mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-22 03:11:40 +00:00
Add support for removing unsupported huge page sizes
When kubelet is restarted, it will now remove the resources for huge page sizes no longer supported. This is required when: - node disables huge pages - changing the default huge page size in older versions of linux (because it will then only support the newly set default). - Software updates that change what sizes are supported (eg. by changing boot parameters).
This commit is contained in:
Odin Ugedal
parent
21d4d13d98
commit
2830827442
@ -31,6 +31,7 @@ import (
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/sets"
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cloudprovider "k8s.io/cloud-provider"
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cloudproviderapi "k8s.io/cloud-provider/api"
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"k8s.io/klog"
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@ -117,6 +118,7 @@ func (kl *Kubelet) tryRegisterWithAPIServer(node *v1.Node) bool {
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requiresUpdate := kl.reconcileCMADAnnotationWithExistingNode(node, existingNode)
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requiresUpdate = kl.updateDefaultLabels(node, existingNode) || requiresUpdate
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requiresUpdate = kl.reconcileExtendedResource(node, existingNode) || requiresUpdate
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requiresUpdate = kl.reconcileHugePageResource(node, existingNode) || requiresUpdate
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if requiresUpdate {
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if _, _, err := nodeutil.PatchNodeStatus(kl.kubeClient.CoreV1(), types.NodeName(kl.nodeName), originalNode, existingNode); err != nil {
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klog.Errorf("Unable to reconcile node %q with API server: error updating node: %v", kl.nodeName, err)
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@ -127,6 +129,53 @@ func (kl *Kubelet) tryRegisterWithAPIServer(node *v1.Node) bool {
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return true
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}
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// reconcileHugePageResource will update huge page capacity for each page size and remove huge page sizes no longer supported
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func (kl *Kubelet) reconcileHugePageResource(initialNode, existingNode *v1.Node) bool {
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requiresUpdate := false
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supportedHugePageResources := sets.String{}
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for resourceName := range initialNode.Status.Capacity {
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if !v1helper.IsHugePageResourceName(resourceName) {
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continue
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}
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supportedHugePageResources.Insert(string(resourceName))
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initialCapacity := initialNode.Status.Capacity[resourceName]
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initialAllocatable := initialNode.Status.Allocatable[resourceName]
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capacity, resourceIsSupported := existingNode.Status.Capacity[resourceName]
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allocatable := existingNode.Status.Allocatable[resourceName]
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// Add or update capacity if it the size was previously unsupported or has changed
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if !resourceIsSupported || capacity.Cmp(initialCapacity) != 0 {
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existingNode.Status.Capacity[resourceName] = initialCapacity.DeepCopy()
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requiresUpdate = true
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}
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// Add or update allocatable if it the size was previously unsupported or has changed
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if !resourceIsSupported || allocatable.Cmp(initialAllocatable) != 0 {
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existingNode.Status.Allocatable[resourceName] = initialAllocatable.DeepCopy()
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requiresUpdate = true
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}
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}
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for resourceName := range existingNode.Status.Capacity {
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if !v1helper.IsHugePageResourceName(resourceName) {
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continue
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}
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// If huge page size no longer is supported, we remove it from the node
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if !supportedHugePageResources.Has(string(resourceName)) {
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delete(existingNode.Status.Capacity, resourceName)
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delete(existingNode.Status.Allocatable, resourceName)
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klog.Infof("Removing now unsupported huge page resource named: %s", resourceName)
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requiresUpdate = true
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}
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}
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return requiresUpdate
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}
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// Zeros out extended resource capacity during reconciliation.
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func (kl *Kubelet) reconcileExtendedResource(initialNode, node *v1.Node) bool {
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requiresUpdate := false
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@ -1705,6 +1705,255 @@ func TestUpdateDefaultLabels(t *testing.T) {
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}
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}
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func TestReconcileHugePageResource(t *testing.T) {
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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hugePageResourceName64Ki := v1.ResourceName("hugepages-64Ki")
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hugePageResourceName2Mi := v1.ResourceName("hugepages-2Mi")
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hugePageResourceName1Gi := v1.ResourceName("hugepages-1Gi")
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cases := []struct {
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name string
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testKubelet *TestKubelet
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initialNode *v1.Node
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existingNode *v1.Node
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expectedNode *v1.Node
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needsUpdate bool
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}{
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{
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name: "no update needed when all huge page resources are similar",
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testKubelet: testKubelet,
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needsUpdate: false,
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initialNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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},
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},
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existingNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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},
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},
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expectedNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
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},
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},
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},
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}, {
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name: "update needed when new huge page resources is supported",
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testKubelet: testKubelet,
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needsUpdate: true,
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initialNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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existingNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: resource.MustParse("100Mi"),
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},
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},
