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Delete all pods based on condition transition time.

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This commit is contained in:
Deyuan Deng
2015-03-20 13:35:41 -04:00
parent cf548765c9
commit b51d491f05
4 changed files with 262 additions and 94 deletions
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114
pkg/cloudprovider/controller/nodecontroller.go
View File

@@ -39,8 +39,18 @@ const (
// sync node status in this case, but will monitor node status updated from kubelet. If
// it doesn't receive update for this amount of time, it will start posting node NotReady
// condition. The amount of time when NodeController start evicting pods is controlled
// via flag 'pod_eviction_timeout'. Note: be cautious when changing nodeMonitorGracePeriod,
// it must work with kubelet.nodeStatusUpdateFrequency.
// via flag 'pod_eviction_timeout'.
// Note: be cautious when changing the constant, it must work with nodeStatusUpdateFrequency
// in kubelet. There are several constraints:
// 1. nodeMonitorGracePeriod must be N times more than nodeStatusUpdateFrequency, where
// N means number of retries allowed for kubelet to post node status. It is pointless
// to make nodeMonitorGracePeriod be less than nodeStatusUpdateFrequency, since there
// will only be fresh values from Kubelet at an interval of nodeStatusUpdateFrequency.
// 2. nodeMonitorGracePeriod can't be too large for user experience - larger value takes
// longer for user to see up-to-date node status.
// 3. nodeStatusUpdateFrequency needs to be large enough for Kubelet to generate node
// status. Kubelet may fail to update node status reliablly if the value is too small,
// as it takes time to gather all necessary node information.
nodeMonitorGracePeriod = 8 * time.Second
// The constant is used if sync_nodes_status=False, and for node startup. When node
// is just created, e.g. cluster bootstrap or node creation, we give a longer grace period.
@@ -94,15 +104,15 @@ func NewNodeController(
}
// Run creates initial node list and start syncing instances from cloudprovider, if any.
// It also starts syncing cluster node status.
// It also starts syncing or monitoring cluster node status.
// 1. RegisterNodes() is called only once to register all initial nodes (from cloudprovider
// or from command line flag). To make cluster bootstrap faster, node controller populates
// node addresses.
// 2. SyncCloudNodes() is called periodically (if enabled) to sync instances from cloudprovider.
// Node created here will only have specs.
// 3. SyncNodeStatus() is called periodically (if enabled) to sync node status for nodes in
// k8s cluster. If not enabled, MonitorNodeStatus() is called otherwise to monitor node
// status posted from kubelet.
// 3. Depending on how k8s is configured, there are two ways of syncing the node status:
// 3.1 SyncProbedNodeStatus() is called periodically to sync node status for nodes in k8s cluster.
// 3.2 MonitorNodeStatus() is called periodically to monitor node status posted from kubelet.
func (s *NodeController) Run(period time.Duration, syncNodeList, syncNodeStatus bool) {
// Register intial set of nodes with their status set.
var nodes *api.NodeList
@@ -139,7 +149,7 @@ func (s *NodeController) Run(period time.Duration, syncNodeList, syncNodeStatus
// Start syncing or monitoring node status.
if syncNodeStatus {
go util.Forever(func() {
if err = s.SyncNodeStatus(); err != nil {
if err = s.SyncProbedNodeStatus(); err != nil {
glog.Errorf("Error syncing status: %v", err)
}
}, period)
@@ -227,8 +237,8 @@ func (s *NodeController) SyncCloudNodes() error {
return nil
}
// SyncNodeStatus synchronizes cluster nodes status to master server.
func (s *NodeController) SyncNodeStatus() error {
// SyncProbedNodeStatus synchronizes cluster nodes status to master server.
func (s *NodeController) SyncProbedNodeStatus() error {
nodes, err := s.kubeClient.Nodes().List()
if err != nil {
return err
@@ -415,45 +425,70 @@ func (s *NodeController) MonitorNodeStatus() error {
return err
}
for i := range nodes.Items {
node := &nodes.Items[i]
// Precompute all condition times to avoid deep copy of node status (We'll modify node for
// updating, and NodeStatus.Conditions is an array, which makes assignment copy not useful).
latestConditionTime := s.latestConditionTime(node, api.NodeReady)
var gracePeriod time.Duration
if latestConditionTime == node.CreationTimestamp {
var lastReadyCondition api.NodeCondition
node := &nodes.Items[i]
readyCondition := s.getCondition(node, api.NodeReady)
if readyCondition == nil {
// If ready condition is nil, then kubelet (or nodecontroller) never posted node status.
