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Merge pull request #109877 from yibozhuang/local-pv-prefilter-result

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scheduler volumebinding: leverage PreFilterResult for bound local PVs
This commit is contained in:
Kubernetes Prow Robot 2022-12-13 14:53:34 -08:00 committed by GitHub
commit c2b5457dfa
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8 changed files with 604 additions and 6 deletions
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64
pkg/scheduler/framework/plugins/volumebinding/binder.go
View File

@ -45,6 +45,7 @@ import (
v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/scheduler/framework/plugins/volumebinding/metrics"
"k8s.io/kubernetes/pkg/volume/util"
)
// ConflictReason is used for the special strings which explain why
@ -126,6 +127,8 @@ type InTreeToCSITranslator interface {
// 1. The scheduler takes a Pod off the scheduler queue and processes it serially:
// a. Invokes all pre-filter plugins for the pod. GetPodVolumes() is invoked
// here, pod volume information will be saved in current scheduling cycle state for later use.
// If pod has bound immediate PVCs, GetEligibleNodes() is invoked to potentially reduce
// down the list of eligible nodes based on the bound PV's NodeAffinity (if any).
// b. Invokes all filter plugins, parallelized across nodes. FindPodVolumes() is invoked here.
// c. Invokes all score plugins. Future/TBD
// d. Selects the best node for the Pod.
@ -148,6 +151,14 @@ type SchedulerVolumeBinder interface {
// and unbound with immediate binding (including prebound)
GetPodVolumes(pod *v1.Pod) (boundClaims, unboundClaimsDelayBinding, unboundClaimsImmediate []*v1.PersistentVolumeClaim, err error)
// GetEligibleNodes checks the existing bound claims of the pod to determine if the list of nodes can be
// potentially reduced down to a subset of eligible nodes based on the bound claims which then can be used
// in subsequent scheduling stages.
//
// If eligibleNodes is 'nil', then it indicates that such eligible node reduction cannot be made
// and all nodes should be considered.
GetEligibleNodes(boundClaims []*v1.PersistentVolumeClaim) (eligibleNodes sets.String)
// FindPodVolumes checks if all of a Pod's PVCs can be satisfied by the
// node and returns pod's volumes information.
//
@ -208,6 +219,8 @@ type volumeBinder struct {
csiStorageCapacityLister storagelisters.CSIStorageCapacityLister
}
var _ SchedulerVolumeBinder = &volumeBinder{}
// CapacityCheck contains additional parameters for NewVolumeBinder that
// are only needed when checking volume sizes against available storage
// capacity is desired.
@ -248,7 +261,7 @@ func NewVolumeBinder(
}
// FindPodVolumes finds the matching PVs for PVCs and nodes to provision PVs
// for the given pod and node. If the node does not fit, confilict reasons are
// for the given pod and node. If the node does not fit, conflict reasons are
// returned.
func (b *volumeBinder) FindPodVolumes(pod *v1.Pod, boundClaims, claimsToBind []*v1.PersistentVolumeClaim, node *v1.Node) (podVolumes *PodVolumes, reasons ConflictReasons, err error) {
podVolumes = &PodVolumes{}
@ -356,6 +369,55 @@ func (b *volumeBinder) FindPodVolumes(pod *v1.Pod, boundClaims, claimsToBind []*
return
}
// GetEligibleNodes checks the existing bound claims of the pod to determine if the list of nodes can be
// potentially reduced down to a subset of eligible nodes based on the bound claims which then can be used
// in subsequent scheduling stages.
//
// Returning 'nil' for eligibleNodes indicates that such eligible node reduction cannot be made and all nodes
// should be considered.
func (b *volumeBinder) GetEligibleNodes(boundClaims []*v1.PersistentVolumeClaim) (eligibleNodes sets.String) {
if len(boundClaims) == 0 {
return
}
var errs []error
for _, pvc := range boundClaims {
pvName := pvc.Spec.VolumeName
pv, err := b.pvCache.GetPV(pvName)
if err != nil {
errs = append(errs, err)
continue
}
// if the PersistentVolume is local and has node affinity matching specific node(s),
// add them to the eligible nodes
nodeNames := util.GetLocalPersistentVolumeNodeNames(pv)
if len(nodeNames) != 0 {
// on the first found list of eligible nodes for the local PersistentVolume,
// insert to the eligible node set.
if eligibleNodes == nil {
eligibleNodes = sets.NewString(nodeNames...)
} else {
// for subsequent finding of eligible nodes for the local PersistentVolume,
// take the intersection of the nodes with the existing eligible nodes
// for cases if PV1 has node affinity to node1 and PV2 has node affinity to node2,
// then the eligible node list should be empty.
eligibleNodes = eligibleNodes.Intersection(sets.NewString(nodeNames...))
}
}
}
if len(errs) > 0 {
klog.V(4).InfoS("GetEligibleNodes: one or more error occurred finding eligible nodes", "error", errs)
return nil
}
if eligibleNodes != nil {
klog.V(4).InfoS("GetEligibleNodes: reduced down eligible nodes", "nodes", eligibleNodes)
}
return
}
// AssumePodVolumes will take the matching PVs and PVCs to provision in pod's
// volume information for the chosen node, and:
// 1. Update the pvCache with the new prebound PV.

