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add toleration match in rescheduling 

Signed-off-by: changzhen <changzhen5@huawei.com>
This commit is contained in:
changzhen 2021-07-31 15:32:52 +08:00
parent 7a35aa069d
commit db441697e8
1 changed files with 27 additions and 17 deletions
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44
pkg/scheduler/scheduler.go
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@ -19,6 +19,7 @@ import (
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog/v2"
v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
clusterv1alpha1 "github.com/karmada-io/karmada/pkg/apis/cluster/v1alpha1"
policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
@ -729,12 +730,14 @@ func (s *Scheduler) rescheduleResourceBinding(resourceBinding *workv1alpha1.Reso
return nil
}
func calcReservedCluster(total, ready sets.String) sets.String {
return total.Difference(total.Difference(ready))
// calcReservedCluster eliminates the not-ready clusters from the 'bindClusters'.
func calcReservedCluster(bindClusters, readyClusters sets.String) sets.String {
return bindClusters.Difference(bindClusters.Difference(readyClusters))
}
func calcAvailableCluster(total, ready sets.String) sets.String {
return ready.Difference(total)
// calcAvailableCluster returns a list of ready clusters that not in 'bindClusters'.
func calcAvailableCluster(bindCluster, readyClusters sets.String) sets.String {
return readyClusters.Difference(bindCluster)
}
func (s *Scheduler) obtainTargetCluster(bindingClusters []workv1alpha1.TargetCluster, placement policyv1alpha1.Placement) (sets.String, error) {
@ -744,20 +747,27 @@ func (s *Scheduler) obtainTargetCluster(bindingClusters []workv1alpha1.TargetClu
reservedClusters := calcReservedCluster(totalClusters, readyClusters)
availableClusters := calcAvailableCluster(totalClusters, readyClusters)
candidateClusters := sets.NewString()
if placement.ClusterAffinity == nil {
candidateClusters.Insert(availableClusters.List()...)
} else {
for clusterName := range availableClusters {
clusterObj, err := s.clusterLister.Get(clusterName)
if err != nil {
klog.Errorf("Failed to get clusterObj by clusterName: %s", clusterName)
return nil, err
}
filterPredicate := func(t *corev1.Taint) bool {
// now only interested in NoSchedule taint which means do not allow new resource to schedule onto the cluster unless they tolerate the taint
// todo: supprot NoExecute taint
return t.Effect == corev1.TaintEffectNoSchedule
}
if util.ClusterMatches(clusterObj, *placement.ClusterAffinity) {
candidateClusters.Insert(clusterName)
}
candidateClusters := sets.NewString()
for clusterName := range availableClusters {
clusterObj, err := s.clusterLister.Get(clusterName)
if err != nil {
klog.Errorf("Failed to get clusterObj by clusterName: %s", clusterName)
return nil, err
}
if placement.ClusterAffinity != nil && !util.ClusterMatches(clusterObj, *placement.ClusterAffinity) {
continue
}
_, isUntolerated := v1helper.FindMatchingUntoleratedTaint(clusterObj.Spec.Taints, placement.ClusterTolerations, filterPredicate)
if !isUntolerated {
candidateClusters.Insert(clusterName)
}
}