// Filters the nodes to find the ones that fit based on the given predicate functions
// Each node is passed through the predicate functions to determine if it is a fit
func findNodesThatFit(
pod *api.Pod,
nodeNameToInfo map[string]*schedulercache.NodeInfo,
nodes []*api.Node,
predicateFuncs map[string]algorithm.FitPredicate,
extenders []algorithm.SchedulerExtender) ([]*api.Node, FailedPredicateMap, error) {
var filtered []*api.Node
failedPredicateMap := FailedPredicateMap{}
if len(predicateFuncs) == 0 {
filtered = nodes
} else {
// Create filtered list with enough space to avoid growing it
// and allow assigning.
filtered = make([]*api.Node, len(nodes))
meta := predicates.PredicateMetadata(pod, nodeNameToInfo)
errs := []error{}
var predicateResultLock sync.Mutex
var filteredLen int32
checkNode := func(i int) {
nodeName := nodes[i].Name
fits, failedPredicate, err := podFitsOnNode(pod, meta, nodeNameToInfo[nodeName], predicateFuncs)
if err != nil {
predicateResultLock.Lock()
errs = append(errs, err)
predicateResultLock.Unlock()
return
}
if fits {
filtered[atomic.AddInt32(&filteredLen, 1)-1] = nodes[i]
} else {
predicateResultLock.Lock()
failedPredicateMap[nodeName] = failedPredicate
predicateResultLock.Unlock()
}
}
workqueue.Parallelize(16, len(nodes), checkNode)
filtered = filtered[:filteredLen]
if len(errs) > 0 {
return []*api.Node{}, FailedPredicateMap{}, errors.NewAggregate(errs)
}
}
if len(filtered) > 0 && len(extenders) != 0 {
for _, extender := range extenders {
filteredList, err := extender.Filter(pod, filtered)
if err != nil {
return []*api.Node{}, FailedPredicateMap{}, err
}
filtered = filteredList
if len(filtered) == 0 {
break
}
}
}
return filtered, failedPredicateMap, nil
}
func (dsc *DaemonSetsController) nodeShouldRunDaemonPod(node *api.Node, ds *extensions.DaemonSet) bool {
// If the daemon set specifies a node name, check that it matches with node.Name.
if !(ds.Spec.Template.Spec.NodeName == "" || ds.Spec.Template.Spec.NodeName == node.Name) {
return false
}
// TODO: Move it to the predicates
for _, c := range node.Status.Conditions {
if c.Type == api.NodeOutOfDisk && c.Status == api.ConditionTrue {
return false
}
}
newPod := &api.Pod{Spec: ds.Spec.Template.Spec, ObjectMeta: ds.Spec.Template.ObjectMeta}
newPod.Spec.NodeName = node.Name
pods := []*api.Pod{}
for _, m := range dsc.podStore.Indexer.List() {
pod := m.(*api.Pod)
if pod.Spec.NodeName != node.Name {
continue
}
if pod.Status.Phase == api.PodSucceeded || pod.Status.Phase == api.PodFailed {
continue
}
// ignore pods that belong to the daemonset when taking into account whether
// a daemonset should bind to a node.
if pds := dsc.getPodDaemonSet(pod); pds != nil && ds.Name == pds.Name {
continue
}
pods = append(pods, pod)
}
nodeInfo := schedulercache.NewNodeInfo(pods...)
nodeInfo.SetNode(node)
fit, reasons, err := predicates.GeneralPredicates(newPod, nil, nodeInfo)
if err != nil {
glog.Warningf("GeneralPredicates failed on pod %s due to unexpected error: %v", newPod.Name, err)
}
for _, r := range reasons {
glog.V(2).Infof("GeneralPredicates failed on pod %s for reason: %v", newPod.Name, r.GetReason())
}
if !fit {
return false
}
fit, reasons, err = predicates.PodToleratesNodeTaints(newPod, predicates.PredicateMetadata(newPod, nil), nodeInfo)
if err != nil {
glog.Warningf("PodToleratesNodeTaints failed on pod %s due to unexpected error: %v", newPod.Name, err)
}
for _, r := range reasons {
glog.V(2).Infof("PodToleratesNodeTaints failed on pod %s for reason: %v", newPod.Name, r.GetReason())
}
return fit
}
// Filters the nodes to find the ones that fit based on the given predicate functions
// Each node is passed through the predicate functions to determine if it is a fit
func findNodesThatFit(pod *api.Pod, nodeNameToInfo map[string]*schedulercache.NodeInfo, predicateFuncs map[string]algorithm.FitPredicate, nodes api.NodeList, extenders []algorithm.SchedulerExtender) (api.NodeList, FailedPredicateMap, error) {
// Create filtered list with enough space to avoid growing it.
filtered := make([]api.Node, 0, len(nodes.Items))
failedPredicateMap := FailedPredicateMap{}
if len(predicateFuncs) == 0 {
filtered = nodes.Items
} else {
predicateResultLock := sync.Mutex{}
errs := []error{}
meta := predicates.PredicateMetadata(pod)
checkNode := func(i int) {
nodeName := nodes.Items[i].Name
fits, failedPredicate, err := podFitsOnNode(pod, meta, nodeNameToInfo[nodeName], predicateFuncs)
predicateResultLock.Lock()
defer predicateResultLock.Unlock()
if err != nil {
errs = append(errs, err)
return
}
if fits {
filtered = append(filtered, nodes.Items[i])
} else {
failedPredicateMap[nodeName] = failedPredicate
}
}
workqueue.Parallelize(16, len(nodes.Items), checkNode)
if len(errs) > 0 {
return api.NodeList{}, FailedPredicateMap{}, errors.NewAggregate(errs)
}
}
if len(filtered) > 0 && len(extenders) != 0 {
for _, extender := range extenders {
filteredList, err := extender.Filter(pod, &api.NodeList{Items: filtered})
if err != nil {
return api.NodeList{}, FailedPredicateMap{}, err
}
filtered = filteredList.Items
if len(filtered) == 0 {
break
}
}
}
return api.NodeList{Items: filtered}, failedPredicateMap, nil
}