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Merge pull request #95269 from SataQiu/kubelet-20201003

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Fix panic when kubelet register if a node object already exists with no Status.Capacity or Status.Allocatable
This commit is contained in:
Kubernetes Prow Robot
2020-12-08 16:29:19 -08:00
committed by GitHub
parent acc3b1a01b c73ea0a2c3
commit e40cba59e3
2 changed files with 358 additions and 24 deletions
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27
pkg/kubelet/kubelet_node_status.go
View File

@@ -127,7 +127,7 @@ func (kl *Kubelet) tryRegisterWithAPIServer(node *v1.Node) bool {
// reconcileHugePageResource will update huge page capacity for each page size and remove huge page sizes no longer supported
func (kl *Kubelet) reconcileHugePageResource(initialNode, existingNode *v1.Node) bool {
requiresUpdate := false
requiresUpdate := updateDefaultResources(initialNode, existingNode)
supportedHugePageResources := sets.String{}
for resourceName := range initialNode.Status.Capacity {
@@ -174,7 +174,7 @@ func (kl *Kubelet) reconcileHugePageResource(initialNode, existingNode *v1.Node)
// Zeros out extended resource capacity during reconciliation.
func (kl *Kubelet) reconcileExtendedResource(initialNode, node *v1.Node) bool {
requiresUpdate := false
requiresUpdate := updateDefaultResources(initialNode, node)
// Check with the device manager to see if node has been recreated, in which case extended resources should be zeroed until they are available
if kl.containerManager.ShouldResetExtendedResourceCapacity() {
for k := range node.Status.Capacity {
@@ -189,6 +189,29 @@ func (kl *Kubelet) reconcileExtendedResource(initialNode, node *v1.Node) bool {
return requiresUpdate
}
// updateDefaultResources will set the default resources on the existing node according to the initial node
func updateDefaultResources(initialNode, existingNode *v1.Node) bool {
requiresUpdate := false
if existingNode.Status.Capacity == nil {
if initialNode.Status.Capacity != nil {
existingNode.Status.Capacity = initialNode.Status.Capacity.DeepCopy()
requiresUpdate = true
} else {
existingNode.Status.Capacity = make(map[v1.ResourceName]resource.Quantity)
}
}
if existingNode.Status.Allocatable == nil {
if initialNode.Status.Allocatable != nil {
existingNode.Status.Allocatable = initialNode.Status.Allocatable.DeepCopy()
requiresUpdate = true
} else {
existingNode.Status.Allocatable = make(map[v1.ResourceName]resource.Quantity)
}
}
return requiresUpdate
}
// updateDefaultLabels will set the default labels on the node
func (kl *Kubelet) updateDefaultLabels(initialNode, existingNode *v1.Node) bool {
defaultLabels := []string{