// A fake ready condition is created, where LastProbeTime and LastTransitionTime is set
// to node.CreationTimestamp to avoid handle the corner case.
lastReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionUnknown,
LastProbeTime: node.CreationTimestamp,
LastTransitionTime: node.CreationTimestamp,
}
gracePeriod = nodeStartupGracePeriod
} else {
// If ready condition is not nil, make a copy of it, since we may modify it in place later.
lastReadyCondition = *readyCondition
gracePeriod = nodeMonitorGracePeriod
}
latestFullConditionTime := s.latestConditionTimeWithStatus(node, api.NodeReady, api.ConditionFull)
// Grace period has passed, post node NotReady condition to master, without contacting kubelet.
if util.Now().After(latestConditionTime.Add(gracePeriod)) {
readyCondition := s.getCondition(node, api.NodeReady)
// Check last time when NodeReady was updated.
if util.Now().After(lastReadyCondition.LastProbeTime.Add(gracePeriod)) {
// NodeReady condition was last set longer ago than gracePeriod, so update it to Unknown
// (regardless of its current value) in the master, without contacting kubelet.
if readyCondition == nil {
glog.V(2).Infof("node %v is never updated by kubelet")
node.Status.Conditions = append(node.Status.Conditions, api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionNone,
Status: api.ConditionUnknown,
Reason: fmt.Sprintf("Kubelet never posted node status"),
LastProbeTime: util.Now(),
LastTransitionTime: util.Now(),
})
} else {
readyCondition.Status = api.ConditionNone
readyCondition.Reason = fmt.Sprintf("Kubelet stop posting node status")
// Note here the out-dated condition can be the one posted by nodecontroller
// itself before. We keep posting the status to keep LastProbeTime fresh.
glog.V(2).Infof("node %v hasn't been updated for a while, last ready condition is %+v", node.Name, readyCondition)
readyCondition.Status = api.ConditionUnknown
readyCondition.Reason = fmt.Sprintf("Kubelet stopped posting node status")
readyCondition.LastProbeTime = util.Now()
if readyCondition.Status == api.ConditionFull {
if lastReadyCondition.Status != api.ConditionUnknown {
readyCondition.LastTransitionTime = util.Now()
}
}
glog.V(2).Infof("updating node %v, whose status hasn't been updated by kubelet for a long time", node.Name)
_, err = s.kubeClient.Nodes().Update(node)
if err != nil {
glog.Errorf("error updating node %s: %v", node.Name, err)
}
}
// Eviction timeout! Evict all pods on the unhealthy node.
if util.Now().After(latestFullConditionTime.Add(s.podEvictionTimeout)) {
s.deletePods(node.Name)
if readyCondition != nil {
// Check eviction timeout.
if lastReadyCondition.Status == api.ConditionNone &&
util.Now().After(lastReadyCondition.LastTransitionTime.Add(s.podEvictionTimeout)) {
// Node stays in not ready for at least 'podEvictionTimeout' - evict all pods on the unhealthy node.
s.deletePods(node.Name)
}
if lastReadyCondition.Status == api.ConditionUnknown &&
util.Now().After(lastReadyCondition.LastTransitionTime.Add(s.podEvictionTimeout-gracePeriod)) {
// Same as above. Note however, since condition unknown is posted by node controller, which means we
// need to substract monitoring grace period in order to get the real 'podEvictionTimeout'.
s.deletePods(node.Name)
}
}
}
return nil
@@ -555,30 +590,3 @@ func (s *NodeController) getCondition(node *api.Node, conditionType api.NodeCond
}
return nil
}
// latestConditionTime returns the latest condition timestamp for the node, regardless of condition status.
// If nothing matches, the node creation timestamp will be returned.
func (s *NodeController) latestConditionTime(node *api.Node, conditionType api.NodeConditionType) util.Time {
readyTime := node.ObjectMeta.CreationTimestamp
for _, condition := range node.Status.Conditions {
if condition.Type == conditionType &&
condition.LastProbeTime.After(readyTime.Time) {
readyTime = condition.LastProbeTime
}
}
return readyTime
}
// latestConditionTimeWithStatus returns the latest condition timestamp for the node, with given condition status.