140
pkg/scheduler/framework/plugins/volumebinding/binder_test.go
View File

@ -20,6 +20,7 @@ import (
"context"
"fmt"
"os"
"reflect"
"sort"
"testing"
"time"
@ -31,6 +32,7 @@ import (
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/informers"
@ -58,6 +60,9 @@ var (
boundPVCNode1a = makeTestPVC("unbound-pvc", "1G", "", pvcBound, "pv-node1a", "1", &waitClass)
immediateUnboundPVC = makeTestPVC("immediate-unbound-pvc", "1G", "", pvcUnbound, "", "1", &immediateClass)
immediateBoundPVC = makeTestPVC("immediate-bound-pvc", "1G", "", pvcBound, "pv-bound-immediate", "1", &immediateClass)
localPreboundPVC1a = makeTestPVC("local-prebound-pvc-1a", "1G", "", pvcPrebound, "local-pv-node1a", "1", &waitClass)
localPreboundPVC1b = makeTestPVC("local-prebound-pvc-1b", "1G", "", pvcPrebound, "local-pv-node1b", "1", &waitClass)
localPreboundPVC2a = makeTestPVC("local-prebound-pvc-2a", "1G", "", pvcPrebound, "local-pv-node2a", "1", &waitClass)
// PVCs for dynamic provisioning
provisionedPVC = makeTestPVC("provisioned-pvc", "1Gi", "", pvcUnbound, "", "1", &waitClassWithProvisioner)
@ -89,6 +94,9 @@ var (
pvNode1bBoundHigherVersion = makeTestPV("pv-node1b", "node1", "10G", "2", unboundPVC2, waitClass)
pvBoundImmediate = makeTestPV("pv-bound-immediate", "node1", "1G", "1", immediateBoundPVC, immediateClass)
pvBoundImmediateNode2 = makeTestPV("pv-bound-immediate", "node2", "1G", "1", immediateBoundPVC, immediateClass)
localPVNode1a = makeLocalPV("local-pv-node1a", "node1", "5G", "1", nil, waitClass)
localPVNode1b = makeLocalPV("local-pv-node1b", "node1", "10G", "1", nil, waitClass)
localPVNode2a = makeLocalPV("local-pv-node2a", "node2", "5G", "1", nil, waitClass)
// PVs for CSI migration
migrationPVBound = makeTestPVForCSIMigration(zone1Labels, boundMigrationPVC, true)
@ -718,6 +726,12 @@ func makeTestPVForCSIMigration(labels map[string]string, pvc *v1.PersistentVolum
return pv
}
func makeLocalPV(name, node, capacity, version string, boundToPVC *v1.PersistentVolumeClaim, className string) *v1.PersistentVolume {
pv := makeTestPV(name, node, capacity, version, boundToPVC, className)
pv.Spec.NodeAffinity.Required.NodeSelectorTerms[0].MatchExpressions[0].Key = v1.LabelHostname
return pv
}
func pvcSetSelectedNode(pvc *v1.PersistentVolumeClaim, node string) *v1.PersistentVolumeClaim {
newPVC := pvc.DeepCopy()
metav1.SetMetaDataAnnotation(&newPVC.ObjectMeta, volume.AnnSelectedNode, node)
