkItem(ctx context.Context) bool {
 	return true
 }
 
-func (r *rangeAllocator) syncNode(logger klog.Logger, key string) error {
+func (r *rangeAllocator) syncNode(ctx context.Context, key string) error {
+	logger := klog.FromContext(ctx)
 	startTime := time.Now()
 	defer func() {
 		logger.V(4).Info("Finished syncing Node request", "node", key, "elapsed", time.Since(startTime))
@@ -269,7 +272,7 @@ func (r *rangeAllocator) syncNode(logger klog.Logger, key string) error {
 		logger.V(3).Info("node is being deleted", "node", key)
 		return r.ReleaseCIDR(logger, node)
 	}
-	return r.AllocateOrOccupyCIDR(logger, node)
+	return r.AllocateOrOccupyCIDR(ctx, node)
 }
 
 // marks node.PodCIDRs[...] as used in allocator's tracked cidrSet
@@ -299,7 +302,7 @@ func (r *rangeAllocator) occupyCIDRs(node *v1.Node) error {
 // WARNING: If you're adding any return calls or defer any more work from this
 // function you have to make sure to update nodesInProcessing properly with the
 // disposition of the node when the work is done.
-func (r *rangeAllocator) AllocateOrOccupyCIDR(logger klog.Logger, node *v1.Node) error {
+func (r *rangeAllocator) AllocateOrOccupyCIDR(ctx context.Context, node *v1.Node) error {
 	if node == nil {
 		return nil
 	}
@@ -308,6 +311,7 @@ func (r *rangeAllocator) AllocateOrOccupyCIDR(logger klog.Logger, node *v1.Node)
 		return r.occupyCIDRs(node)
 	}
 
+	logger := klog.FromContext(ctx)
 	allocatedCIDRs := make([]*net.IPNet, len(r.cidrSets))
 
 	for idx := range r.cidrSets {
@@ -321,7 +325,7 @@ func (r *rangeAllocator) AllocateOrOccupyCIDR(logger klog.Logger, node *v1.Node)
 
 	//queue the assignment
 	logger.V(4).Info("Putting node with CIDR into the work queue", "node", klog.KObj(node), "CIDRs", allocatedCIDRs)
-	return r.updateCIDRsAllocation(logger, node.Name, allocatedCIDRs)
+	return r.updateCIDRsAllocation(ctx, node.Name, allocatedCIDRs)
 }
 
 // ReleaseCIDR marks node.podCIDRs[...] as unused in our tracked cidrSets
@@ -373,9 +377,10 @@ func (r *rangeAllocator) filterOutServiceRange(logger klog.Logger, serviceCIDR *
 }
 
 // updateCIDRsAllocation assigns CIDR to Node and sends an update to the API server.
-func (r *rangeAllocator) updateCIDRsAllocation(logger klog.Logger, nodeName string, allocatedCIDRs []*net.IPNet) error {
+func (r *rangeAllocator) updateCIDRsAllocation(ctx context.Context, nodeName string, allocatedCIDRs []*net.IPNet) error {
 	var err error
 	var node *v1.Node
+	logger := klog.FromContext(ctx)
 	cidrsString := ipnetToStringList(allocatedCIDRs)
 	node, err = r.nodeLister.Get(nodeName)
 	if err != nil {
@@ -413,7 +418,7 @@ func (r *rangeAllocator) updateCIDRsAllocation(logger klog.Logger, nodeName stri
 
 	// If we reached here, it means that the node has no CIDR currently assigned. So we set it.
 	for i := 0; i < cidrUpdateRetries; i++ {
-		if err = nodeutil.PatchNodeCIDRs(r.client, types.NodeName(node.Name), cidrsString); err == nil {
+		if err = nodeutil.PatchNodeCIDRs(ctx, r.client, types.NodeName(node.Name), cidrsString); err == nil {
 			logger.Info("Set node PodCIDR", "node", klog.KObj(node), "podCIDRs", cidrsString)
 			return nil
 		}

