func (dsc *DaemonSetsController) nodeShouldRunDaemonPod(node *api.Node, ds *extensions.DaemonSet) bool {
// Check if the node satisfies the daemon set's node selector.
nodeSelector := labels.Set(ds.Spec.Template.Spec.NodeSelector).AsSelector()
if !nodeSelector.Matches(labels.Set(node.Labels)) {
return false
}
// 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
}
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}
newPod.Spec.NodeName = node.Name
pods := []*api.Pod{newPod}
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 wheter
// a daemonset should bind to a node.
if pds := dsc.getPodDaemonSet(pod); pds != nil && ds.Name == pds.Name {
continue
}
pods = append(pods, pod)
}
_, notFittingCPU, notFittingMemory, notFittingNvidiaGPU := predicates.CheckPodsExceedingFreeResources(pods, node.Status.Allocatable)
if len(notFittingCPU)+len(notFittingMemory)+len(notFittingNvidiaGPU) != 0 {
dsc.eventRecorder.Eventf(ds, api.EventTypeNormal, "FailedPlacement", "failed to place pod on %q: insufficent free resources", node.ObjectMeta.Name)
return false
}
ports := sets.String{}
for _, pod := range pods {
if errs := validation.AccumulateUniqueHostPorts(pod.Spec.Containers, &ports, field.NewPath("spec", "containers")); len(errs) > 0 {
dsc.eventRecorder.Eventf(ds, api.EventTypeNormal, "FailedPlacement", "failed to place pod on %q: host port conflict", node.ObjectMeta.Name)
return false
}
}
return true
}
func (dsc *DaemonSetsController) nodeShouldRunDaemonPod(node *api.Node, ds *extensions.DaemonSet) bool {
// Check if the node satisfies the daemon set's node selector.
nodeSelector := labels.Set(ds.Spec.Template.Spec.NodeSelector).AsSelector()
if !nodeSelector.Matches(labels.Set(node.Labels)) {
return false
}
// 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
}
// If the node is not ready, don't run on it.
// TODO(mikedanese): remove this once daemonpods forgive nodes
if !api.IsNodeReady(node) {
return false
}
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}
newPod.Spec.NodeName = node.Name
pods := []*api.Pod{newPod}
for _, m := range dsc.podStore.Store.List() {
pod := m.(*api.Pod)
if pod.Spec.NodeName != node.Name {
continue
}
pods = append(pods, pod)
}
_, notFittingCPU, notFittingMemory := predicates.CheckPodsExceedingFreeResources(pods, node.Status.Allocatable)
if len(notFittingCPU)+len(notFittingMemory) != 0 {
return false
}
ports := sets.String{}
for _, pod := range pods {
if errs := validation.AccumulateUniqueHostPorts(pod.Spec.Containers, &ports, field.NewPath("spec", "containers")); len(errs) > 0 {
return false
}
}
return true
}