@ -2318,3 +2332,129 @@ func TestCapacity(t *testing.T) {
})
}
}
func TestGetEligibleNodes(t *testing.T) {
type scenarioType struct {
// Inputs
pvcs []*v1.PersistentVolumeClaim
pvs []*v1.PersistentVolume
nodes []*v1.Node
// Expected return values
eligibleNodes sets.String
}
scenarios := map[string]scenarioType{
"no-bound-claims": {},
"no-nodes-found": {
pvcs: []*v1.PersistentVolumeClaim{
preboundPVC,
preboundPVCNode1a,
},
},
"pv-not-found": {
pvcs: []*v1.PersistentVolumeClaim{
preboundPVC,
preboundPVCNode1a,
},
nodes: []*v1.Node{
node1,
},
},
"node-affinity-mismatch": {
pvcs: []*v1.PersistentVolumeClaim{
preboundPVC,
preboundPVCNode1a,
},
pvs: []*v1.PersistentVolume{
pvNode1a,
},
nodes: []*v1.Node{
node1,
node2,
},
},
"local-pv-with-node-affinity": {
pvcs: []*v1.PersistentVolumeClaim{
localPreboundPVC1a,
localPreboundPVC1b,
},
pvs: []*v1.PersistentVolume{
localPVNode1a,
localPVNode1b,
},
nodes: []*v1.Node{
node1,
node2,
},
eligibleNodes: sets.NewString("node1"),
},
"multi-local-pv-with-different-nodes": {
pvcs: []*v1.PersistentVolumeClaim{
localPreboundPVC1a,
localPreboundPVC1b,
localPreboundPVC2a,
},
pvs: []*v1.PersistentVolume{
localPVNode1a,
localPVNode1b,
localPVNode2a,
},
nodes: []*v1.Node{
node1,
node2,
},
eligibleNodes: sets.NewString(),
},
"local-and-non-local-pv": {
pvcs: []*v1.PersistentVolumeClaim{
localPreboundPVC1a,
localPreboundPVC1b,
preboundPVC,
immediateBoundPVC,
},
pvs: []*v1.PersistentVolume{
localPVNode1a,
localPVNode1b,
pvNode1a,
pvBoundImmediate,
pvBoundImmediateNode2,
},
nodes: []*v1.Node{
node1,
node2,
},
eligibleNodes: sets.NewString("node1"),
},
}
run := func(t *testing.T, scenario scenarioType) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Setup
testEnv := newTestBinder(t, ctx.Done())
testEnv.initVolumes(scenario.pvs, scenario.pvs)
testEnv.initNodes(scenario.nodes)
testEnv.initClaims(scenario.pvcs, scenario.pvcs)
// Execute
eligibleNodes := testEnv.binder.GetEligibleNodes(scenario.pvcs)
// Validate
if reflect.DeepEqual(scenario.eligibleNodes, eligibleNodes) {
fmt.Println("foo")
}
if compDiff := cmp.Diff(scenario.eligibleNodes, eligibleNodes, cmp.Comparer(func(a, b sets.String) bool {
return reflect.DeepEqual(a, b)
})); compDiff != "" {
t.Errorf("Unexpected eligible nodes (-want +got):\n%s", compDiff)
}
}
for name, scenario := range scenarios {
t.Run(name, func(t *testing.T) { run(t, scenario) })
}
}

