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Merge pull request #127447 from sanposhiho/bug-topologyspread
fix(topologyspread): register UpdatePodTolerations when QHint is enabled
This commit is contained in:
Kubernetes Prow Robot
GitHub
@@ -19,9 +19,9 @@ package podtopologyspread
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import (
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"context"
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"fmt"
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"reflect"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/informers"
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@@ -69,6 +69,7 @@ type PodTopologySpread struct {
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statefulSets appslisters.StatefulSetLister
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enableNodeInclusionPolicyInPodTopologySpread bool
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enableMatchLabelKeysInPodTopologySpread bool
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enableSchedulingQueueHint bool
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}
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var _ framework.PreFilterPlugin = &PodTopologySpread{}
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@@ -103,6 +104,7 @@ func New(_ context.Context, plArgs runtime.Object, h framework.Handle, fts featu
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defaultConstraints: args.DefaultConstraints,
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enableNodeInclusionPolicyInPodTopologySpread: fts.EnableNodeInclusionPolicyInPodTopologySpread,
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enableMatchLabelKeysInPodTopologySpread: fts.EnableMatchLabelKeysInPodTopologySpread,
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enableSchedulingQueueHint: fts.EnableSchedulingQueueHint,
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}
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if args.DefaultingType == config.SystemDefaulting {
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pl.defaultConstraints = systemDefaultConstraints
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@@ -135,6 +137,19 @@ func (pl *PodTopologySpread) setListers(factory informers.SharedInformerFactory)
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// EventsToRegister returns the possible events that may make a Pod
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// failed by this plugin schedulable.
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func (pl *PodTopologySpread) EventsToRegister(_ context.Context) ([]framework.ClusterEventWithHint, error) {
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podActionType := framework.Add | framework.UpdatePodLabel | framework.Delete
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if pl.enableSchedulingQueueHint {
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// When the QueueingHint feature is enabled, the scheduling queue uses Pod/Update Queueing Hint
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// to determine whether a Pod's update makes the Pod schedulable or not.
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// https://github.com/kubernetes/kubernetes/pull/122234
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// (If not, the scheduling queue always retries the unschedulable Pods when they're updated.)
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//
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// The Pod rejected by this plugin can be schedulable when the Pod has a spread constraint with NodeTaintsPolicy:Honor
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// and has got a new toleration.
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// So, we add UpdatePodTolerations here only when QHint is enabled.
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podActionType = framework.Add | framework.UpdatePodLabel | framework.UpdatePodTolerations | framework.Delete
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}
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return []framework.ClusterEventWithHint{
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// All ActionType includes the following events:
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// - Add. An unschedulable Pod may fail due to violating topology spread constraints,
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@@ -143,15 +158,27 @@ func (pl *PodTopologySpread) EventsToRegister(_ context.Context) ([]framework.Cl
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// an unschedulable Pod schedulable.
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// - Delete. An unschedulable Pod may fail due to violating an existing Pod's topology spread constraints,
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// deleting an existing Pod may make it schedulable.
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{Event: framework.ClusterEvent{Resource: framework.Pod, ActionType: framework.Add | framework.UpdatePodLabel | framework.Delete}, QueueingHintFn: pl.isSchedulableAfterPodChange},
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{Event: framework.ClusterEvent{Resource: framework.Pod, ActionType: podActionType}, QueueingHintFn: pl.isSchedulableAfterPodChange},
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// Node add|delete|update maybe lead an topology key changed,
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// and make these pod in scheduling schedulable or unschedulable.
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{Event: framework.ClusterEvent{Resource: framework.Node, ActionType: framework.Add | framework.Delete | framework.UpdateNodeLabel | framework.UpdateNodeTaint}, QueueingHintFn: pl.isSchedulableAfterNodeChange},
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}, nil
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}
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// involvedInTopologySpreading returns true if the incomingPod is involved in the topology spreading of podWithSpreading.
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func involvedInTopologySpreading(incomingPod, podWithSpreading *v1.Pod) bool {
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return incomingPod.Spec.NodeName != "" && incomingPod.Namespace == podWithSpreading.Namespace
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return incomingPod.UID == podWithSpreading.UID ||
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(incomingPod.Spec.NodeName != "" && incomingPod.Namespace == podWithSpreading.Namespace)
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}
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// hasConstraintWithNodeTaintsPolicyHonor returns true if any constraint has `NodeTaintsPolicy: Honor`.
