mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-23 03:41:45 +00:00
removing redundant code
This commit is contained in:
parent
d6035f3e0d
commit
6842e11f7e
@ -595,13 +595,14 @@ func (nc *Controller) doNoExecuteTaintingPass() {
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// Because we want to mimic NodeStatus.Condition["Ready"] we make "unreachable" and "not ready" taints mutually exclusive.
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taintToAdd := v1.Taint{}
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oppositeTaint := v1.Taint{}
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if condition.Status == v1.ConditionFalse {
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switch condition.Status {
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case v1.ConditionFalse:
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taintToAdd = *NotReadyTaintTemplate
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oppositeTaint = *UnreachableTaintTemplate
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} else if condition.Status == v1.ConditionUnknown {
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case v1.ConditionUnknown:
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taintToAdd = *UnreachableTaintTemplate
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oppositeTaint = *NotReadyTaintTemplate
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} else {
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default:
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// It seems that the Node is ready again, so there's no need to taint it.
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klog.V(4).Infof("Node %v was in a taint queue, but it's ready now. Ignoring taint request.", value.Value)
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return true, 0
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@ -720,7 +721,8 @@ func (nc *Controller) monitorNodeHealth() error {
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decisionTimestamp := nc.now()
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if currentReadyCondition != nil {
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// Check eviction timeout against decisionTimestamp
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if observedReadyCondition.Status == v1.ConditionFalse {
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switch observedReadyCondition.Status {
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case v1.ConditionFalse:
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if nc.useTaintBasedEvictions {
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// We want to update the taint straight away if Node is already tainted with the UnreachableTaint
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if taintutils.TaintExists(node.Spec.Taints, UnreachableTaintTemplate) {
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@ -746,8 +748,7 @@ func (nc *Controller) monitorNodeHealth() error {
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}
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}
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}
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}
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if observedReadyCondition.Status == v1.ConditionUnknown {
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case v1.ConditionUnknown:
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if nc.useTaintBasedEvictions {
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// We want to update the taint straight away if Node is already tainted with the UnreachableTaint
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if taintutils.TaintExists(node.Spec.Taints, NotReadyTaintTemplate) {
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@ -773,8 +774,7 @@ func (nc *Controller) monitorNodeHealth() error {
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}
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}
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}
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}
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if observedReadyCondition.Status == v1.ConditionTrue {
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case v1.ConditionTrue:
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if nc.useTaintBasedEvictions {
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removed, err := nc.markNodeAsReachable(node)
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if err != nil {
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@ -807,7 +807,6 @@ func (nc *Controller) monitorNodeHealth() error {
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// tryUpdateNodeHealth checks a given node's conditions and tries to update it. Returns grace period to
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// which given node is entitled, state of current and last observed Ready Condition, and an error if it occurred.
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func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.NodeCondition, *v1.NodeCondition, error) {
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var err error
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var gracePeriod time.Duration
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var observedReadyCondition v1.NodeCondition
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_, currentReadyCondition := nodeutil.GetNodeCondition(&node.Status, v1.NodeReady)
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@ -836,7 +835,6 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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observedReadyCondition = *currentReadyCondition
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gracePeriod = nc.nodeMonitorGracePeriod
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}
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savedNodeHealth, found := nc.nodeHealthMap[node.Name]
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// There are following cases to check:
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// - both saved and new status have no Ready Condition set - we leave everything as it is,
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@ -858,7 +856,7 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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_, savedCondition = nodeutil.GetNodeCondition(savedNodeHealth.status, v1.NodeReady)
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savedLease = savedNodeHealth.lease
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}
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_, observedCondition := nodeutil.GetNodeCondition(&node.Status, v1.NodeReady)
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if !found {
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klog.Warningf("Missing timestamp for Node %s. Assuming now as a timestamp.", node.Name)
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savedNodeHealth = &nodeHealthData{
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@ -866,14 +864,14 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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probeTimestamp: nc.now(),
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readyTransitionTimestamp: nc.now(),
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}
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} else if savedCondition == nil && observedCondition != nil {
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} else if savedCondition == nil && currentReadyCondition != nil {
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klog.V(1).Infof("Creating timestamp entry for newly observed Node %s", node.Name)
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savedNodeHealth = &nodeHealthData{
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status: &node.Status,
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probeTimestamp: nc.now(),
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readyTransitionTimestamp: nc.now(),
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}
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} else if savedCondition != nil && observedCondition == nil {
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} else if savedCondition != nil && currentReadyCondition == nil {
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klog.Errorf("ReadyCondition was removed from Status of Node %s", node.Name)
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// TODO: figure out what to do in this case. For now we do the same thing as above.