8
pkg/scheduler/framework/plugins/volumebinding/fake_binder.go
View File

@ -20,6 +20,7 @@ import (
"context"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/sets"
)
// FakeVolumeBinderConfig holds configurations for fake volume binder.
@ -46,11 +47,18 @@ type FakeVolumeBinder struct {
BindCalled bool
}
var _ SchedulerVolumeBinder = &FakeVolumeBinder{}
// GetPodVolumes implements SchedulerVolumeBinder.GetPodVolumes.
func (b *FakeVolumeBinder) GetPodVolumes(pod *v1.Pod) (boundClaims, unboundClaimsDelayBinding, unboundClaimsImmediate []*v1.PersistentVolumeClaim, err error) {
return nil, nil, nil, nil
}
// GetEligibleNodes implements SchedulerVolumeBinder.GetEligibleNodes.
func (b *FakeVolumeBinder) GetEligibleNodes(boundClaims []*v1.PersistentVolumeClaim) (eligibleNodes sets.String) {
return nil
}
// FindPodVolumes implements SchedulerVolumeBinder.FindPodVolumes.
func (b *FakeVolumeBinder) FindPodVolumes(pod *v1.Pod, _, _ []*v1.PersistentVolumeClaim, node *v1.Node) (podVolumes *PodVolumes, reasons ConflictReasons, err error) {
return nil, b.config.FindReasons, b.config.FindErr

10
pkg/scheduler/framework/plugins/volumebinding/volume_binding.go
View File

@ -182,8 +182,16 @@ func (pl *VolumeBinding) PreFilter(ctx context.Context, state *framework.CycleSt
status.AppendReason("pod has unbound immediate PersistentVolumeClaims")
return nil, status
}
// Attempt to reduce down the number of nodes to consider in subsequent scheduling stages if pod has bound claims.
var result *framework.PreFilterResult
if eligibleNodes := pl.Binder.GetEligibleNodes(boundClaims); eligibleNodes != nil {
result = &framework.PreFilterResult{
NodeNames: eligibleNodes,
}
}
state.Write(stateKey, &stateData{boundClaims: boundClaims, claimsToBind: claimsToBind, podVolumesByNode: make(map[string]*PodVolumes)})
return nil, nil
return result, nil
}
// PreFilterExtensions returns prefilter extensions, pod add and remove.

42
pkg/scheduler/framework/plugins/volumebinding/volume_binding_test.go
View File

