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Merge pull request #84984 from cofyc/fix84942

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apps/StatefulSets: Garbage collector should be able to orphan ControllerRevisions too
This commit is contained in:
Kubernetes Prow Robot 2020-02-14 01:06:18 -08:00 committed by GitHub
commit 7fe64ccb82
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2 changed files with 68 additions and 38 deletions
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25
pkg/controller/statefulset/stateful_set.go
View File

@ -23,7 +23,7 @@ import (
"time"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
@ -289,9 +289,14 @@ func (ssc *StatefulSetController) getPodsForStatefulSet(set *apps.StatefulSet, s
return isMemberOf(set, pod)
}
// If any adoptions are attempted, we should first recheck for deletion with
// an uncached quorum read sometime after listing Pods (see #42639).
canAdoptFunc := controller.RecheckDeletionTimestamp(func() (metav1.Object, error) {
cm := controller.NewPodControllerRefManager(ssc.podControl, set, selector, controllerKind, ssc.canAdoptFunc(set))
return cm.ClaimPods(pods, filter)
}
// If any adoptions are attempted, we should first recheck for deletion with
// an uncached quorum read sometime after listing Pods/ControllerRevisions (see #42639).
func (ssc *StatefulSetController) canAdoptFunc(set *apps.StatefulSet) func() error {
return controller.RecheckDeletionTimestamp(func() (metav1.Object, error) {
fresh, err := ssc.kubeClient.AppsV1().StatefulSets(set.Namespace).Get(context.TODO(), set.Name, metav1.GetOptions{})
if err != nil {
return nil, err
@ -301,9 +306,6 @@ func (ssc *StatefulSetController) getPodsForStatefulSet(set *apps.StatefulSet, s
}
return fresh, nil
})
cm := controller.NewPodControllerRefManager(ssc.podControl, set, selector, controllerKind, canAdoptFunc)
return cm.ClaimPods(pods, filter)
}
// adoptOrphanRevisions adopts any orphaned ControllerRevisions matched by set's Selector.
@ -319,12 +321,9 @@ func (ssc *StatefulSetController) adoptOrphanRevisions(set *apps.StatefulSet) er
}
}
if len(orphanRevisions) > 0 {
fresh, err := ssc.kubeClient.AppsV1().StatefulSets(set.Namespace).Get(context.TODO(), set.Name, metav1.GetOptions{})
if err != nil {
return err
}
if fresh.UID != set.UID {
return fmt.Errorf("original StatefulSet %v/%v is gone: got uid %v, wanted %v", set.Namespace, set.Name, fresh.UID, set.UID)
canAdoptErr := ssc.canAdoptFunc(set)()
if canAdoptErr != nil {
return fmt.Errorf("can't adopt ControllerRevisions: %v", canAdoptErr)
}
return ssc.control.AdoptOrphanRevisions(set, orphanRevisions)
}

81
pkg/controller/statefulset/stateful_set_test.go
View File

@ -23,7 +23,7 @@ import (
"testing"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
@ -42,7 +42,7 @@ func alwaysReady() bool { return true }
func TestStatefulSetControllerCreates(t *testing.T) {
set := newStatefulSet(3)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
if err := scaleUpStatefulSetController(set, ssc, spc); err != nil {
t.Errorf("Failed to turn up StatefulSet : %s", err)
}
@ -58,7 +58,7 @@ func TestStatefulSetControllerCreates(t *testing.T) {
func TestStatefulSetControllerDeletes(t *testing.T) {
set := newStatefulSet(3)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
if err := scaleUpStatefulSetController(set, ssc, spc); err != nil {
t.Errorf("Failed to turn up StatefulSet : %s", err)
}
@ -86,7 +86,7 @@ func TestStatefulSetControllerDeletes(t *testing.T) {
func TestStatefulSetControllerRespectsTermination(t *testing.T) {
set := newStatefulSet(3)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
if err := scaleUpStatefulSetController(set, ssc, spc); err != nil {
t.Errorf("Failed to turn up StatefulSet : %s", err)
}
@ -137,7 +137,7 @@ func TestStatefulSetControllerRespectsTermination(t *testing.T) {
func TestStatefulSetControllerBlocksScaling(t *testing.T) {
set := newStatefulSet(3)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
if err := scaleUpStatefulSetController(set, ssc, spc); err != nil {
t.Errorf("Failed to turn up StatefulSet : %s", err)
}
@ -185,7 +185,7 @@ func TestStatefulSetControllerBlocksScaling(t *testing.T) {
func TestStatefulSetControllerDeletionTimestamp(t *testing.T) {
set := newStatefulSet(3)
set.DeletionTimestamp = new(metav1.Time)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
spc.setsIndexer.Add(set)
@ -210,7 +210,7 @@ func TestStatefulSetControllerDeletionTimestampRace(t *testing.T) {
set := newStatefulSet(3)
// The bare client says it IS deleted.
