// Set Ready condition for the node.
func (kl *Kubelet) setNodeReadyCondition(node *api.Node) {
// NOTE(aaronlevy): NodeReady condition needs to be the last in the list of node conditions.
// This is due to an issue with version skewed kubelet and master components.
// ref: https://github.com/kubernetes/kubernetes/issues/16961
currentTime := unversioned.NewTime(kl.clock.Now())
var newNodeReadyCondition api.NodeCondition
if rs := kl.runtimeState.errors(); len(rs) == 0 {
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: "kubelet is posting ready status",
LastHeartbeatTime: currentTime,
}
} else {
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionFalse,
Reason: "KubeletNotReady",
Message: strings.Join(rs, ","),
LastHeartbeatTime: currentTime,
}
}
// Record any soft requirements that were not met in the container manager.
status := kl.containerManager.Status()
if status.SoftRequirements != nil {
newNodeReadyCondition.Message = fmt.Sprintf("%s. WARNING: %s", newNodeReadyCondition.Message, status.SoftRequirements.Error())
}
readyConditionUpdated := false
needToRecordEvent := false
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeReady {
if node.Status.Conditions[i].Status == newNodeReadyCondition.Status {
newNodeReadyCondition.LastTransitionTime = node.Status.Conditions[i].LastTransitionTime
} else {
newNodeReadyCondition.LastTransitionTime = currentTime
needToRecordEvent = true
}
node.Status.Conditions[i] = newNodeReadyCondition
readyConditionUpdated = true
break
}
}
if !readyConditionUpdated {
newNodeReadyCondition.LastTransitionTime = currentTime
node.Status.Conditions = append(node.Status.Conditions, newNodeReadyCondition)
}
if needToRecordEvent {
if newNodeReadyCondition.Status == api.ConditionTrue {
kl.recordNodeStatusEvent(api.EventTypeNormal, events.NodeReady)
} else {
kl.recordNodeStatusEvent(api.EventTypeNormal, events.NodeNotReady)
}
}
}
// setNodeInodePressureCondition for the node.
// TODO: this needs to move somewhere centralized...
func (kl *Kubelet) setNodeInodePressureCondition(node *api.Node) {
currentTime := unversioned.NewTime(kl.clock.Now())
var condition *api.NodeCondition
// Check if NodeInodePressure condition already exists and if it does, just pick it up for update.
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeInodePressure {
condition = &node.Status.Conditions[i]
}
}
newCondition := false
// If the NodeInodePressure condition doesn't exist, create one
if condition == nil {
condition = &api.NodeCondition{
Type: api.NodeInodePressure,
Status: api.ConditionUnknown,
}
// cannot be appended to node.Status.Conditions here because it gets
// copied to the slice. So if we append to the slice here none of the
// updates we make below are reflected in the slice.
newCondition = true
}
// Update the heartbeat time
condition.LastHeartbeatTime = currentTime
// Note: The conditions below take care of the case when a new NodeInodePressure condition is
// created and as well as the case when the condition already exists. When a new condition
// is created its status is set to api.ConditionUnknown which matches either
// condition.Status != api.ConditionTrue or
// condition.Status != api.ConditionFalse in the conditions below depending on whether
// the kubelet is under inode pressure or not.
if kl.evictionManager.IsUnderInodePressure() {
if condition.Status != api.ConditionTrue {
condition.Status = api.ConditionTrue
condition.Reason = "KubeletHasInodePressure"
condition.Message = "kubelet has inode pressure"
condition.LastTransitionTime = currentTime
kl.recordNodeStatusEvent(api.EventTypeNormal, "NodeHasInodePressure")
}
} else {
if condition.Status != api.ConditionFalse {
condition.Status = api.ConditionFalse
condition.Reason = "KubeletHasNoInodePressure"
condition.Message = "kubelet has no inode pressure"
condition.LastTransitionTime = currentTime
kl.recordNodeStatusEvent(api.EventTypeNormal, "NodeHasNoInodePressure")
}
}
if newCondition {
node.Status.Conditions = append(node.Status.Conditions, *condition)
}
}
// nodeWithUpdatedStatus clones the given node and updates the NodeReady condition.