pkg/controller/nodeipam/ipam/range_allocator_test.go

@@ -509,7 +509,7 @@ func TestAllocateOrOccupyCIDRSuccess(t *testing.T) {
 	}
 
 	// test function
-	logger, tCtx := ktesting.NewTestContext(t)
+	_, tCtx := ktesting.NewTestContext(t)
 	testFunc := func(tc testCase) {
 		fakeNodeInformer := test.FakeNodeInformer(tc.fakeNodeHandler)
 		nodeList, _ := tc.fakeNodeHandler.List(tCtx, metav1.ListOptions{})
@@ -547,7 +547,7 @@ func TestAllocateOrOccupyCIDRSuccess(t *testing.T) {
 			if node.Spec.PodCIDRs == nil {
 				updateCount++
 			}
-			if err := allocator.AllocateOrOccupyCIDR(logger, node); err != nil {
+			if err := allocator.AllocateOrOccupyCIDR(tCtx, node); err != nil {
 				t.Errorf("%v: unexpected error in AllocateOrOccupyCIDR: %v", tc.description, err)
 			}
 		}
@@ -610,7 +610,7 @@ func TestAllocateOrOccupyCIDRFailure(t *testing.T) {
 			},
 		},
 	}
-	logger, tCtx := ktesting.NewTestContext(t)
+	_, tCtx := ktesting.NewTestContext(t)
 	testFunc := func(tc testCase) {
 		// Initialize the range allocator.
 		allocator, err := NewCIDRRangeAllocator(tCtx, tc.fakeNodeHandler, test.FakeNodeInformer(tc.fakeNodeHandler), tc.allocatorParams, nil)
@@ -639,7 +639,7 @@ func TestAllocateOrOccupyCIDRFailure(t *testing.T) {
 				}
 			}
 		}
-		if err := allocator.AllocateOrOccupyCIDR(logger, tc.fakeNodeHandler.Existing[0]); err == nil {
+		if err := allocator.AllocateOrOccupyCIDR(tCtx, tc.fakeNodeHandler.Existing[0]); err == nil {
 			t.Errorf("%v: unexpected success in AllocateOrOccupyCIDR: %v", tc.description, err)
 		}
 		// We don't expect any updates, so just sleep for some time
@@ -782,7 +782,7 @@ func TestReleaseCIDRSuccess(t *testing.T) {
 			}
 		}
 
-		err := allocator.AllocateOrOccupyCIDR(logger, tc.fakeNodeHandler.Existing[0])
+		err := allocator.AllocateOrOccupyCIDR(tCtx, tc.fakeNodeHandler.Existing[0])
 		if len(tc.expectedAllocatedCIDRFirstRound) != 0 {
 			if err != nil {
 				t.Fatalf("%v: unexpected error in AllocateOrOccupyCIDR: %v", tc.description, err)
@@ -812,7 +812,7 @@ func TestReleaseCIDRSuccess(t *testing.T) {
 				t.Fatalf("%v: unexpected error in ReleaseCIDR: %v", tc.description, err)
 			}
 		}
-		if err = allocator.AllocateOrOccupyCIDR(logger, tc.fakeNodeHandler.Existing[0]); err != nil {
+		if err = allocator.AllocateOrOccupyCIDR(tCtx, tc.fakeNodeHandler.Existing[0]); err != nil {
 			t.Fatalf("%v: unexpected error in AllocateOrOccupyCIDR: %v", tc.description, err)
 		}
 		if err := test.WaitForUpdatedNodeWithTimeout(tc.fakeNodeHandler, 1, wait.ForeverTestTimeout); err != nil {

pkg/kubemark/hollow_kubelet.go

@@ -17,6 +17,7 @@ limitations under the License.
 package kubemark
 
 import (
+	"context"
 	"fmt"
 	"time"
 
@@ -126,8 +127,8 @@ func NewHollowKubelet(
 }
 
 // Starts this HollowKubelet and blocks.
-func (hk *HollowKubelet) Run() {
+func (hk *HollowKubelet) Run(ctx context.Context) {
-	if err := kubeletapp.RunKubelet(&options.KubeletServer{
+	if err := kubeletapp.RunKubelet(ctx, &options.KubeletServer{
 		KubeletFlags:         *hk.KubeletFlags,
 		KubeletConfiguration: *hk.KubeletConfiguration,
 	}, hk.KubeletDeps, false); err != nil {