355
pkg/kubelet/kubelet_node_status_test.go
View File

@@ -1147,6 +1147,13 @@ func TestRegisterWithApiServer(t *testing.T) {
}, nil
})
kubeClient.AddReactor("patch", "nodes", func(action core.Action) (bool, runtime.Object, error) {
if action.GetSubresource() == "status" {
return true, nil, nil
}
return notImplemented(action)
})
addNotImplatedReaction(kubeClient)
machineInfo := &cadvisorapi.MachineInfo{
@@ -1705,6 +1712,216 @@ func TestUpdateDefaultLabels(t *testing.T) {
}
}
func TestUpdateDefaultResources(t *testing.T) {
cases := []struct {
name string
initialNode *v1.Node
existingNode *v1.Node
expectedNode *v1.Node
needsUpdate bool
}{
{
name: "no update needed when capacity and allocatable of the existing node are not nil",
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: false,
}, {
name: "no update needed when capacity and allocatable of the initial node are nil",
initialNode: &v1.Node{},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: false,
}, {
name: "update needed when capacity and allocatable of the existing node are nil and capacity and allocatable of the initial node are not nil",
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
existingNode: &v1.Node{},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: true,
}, {
name: "update needed when capacity of the existing node is nil and capacity of the initial node is not nil",
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: true,
}, {
name: "update needed when allocatable of the existing node is nil and allocatable of the initial node is not nil",
initialNode: &v1.Node{
Status: v1.NodeStatus{
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: true,
}, {
name: "no update needed but capacity and allocatable of existing node should be initialized",
initialNode: &v1.Node{},
existingNode: &v1.Node{},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{},
Allocatable: v1.ResourceList{},
},
},
needsUpdate: false,
},
}
for _, tc := range cases {
t.Run(tc.name, func(T *testing.T) {
needsUpdate := updateDefaultResources(tc.initialNode, tc.existingNode)
assert.Equal(t, tc.needsUpdate, needsUpdate, tc.name)
assert.Equal(t, tc.expectedNode, tc.existingNode, tc.name)
})
}
}
func TestReconcileHugePageResource(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
hugePageResourceName64Ki := v1.ResourceName("hugepages-64Ki")
@@ -1939,6 +2156,49 @@ func TestReconcileHugePageResource(t *testing.T) {
},
},
},
}, {
name: "not panic when capacity or allocatable of existing node is nil",
testKubelet: testKubelet,
needsUpdate: true,
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
hugePageResourceName2Mi: resource.MustParse("100Mi"),
hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
hugePageResourceName2Mi: resource.MustParse("100Mi"),
hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
hugePageResourceName2Mi: resource.MustParse("100Mi"),
hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
hugePageResourceName2Mi: resource.MustParse("100Mi"),
hugePageResourceName64Ki: *resource.NewQuantity(0, resource.BinarySI),
},
},
},
},
}
@@ -1966,6 +2226,7 @@ func TestReconcileExtendedResource(t *testing.T) {
cases := []struct {
name string
testKubelet *TestKubelet
initialNode *v1.Node
existingNode *v1.Node
expectedNode *v1.Node
needsUpdate bool
@@ -1973,7 +2234,7 @@ func TestReconcileExtendedResource(t *testing.T) {
{
name: "no update needed without extended resource",
testKubelet: testKubelet,
existingNode: &v1.Node{
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
@@ -1987,25 +2248,6 @@ func TestReconcileExtendedResource(t *testing.T) {
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
},
},
},
needsUpdate: false,
},
{
name: "extended resource capacity is not zeroed due to presence of checkpoint file",
testKubelet: testKubelet,
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
@@ -2039,6 +2281,24 @@ func TestReconcileExtendedResource(t *testing.T) {
{
name: "extended resource capacity is zeroed",
testKubelet: testKubeletNoReset,
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(2), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(10), resource.DecimalSI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(2), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(10), resource.DecimalSI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
@@ -2077,14 +2337,65 @@ func TestReconcileExtendedResource(t *testing.T) {
},
needsUpdate: true,
},
{
name: "not panic when allocatable of existing node is nil",
testKubelet: testKubelet,
initialNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(2), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(10), resource.DecimalSI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(2), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(10), resource.DecimalSI),
},
},
},
existingNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(2), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(10), resource.DecimalSI),
},
},
},
expectedNode: &v1.Node{
Status: v1.NodeStatus{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(0), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(0), resource.DecimalSI),
},
Allocatable: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(2000, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(10e9, resource.BinarySI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
extendedResourceName1: *resource.NewQuantity(int64(0), resource.DecimalSI),
extendedResourceName2: *resource.NewQuantity(int64(0), resource.DecimalSI),
},
},
},
needsUpdate: true,
},
}
for _, tc := range cases {
defer testKubelet.Cleanup()
kubelet := testKubelet.kubelet
initialNode := &v1.Node{}
needsUpdate := kubelet.reconcileExtendedResource(initialNode, tc.existingNode)
needsUpdate := kubelet.reconcileExtendedResource(tc.initialNode, tc.existingNode)
assert.Equal(t, tc.needsUpdate, needsUpdate, tc.name)
assert.Equal(t, tc.expectedNode, tc.existingNode, tc.name)
}