// The updated node is return and a boolean indicating whether the node was changed
// at all.
func (u *StatusUpdater) nodeWithUpdatedStatus(n *api.Node) (*api.Node, bool, error) {
readyCondition := getCondition(&n.Status, api.NodeReady)
currentTime := unversioned.NewTime(u.nowFunc())
// avoid flapping by waiting at least twice the kubetlet update frequency, i.e.
// give the kubelet the chance twice to update the heartbeat. This is necessary
// because we only poll the Mesos master state.json once in a while and we
// know that that the information from there can easily be outdated.
gracePeriod := u.heartBeatPeriod * 2
if readyCondition != nil && !currentTime.After(readyCondition.LastHeartbeatTime.Add(gracePeriod)) {
return n, false, nil
}
clone, err := api.Scheme.DeepCopy(n)
if err != nil {
return nil, false, err
}
n = clone.(*api.Node)
newNodeReadyCondition := api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: slaveReadyReason,
Message: slaveReadyMessage,
LastHeartbeatTime: currentTime,
}
found := false
for i := range n.Status.Conditions {
c := &n.Status.Conditions[i]
if c.Type == api.NodeReady {
if c.Status == newNodeReadyCondition.Status {
newNodeReadyCondition.LastTransitionTime = c.LastTransitionTime
} else {
newNodeReadyCondition.LastTransitionTime = currentTime
}
n.Status.Conditions[i] = newNodeReadyCondition
found = true
break
}
}
if !found {
newNodeReadyCondition.LastTransitionTime = currentTime
n.Status.Conditions = append(n.Status.Conditions, newNodeReadyCondition)
}
return n, true, nil
}
// setNodeStatus fills in the Status fields of the given Node, overwriting
// any fields that are currently set.
func (nm *realNodeManager) setNodeStatus(node *api.Node) error {
// Set addresses for the node.
if nm.cloud != nil {
instances, ok := nm.cloud.Instances()
if !ok {
return fmt.Errorf("failed to get instances from cloud provider")
}
// TODO(roberthbailey): Can we do this without having credentials to talk
// to the cloud provider?
// TODO(justinsb): We can if CurrentNodeName() was actually CurrentNode() and returned an interface
nodeAddresses, err := instances.NodeAddresses(nm.nodeName)
if err != nil {
return fmt.Errorf("failed to get node address from cloud provider: %v", err)
}
node.Status.Addresses = nodeAddresses
} else {
addr := net.ParseIP(nm.hostname)
if addr != nil {
node.Status.Addresses = []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: addr.String()},
{Type: api.NodeInternalIP, Address: addr.String()},
}
} else {
addrs, err := net.LookupIP(node.Name)
if err != nil {
return fmt.Errorf("can't get ip address of node %s: %v", node.Name, err)
} else if len(addrs) == 0 {
return fmt.Errorf("no ip address for node %v", node.Name)
} else {
// check all ip addresses for this node.Name and try to find the first non-loopback IPv4 address.
// If no match is found, it uses the IP of the interface with gateway on it.
for _, ip := range addrs {
if ip.IsLoopback() {
continue
}
if ip.To4() != nil {
node.Status.Addresses = []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: ip.String()},
{Type: api.NodeInternalIP, Address: ip.String()},
}
break
}
}
if len(node.Status.Addresses) == 0 {
ip, err := util.ChooseHostInterface()
if err != nil {
return err
}
node.Status.Addresses = []api.NodeAddress{
{Type: api.NodeLegacyHostIP, Address: ip.String()},
{Type: api.NodeInternalIP, Address: ip.String()},
}
}
}
}
}
// TODO: Post NotReady if we cannot get MachineInfo from cAdvisor. This needs to start
// cAdvisor locally, e.g. for test-cmd.sh, and in integration test.
info, err := nm.infoGetter.GetMachineInfo()
if err != nil {
// TODO(roberthbailey): This is required for test-cmd.sh to pass.
