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Merge pull request #105885 from gnufied/move-configurable-fsgroup-ga

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Move configurable fsgroup to GA
This commit is contained in:
Kubernetes Prow Robot 2021-11-10 13:53:27 -08:00 committed by GitHub
commit dcf0a031e9
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6 changed files with 3 additions and 91 deletions
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23
pkg/api/pod/util.go
View File

@ -571,8 +571,6 @@ func dropDisabledFields(
})
}
dropDisabledFSGroupFields(podSpec, oldPodSpec)
if !utilfeature.DefaultFeatureGate.Enabled(features.PodOverhead) && !overheadInUse(oldPodSpec) {
// Set Overhead to nil only if the feature is disabled and it is not used
podSpec.Overhead = nil
@ -623,16 +621,6 @@ func dropDisabledProcMountField(podSpec, oldPodSpec *api.PodSpec) {
}
}
func dropDisabledFSGroupFields(podSpec, oldPodSpec *api.PodSpec) {
if !utilfeature.DefaultFeatureGate.Enabled(features.ConfigurableFSGroupPolicy) && !fsGroupPolicyInUse(oldPodSpec) {
// if oldPodSpec had no FSGroupChangePolicy set then we should prevent new pod from having this field
// if ConfigurableFSGroupPolicy feature is disabled
if podSpec.SecurityContext != nil {
podSpec.SecurityContext.FSGroupChangePolicy = nil
}
}
}
// dropDisabledCSIVolumeSourceAlphaFields removes disabled alpha fields from []CSIVolumeSource.
// This should be called from PrepareForCreate/PrepareForUpdate for all pod specs resources containing a CSIVolumeSource
func dropDisabledCSIVolumeSourceAlphaFields(podSpec, oldPodSpec *api.PodSpec) {
@ -710,17 +698,6 @@ func ephemeralContainersInUse(podSpec *api.PodSpec) bool {
return len(podSpec.EphemeralContainers) > 0
}
func fsGroupPolicyInUse(podSpec *api.PodSpec) bool {
if podSpec == nil {
return false
}
securityContext := podSpec.SecurityContext
if securityContext != nil && securityContext.FSGroupChangePolicy != nil {
return true
}
return false
}
// overheadInUse returns true if the pod spec is non-nil and has Overhead set
func overheadInUse(podSpec *api.PodSpec) bool {
if podSpec == nil {

33
pkg/api/pod/util_test.go
View File

@ -562,56 +562,24 @@ func TestDropFSGroupFields(t *testing.T) {
}
podInfos := []struct {
description string
featureEnabled bool
newPodHasFSGroupChangePolicy bool
pod func() *api.Pod
expectPolicyInPod bool
}{
{
description: "oldPod.FSGroupChangePolicy=nil, feature=true, newPod.FSGroupChangePolicy=true",
featureEnabled: true,
pod: nofsGroupPod,
newPodHasFSGroupChangePolicy: true,
expectPolicyInPod: true,
},
{
description: "oldPod=nil, feature=false, newPod.FSGroupChangePolicy=true",
featureEnabled: false,
pod: func() *api.Pod { return nil },
newPodHasFSGroupChangePolicy: true,
expectPolicyInPod: false,
},
{
description: "oldPod=nil, feature=true, newPod.FSGroupChangePolicy=true",
featureEnabled: true,
pod: func() *api.Pod { return nil },
newPodHasFSGroupChangePolicy: true,
expectPolicyInPod: true,
},
{
description: "oldPod.FSGroupChangePolicy=nil, feature=false, newPod.FSGroupChangePolicy=true",
featureEnabled: false,
pod: nofsGroupPod,
newPodHasFSGroupChangePolicy: true,
expectPolicyInPod: false,
},
{
description: "oldPod.FSGroupChangePolicy=true, feature=false, newPod.FSGroupChangePolicy=true",
featureEnabled: false,
pod: fsGroupPod,
newPodHasFSGroupChangePolicy: true,
expectPolicyInPod: true,
},
{
description: "oldPod.FSGroupChangePolicy=true, feature=false, newPod.FSGroupChangePolicy=false",
featureEnabled: false,
pod: fsGroupPod,
newPodHasFSGroupChangePolicy: false,
expectPolicyInPod: false,
},
{
description: "oldPod.FSGroupChangePolicy=true, feature=true, newPod.FSGroupChangePolicy=false",
featureEnabled: true,
pod: fsGroupPod,
newPodHasFSGroupChangePolicy: false,
expectPolicyInPod: false,
@ -619,7 +587,6 @@ func TestDropFSGroupFields(t *testing.T) {
}
for _, podInfo := range podInfos {
t.Run(podInfo.description, func(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ConfigurableFSGroupPolicy, podInfo.featureEnabled)()
oldPod := podInfo.pod()
newPod := oldPod.DeepCopy()
if oldPod == nil && podInfo.newPodHasFSGroupChangePolicy {