staging/src/k8s.io/component-helpers/apimachinery/lease/controller_test.go

@@ -198,7 +198,8 @@ func TestNewNodeLease(t *testing.T) {
 
 	for _, tc := range cases {
 		t.Run(tc.desc, func(t *testing.T) {
-			tc.controller.newLeasePostProcessFunc = setNodeOwnerFunc(tc.controller.client, node.Name)
+			logger, _ := ktesting.NewTestContext(t)
+			tc.controller.newLeasePostProcessFunc = setNodeOwnerFunc(logger, tc.controller.client, node.Name)
 			tc.controller.leaseNamespace = corev1.NamespaceNodeLease
 			newLease, _ := tc.controller.newLease(tc.base)
 			if newLease == tc.base {
@@ -286,7 +287,7 @@ func TestRetryUpdateNodeLease(t *testing.T) {
 	}
 	for _, tc := range cases {
 		t.Run(tc.desc, func(t *testing.T) {
-			_, ctx := ktesting.NewTestContext(t)
+			logger, ctx := ktesting.NewTestContext(t)
 			cl := tc.client
 			if tc.updateReactor != nil {
 				cl.PrependReactor("update", "leases", tc.updateReactor)
@@ -302,7 +303,7 @@ func TestRetryUpdateNodeLease(t *testing.T) {
 				leaseNamespace:             corev1.NamespaceNodeLease,
 				leaseDurationSeconds:       10,
 				onRepeatedHeartbeatFailure: tc.onRepeatedHeartbeatFailure,
-				newLeasePostProcessFunc:    setNodeOwnerFunc(cl, node.Name),
+				newLeasePostProcessFunc:    setNodeOwnerFunc(logger, cl, node.Name),
 			}
 			if err := c.retryUpdateLease(ctx, nil); tc.expectErr != (err != nil) {
 				t.Fatalf("got %v, expected %v", err != nil, tc.expectErr)
@@ -422,7 +423,7 @@ func TestUpdateUsingLatestLease(t *testing.T) {
 	}
 	for _, tc := range cases {
 		t.Run(tc.desc, func(t *testing.T) {
-			_, ctx := ktesting.NewTestContext(t)
+			logger, ctx := ktesting.NewTestContext(t)
 			cl := fake.NewSimpleClientset(tc.existingObjs...)
 			if tc.updateReactor != nil {
 				cl.PrependReactor("update", "leases", tc.updateReactor)
@@ -441,7 +442,7 @@ func TestUpdateUsingLatestLease(t *testing.T) {
 				leaseNamespace:          corev1.NamespaceNodeLease,
 				leaseDurationSeconds:    10,
 				latestLease:             tc.latestLease,
-				newLeasePostProcessFunc: setNodeOwnerFunc(cl, node.Name),
+				newLeasePostProcessFunc: setNodeOwnerFunc(logger, cl, node.Name),
 			}
 
 			c.sync(ctx)
@@ -461,7 +462,7 @@ func TestUpdateUsingLatestLease(t *testing.T) {
 
 // setNodeOwnerFunc helps construct a newLeasePostProcessFunc which sets
 // a node OwnerReference to the given lease object
-func setNodeOwnerFunc(c clientset.Interface, nodeName string) func(lease *coordinationv1.Lease) error {
+func setNodeOwnerFunc(logger klog.Logger, c clientset.Interface, nodeName string) func(lease *coordinationv1.Lease) error {
 	return func(lease *coordinationv1.Lease) error {
 		// Setting owner reference needs node's UID. Note that it is different from
 		// kubelet.nodeRef.UID. When lease is initially created, it is possible that
@@ -478,7 +479,7 @@ func setNodeOwnerFunc(c clientset.Interface, nodeName string) func(lease *coordi
 					},
 				}
 			} else {
-				klog.Errorf("failed to get node %q when trying to set owner ref to the node lease: %v", nodeName, err)
+				logger.Error(err, "failed to get node when trying to set owner ref to the node lease", "node", nodeName)
 				return err
 			}
 		}

