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statefulset PersistentVolumeClaimDeletePolicy api change

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This commit is contained in:
Matthew Cary 2021-03-01 15:21:34 -08:00
parent 0feba0c4ee
commit e4e735cd1c
10 changed files with 252 additions and 6 deletions
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11
pkg/apis/apps/fuzzer/fuzzer.go
View File

@ -40,6 +40,17 @@ var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
if len(s.Spec.UpdateStrategy.Type) == 0 {
s.Spec.UpdateStrategy.Type = apps.RollingUpdateStatefulSetStrategyType
}
if s.Spec.PersistentVolumeClaimRetentionPolicy == nil {
policies := []apps.PersistentVolumeClaimRetentionPolicyType{
apps.RetainPersistentVolumeClaimRetentionPolicyType,
apps.DeletePersistentVolumeClaimRetentionPolicyType,
}
choice := int32(c.Rand.Int31())
s.Spec.PersistentVolumeClaimRetentionPolicy = &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
WhenDeleted: policies[choice&1],
WhenScaled: policies[(choice>>1)&1],
}
}
if s.Spec.RevisionHistoryLimit == nil {
s.Spec.RevisionHistoryLimit = new(int32)
*s.Spec.RevisionHistoryLimit = 10

40
pkg/apis/apps/types.go
View File

@ -97,6 +97,40 @@ type RollingUpdateStatefulSetStrategy struct {
Partition int32
}
// PersistentVolumeClaimRetentionPolicyType is a string enumeration of the policies that will determine
// when volumes from the VolumeClaimTemplates will be deleted when the controlling StatefulSet is
// deleted or scaled down.
type PersistentVolumeClaimRetentionPolicyType string
const (
// RetainPersistentVolumeClaimRetentionPolicyType is the default
// PersistentVolumeClaimRetentionPolicy and specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will not be deleted.
RetainPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Retain"
// DeletePersistentVolumeClaimRetentionPolicyType specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will be deleted in the scenario specified in
// StatefulSetPersistentVolumeClaimPolicy.
DeletePersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Delete"
)
// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
// created from the StatefulSet VolumeClaimTemplates.
type StatefulSetPersistentVolumeClaimRetentionPolicy struct {
// WhenDeleted specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is deleted. The default policy
// of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
// `Delete` policy causes those PVCs to be deleted.
WhenDeleted PersistentVolumeClaimRetentionPolicyType
// WhenScaled specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is scaled down. The default
// policy of `Retain` causes PVCs to not be affected by a scaledown. The
// `Delete` policy causes the associated PVCs for any excess pods above
// the replica count to be deleted.
WhenScaled PersistentVolumeClaimRetentionPolicyType
}
// A StatefulSetSpec is the specification of a StatefulSet.
type StatefulSetSpec struct {
// Replicas is the desired number of replicas of the given Template.
@ -164,6 +198,12 @@ type StatefulSetSpec struct {
// This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
// +optional
MinReadySeconds int32
// PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from
// the StatefulSet VolumeClaimTemplates. This requires the
// StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.
// +optional
PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy
}
// StatefulSetStatus represents the current state of a StatefulSet.

14
pkg/apis/apps/v1/defaults.go
View File

@ -20,6 +20,8 @@ import (
appsv1 "k8s.io/api/apps/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/kubernetes/pkg/features"
)
func addDefaultingFuncs(scheme *runtime.Scheme) error {
@ -117,6 +119,18 @@ func SetDefaults_StatefulSet(obj *appsv1.StatefulSet) {
*obj.Spec.UpdateStrategy.RollingUpdate.Partition = 0
}
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetAutoDeletePVC) {
if obj.Spec.PersistentVolumeClaimRetentionPolicy == nil {
obj.Spec.PersistentVolumeClaimRetentionPolicy = &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{}
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted = appsv1.RetainPersistentVolumeClaimRetentionPolicyType
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled = appsv1.RetainPersistentVolumeClaimRetentionPolicyType
}
}
if obj.Spec.Replicas == nil {
obj.Spec.Replicas = new(int32)
*obj.Spec.Replicas = 1