// See if the test should be updated instead.
node.Status.Capacity = api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(0, resource.DecimalSI),
api.ResourceMemory: resource.MustParse("0Gi"),
api.ResourcePods: *resource.NewQuantity(int64(nm.pods), resource.DecimalSI),
}
glog.Errorf("Error getting machine info: %v", err)
} else {
node.Status.NodeInfo.MachineID = info.MachineID
node.Status.NodeInfo.SystemUUID = info.SystemUUID
node.Status.Capacity = CapacityFromMachineInfo(info)
node.Status.Capacity[api.ResourcePods] = *resource.NewQuantity(
int64(nm.pods), resource.DecimalSI)
if node.Status.NodeInfo.BootID != "" &&
node.Status.NodeInfo.BootID != info.BootID {
// TODO: This requires a transaction, either both node status is updated
// and event is recorded or neither should happen, see issue #6055.
nm.recorder.Eventf(nm.nodeRef, "Rebooted",
"Node %s has been rebooted, boot id: %s", nm.nodeName, info.BootID)
}
node.Status.NodeInfo.BootID = info.BootID
}
verinfo, err := nm.infoGetter.GetVersionInfo()
if err != nil {
glog.Errorf("Error getting version info: %v", err)
} else {
node.Status.NodeInfo.KernelVersion = verinfo.KernelVersion
node.Status.NodeInfo.OsImage = verinfo.ContainerOsVersion
// TODO: Determine the runtime is docker or rocket
node.Status.NodeInfo.ContainerRuntimeVersion = "docker://" + verinfo.DockerVersion
node.Status.NodeInfo.KubeletVersion = version.Get().String()
// TODO: kube-proxy might be different version from kubelet in the future
node.Status.NodeInfo.KubeProxyVersion = version.Get().String()
}
node.Status.DaemonEndpoints = *nm.daemonEndpoints
// Check whether container runtime can be reported as up.
containerRuntimeUp := nm.infoGetter.ContainerRuntimeUp()
// Check whether network is configured properly
networkConfigured := nm.infoGetter.NetworkConfigured()
currentTime := unversioned.Now()
var newNodeReadyCondition api.NodeCondition
var oldNodeReadyConditionStatus api.ConditionStatus
if containerRuntimeUp && networkConfigured {
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: "kubelet is posting ready status",
LastHeartbeatTime: currentTime,
}
} else {
var reasons []string
var messages []string
if !containerRuntimeUp {
messages = append(messages, "container runtime is down")
}
if !networkConfigured {
messages = append(reasons, "network not configured correctly")
}
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionFalse,
Reason: "KubeletNotReady",
Message: strings.Join(messages, ","),
LastHeartbeatTime: currentTime,
}
}
updated := false
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeReady {
oldNodeReadyConditionStatus = node.Status.Conditions[i].Status
if oldNodeReadyConditionStatus == newNodeReadyCondition.Status {
newNodeReadyCondition.LastTransitionTime = node.Status.Conditions[i].LastTransitionTime
} else {
newNodeReadyCondition.LastTransitionTime = currentTime
}
node.Status.Conditions[i] = newNodeReadyCondition
updated = true
}
}
if !updated {
newNodeReadyCondition.LastTransitionTime = currentTime
node.Status.Conditions = append(node.Status.Conditions, newNodeReadyCondition)
}
if !updated || oldNodeReadyConditionStatus != newNodeReadyCondition.Status {
if newNodeReadyCondition.Status == api.ConditionTrue {
nm.recordNodeStatusEvent("NodeReady")
} else {
nm.recordNodeStatusEvent("NodeNotReady")
}
}
if oldNodeUnschedulable != node.Spec.Unschedulable {
if node.Spec.Unschedulable {
nm.recordNodeStatusEvent("NodeNotSchedulable")
} else {
nm.recordNodeStatusEvent("NodeSchedulable")
}
oldNodeUnschedulable = node.Spec.Unschedulable
}
return nil
}
// Set OODcondition for the node.
func (kl *Kubelet) setNodeOODCondition(node *api.Node) {
currentTime := unversioned.NewTime(kl.clock.Now())
var nodeOODCondition *api.NodeCondition
// Check if NodeOutOfDisk condition already exists and if it does, just pick it up for update.