@ -27,6 +27,7 @@ import (
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
@ -79,6 +80,7 @@ func TestVolumeBinding(t *testing.T) {
pvs []*v1.PersistentVolume
fts feature.Features
args *config.VolumeBindingArgs
wantPreFilterResult *framework.PreFilterResult
wantPreFilterStatus *framework.Status
wantStateAfterPreFilter *stateData
wantFilterStatus []*framework.Status
@ -126,6 +128,42 @@ func TestVolumeBinding(t *testing.T) {
0,
},
},
{
name: "all bound with local volumes",
pod: makePod("pod-a").withPVCVolume("pvc-a", "volume-a").withPVCVolume("pvc-b", "volume-b").Pod,
nodes: []*v1.Node{
makeNode("node-a").Node,
},
pvcs: []*v1.PersistentVolumeClaim{
makePVC("pvc-a", waitSC.Name).withBoundPV("pv-a").PersistentVolumeClaim,
makePVC("pvc-b", waitSC.Name).withBoundPV("pv-b").PersistentVolumeClaim,
},
pvs: []*v1.PersistentVolume{
makePV("pv-a", waitSC.Name).withPhase(v1.VolumeBound).withNodeAffinity(map[string][]string{
v1.LabelHostname: {"node-a"},
}).PersistentVolume,
makePV("pv-b", waitSC.Name).withPhase(v1.VolumeBound).withNodeAffinity(map[string][]string{
v1.LabelHostname: {"node-a"},
}).PersistentVolume,
},
wantPreFilterResult: &framework.PreFilterResult{
NodeNames: sets.NewString("node-a"),
},
wantStateAfterPreFilter: &stateData{
boundClaims: []*v1.PersistentVolumeClaim{
makePVC("pvc-a", waitSC.Name).withBoundPV("pv-a").PersistentVolumeClaim,
makePVC("pvc-b", waitSC.Name).withBoundPV("pv-b").PersistentVolumeClaim,
},
claimsToBind: []*v1.PersistentVolumeClaim{},
podVolumesByNode: map[string]*PodVolumes{},
},
wantFilterStatus: []*framework.Status{
nil,
},
wantScores: []int64{
0,
},
},
{
name: "PVC does not exist",
pod: makePod("pod-a").withPVCVolume("pvc-a", "").Pod,
@ -654,8 +692,10 @@ func TestVolumeBinding(t *testing.T) {
state := framework.NewCycleState()
t.Logf("Verify: call PreFilter and check status")
_, gotPreFilterStatus := p.PreFilter(ctx, state, item.pod)
gotPreFilterResult, gotPreFilterStatus := p.PreFilter(ctx, state, item.pod)
assert.Equal(t, item.wantPreFilterStatus, gotPreFilterStatus)
assert.Equal(t, item.wantPreFilterResult, gotPreFilterResult)
if !gotPreFilterStatus.IsSuccess() {
// scheduler framework will skip Filter if PreFilter fails
return

38
pkg/volume/util/util.go
View File

@ -576,6 +576,44 @@ func IsLocalEphemeralVolume(volume v1.Volume) bool {
volume.ConfigMap != nil
}
// GetLocalPersistentVolumeNodeNames returns the node affinity node name(s) for
// local PersistentVolumes. nil is returned if the PV does not have any
// specific node affinity node selector terms and match expressions.
// PersistentVolume with node affinity has select and match expressions
// in the form of:
//
// nodeAffinity:
// required:
// nodeSelectorTerms:
// - matchExpressions:
// - key: kubernetes.io/hostname
// operator: In
// values:
// - <node1>
// - <node2>
func GetLocalPersistentVolumeNodeNames(pv *v1.PersistentVolume) []string {
if pv == nil || pv.Spec.NodeAffinity == nil || pv.Spec.NodeAffinity.Required == nil {
return nil
}
var result sets.Set[string]
for _, term := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms {
var nodes sets.Set[string]
for _, matchExpr := range term.MatchExpressions {
if matchExpr.Key == v1.LabelHostname && matchExpr.Operator == v1.NodeSelectorOpIn {
if nodes == nil {
nodes = sets.New(matchExpr.Values...)
} else {
nodes = nodes.Intersection(sets.New(matchExpr.Values...))
}
}
}
result = result.Union(nodes)
}
return sets.List(result)
}
// GetPodVolumeNames returns names of volumes that are used in a pod,
// either as filesystem mount or raw block device, together with list
// of all SELinux contexts of all containers that use the volumes.