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func hasConstraintWithNodeTaintsPolicyHonor(constraints []topologySpreadConstraint) bool {
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for _, c := range constraints {
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if c.NodeTaintsPolicy == v1.NodeInclusionPolicyHonor {
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return true
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}
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}
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return false
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}
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func (pl *PodTopologySpread) isSchedulableAfterPodChange(logger klog.Logger, pod *v1.Pod, oldObj, newObj interface{}) (framework.QueueingHint, error) {
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@@ -173,8 +200,15 @@ func (pl *PodTopologySpread) isSchedulableAfterPodChange(logger klog.Logger, pod
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// Pod is modified. Return Queue when the label(s) matching topologySpread's selector is added, changed, or deleted.
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if modifiedPod != nil && originalPod != nil {
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if reflect.DeepEqual(modifiedPod.Labels, originalPod.Labels) {
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logger.V(5).Info("the updated pod is unscheduled or has no updated labels or has different namespace with target pod, so it doesn't make the target pod schedulable",
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if pod.UID == modifiedPod.UID && !equality.Semantic.DeepEqual(modifiedPod.Spec.Tolerations, originalPod.Spec.Tolerations) && hasConstraintWithNodeTaintsPolicyHonor(constraints) {
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// If any constraint has `NodeTaintsPolicy: Honor`, we can return Queue when the target Pod has got a new toleration.
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logger.V(5).Info("the unschedulable pod has got a new toleration, which could make it schedulable",
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"pod", klog.KObj(pod), "modifiedPod", klog.KObj(modifiedPod))
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return framework.Queue, nil
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}
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if equality.Semantic.DeepEqual(modifiedPod.Labels, originalPod.Labels) {
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logger.V(5).Info("the pod's update doesn't include the label update, which doesn't make the target pod schedulable",
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"pod", klog.KObj(pod), "modifiedPod", klog.KObj(modifiedPod))
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return framework.QueueSkip, nil
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}
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@@ -27,6 +27,7 @@ import (
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"k8s.io/kubernetes/pkg/scheduler/framework"
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plugintesting "k8s.io/kubernetes/pkg/scheduler/framework/plugins/testing"
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st "k8s.io/kubernetes/pkg/scheduler/testing"
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"k8s.io/utils/ptr"
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)
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func Test_isSchedulableAfterNodeChange(t *testing.T) {
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@@ -155,145 +156,187 @@ func Test_isSchedulableAfterPodChange(t *testing.T) {
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oldPod, newPod *v1.Pod
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expectedHint framework.QueueingHint
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expectedErr bool
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enableNodeInclusionPolicyInPodTopologySpread bool
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}{
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{
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name: "add pod with labels match topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
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expectedHint: framework.Queue,
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},
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{
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name: "add un-scheduled pod",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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newPod: st.MakePod().Label("foo", "").Obj(),
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newPod: st.MakePod().UID("p2").Label("foo", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "update un-scheduled pod",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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newPod: st.MakePod().Label("foo", "").Obj(),
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oldPod: st.MakePod().Label("bar", "").Obj(),
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newPod: st.MakePod().UID("p2").Label("foo", "").Obj(),
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oldPod: st.MakePod().UID("p2").Label("bar", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "delete un-scheduled pod",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Label("foo", "").Obj(),
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oldPod: st.MakePod().UID("p2").Label("foo", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "add pod with different namespace",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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newPod: st.MakePod().Node("fake-node").Namespace("fake-namespace").Label("foo", "").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Namespace("fake-namespace").Label("foo", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "add pod with labels don't match topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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newPod: st.MakePod().Node("fake-node").Label("bar", "").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("bar", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "delete pod with labels that match topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
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expectedHint: framework.Queue,
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},
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{
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name: "delete pod with labels that don't match topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("bar", "").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("bar", "").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "update pod's non-related label",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar1").Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar1").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "add pod's label that matches topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
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expectedHint: framework.Queue,
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},
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{
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name: "delete pod label that matches topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
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newPod: st.MakePod().Node("fake-node").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Obj(),
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expectedHint: framework.Queue,
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},
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{
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name: "change pod's label that matches topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "foo1").Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "foo2").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "foo1").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "foo2").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "change pod's label that doesn't match topologySpreadConstraints selector",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar1").Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar1").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
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expectedHint: framework.QueueSkip,
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},
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{
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name: "add pod's label that matches topologySpreadConstraints selector with multi topologySpreadConstraints",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
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SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
|
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
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expectedHint: framework.Queue,
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},
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{
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name: "change pod's label that doesn't match topologySpreadConstraints selector with multi topologySpreadConstraints",
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pod: st.MakePod().Name("p").Label("foo", "").