staging/src/k8s.io/component-helpers/node/util/cidr.go

@@ -37,7 +37,7 @@ type nodeSpecForMergePatch struct {
 }
 
 // PatchNodeCIDRs patches the specified node.CIDR=cidrs[0] and node.CIDRs to the given value.
-func PatchNodeCIDRs(c clientset.Interface, node types.NodeName, cidrs []string) error {
+func PatchNodeCIDRs(ctx context.Context, c clientset.Interface, node types.NodeName, cidrs []string) error {
 	// set the pod cidrs list and set the old pod cidr field
 	patch := nodeForCIDRMergePatch{
 		Spec: nodeSpecForMergePatch{
@@ -50,8 +50,8 @@ func PatchNodeCIDRs(c clientset.Interface, node types.NodeName, cidrs []string)
 	if err != nil {
 		return fmt.Errorf("failed to json.Marshal CIDR: %v", err)
 	}
-	klog.V(4).Infof("cidrs patch bytes are:%s", string(patchBytes))
+	klog.FromContext(ctx).V(4).Info("cidrs patch bytes", "patchBytes", string(patchBytes))
-	if _, err := c.CoreV1().Nodes().Patch(context.TODO(), string(node), types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}); err != nil {
+	if _, err := c.CoreV1().Nodes().Patch(ctx, string(node), types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}); err != nil {
 		return fmt.Errorf("failed to patch node CIDR: %v", err)
 	}
 	return nil

staging/src/k8s.io/component-helpers/node/util/ips.go

@@ -21,7 +21,6 @@ import (
 	"net"
 	"strings"
 
-	"k8s.io/klog/v2"
 	netutils "k8s.io/utils/net"
 )
 
@@ -31,8 +30,9 @@ const (
 )
 
 // parseNodeIP implements ParseNodeIPArgument and ParseNodeIPAnnotation
-func parseNodeIP(nodeIP string, allowDual, sloppy bool) ([]net.IP, error) {
+func parseNodeIP(nodeIP string, allowDual, sloppy bool) ([]net.IP, []string, error) {
 	var nodeIPs []net.IP
+	var invalidIPs []string
 	if nodeIP != "" || !sloppy {
 		for _, ip := range strings.Split(nodeIP, ",") {
 			if sloppy {
@@ -40,10 +40,9 @@ func parseNodeIP(nodeIP string, allowDual, sloppy bool) ([]net.IP, error) {
 			}
 			parsedNodeIP := netutils.ParseIPSloppy(ip)
 			if parsedNodeIP == nil {
-				if sloppy {
+				invalidIPs = append(invalidIPs, ip)
-					klog.InfoS("Could not parse node IP. Ignoring", "IP", ip)
+				if !sloppy {
-				} else {
+					return nil, invalidIPs, fmt.Errorf("could not parse %q", ip)
-					return nil, fmt.Errorf("could not parse %q", ip)
 				}
 			} else {
 				nodeIPs = append(nodeIPs, parsedNodeIP)
@@ -52,20 +51,22 @@ func parseNodeIP(nodeIP string, allowDual, sloppy bool) ([]net.IP, error) {
 	}
 
 	if len(nodeIPs) > 2 || (len(nodeIPs) == 2 && netutils.IsIPv6(nodeIPs[0]) == netutils.IsIPv6(nodeIPs[1])) {
-		return nil, fmt.Errorf("must contain either a single IP or a dual-stack pair of IPs")
+		return nil, invalidIPs, fmt.Errorf("must contain either a single IP or a dual-stack pair of IPs")
 	} else if len(nodeIPs) == 2 && !allowDual {
-		return nil, fmt.Errorf("dual-stack not supported in this configuration")
+		return nil, invalidIPs, fmt.Errorf("dual-stack not supported in this configuration")
 	} else if len(nodeIPs) == 2 && (nodeIPs[0].IsUnspecified() || nodeIPs[1].IsUnspecified()) {
-		return nil, fmt.Errorf("dual-stack node IP cannot include '0.0.0.0' or '::'")
+		return nil, invalidIPs, fmt.Errorf("dual-stack node IP cannot include '0.0.0.0' or '::'")
 	}
 