3
pkg/features/kube_features.go
View File

@ -341,6 +341,7 @@ const (
// owner: @gnufied
// alpha: v1.18
// beta: v1.20
// GA: v1.23
// Allows user to configure volume permission change policy for fsGroups when mounting
// a volume in a Pod.
ConfigurableFSGroupPolicy featuregate.Feature = "ConfigurableFSGroupPolicy"
@ -841,7 +842,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
InTreePluginvSphereUnregister: {Default: false, PreRelease: featuregate.Alpha},
CSIMigrationOpenStack: {Default: true, PreRelease: featuregate.Beta},
InTreePluginOpenStackUnregister: {Default: false, PreRelease: featuregate.Alpha},
ConfigurableFSGroupPolicy: {Default: true, PreRelease: featuregate.Beta},
ConfigurableFSGroupPolicy: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.25
CSIInlineVolume: {Default: true, PreRelease: featuregate.Beta},
CSIStorageCapacity: {Default: true, PreRelease: featuregate.Beta},
CSIServiceAccountToken: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.23

2
pkg/volume/util/metrics.go
View File

@ -110,7 +110,7 @@ func OperationCompleteHook(plugin, operationName string) func(types.CompleteFunc
// FSGroupCompleteHook returns a hook to call when volume recursive permission is changed
func FSGroupCompleteHook(plugin volume.VolumePlugin, spec *volume.Spec) func(types.CompleteFuncParam) {
return OperationCompleteHook(GetFullQualifiedPluginNameForVolume(plugin.GetPluginName(), spec), "volume_fsgroup_recursive_apply")
return OperationCompleteHook(GetFullQualifiedPluginNameForVolume(plugin.GetPluginName(), spec), "volume_apply_access_control")
}
// GetFullQualifiedPluginNameForVolume returns full qualified plugin name for

25
pkg/volume/volume_linux.go
View File

@ -27,9 +27,7 @@ import (
"time"
v1 "k8s.io/api/core/v1"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/volume/util/types"
)
@ -47,25 +45,11 @@ func SetVolumeOwnership(mounter Mounter, fsGroup *int64, fsGroupChangePolicy *v1
return nil
}
fsGroupPolicyEnabled := utilfeature.DefaultFeatureGate.Enabled(features.ConfigurableFSGroupPolicy)
timer := time.AfterFunc(30*time.Second, func() {
klog.Warningf("Setting volume ownership for %s and fsGroup set. If the volume has a lot of files then setting volume ownership could be slow, see https://github.com/kubernetes/kubernetes/issues/69699", mounter.GetPath())
})
defer timer.Stop()
// This code exists for legacy purposes, so as old behaviour is entirely preserved when feature gate is disabled
// TODO: remove this when ConfigurableFSGroupPolicy turns GA.
if !fsGroupPolicyEnabled {
err := legacyOwnershipChange(mounter, fsGroup)
if completeFunc != nil {
completeFunc(types.CompleteFuncParam{
Err: &err,
})
}
return err
}
if skipPermissionChange(mounter, fsGroup, fsGroupChangePolicy) {
klog.V(3).InfoS("Skipping permission and ownership change for volume", "path", mounter.GetPath())
return nil
@ -85,15 +69,6 @@ func SetVolumeOwnership(mounter Mounter, fsGroup *int64, fsGroupChangePolicy *v1
return err
}
func legacyOwnershipChange(mounter Mounter, fsGroup *int64) error {
return filepath.Walk(mounter.GetPath(), func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
return changeFilePermission(path, fsGroup, mounter.GetAttributes().ReadOnly, info)
})
}
func changeFilePermission(filename string, fsGroup *int64, readonly bool, info os.FileInfo) error {
err := os.Lchown(filename, -1, int(*fsGroup))
if err != nil {

8
pkg/volume/volume_linux_test.go
View File

@ -27,10 +27,7 @@ import (
"testing"
v1 "k8s.io/api/core/v1"
utilfeature "k8s.io/apiserver/pkg/util/feature"
utiltesting "k8s.io/client-go/util/testing"
featuregatetesting "k8s.io/component-base/featuregate/testing"
"k8s.io/kubernetes/pkg/features"
)
type localFakeMounter struct {
@ -192,12 +189,10 @@ func TestSetVolumeOwnershipMode(t *testing.T) {
fsGroupChangePolicy *v1.PodFSGroupChangePolicy
setupFunc func(path string) error
assertFunc func(path string) error
featureGate bool
}{
{
description: "featuregate=on, fsgroupchangepolicy=always",
fsGroupChangePolicy: &always,
featureGate: true,
setupFunc: func(path string) error {
info, err := os.Lstat(path)
if err != nil {
@ -230,7 +225,6 @@ func TestSetVolumeOwnershipMode(t *testing.T) {
{
description: "featuregate=on, fsgroupchangepolicy=onrootmismatch,rootdir=validperm",
fsGroupChangePolicy: &onrootMismatch,
featureGate: true,
setupFunc: func(path string) error {
info, err := os.Lstat(path)
if err != nil {
@ -262,7 +256,6 @@ func TestSetVolumeOwnershipMode(t *testing.T) {
{
description: "featuregate=on, fsgroupchangepolicy=onrootmismatch,rootdir=invalidperm",
fsGroupChangePolicy: &onrootMismatch,
featureGate: true,
setupFunc: func(path string) error {
// change mode of root folder to be right
err := os.Chmod(path, 0770)
@ -291,7 +284,6 @@ func TestSetVolumeOwnershipMode(t *testing.T) {
for _, test := range tests {
t.Run(test.description, func(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ConfigurableFSGroupPolicy, test.featureGate)()
tmpDir, err := utiltesting.MkTmpdir("volume_linux_ownership")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)