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Support burst in stateful set scale up and down

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The alpha field podManagementPolicy defines how pods are created,
deleted, and replaced. The new `Parallel` policy will replace pods
as fast as possible, not waiting for the pod to be `Ready` or providing
an order. This allows for advanced clustered software to take advantage
of rapid changes in scale.
This commit is contained in:
Clayton Coleman
2017-04-25 00:39:32 -04:00
parent 95ce463e95
commit 2861ae5eb9
30 changed files with 889 additions and 416 deletions
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133
pkg/apis/apps/validation/validation_test.go
View File

@@ -55,15 +55,17 @@ func TestValidateStatefulSet(t *testing.T) {
{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
{
ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
}
@@ -77,41 +79,47 @@ func TestValidateStatefulSet(t *testing.T) {
"zero-length ID": {
ObjectMeta: metav1.ObjectMeta{Name: "", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
"missing-namespace": {
ObjectMeta: metav1.ObjectMeta{Name: "abc-123"},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
"empty selector": {
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Template: validPodTemplate.Template,
},
},
"selector_doesnt_match": {
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"foo": "bar"}},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"foo": "bar"}},
Template: validPodTemplate.Template,
},
},
"invalid manifest": {
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
},
},
"negative_replicas": {
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: -1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: -1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
},
},
"invalid_label": {
@@ -123,8 +131,9 @@ func TestValidateStatefulSet(t *testing.T) {
},
},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
"invalid_label 2": {
@@ -136,7 +145,8 @@ func TestValidateStatefulSet(t *testing.T) {
},
},
Spec: apps.StatefulSetSpec{
Template: invalidPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Template: invalidPodTemplate.Template,
},
},
"invalid_annotation": {
@@ -148,8 +158,9 @@ func TestValidateStatefulSet(t *testing.T) {
},
},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
"invalid restart policy 1": {
@@ -158,7 +169,8 @@ func TestValidateStatefulSet(t *testing.T) {
Namespace: metav1.NamespaceDefault,
},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: api.PodTemplateSpec{
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyOnFailure,
@@ -177,7 +189,8 @@ func TestValidateStatefulSet(t *testing.T) {
Namespace: metav1.NamespaceDefault,
},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: api.PodTemplateSpec{
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyNever,
@@ -263,16 +276,18 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
old: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: 3,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: 3,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
},
@@ -296,9 +311,45 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: 2,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: 2,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: readWriteVolumePodTemplate.Template,
},
},
},
"empty pod creation policy": {
old: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: readWriteVolumePodTemplate.Template,
Template: validPodTemplate.Template,
},
},
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: 3,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
},
"invalid pod creation policy": {
old: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
PodManagementPolicy: apps.PodManagementPolicyType("Other"),
Replicas: 3,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
},
@@ -313,9 +364,10 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: 1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: readWriteVolumePodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: 1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: readWriteVolumePodTemplate.Template,
},
},
},
@@ -330,9 +382,10 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: 2,
Selector: &metav1.LabelSelector{MatchLabels: invalidLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: 2,
Selector: &metav1.LabelSelector{MatchLabels: invalidLabels},
Template: validPodTemplate.Template,
},
},
},
@@ -340,8 +393,9 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
old: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
update: apps.StatefulSet{
@@ -364,9 +418,10 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
update: apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
Replicas: -1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
PodManagementPolicy: apps.OrderedReadyPodManagement,
Replicas: -1,
Selector: &metav1.LabelSelector{MatchLabels: validLabels},
Template: validPodTemplate.Template,
},
},
},