15
pkg/apis/apps/v1beta1/defaults.go
View File

@ -21,6 +21,8 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/kubernetes/pkg/features"
)
func addDefaultingFuncs(scheme *runtime.Scheme) error {
@ -46,6 +48,19 @@ func SetDefaults_StatefulSet(obj *appsv1beta1.StatefulSet) {
obj.Labels = labels
}
}
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetAutoDeletePVC) {
if obj.Spec.PersistentVolumeClaimRetentionPolicy == nil {
obj.Spec.PersistentVolumeClaimRetentionPolicy = &appsv1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy{}
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted = appsv1beta1.RetainPersistentVolumeClaimRetentionPolicyType
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled = appsv1beta1.RetainPersistentVolumeClaimRetentionPolicyType
}
}
if obj.Spec.Replicas == nil {
obj.Spec.Replicas = new(int32)
*obj.Spec.Replicas = 1

14
pkg/apis/apps/v1beta2/defaults.go
View File

@ -20,6 +20,8 @@ import (
appsv1beta2 "k8s.io/api/apps/v1beta2"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/kubernetes/pkg/features"
)
func addDefaultingFuncs(scheme *runtime.Scheme) error {
@ -72,6 +74,18 @@ func SetDefaults_StatefulSet(obj *appsv1beta2.StatefulSet) {
*obj.Spec.UpdateStrategy.RollingUpdate.Partition = 0
}
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetAutoDeletePVC) {
if obj.Spec.PersistentVolumeClaimRetentionPolicy == nil {
obj.Spec.PersistentVolumeClaimRetentionPolicy = &appsv1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy{}
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted = appsv1beta2.RetainPersistentVolumeClaimRetentionPolicyType
}
if len(obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled) == 0 {
obj.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled = appsv1beta2.RetainPersistentVolumeClaimRetentionPolicyType
}
}
if obj.Spec.Replicas == nil {
obj.Spec.Replicas = new(int32)
*obj.Spec.Replicas = 1