// If nothing matches, the node creation timestamp will be returned.
func (s *NodeController) latestConditionTimeWithStatus(node *api.Node, conditionType api.NodeConditionType, conditionStatus api.ConditionStatus) util.Time {
readyTime := node.ObjectMeta.CreationTimestamp
for _, condition := range node.Status.Conditions {
if condition.Type == conditionType &&
condition.Status == conditionStatus &&
condition.LastProbeTime.After(readyTime.Time) {
readyTime = condition.LastProbeTime
}
}
return readyTime
}

185
pkg/cloudprovider/controller/nodecontroller_test.go
View File

@@ -688,7 +688,7 @@ func TestPopulateNodeAddresses(t *testing.T) {
}
}
func TestSyncNodeStatus(t *testing.T) {
func TestSyncProbedNodeStatus(t *testing.T) {
table := []struct {
fakeNodeHandler *FakeNodeHandler
fakeKubeletClient *FakeKubeletClient
@@ -755,7 +755,7 @@ func TestSyncNodeStatus(t *testing.T) {
for _, item := range table {
nodeController := NewNodeController(item.fakeCloud, ".*", nil, nil, item.fakeNodeHandler, item.fakeKubeletClient, 10, time.Minute)
if err := nodeController.SyncNodeStatus(); err != nil {
if err := nodeController.SyncProbedNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item.fakeNodeHandler.RequestCount != item.expectedRequestCount {
@@ -779,7 +779,7 @@ func TestSyncNodeStatus(t *testing.T) {
}
// Second sync will also update the node.
item.fakeNodeHandler.RequestCount = 0
if err := nodeController.SyncNodeStatus(); err != nil {
if err := nodeController.SyncProbedNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item.fakeNodeHandler.RequestCount != item.expectedRequestCount {
@@ -788,7 +788,7 @@ func TestSyncNodeStatus(t *testing.T) {
}
}
func TestSyncNodeStatusTransitionTime(t *testing.T) {
func TestSyncProbedNodeStatusTransitionTime(t *testing.T) {
table := []struct {
fakeNodeHandler *FakeNodeHandler
fakeKubeletClient *FakeKubeletClient
@@ -870,7 +870,7 @@ func TestSyncNodeStatusTransitionTime(t *testing.T) {
nodeController.lookupIP = func(host string) ([]net.IP, error) {
return nil, fmt.Errorf("lookup %v: no such host", host)
}
if err := nodeController.SyncNodeStatus(); err != nil {
if err := nodeController.SyncProbedNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item.expectedRequestCount != item.fakeNodeHandler.RequestCount {
@@ -894,7 +894,7 @@ func TestSyncNodeStatusTransitionTime(t *testing.T) {
}
}
func TestSyncNodeStatusEvictPods(t *testing.T) {
func TestSyncProbedNodeStatusEvictPods(t *testing.T) {
table := []struct {
fakeNodeHandler *FakeNodeHandler
fakeKubeletClient *FakeKubeletClient
@@ -1032,7 +1032,7 @@ func TestSyncNodeStatusEvictPods(t *testing.T) {
nodeController.lookupIP = func(host string) ([]net.IP, error) {
return nil, fmt.Errorf("lookup %v: no such host", host)
}
if err := nodeController.SyncNodeStatus(); err != nil {
if err := nodeController.SyncProbedNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item.expectedRequestCount != item.fakeNodeHandler.RequestCount {
@@ -1044,11 +1044,159 @@ func TestSyncNodeStatusEvictPods(t *testing.T) {
}
}
func TestMonitorNodeStatus(t *testing.T) {
func TestMonitorNodeStatusEvictPods(t *testing.T) {
table := []struct {
fakeNodeHandler *FakeNodeHandler
expectedEvictPods bool
}{
// Node created recently, with no status (happens only at cluster startup).
{
fakeNodeHandler: &FakeNodeHandler{
Existing: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
Name: "node0",
CreationTimestamp: util.Now(),
},
},
},
Fake: client.Fake{
PodsList: api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}},
},
},
expectedEvictPods: false,
},
// Node created long time ago, with not ready status updated by kubelet for a short time.
{
fakeNodeHandler: &FakeNodeHandler{
Existing: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
Name: "node0",
CreationTimestamp: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionNone,
LastProbeTime: util.Now(),
LastTransitionTime: util.Now(),
},
},
},
},
},
Fake: client.Fake{
PodsList: api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}},
},
},
expectedEvictPods: false,
},
// Node created long time ago, with not ready status updated by kubelet for a long time.
