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Add storage isolation API

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This PR adds the new APIs to support storage capacity isolation as described in the proposal
https://github.com/kubernetes/community/pull/306

1. Add SizeLimit for emptyDir volume
2. Add scratch and overlay storage type used by container level or
node level
This commit is contained in:
Jing Xu
2017-05-25 13:53:40 -07:00
parent 052cd6d30b
commit 85f030c2aa
5 changed files with 100 additions and 1 deletions
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56
pkg/api/validation/validation_test.go
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@@ -2281,6 +2281,62 @@ func TestValidateVolumes(t *testing.T) {
}
}
func TestAlphaLocalStorageCapacityIsolation(t *testing.T) {
testCases := []api.VolumeSource{
{EmptyDir: &api.EmptyDirVolumeSource{SizeLimit: *resource.NewQuantity(int64(5), resource.BinarySI)}},
}
// Enable alpha feature LocalStorageCapacityIsolation
err := utilfeature.DefaultFeatureGate.Set("LocalStorageCapacityIsolation=true")
if err != nil {
t.Errorf("Failed to enable feature gate for LocalStorageCapacityIsolation: %v", err)
return
}
for _, tc := range testCases {
if errs := validateVolumeSource(&tc, field.NewPath("spec")); len(errs) != 0 {
t.Errorf("expected success: %v", errs)
}
}
// Disable alpha feature LocalStorageCapacityIsolation
err = utilfeature.DefaultFeatureGate.Set("LocalStorageCapacityIsolation=false")
if err != nil {
t.Errorf("Failed to disable feature gate for LocalStorageCapacityIsolation: %v", err)
return
}
for _, tc := range testCases {
if errs := validateVolumeSource(&tc, field.NewPath("spec")); len(errs) == 0 {
t.Errorf("expected failure: %v", errs)
}
}
containerLimitCase := api.ResourceRequirements{
Limits: api.ResourceList{
api.ResourceStorageOverlay: *resource.NewMilliQuantity(
int64(40000),
resource.BinarySI),
},
}
// Enable alpha feature LocalStorageCapacityIsolation
err = utilfeature.DefaultFeatureGate.Set("LocalStorageCapacityIsolation=true")
if err != nil {
t.Errorf("Failed to enable feature gate for LocalStorageCapacityIsolation: %v", err)
return
}
if errs := ValidateResourceRequirements(&containerLimitCase, field.NewPath("resources")); len(errs) != 0 {
t.Errorf("expected success: %v", errs)
}
// Disable alpha feature LocalStorageCapacityIsolation
err = utilfeature.DefaultFeatureGate.Set("LocalStorageCapacityIsolation=false")
if err != nil {
t.Errorf("Failed to disable feature gate for LocalStorageCapacityIsolation: %v", err)
return
}
if errs := ValidateResourceRequirements(&containerLimitCase, field.NewPath("resources")); len(errs) == 0 {
t.Errorf("expected failure: %v", errs)
}
}
func TestValidatePorts(t *testing.T) {
successCase := []api.ContainerPort{
{Name: "abc", ContainerPort: 80, HostPort: 80, Protocol: "TCP"},