34
pkg/apis/apps/validation/validation.go
View File

@ -69,6 +69,26 @@ func ValidatePodTemplateSpecForStatefulSet(template *api.PodTemplateSpec, select
return allErrs
}
func ValidatePersistentVolumeClaimRetentionPolicyType(policy apps.PersistentVolumeClaimRetentionPolicyType, fldPath *field.Path) field.ErrorList {
var allErrs field.ErrorList
switch policy {
case apps.RetainPersistentVolumeClaimRetentionPolicyType:
case apps.DeletePersistentVolumeClaimRetentionPolicyType:
default:
allErrs = append(allErrs, field.NotSupported(fldPath, policy, []string{string(apps.RetainPersistentVolumeClaimRetentionPolicyType), string(apps.DeletePersistentVolumeClaimRetentionPolicyType)}))
}
return allErrs
}
func ValidatePersistentVolumeClaimRetentionPolicy(policy *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, fldPath *field.Path) field.ErrorList {
var allErrs field.ErrorList
if policy != nil {
allErrs = append(allErrs, ValidatePersistentVolumeClaimRetentionPolicyType(policy.WhenDeleted, fldPath.Child("whenDeleted"))...)
allErrs = append(allErrs, ValidatePersistentVolumeClaimRetentionPolicyType(policy.WhenScaled, fldPath.Child("whenScaled"))...)
}
return allErrs
}
// ValidateStatefulSetSpec tests if required fields in the StatefulSet spec are set.
func ValidateStatefulSetSpec(spec *apps.StatefulSetSpec, fldPath *field.Path, opts apivalidation.PodValidationOptions) field.ErrorList {
allErrs := field.ErrorList{}
@ -108,6 +128,8 @@ func ValidateStatefulSetSpec(spec *apps.StatefulSetSpec, fldPath *field.Path, op
apps.OnDeleteStatefulSetStrategyType)))
}
allErrs = append(allErrs, ValidatePersistentVolumeClaimRetentionPolicy(spec.PersistentVolumeClaimRetentionPolicy, fldPath.Child("persistentVolumeClaimRetentionPolicy"))...)
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.Replicas), fldPath.Child("replicas"))...)
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetMinReadySeconds) {
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.MinReadySeconds), fldPath.Child("minReadySeconds"))...)
@ -152,18 +174,18 @@ func ValidateStatefulSetUpdate(statefulSet, oldStatefulSet *apps.StatefulSet) fi
// statefulset updates aren't super common and general updates are likely to be touching spec, so we'll do this
// deep copy right away. This avoids mutating our inputs
newStatefulSetClone := statefulSet.DeepCopy()
newStatefulSetClone.Spec.Replicas = oldStatefulSet.Spec.Replicas // +k8s:verify-mutation:reason=clone
newStatefulSetClone.Spec.Template = oldStatefulSet.Spec.Template // +k8s:verify-mutation:reason=clone
newStatefulSetClone.Spec.UpdateStrategy = oldStatefulSet.Spec.UpdateStrategy // +k8s:verify-mutation:reason=clone
newStatefulSetClone.Spec.Replicas = oldStatefulSet.Spec.Replicas // +k8s:verify-mutation:reason=clone
newStatefulSetClone.Spec.Template = oldStatefulSet.Spec.Template // +k8s:verify-mutation:reason=clone
newStatefulSetClone.Spec.UpdateStrategy = oldStatefulSet.Spec.UpdateStrategy // +k8s:verify-mutation:reason=clone
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetMinReadySeconds) {
newStatefulSetClone.Spec.MinReadySeconds = oldStatefulSet.Spec.MinReadySeconds // +k8s:verify-mutation:reason=clone
}
newStatefulSetClone.Spec.PersistentVolumeClaimRetentionPolicy = oldStatefulSet.Spec.PersistentVolumeClaimRetentionPolicy // +k8s:verify-mutation:reason=clone
if !apiequality.Semantic.DeepEqual(newStatefulSetClone.Spec, oldStatefulSet.Spec) {
if utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetMinReadySeconds) {
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to statefulset spec for fields other than 'replicas', 'template', 'minReadySeconds' and 'updateStrategy' are forbidden"))
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to statefulset spec for fields other than 'replicas', 'template', 'updateStrategy' and 'persistentVolumeClaimRetentionPolicy' are forbidden"))
} else {
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to statefulset spec for fields other than 'replicas', 'template' and 'updateStrategy' are forbidden"))
}
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to statefulset spec for fields other than 'replicas', 'template', 'updateStrategy', 'minReadySeconds' and 'persistentVolumeClaimRetentionPolicy' are forbidden"))
}
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(statefulSet.Spec.Replicas), field.NewPath("spec", "replicas"))...)

7
pkg/registry/apps/statefulset/strategy.go
View File

@ -88,6 +88,7 @@ func (statefulSetStrategy) PrepareForCreate(ctx context.Context, obj runtime.Obj
statefulSet.Status = apps.StatefulSetStatus{}
statefulSet.Generation = 1
dropStatefulSetDisabledFields(statefulSet, nil)
pod.DropDisabledTemplateFields(&statefulSet.Spec.Template, nil)
}
@ -122,6 +123,12 @@ func dropStatefulSetDisabledFields(newSS *apps.StatefulSet, oldSS *apps.Stateful
newSS.Spec.MinReadySeconds = int32(0)
}
}
if !utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetAutoDeletePVC) {
if oldStatefulSet == nil || oldStatefulSet.Spec.PersistentVolumeClaimRetentionPolicy == nil {
newStatefulSet.Spec.PersistentVolumeClaimRetentionPolicy = nil
}
}
}
// minReadySecondsFieldsInUse returns true if fields related to StatefulSet minReadySeconds are set and