{
fakeNodeHandler: &FakeNodeHandler{
Existing: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
Name: "node0",
CreationTimestamp: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionUnknown,
LastProbeTime: util.Date(2013, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
},
},
},
},
Fake: client.Fake{
PodsList: api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}},
},
},
expectedEvictPods: true,
},
// Node created long time ago, with unknown status updated by node controller for a short time.
{
fakeNodeHandler: &FakeNodeHandler{
Existing: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
Name: "node0",
CreationTimestamp: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionUnknown,
LastProbeTime: util.Now(),
LastTransitionTime: util.Now(),
},
},
},
},
},
Fake: client.Fake{
PodsList: api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}},
},
},
expectedEvictPods: false,
},
// Node created long time ago, with unknown status updated by node controller for a long time.
{
fakeNodeHandler: &FakeNodeHandler{
Existing: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
Name: "node0",
CreationTimestamp: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionUnknown,
LastProbeTime: util.Date(2013, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
},
},
},
},
Fake: client.Fake{
PodsList: api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}},
},
},
expectedEvictPods: true,
},
}
for _, item := range table {
nodeController := NewNodeController(nil, "", []string{"node0"}, nil, item.fakeNodeHandler, nil, 10, 5*time.Minute)
if err := nodeController.MonitorNodeStatus(); err != nil {
t.Errorf("unexpected error: %v", err)
}
podEvicted := false
for _, action := range item.fakeNodeHandler.Actions {
if action.Action == "delete-pod" {
podEvicted = true
}
}
if item.expectedEvictPods != podEvicted {
t.Errorf("expected pod eviction: %+v, got %+v", item.expectedEvictPods, podEvicted)
}
}
}
func TestMonitorNodeStatusUpdateStatus(t *testing.T) {
table := []struct {
fakeNodeHandler *FakeNodeHandler
expectedRequestCount int
expectedEvictPods bool
expectedNodes []*api.Node
}{
// Node created long time ago, with no status.
@@ -1067,7 +1215,6 @@ func TestMonitorNodeStatus(t *testing.T) {
},
},
expectedRequestCount: 2, // List+Update
expectedEvictPods: true,
expectedNodes: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
@@ -1078,7 +1225,7 @@ func TestMonitorNodeStatus(t *testing.T) {
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionNone,
Status: api.ConditionUnknown,
Reason: fmt.Sprintf("Kubelet never posted node status"),
LastProbeTime: util.Time{},
LastTransitionTime: util.Time{},
@@ -1104,7 +1251,6 @@ func TestMonitorNodeStatus(t *testing.T) {
},
},
expectedRequestCount: 1, // List
expectedEvictPods: false,
expectedNodes: nil,
},
// Node created long time ago, with status updated long time ago.
@@ -1133,7 +1279,6 @@ func TestMonitorNodeStatus(t *testing.T) {
},
},
expectedRequestCount: 2, // List+Update
expectedEvictPods: true,
expectedNodes: []*api.Node{
{
ObjectMeta: api.ObjectMeta{
@@ -1144,8 +1289,8 @@ func TestMonitorNodeStatus(t *testing.T) {
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionNone,
Reason: fmt.Sprintf("Kubelet stop posting node status"),
Status: api.ConditionUnknown,
Reason: fmt.Sprintf("Kubelet stopped posting node status"),
LastProbeTime: util.Time{},
LastTransitionTime: util.Time{},
},
@@ -1180,7 +1325,6 @@ func TestMonitorNodeStatus(t *testing.T) {
},
},
expectedRequestCount: 1, // List
expectedEvictPods: false,
expectedNodes: nil,
},
}
@@ -1209,15 +1353,6 @@ func TestMonitorNodeStatus(t *testing.T) {
if !reflect.DeepEqual(item.expectedNodes, item.fakeNodeHandler.UpdatedNodes) {
t.Errorf("expected nodes %+v, got %+v", item.expectedNodes[0], item.fakeNodeHandler.UpdatedNodes[0])
}
podEvicted := false
for _, action := range item.fakeNodeHandler.Actions {
if action.Action == "delete-pod" {
podEvicted = true
}
}
if item.expectedEvictPods != podEvicted {
t.Errorf("expected pod eviction: %+v, got %+v", item.expectedEvictPods, podEvicted)
}
}
}

19
pkg/kubelet/kubelet.go
View File

@@ -75,8 +75,18 @@ const (
initialNodeStatusUpdateFrequency = 100 * time.Millisecond
nodeStatusUpdateFrequencyInc = 500 * time.Millisecond
// Node status update frequency and retry count. Note: be cautious when changing nodeStatusUpdateFrequency,
// it must work with nodecontroller.nodeMonitorGracePeriod.