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},
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expectedNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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}, {
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name: "update needed when huge page resource quantity has changed",
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testKubelet: testKubelet,
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needsUpdate: true,
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initialNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("4Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("4Gi"),
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},
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},
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},
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existingNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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expectedNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("4Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("4Gi"),
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},
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},
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},
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}, {
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name: "update needed when a huge page resources is no longer supported",
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testKubelet: testKubelet,
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needsUpdate: true,
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initialNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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existingNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName2Mi: *resource.NewQuantity(0, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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expectedNode: &v1.Node{
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Status: v1.NodeStatus{
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Capacity: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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Allocatable: v1.ResourceList{
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v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
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v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
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v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
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hugePageResourceName1Gi: resource.MustParse("2Gi"),
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},
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},
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},
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},
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}
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for _, tc := range cases {
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t.Run(tc.name, func(T *testing.T) {
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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needsUpdate := kubelet.reconcileHugePageResource(tc.initialNode, tc.existingNode)
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assert.Equal(t, tc.needsUpdate, needsUpdate, tc.name)
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assert.Equal(t, tc.expectedNode, tc.existingNode, tc.name)
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})
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}
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}
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func TestReconcileExtendedResource(t *testing.T) {
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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testKubelet.kubelet.kubeClient = nil // ensure only the heartbeat client is used
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@ -28,6 +28,7 @@ import (
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/kubernetes/pkg/kubelet/cm"
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"k8s.io/kubernetes/test/e2e/framework"
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@ -178,12 +179,57 @@ func runHugePagesTests(f *framework.Framework) {
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err := e2epod.WaitForPodSuccessInNamespace(f.ClientSet, verifyPod.Name, f.Namespace.Name)
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framework.ExpectNoError(err)
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})
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ginkgo.It("should add resources for new huge page sizes on kubelet restart", func() {
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ginkgo.By("Stopping kubelet")
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startKubelet := stopKubelet()
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ginkgo.By(`Patching away support for hugepage resource "hugepages-2Mi"`)
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patch := []byte(`[{"op": "remove", "path": "/status/capacity/hugepages-2Mi"}, {"op": "remove", "path": "/status/allocatable/hugepages-2Mi"}]`)
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result := f.ClientSet.CoreV1().RESTClient().Patch(types.JSONPatchType).Resource("nodes").Name(framework.TestContext.NodeName).SubResource("status").Body(patch).Do(context.TODO())
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framework.ExpectNoError(result.Error(), "while patching")
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ginkgo.By("Starting kubelet again")
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startKubelet()
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ginkgo.By("verifying that the hugepages-2Mi resource is present")
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gomega.Eventually(func() bool {
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node, err := f.ClientSet.CoreV1().Nodes().Get(context.TODO(), framework.TestContext.NodeName, metav1.GetOptions{})
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framework.ExpectNoError(err, "while getting node status")
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_, isPresent := node.Status.Capacity["hugepages-2Mi"]
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return isPresent
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}, 30*time.Second, framework.Poll).Should(gomega.Equal(true))
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})
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}
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// Serial because the test updates kubelet configuration.
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var _ = SIGDescribe("HugePages [Serial] [Feature:HugePages][NodeFeature:HugePages]", func() {
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f := framework.NewDefaultFramework("hugepages-test")
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ginkgo.It("should remove resources for huge page sizes no longer supported", func() {
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ginkgo.By("mimicking support for 9Mi of 3Mi huge page memory by patching the node status")
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patch := []byte(`[{"op": "add", "path": "/status/capacity/hugepages-3Mi", "value": "9Mi"}, {"op": "add", "path": "/status/allocatable/hugepages-3Mi", "value": "9Mi"}]`)
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result := f.ClientSet.CoreV1().RESTClient().Patch(types.JSONPatchType).Resource("nodes").Name(framework.TestContext.NodeName).SubResource("status").Body(patch).Do(context.TODO())
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framework.ExpectNoError(result.Error(), "while patching")
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node, err := f.ClientSet.CoreV1().Nodes().Get(context.TODO(), framework.TestContext.NodeName, metav1.GetOptions{})
|
||||
framework.ExpectNoError(err, "while getting node status")
|
||||
|
||||
ginkgo.By("Verifying that the node now supports huge pages with size 3Mi")
|
||||
value, ok := node.Status.Capacity["hugepages-3Mi"]
|
||||
framework.ExpectEqual(ok, true, "capacity should contain resouce hugepages-3Mi")
|
||||
framework.ExpectEqual(value.String(), "9Mi", "huge pages with size 3Mi should be supported")
|
||||
|
||||
ginkgo.By("restarting the node and verifying that huge pages with size 3Mi are not supported")
|
||||
restartKubelet()
|
||||
|
||||
ginkgo.By("verifying that the hugepages-3Mi resource no longer is present")
|
||||
gomega.Eventually(func() bool {
|
||||
node, err = f.ClientSet.CoreV1().Nodes().Get(context.TODO(), framework.TestContext.NodeName, metav1.GetOptions{})
|
||||
framework.ExpectNoError(err, "while getting node status")
|
||||
_, isPresent := node.Status.Capacity["hugepages-3Mi"]
|
||||
return isPresent
|
||||
}, 30*time.Second, framework.Poll).Should(gomega.Equal(false))
|
||||
})
|
||||
ginkgo.Context("With config updated with hugepages feature enabled", func() {
|
||||
ginkgo.BeforeEach(func() {
|
||||
ginkgo.By("verifying hugepages are supported")
|
||||
|
||||
Loading…
Reference in New Issue
Block a user