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
|
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SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
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Obj(),
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oldPod: st.MakePod().Node("fake-node").Label("foo", "").Obj(),
|
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newPod: st.MakePod().Node("fake-node").Label("foo", "").Label("baz", "").Obj(),
|
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oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Obj(),
|
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newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("baz", "").Obj(),
|
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expectedHint: framework.QueueSkip,
|
||||
},
|
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{
|
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name: "change pod's label that match topologySpreadConstraints selector with multi topologySpreadConstraints",
|
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pod: st.MakePod().Name("p").Label("foo", "").
|
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pod: st.MakePod().UID("p").Name("p").Label("foo", "").
|
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SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
|
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SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
||||
Obj(),
|
||||
oldPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "").Obj(),
|
||||
newPod: st.MakePod().Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
|
||||
oldPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "").Obj(),
|
||||
newPod: st.MakePod().UID("p2").Node("fake-node").Label("foo", "").Label("bar", "bar2").Obj(),
|
||||
expectedHint: framework.QueueSkip,
|
||||
},
|
||||
{
|
||||
name: "the unschedulable Pod has topologySpreadConstraint with NodeTaintsPolicy:Honor and has got a new toleration",
|
||||
pod: st.MakePod().UID("p").Name("p").Label("foo", "").
|
||||
SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, ptr.To(v1.NodeInclusionPolicyHonor), nil).
|
||||
SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
||||
Obj(),
|
||||
oldPod: st.MakePod().UID("p").Name("p").Label("foo", "").Obj(),
|
||||
newPod: st.MakePod().UID("p").Name("p").Label("foo", "").Toleration(v1.TaintNodeUnschedulable).Obj(),
|
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expectedHint: framework.Queue,
|
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enableNodeInclusionPolicyInPodTopologySpread: true,
|
||||
},
|
||||
{
|
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name: "the unschedulable Pod has topologySpreadConstraint without NodeTaintsPolicy:Honor and has got a new toleration",
|
||||
pod: st.MakePod().UID("p").Name("p").Label("foo", "").
|
||||
SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, ptr.To(v1.NodeInclusionPolicyIgnore), nil).
|
||||
SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
||||
Obj(),
|
||||
oldPod: st.MakePod().UID("p").Name("p").Label("foo", "").Obj(),
|
||||
newPod: st.MakePod().UID("p").Name("p").Label("foo", "").Toleration(v1.TaintNodeUnschedulable).Obj(),
|
||||
expectedHint: framework.QueueSkip,
|
||||
},
|
||||
{
|
||||
name: "the unschedulable Pod has topologySpreadConstraint and has got a new label matching the selector of the constraint",
|
||||
pod: st.MakePod().UID("p").Name("p").Label("foo", "").
|
||||
SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, ptr.To(v1.NodeInclusionPolicyIgnore), nil).
|
||||
SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
||||
Obj(),
|
||||
oldPod: st.MakePod().UID("p").Name("p").Obj(),
|
||||
newPod: st.MakePod().UID("p").Name("p").Label("foo", "").Obj(),
|
||||
expectedHint: framework.Queue,
|
||||
},
|
||||
{
|
||||
name: "the unschedulable Pod has topologySpreadConstraint and has got a new unrelated label",
|
||||
pod: st.MakePod().UID("p").Name("p").Label("foo", "").
|
||||
SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, ptr.To(v1.NodeInclusionPolicyIgnore), nil).
|
||||
SpreadConstraint(1, "node", v1.DoNotSchedule, barSelector, nil, nil, nil, nil).
|
||||
Obj(),
|
||||
oldPod: st.MakePod().UID("p").Name("p").Obj(),
|
||||
newPod: st.MakePod().UID("p").Name("p").Label("unrelated", "").Obj(),
|
||||
expectedHint: framework.QueueSkip,
|
||||
},
|
||||
}
|
||||
@@ -303,6 +346,8 @@ func Test_isSchedulableAfterPodChange(t *testing.T) {
|
||||
snapshot := cache.NewSnapshot(nil, nil)
|
||||
pl := plugintesting.SetupPlugin(ctx, t, topologySpreadFunc, &config.PodTopologySpreadArgs{DefaultingType: config.ListDefaulting}, snapshot)
|
||||
p := pl.(*PodTopologySpread)
|
||||
p.enableNodeInclusionPolicyInPodTopologySpread = tc.enableNodeInclusionPolicyInPodTopologySpread
|
||||
|
||||
actualHint, err := p.isSchedulableAfterPodChange(logger, tc.pod, tc.oldPod, tc.newPod)
|
||||
if tc.expectedErr {
|
||||
require.Error(t, err)
|
||||
|
||||
Reference in New Issue
Block a user