43
staging/src/k8s.io/api/apps/v1/types.go
View File

@ -116,6 +116,40 @@ type RollingUpdateStatefulSetStrategy struct {
Partition *int32 `json:"partition,omitempty" protobuf:"varint,1,opt,name=partition"`
}
// PersistentVolumeClaimRetentionPolicyType is a string enumeration of the policies that will determine
// when volumes from the VolumeClaimTemplates will be deleted when the controlling StatefulSet is
// deleted or scaled down.
type PersistentVolumeClaimRetentionPolicyType string
const (
// RetainPersistentVolumeClaimRetentionPolicyType is the default
// PersistentVolumeClaimRetentionPolicy and specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will not be deleted.
RetainPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Retain"
// RetentionPersistentVolumeClaimRetentionPolicyType specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will be deleted in the scenario specified in
// StatefulSetPersistentVolumeClaimRetentionPolicy.
DeletePersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Delete"
)
// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
// created from the StatefulSet VolumeClaimTemplates.
type StatefulSetPersistentVolumeClaimRetentionPolicy struct {
// WhenDeleted specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is deleted. The default policy
// of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
// `Delete` policy causes those PVCs to be deleted.
WhenDeleted PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty" protobuf:"bytes,1,opt,name=whenDeleted,casttype=PersistentVolumeClaimRetentionPolicyType"`
// WhenScaled specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is scaled down. The default
// policy of `Retain` causes PVCs to not be affected by a scaledown. The
// `Delete` policy causes the associated PVCs for any excess pods above
// the replica count to be deleted.
WhenScaled PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty" protobuf:"bytes,2,opt,name=whenScaled,casttype=PersistentVolumeClaimRetentionPolicyType"`
}
// A StatefulSetSpec is the specification of a StatefulSet.
type StatefulSetSpec struct {
// replicas is the desired number of replicas of the given Template.
@ -182,6 +216,15 @@ type StatefulSetSpec struct {
// This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
// +optional
MinReadySeconds int32 `json:"minReadySeconds,omitempty" protobuf:"varint,9,opt,name=minReadySeconds"`
// persistentVolumeClaimRetentionPolicy describes the lifecycle of persistent
// volume claims created from volumeClaimTemplates. By default, all persistent
// volume claims are created as needed and retained until manually deleted. This
// policy allows the lifecycle to be altered, for example by deleting persistent
// volume claims when their stateful set is deleted, or when their pod is scaled
// down. This requires the StatefulSetAutoDeletePVC feature gate to be enabled,
// which is alpha. +optional
PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy `json:"persistentVolumeClaimRetentionPolicy,omitempty" protobuf:"bytes,9,opt,name=persistentVolumeClaimRetentionPolicy"`
}
// StatefulSetStatus represents the current state of a StatefulSet.