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeOutOfDisk {
nodeOODCondition = &node.Status.Conditions[i]
}
}
newOODCondition := false
// If the NodeOutOfDisk condition doesn't exist, create one.
if nodeOODCondition == nil {
nodeOODCondition = &api.NodeCondition{
Type: api.NodeOutOfDisk,
Status: api.ConditionUnknown,
}
// nodeOODCondition cannot be appended to node.Status.Conditions here because it gets
// copied to the slice. So if we append nodeOODCondition to the slice here none of the
// updates we make to nodeOODCondition below are reflected in the slice.
newOODCondition = true
}
// Update the heartbeat time irrespective of all the conditions.
nodeOODCondition.LastHeartbeatTime = currentTime
// Note: The conditions below take care of the case when a new NodeOutOfDisk condition is
// created and as well as the case when the condition already exists. When a new condition
// is created its status is set to api.ConditionUnknown which matches either
// nodeOODCondition.Status != api.ConditionTrue or
// nodeOODCondition.Status != api.ConditionFalse in the conditions below depending on whether
// the kubelet is out of disk or not.
if kl.isOutOfDisk() {
if nodeOODCondition.Status != api.ConditionTrue {
nodeOODCondition.Status = api.ConditionTrue
nodeOODCondition.Reason = "KubeletOutOfDisk"
nodeOODCondition.Message = "out of disk space"
nodeOODCondition.LastTransitionTime = currentTime
kl.recordNodeStatusEvent(api.EventTypeNormal, "NodeOutOfDisk")
}
} else {
if nodeOODCondition.Status != api.ConditionFalse {
// Update the out of disk condition when the condition status is unknown even if we
// are within the outOfDiskTransitionFrequency duration. We do this to set the
// condition status correctly at kubelet startup.
if nodeOODCondition.Status == api.ConditionUnknown || kl.clock.Since(nodeOODCondition.LastTransitionTime.Time) >= kl.outOfDiskTransitionFrequency {
nodeOODCondition.Status = api.ConditionFalse
nodeOODCondition.Reason = "KubeletHasSufficientDisk"
nodeOODCondition.Message = "kubelet has sufficient disk space available"
nodeOODCondition.LastTransitionTime = currentTime
kl.recordNodeStatusEvent(api.EventTypeNormal, "NodeHasSufficientDisk")
} else {
glog.Infof("Node condition status for OutOfDisk is false, but last transition time is less than %s", kl.outOfDiskTransitionFrequency)
}
}
}
if newOODCondition {
node.Status.Conditions = append(node.Status.Conditions, *nodeOODCondition)
}
}
// setNodeStatus fills in the Status fields of the given Node, overwriting
// any fields that are currently set.
func (nm *realNodeManager) setNodeStatus(node *api.Node) error {
// Set addresses for the node. These addresses may be stale if there is an
// error retrieving an updated value, such as the cloudprovider API being
// unavailable.
if nm.cloud != nil {
nm.setUpdatedAddressesFromCloud(node)
} else {
nm.setUpdatedAddressesFromHostname(node)
}
// TODO: Post NotReady if we cannot get MachineInfo from cAdvisor. This needs to start
// cAdvisor locally, e.g. for test-cmd.sh, and in integration test.
info, err := nm.infoGetter.GetMachineInfo()
if err != nil {
// TODO(roberthbailey): This is required for test-cmd.sh to pass.