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savedNodeHealth = &nodeHealthData{
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@ -881,12 +879,12 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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probeTimestamp: nc.now(),
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readyTransitionTimestamp: nc.now(),
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}
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} else if savedCondition != nil && observedCondition != nil && savedCondition.LastHeartbeatTime != observedCondition.LastHeartbeatTime {
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} else if savedCondition != nil && currentReadyCondition != nil && savedCondition.LastHeartbeatTime != currentReadyCondition.LastHeartbeatTime {
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var transitionTime metav1.Time
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// If ReadyCondition changed since the last time we checked, we update the transition timestamp to "now",
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// otherwise we leave it as it is.
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if savedCondition.LastTransitionTime != observedCondition.LastTransitionTime {
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klog.V(3).Infof("ReadyCondition for Node %s transitioned from %v to %v", node.Name, savedCondition, observedCondition)
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if savedCondition.LastTransitionTime != currentReadyCondition.LastTransitionTime {
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klog.V(3).Infof("ReadyCondition for Node %s transitioned from %v to %v", node.Name, savedCondition, currentReadyCondition)
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transitionTime = nc.now()
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} else {
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transitionTime = savedNodeHealth.readyTransitionTimestamp
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@ -919,31 +917,9 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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if nc.now().After(savedNodeHealth.probeTimestamp.Add(gracePeriod)) {
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// NodeReady condition or lease was last set longer ago than gracePeriod, so
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// update it to Unknown (regardless of its current value) in the master.
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if currentReadyCondition == nil {
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klog.V(2).Infof("node %v is never updated by kubelet", node.Name)
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node.Status.Conditions = append(node.Status.Conditions, v1.NodeCondition{
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Type: v1.NodeReady,
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Status: v1.ConditionUnknown,
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Reason: "NodeStatusNeverUpdated",
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Message: fmt.Sprintf("Kubelet never posted node status."),
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LastHeartbeatTime: node.CreationTimestamp,
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LastTransitionTime: nc.now(),
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})
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} else {
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klog.V(4).Infof("node %v hasn't been updated for %+v. Last ready condition is: %+v",
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node.Name, nc.now().Time.Sub(savedNodeHealth.probeTimestamp.Time), observedReadyCondition)
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if observedReadyCondition.Status != v1.ConditionUnknown {
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currentReadyCondition.Status = v1.ConditionUnknown
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currentReadyCondition.Reason = "NodeStatusUnknown"
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currentReadyCondition.Message = "Kubelet stopped posting node status."
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// LastProbeTime is the last time we heard from kubelet.
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currentReadyCondition.LastHeartbeatTime = observedReadyCondition.LastHeartbeatTime
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currentReadyCondition.LastTransitionTime = nc.now()
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}
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}
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// remaining node conditions should also be set to Unknown
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remainingNodeConditionTypes := []v1.NodeConditionType{
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nodeConditionTypes := []v1.NodeConditionType{
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v1.NodeReady,
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v1.NodeMemoryPressure,
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v1.NodeDiskPressure,
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v1.NodePIDPressure,
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@ -952,7 +928,7 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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}
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nowTimestamp := nc.now()
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for _, nodeConditionType := range remainingNodeConditionTypes {
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for _, nodeConditionType := range nodeConditionTypes {
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_, currentCondition := nodeutil.GetNodeCondition(&node.Status, nodeConditionType)
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if currentCondition == nil {
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klog.V(2).Infof("Condition %v of node %v was never updated by kubelet", nodeConditionType, node.Name)
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@ -975,10 +951,11 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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}
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}
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}
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// We need to update currentReadyCondition due to its value potentially changed.