302
pkg/volume/util/util_test.go
View File

@ -24,6 +24,7 @@ import (
"strings"
"testing"
"github.com/google/go-cmp/cmp"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@ -942,3 +943,304 @@ func TestGetPodVolumeNames(t *testing.T) {
})
}
}
func TestGetPersistentVolumeNodeNames(t *testing.T) {
tests := []struct {
name string
pv *v1.PersistentVolume
expectedNodeNames []string
}{
{
name: "nil PV",
pv: nil,
},
{
name: "PV missing node affinity",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
},
},
{
name: "PV node affinity missing required",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{},
},
},
},
{
name: "PV node affinity required zero selector terms",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{},
},
},
},
},
expectedNodeNames: []string{},
},
{
name: "PV node affinity required zero selector terms",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{},
},
},
},
},
expectedNodeNames: []string{},
},
{
name: "PV node affinity required zero match expressions",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{},
},
},
},
},
},
},
expectedNodeNames: []string{},
},
{
name: "PV node affinity required multiple match expressions",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "foo",
Operator: v1.NodeSelectorOpIn,
},
{
Key: "bar",
Operator: v1.NodeSelectorOpIn,
},
},
},
},
},
},
},
},
expectedNodeNames: []string{},
},
{
name: "PV node affinity required single match expression with no values",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{},
},
},
},
},
},
},
},
},
expectedNodeNames: []string{},
},
{
name: "PV node affinity required single match expression with single node",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node1",
},
},
},
},
},
},
},
},
},
expectedNodeNames: []string{
"node1",
},
},
{
name: "PV node affinity required single match expression with multiple nodes",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node1",
"node2",
},
},
},
},
},
},
},
},
},
expectedNodeNames: []string{
"node1",
"node2",
},
},
{
name: "PV node affinity required multiple match expressions with multiple nodes",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "bar",
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node1",
"node2",
},
},
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node3",
"node4",
},
},
},
},
},
},
},
},
},
expectedNodeNames: []string{
"node3",
"node4",
},
},
{
name: "PV node affinity required multiple node selectors multiple match expressions with multiple nodes",
pv: &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Spec: v1.PersistentVolumeSpec{
NodeAffinity: &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node1",
"node2",
},
},
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node2",
"node3",
},
},
},
},
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: v1.LabelHostname,
Operator: v1.NodeSelectorOpIn,
Values: []string{
"node1",
},
},
},
},
},
},
},
},
},
expectedNodeNames: []string{
"node1",
"node2",
},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
nodeNames := GetLocalPersistentVolumeNodeNames(test.pv)
if diff := cmp.Diff(test.expectedNodeNames, nodeNames); diff != "" {
t.Errorf("Unexpected nodeNames (-want, +got):\n%s", diff)
}
})
}
}

6
test/integration/volumescheduling/volume_binding_test.go
View File

@ -675,7 +675,7 @@ func TestPVAffinityConflict(t *testing.T) {
if _, err := config.client.CoreV1().Pods(config.ns).Create(context.TODO(), pod, metav1.CreateOptions{}); err != nil {
t.Fatalf("Failed to create Pod %q: %v", pod.Name, err)
}
// Give time to shceduler to attempt to schedule pod
// Give time to scheduler to attempt to schedule pod
if err := waitForPodUnschedulable(config.client, pod); err != nil {
t.Errorf("Failed as Pod %s was not unschedulable: %v", pod.Name, err)
}
@ -690,8 +690,8 @@ func TestPVAffinityConflict(t *testing.T) {
if strings.Compare(p.Status.Conditions[0].Reason, "Unschedulable") != 0 {
t.Fatalf("Failed as Pod %s reason was: %s but expected: Unschedulable", podName, p.Status.Conditions[0].Reason)
}
if !strings.Contains(p.Status.Conditions[0].Message, "node(s) didn't match Pod's node affinity") || !strings.Contains(p.Status.Conditions[0].Message, "node(s) had volume node affinity conflict") {
t.Fatalf("Failed as Pod's %s failure message does not contain expected message: node(s) didn't match Pod's node affinity, node(s) had volume node affinity conflict. Got message %q", podName, p.Status.Conditions[0].Message)
if !strings.Contains(p.Status.Conditions[0].Message, "node(s) didn't match Pod's node affinity") {
t.Fatalf("Failed as Pod's %s failure message does not contain expected message: node(s) didn't match Pod's node affinity. Got message %q", podName, p.Status.Conditions[0].Message)
}
// Deleting test pod
if err := config.client.CoreV1().Pods(config.ns).Delete(context.TODO(), podName, metav1.DeleteOptions{}); err != nil {