// See if the test should be updated instead.
node.Status.Capacity = api.ResourceList{
api.ResourceCPU: *resource.NewMilliQuantity(0, resource.DecimalSI),
api.ResourceMemory: resource.MustParse("0Gi"),
api.ResourcePods: *resource.NewQuantity(int64(nm.pods), resource.DecimalSI),
}
glog.Errorf("Error getting machine info: %v", err)
} else {
node.Status.NodeInfo.MachineID = info.MachineID
node.Status.NodeInfo.SystemUUID = info.SystemUUID
node.Status.Capacity = CapacityFromMachineInfo(info)
node.Status.Capacity[api.ResourcePods] = *resource.NewQuantity(
int64(nm.pods), resource.DecimalSI)
if node.Status.NodeInfo.BootID != "" &&
node.Status.NodeInfo.BootID != info.BootID {
// TODO: This requires a transaction, either both node status is updated
// and event is recorded or neither should happen, see issue #6055.
nm.recorder.Eventf(nm.nodeRef, "Rebooted",
"Node %s has been rebooted, boot id: %s", nm.nodeName, info.BootID)
}
node.Status.NodeInfo.BootID = info.BootID
}
verinfo, err := nm.infoGetter.GetVersionInfo()
if err != nil {
glog.Errorf("Error getting version info: %v", err)
} else {
node.Status.NodeInfo.KernelVersion = verinfo.KernelVersion
node.Status.NodeInfo.OsImage = verinfo.ContainerOsVersion
// TODO: Determine the runtime is docker or rocket
node.Status.NodeInfo.ContainerRuntimeVersion = "docker://" + verinfo.DockerVersion
node.Status.NodeInfo.KubeletVersion = version.Get().String()
// TODO: kube-proxy might be different version from kubelet in the future
node.Status.NodeInfo.KubeProxyVersion = version.Get().String()
}
node.Status.DaemonEndpoints = *nm.daemonEndpoints
// Check whether container runtime can be reported as up.
containerRuntimeUp := nm.infoGetter.ContainerRuntimeUp()
// Check whether network is configured properly
networkConfigured := nm.infoGetter.NetworkConfigured()
currentTime := unversioned.Now()
var newNodeReadyCondition api.NodeCondition
var oldNodeReadyConditionStatus api.ConditionStatus
if containerRuntimeUp && networkConfigured {
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: "KubeletReady",
Message: "kubelet is posting ready status",
LastHeartbeatTime: currentTime,
}
} else {
var reasons []string
var messages []string
if !containerRuntimeUp {
messages = append(messages, "container runtime is down")
}
if !networkConfigured {
messages = append(reasons, "network not configured correctly")
}
newNodeReadyCondition = api.NodeCondition{
Type: api.NodeReady,
Status: api.ConditionFalse,
Reason: "KubeletNotReady",
Message: strings.Join(messages, ","),
LastHeartbeatTime: currentTime,
}
}
updated := false
for i := range node.Status.Conditions {
if node.Status.Conditions[i].Type == api.NodeReady {
oldNodeReadyConditionStatus = node.Status.Conditions[i].Status
if oldNodeReadyConditionStatus == newNodeReadyCondition.Status {
newNodeReadyCondition.LastTransitionTime = node.Status.Conditions[i].LastTransitionTime
} else {
newNodeReadyCondition.LastTransitionTime = currentTime
}
node.Status.Conditions[i] = newNodeReadyCondition
updated = true
}
}
if !updated {
newNodeReadyCondition.LastTransitionTime = currentTime
node.Status.Conditions = append(node.Status.Conditions, newNodeReadyCondition)
}
if !updated || oldNodeReadyConditionStatus != newNodeReadyCondition.Status {
if newNodeReadyCondition.Status == api.ConditionTrue {
nm.recordNodeStatusEvent("NodeReady")
} else {
nm.recordNodeStatusEvent("NodeNotReady")
}
}
if oldNodeUnschedulable != node.Spec.Unschedulable {
if node.Spec.Unschedulable {
nm.recordNodeStatusEvent("NodeNotSchedulable")
} else {
nm.recordNodeStatusEvent("NodeSchedulable")
}
oldNodeUnschedulable = node.Spec.Unschedulable
}
return nil
}