-	return nodeIPs, nil
+	return nodeIPs, invalidIPs, nil
 }
 
-// ParseNodeIPArgument parses kubelet's --node-ip argument. If nodeIP contains invalid
+// ParseNodeIPArgument parses kubelet's --node-ip argument.
-// values, they will be logged and ignored. Dual-stack node IPs are allowed if
+// If nodeIP contains invalid values, they will be returned as strings.
-// cloudProvider is unset or `"external"`.
+// This is done also when an error is returned.
-func ParseNodeIPArgument(nodeIP, cloudProvider string) ([]net.IP, error) {
+// The caller then can decide what to do with the invalid values.
+// Dual-stack node IPs are allowed if cloudProvider is unset or `"external"`.
+func ParseNodeIPArgument(nodeIP, cloudProvider string) ([]net.IP, []string, error) {
 	var allowDualStack bool
 	if cloudProvider == cloudProviderNone || cloudProvider == cloudProviderExternal {
 		allowDualStack = true
@@ -77,5 +78,6 @@ func ParseNodeIPArgument(nodeIP, cloudProvider string) ([]net.IP, error) {
 // which can be either a single IP address or a comma-separated pair of IP addresses.
 // Unlike with ParseNodeIPArgument, invalid values are considered an error.
 func ParseNodeIPAnnotation(nodeIP string) ([]net.IP, error) {
-	return parseNodeIP(nodeIP, true, false)
+	nodeIps, _, err := parseNodeIP(nodeIP, true, false)
+	return nodeIps, err
 }

staging/src/k8s.io/component-helpers/node/util/ips_test.go

@@ -31,6 +31,7 @@ func TestParseNodeIPArgument(t *testing.T) {
 		desc     string
 		in       string
 		out      []net.IP
+		invalids []string
 		err      string
 		ssErr    string
 	}{
@@ -43,11 +44,13 @@ func TestParseNodeIPArgument(t *testing.T) {
 			desc:     "just whitespace (ignored)",
 			in:       " ",
 			out:      nil,
+			invalids: []string{""},
 		},
 		{
 			desc:     "garbage (ignored)",
 			in:       "blah",
 			out:      nil,
+			invalids: []string{"blah"},
 		},
 		{
 			desc: "single IPv4",
@@ -74,11 +77,13 @@ func TestParseNodeIPArgument(t *testing.T) {
 			desc:     "single IPv4 invalid (ignored)",
 			in:       "1.2.3",
 			out:      nil,
+			invalids: []string{"1.2.3"},
 		},
 		{
 			desc:     "single IPv4 CIDR (ignored)",
 			in:       "1.2.3.0/24",
 			out:      nil,
+			invalids: []string{"1.2.3.0/24"},
 		},
 		{
 			desc: "single IPv4 unspecified",
@@ -93,6 +98,7 @@ func TestParseNodeIPArgument(t *testing.T) {
 			out: []net.IP{
 				netutils.ParseIPSloppy("1.2.3.4"),
 			},
+			invalids: []string{"not-an-IPv6-address"},
 		},
 		{
 			desc: "single IPv6",
@@ -155,6 +161,7 @@ func TestParseNodeIPArgument(t *testing.T) {
 				netutils.ParseIPSloppy("abcd::ef01"),
 				netutils.ParseIPSloppy("1.2.3.4"),
 			},
+			invalids: []string{"something else"},
 			ssErr:    "not supported in this configuration",
 		},
 		{
@@ -177,9 +184,10 @@ func TestParseNodeIPArgument(t *testing.T) {
 		for _, conf := range configurations {
 			desc := fmt.Sprintf("%s, cloudProvider=%q", tc.desc, conf.cloudProvider)
 			t.Run(desc, func(t *testing.T) {
-				parsed, err := ParseNodeIPArgument(tc.in, conf.cloudProvider)
+				parsed, invalidIPs, err := ParseNodeIPArgument(tc.in, conf.cloudProvider)
 
 				expectedOut := tc.out
+				expectedInvalids := tc.invalids
 				expectedErr := tc.err
 
 				if !conf.dualStackSupported {
@@ -194,6 +202,9 @@ func TestParseNodeIPArgument(t *testing.T) {
 				if !reflect.DeepEqual(parsed, expectedOut) {
 					t.Errorf("expected %#v, got %#v", expectedOut, parsed)
 				}
+				if !reflect.DeepEqual(invalidIPs, expectedInvalids) {
+					t.Errorf("[invalidIps] expected %#v, got %#v", expectedInvalids, invalidIPs)
+				}
 				if err != nil {
 					if expectedErr == "" {
 						t.Errorf("unexpected error %v", err)