// Node status update frequency and retry count.
// Note: be cautious when changing the constant, it must work with nodeMonitorGracePeriod
// in nodecontroller. There are several constraints:
// 1. nodeMonitorGracePeriod must be N times more than nodeStatusUpdateFrequency, where
// N means number of retries allowed for kubelet to post node status. It is pointless
// to make nodeMonitorGracePeriod be less than nodeStatusUpdateFrequency, since there
// will only be fresh values from Kubelet at an interval of nodeStatusUpdateFrequency.
// 2. nodeMonitorGracePeriod can't be too large for user experience - larger value takes
// longer for user to see up-to-date node status.
// 3. nodeStatusUpdateFrequency needs to be large enough for Kubelet to generate node
// status. Kubelet may fail to update node status reliablly if the value is too small,
// as it takes time to gather all necessary node information.
nodeStatusUpdateFrequency = 2 * time.Second
nodeStatusUpdateRetry = 5
)
@@ -1837,20 +1847,23 @@ func (kl *Kubelet) tryUpdateNodeStatus() error {
node.Spec.Capacity = CapacityFromMachineInfo(info)
}
currentTime := util.Now()
newCondition := api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Now(),
LastProbeTime: currentTime,
}
updated := false
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeReady {
newCondition.LastTransitionTime = node.Status.Conditions[i].LastTransitionTime
node.Status.Conditions[i] = newCondition
updated = true
}
}
if !updated {
newCondition.LastTransitionTime = currentTime
node.Status.Conditions = append(node.Status.Conditions, newCondition)
}

38
pkg/kubelet/kubelet_test.go
View File

@@ -3102,10 +3102,11 @@ func TestUpdateNewNodeStatus(t *testing.T) {
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Time{},
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Time{},
LastTransitionTime: util.Time{},
},
},
NodeInfo: api.NodeSystemInfo{
@@ -3128,7 +3129,11 @@ func TestUpdateNewNodeStatus(t *testing.T) {
if updatedNode.Status.Conditions[0].LastProbeTime.IsZero() {
t.Errorf("unexpected zero last probe timestamp")
}
if updatedNode.Status.Conditions[0].LastTransitionTime.IsZero() {
t.Errorf("unexpected zero last transition timestamp")
}
updatedNode.Status.Conditions[0].LastProbeTime = util.Time{}
updatedNode.Status.Conditions[0].LastTransitionTime = util.Time{}
if !reflect.DeepEqual(expectedNode, updatedNode) {
t.Errorf("expected \n%v\n, got \n%v", expectedNode, updatedNode)
}
@@ -3151,10 +3156,11 @@ func TestUpdateExistingNodeStatus(t *testing.T) {
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
LastTransitionTime: util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
},
},
},
@@ -3173,10 +3179,11 @@ func TestUpdateExistingNodeStatus(t *testing.T) {
Status: api.NodeStatus{
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Time{}, // placeholder
Type: api.NodeReady,
Status: api.ConditionFull,
Reason: fmt.Sprintf("kubelet is posting ready status"),
LastProbeTime: util.Time{}, // placeholder
LastTransitionTime: util.Time{}, // placeholder
},
},
NodeInfo: api.NodeSystemInfo{
@@ -3196,11 +3203,16 @@ func TestUpdateExistingNodeStatus(t *testing.T) {
if !ok {
t.Errorf("unexpected object type")
}
// Expect LastProbeTime to be updated to Now, while LastTransitionTime to be the same.
if reflect.DeepEqual(updatedNode.Status.Conditions[0].LastProbeTime, util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC)) {
t.Errorf("expected \n%v\n, got \n%v", updatedNode.Status.Conditions[0].LastProbeTime,
t.Errorf("expected \n%v\n, got \n%v", util.Now(), util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC))
}
if !reflect.DeepEqual(updatedNode.Status.Conditions[0].LastTransitionTime, util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC)) {
t.Errorf("expected \n%v\n, got \n%v", updatedNode.Status.Conditions[0].LastTransitionTime,
util.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC))
}
updatedNode.Status.Conditions[0].LastProbeTime = util.Time{}
updatedNode.Status.Conditions[0].LastTransitionTime = util.Time{}
if !reflect.DeepEqual(expectedNode, updatedNode) {
t.Errorf("expected \n%v\n, got \n%v", expectedNode, updatedNode)
}