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_, currentReadyCondition = nodeutil.GetNodeCondition(&node.Status, v1.NodeReady)
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_, currentCondition := nodeutil.GetNodeCondition(&node.Status, v1.NodeReady)
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if !apiequality.Semantic.DeepEqual(currentCondition, &observedReadyCondition) {
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if _, err = nc.kubeClient.CoreV1().Nodes().UpdateStatus(node); err != nil {
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if !apiequality.Semantic.DeepEqual(currentReadyCondition, &observedReadyCondition) {
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if _, err := nc.kubeClient.CoreV1().Nodes().UpdateStatus(node); err != nil {
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klog.Errorf("Error updating node %s: %v", node.Name, err)
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return gracePeriod, observedReadyCondition, currentReadyCondition, err
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}
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@ -992,7 +969,7 @@ func (nc *Controller) tryUpdateNodeHealth(node *v1.Node) (time.Duration, v1.Node
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}
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}
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return gracePeriod, observedReadyCondition, currentReadyCondition, err
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return gracePeriod, observedReadyCondition, currentReadyCondition, nil
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}
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func (nc *Controller) handleDisruption(zoneToNodeConditions map[string][]*v1.NodeCondition, nodes []*v1.Node) {
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@ -3057,3 +3057,216 @@ func TestReconcileNodeLabels(t *testing.T) {
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}
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}
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}
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func TestTryUpdateNodeHealth(t *testing.T) {
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fakeNow := metav1.Date(2017, 1, 1, 12, 0, 0, 0, time.UTC)
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fakeOld := metav1.Date(2016, 1, 1, 12, 0, 0, 0, time.UTC)
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evictionTimeout := 10 * time.Minute
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fakeNodeHandler := &testutil.FakeNodeHandler{
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Existing: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionTrue,
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LastHeartbeatTime: fakeNow,
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LastTransitionTime: fakeNow,
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&v1.PodList{Items: []v1.Pod{*testutil.NewPod("pod0", "node0")}}),
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}
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nodeController, _ := newNodeLifecycleControllerFromClient(
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fakeNodeHandler,
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evictionTimeout,
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testRateLimiterQPS,
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testRateLimiterQPS,
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testLargeClusterThreshold,
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testUnhealthyThreshold,
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testNodeMonitorGracePeriod,
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testNodeStartupGracePeriod,
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testNodeMonitorPeriod,
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true)
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nodeController.now = func() metav1.Time { return fakeNow }
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nodeController.recorder = testutil.NewFakeRecorder()
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getStatus := func(cond *v1.NodeCondition) *v1.ConditionStatus {
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if cond == nil {
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return nil
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}
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return &cond.Status
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}
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tests := []struct {
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name string
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node *v1.Node
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}{
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{
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name: "Status true",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionTrue,
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LastHeartbeatTime: fakeNow,
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LastTransitionTime: fakeNow,
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},
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},
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},
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},
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},
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{
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name: "Status false",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionFalse,
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LastHeartbeatTime: fakeNow,
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LastTransitionTime: fakeNow,
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},
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},
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},
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},
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},
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{
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name: "Status unknown",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionUnknown,
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LastHeartbeatTime: fakeNow,
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LastTransitionTime: fakeNow,
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},
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},
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},
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},
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},
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{
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name: "Status nil",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{},
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},
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},
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},
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{
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name: "Status true - after grace period",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeOld,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionTrue,
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LastHeartbeatTime: fakeOld,
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LastTransitionTime: fakeOld,
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},
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},
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},
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},
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},
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{
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name: "Status false - after grace period",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeOld,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionFalse,
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LastHeartbeatTime: fakeOld,
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LastTransitionTime: fakeOld,
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},
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},
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},
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},
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},
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{
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name: "Status unknown - after grace period",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeOld,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionUnknown,
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LastHeartbeatTime: fakeOld,
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LastTransitionTime: fakeOld,
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},
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},
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},
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},
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},
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{
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name: "Status nil - after grace period",
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeOld,
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},
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{},
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},
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},
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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nodeController.nodeHealthMap[test.node.Name] = &nodeHealthData{
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status: &test.node.Status,
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probeTimestamp: test.node.CreationTimestamp,
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readyTransitionTimestamp: test.node.CreationTimestamp,
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}
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_, _, currentReadyCondition, err := nodeController.tryUpdateNodeHealth(test.node)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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_, savedReadyCondition := nodeutil.GetNodeCondition(nodeController.nodeHealthMap[test.node.Name].status, v1.NodeReady)
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savedStatus := getStatus(savedReadyCondition)
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currentStatus := getStatus(currentReadyCondition)
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if currentStatus != savedStatus {
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t.Errorf("expected %v, got %v", savedStatus, currentStatus)
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}
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})
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}
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}
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Block a user