set.DeletionTimestamp = new(metav1.Time)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, ssh := newFakeStatefulSetController(set)
// The lister (cache) says it's NOT deleted.
set2 := *set
@ -221,6 +221,16 @@ func TestStatefulSetControllerDeletionTimestampRace(t *testing.T) {
pod := newStatefulSetPod(set, 1)
pod.OwnerReferences = nil
spc.podsIndexer.Add(pod)
set.Status.CollisionCount = new(int32)
revision, err := newRevision(set, 1, set.Status.CollisionCount)
if err != nil {
t.Fatal(err)
}
revision.OwnerReferences = nil
revision, err = ssh.CreateControllerRevision(set, revision, set.Status.CollisionCount)
if err != nil {
t.Fatal(err)
}
// Force a sync. It should not try to create any Pods.
ssc.enqueueStatefulSet(set)
@ -237,10 +247,31 @@ func TestStatefulSetControllerDeletionTimestampRace(t *testing.T) {
if got, want := len(pods), 1; got != want {
t.Errorf("len(pods) = %v, want %v", got, want)
}
// It should not adopt pods.
for _, pod := range pods {
if len(pod.OwnerReferences) > 0 {
t.Errorf("unexpect pod owner references: %v", pod.OwnerReferences)
}
}
// It should not adopt revisions.
revisions, err := ssh.ListControllerRevisions(set, selector)
if err != nil {
t.Fatal(err)
}
if got, want := len(revisions), 1; got != want {
t.Errorf("len(revisions) = %v, want %v", got, want)
}
for _, revision := range revisions {
if len(revision.OwnerReferences) > 0 {
t.Errorf("unexpect revision owner references: %v", revision.OwnerReferences)
}
}
}
func TestStatefulSetControllerAddPod(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
pod1 := newStatefulSetPod(set1, 0)
@ -272,7 +303,7 @@ func TestStatefulSetControllerAddPod(t *testing.T) {
}
func TestStatefulSetControllerAddPodOrphan(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -293,7 +324,7 @@ func TestStatefulSetControllerAddPodOrphan(t *testing.T) {
}
func TestStatefulSetControllerAddPodNoSet(t *testing.T) {
ssc, _ := newFakeStatefulSetController()
ssc, _, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
pod := newStatefulSetPod(set, 0)
ssc.addPod(pod)
@ -305,7 +336,7 @@ func TestStatefulSetControllerAddPodNoSet(t *testing.T) {
}
func TestStatefulSetControllerUpdatePod(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -340,7 +371,7 @@ func TestStatefulSetControllerUpdatePod(t *testing.T) {
}
func TestStatefulSetControllerUpdatePodWithNoSet(t *testing.T) {
ssc, _ := newFakeStatefulSetController()
ssc, _, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
pod := newStatefulSetPod(set, 0)
prev := *pod
@ -354,7 +385,7 @@ func TestStatefulSetControllerUpdatePodWithNoSet(t *testing.T) {
}
func TestStatefulSetControllerUpdatePodWithSameVersion(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
pod := newStatefulSetPod(set, 0)
spc.setsIndexer.Add(set)
@ -367,7 +398,7 @@ func TestStatefulSetControllerUpdatePodWithSameVersion(t *testing.T) {
}
func TestStatefulSetControllerUpdatePodOrphanWithNewLabels(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
pod := newStatefulSetPod(set, 0)
pod.OwnerReferences = nil
@ -385,7 +416,7 @@ func TestStatefulSetControllerUpdatePodOrphanWithNewLabels(t *testing.T) {
}