40
staging/src/k8s.io/api/apps/v1beta1/types.go
View File

@ -158,6 +158,40 @@ type RollingUpdateStatefulSetStrategy struct {
Partition *int32 `json:"partition,omitempty" protobuf:"varint,1,opt,name=partition"`
}
// PersistentVolumeClaimRetentionPolicyType is a string enumeration of the policies that will determine
// when volumes from the VolumeClaimTemplates will be deleted when the controlling StatefulSet is
// deleted or scaled down.
type PersistentVolumeClaimRetentionPolicyType string
const (
// RetainPersistentVolumeClaimRetentionPolicyType is the default
// PersistentVolumeClaimRetentionPolicy and specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will not be deleted.
RetainPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Retain"
// RetentionPersistentVolumeClaimRetentionPolicyType specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will be deleted in the scenario specified in
// StatefulSetPersistentVolumeClaimRetentionPolicy.
RetentionPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Delete"
)
// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
// created from the StatefulSet VolumeClaimTemplates.
type StatefulSetPersistentVolumeClaimRetentionPolicy struct {
// WhenDeleted specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is deleted. The default policy
// of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
// `Delete` policy causes those PVCs to be deleted.
WhenDeleted PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty" protobuf:"bytes,1,opt,name=whenDeleted,casttype=PersistentVolumeClaimRetentionPolicyType"`
// WhenScaled specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is scaled down. The default
// policy of `Retain` causes PVCs to not be affected by a scaledown. The
// `Delete` policy causes the associated PVCs for any excess pods above
// the replica count to be deleted.
WhenScaled PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty" protobuf:"bytes,2,opt,name=whenScaled,casttype=PersistentVolumeClaimRetentionPolicyType"`
}
// A StatefulSetSpec is the specification of a StatefulSet.
type StatefulSetSpec struct {
// replicas is the desired number of replicas of the given Template.
@ -225,6 +259,12 @@ type StatefulSetSpec struct {
// This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
// +optional
MinReadySeconds int32 `json:"minReadySeconds,omitempty" protobuf:"varint,9,opt,name=minReadySeconds"`
// PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from
// the StatefulSet VolumeClaimTemplates. This requires the
// StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.
// +optional
PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy `json:"persistentVolumeClaimRetentionPolicy,omitempty" protobuf:"bytes,10,opt,name=persistentVolumeClaimRetentionPolicy"`
}
// StatefulSetStatus represents the current state of a StatefulSet.

40
staging/src/k8s.io/api/apps/v1beta2/types.go
View File

@ -169,6 +169,40 @@ type RollingUpdateStatefulSetStrategy struct {
Partition *int32 `json:"partition,omitempty" protobuf:"varint,1,opt,name=partition"`
}
// PersistentVolumeClaimRetentionPolicyType is a string enumeration of the policies that will determine
// when volumes from the VolumeClaimTemplates will be deleted when the controlling StatefulSet is
// deleted or scaled down.
type PersistentVolumeClaimRetentionPolicyType string
const (
// RetainPersistentVolumeClaimRetentionPolicyType is the default
// PersistentVolumeClaimRetentionPolicy and specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will not be deleted.
RetainPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Retain"
// RetentionPersistentVolumeClaimRetentionPolicyType specifies that
// PersistentVolumeClaims associated with StatefulSet VolumeClaimTemplates
// will be deleted in the scenario specified in
// StatefulSetPersistentVolumeClaimRetentionPolicy.
RetentionPersistentVolumeClaimRetentionPolicyType PersistentVolumeClaimRetentionPolicyType = "Delete"
)
// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
// created from the StatefulSet VolumeClaimTemplates.
type StatefulSetPersistentVolumeClaimRetentionPolicy struct {
// WhenDeleted specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is deleted. The default policy
// of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
// `Delete` policy causes those PVCs to be deleted.
WhenDeleted PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty" protobuf:"bytes,1,opt,name=whenDeleted,casttype=PersistentVolumeClaimRetentionPolicyType"`
// WhenScaled specifies what happens to PVCs created from StatefulSet
// VolumeClaimTemplates when the StatefulSet is scaled down. The default
// policy of `Retain` causes PVCs to not be affected by a scaledown. The
// `Delete` policy causes the associated PVCs for any excess pods above
// the replica count to be deleted.
WhenScaled PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty" protobuf:"bytes,2,opt,name=whenScaled,casttype=PersistentVolumeClaimRetentionPolicyType"`
}
// A StatefulSetSpec is the specification of a StatefulSet.
type StatefulSetSpec struct {
// replicas is the desired number of replicas of the given Template.
@ -235,6 +269,12 @@ type StatefulSetSpec struct {
// This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
// +optional
MinReadySeconds int32 `json:"minReadySeconds,omitempty" protobuf:"varint,9,opt,name=minReadySeconds"`
// PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from
// the StatefulSet VolumeClaimTemplates. This requires the
// StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.
// +optional
PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy `json:"persistentVolumeClaimRetentionPolicy,omitempty" protobuf:"bytes,10,opt,name=persistentVolumeClaimRetentionPolicy"`
}
// StatefulSetStatus represents the current state of a StatefulSet.