func TestStatefulSetControllerUpdatePodChangeControllerRef(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -403,7 +434,7 @@ func TestStatefulSetControllerUpdatePodChangeControllerRef(t *testing.T) {
}
func TestStatefulSetControllerUpdatePodRelease(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -420,7 +451,7 @@ func TestStatefulSetControllerUpdatePodRelease(t *testing.T) {
}
func TestStatefulSetControllerDeletePod(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -451,7 +482,7 @@ func TestStatefulSetControllerDeletePod(t *testing.T) {
}
func TestStatefulSetControllerDeletePodOrphan(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -467,7 +498,7 @@ func TestStatefulSetControllerDeletePodOrphan(t *testing.T) {
}
func TestStatefulSetControllerDeletePodTombstone(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set := newStatefulSet(3)
pod := newStatefulSetPod(set, 0)
spc.setsIndexer.Add(set)
@ -485,7 +516,7 @@ func TestStatefulSetControllerDeletePodTombstone(t *testing.T) {
}
func TestStatefulSetControllerGetStatefulSetsForPod(t *testing.T) {
ssc, spc := newFakeStatefulSetController()
ssc, spc, _ := newFakeStatefulSetController()
set1 := newStatefulSet(3)
set2 := newStatefulSet(3)
set2.Name = "foo2"
@ -514,7 +545,7 @@ func TestGetPodsForStatefulSetAdopt(t *testing.T) {
pod4.OwnerReferences = nil
pod4.Name = "x" + pod4.Name
ssc, spc := newFakeStatefulSetController(set, pod1, pod2, pod3, pod4)
ssc, spc, _ := newFakeStatefulSetController(set, pod1, pod2, pod3, pod4)
spc.podsIndexer.Add(pod1)
spc.podsIndexer.Add(pod2)
@ -556,7 +587,7 @@ func TestAdoptOrphanRevisions(t *testing.T) {
ss1Rev2.Namespace = ss1.Namespace
ss1Rev2.OwnerReferences = []metav1.OwnerReference{}
ssc, spc := newFakeStatefulSetController(ss1, ss1Rev1, ss1Rev2)
ssc, spc, _ := newFakeStatefulSetController(ss1, ss1Rev1, ss1Rev2)
spc.revisionsIndexer.Add(ss1Rev1)
spc.revisionsIndexer.Add(ss1Rev2)
@ -583,7 +614,7 @@ func TestAdoptOrphanRevisions(t *testing.T) {
func TestGetPodsForStatefulSetRelease(t *testing.T) {
set := newStatefulSet(3)
ssc, spc := newFakeStatefulSetController(set)
ssc, spc, _ := newFakeStatefulSetController(set)
pod1 := newStatefulSetPod(set, 1)
// pod2 is owned but has wrong name.
pod2 := newStatefulSetPod(set, 2)
@ -619,7 +650,7 @@ func TestGetPodsForStatefulSetRelease(t *testing.T) {
}
}
func newFakeStatefulSetController(initialObjects ...runtime.Object) (*StatefulSetController, *fakeStatefulPodControl) {
func newFakeStatefulSetController(initialObjects ...runtime.Object) (*StatefulSetController, *fakeStatefulPodControl, history.Interface) {
client := fake.NewSimpleClientset(initialObjects...)
informerFactory := informers.NewSharedInformerFactory(client, controller.NoResyncPeriodFunc())
fpc := newFakeStatefulPodControl(informerFactory.Core().V1().Pods(), informerFactory.Apps().V1().StatefulSets(), informerFactory.Apps().V1().ControllerRevisions())
@ -637,7 +668,7 @@ func newFakeStatefulSetController(initialObjects ...runtime.Object) (*StatefulSe
recorder := record.NewFakeRecorder(10)
ssc.control = NewDefaultStatefulSetControl(fpc, ssu, ssh, recorder)
return ssc, fpc
return ssc, fpc, ssh
}
func fakeWorker(ssc *StatefulSetController) {