Merge pull request #56661 from xiangpengzhao/move-kubelet-constants

Automatic merge from submit-queue (batch tested with PRs 56410, 56707, 56661, 54998, 56722). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Move some kubelet constants to a common place

**What this PR does / why we need it**:
More context, see: https://github.com/kubernetes/kubernetes/issues/56516
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #56516
[thanks @ixdy for verifying this!]

**Special notes for your reviewer**:
@ixdy how can I verify #56516 against this locally?

/cc @ixdy @mtaufen 

**Release note**:

```release-note
NONE
```

pkg/kubelet/apis/kubeletconfig/validation/BUILD

@@ -12,7 +12,7 @@ go_library(
     importpath = "k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig/validation",
     deps = [
         "//pkg/kubelet/apis/kubeletconfig:go_default_library",
-        "//pkg/kubelet/cm:go_default_library",
+        "//pkg/kubelet/types:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/errors:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/validation:go_default_library",
     ],

pkg/kubelet/apis/kubeletconfig/validation/validation.go

@@ -22,7 +22,7 @@ import (
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	utilvalidation "k8s.io/apimachinery/pkg/util/validation"
 	"k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig"
-	containermanager "k8s.io/kubernetes/pkg/kubelet/cm"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 )
 
 // ValidateKubeletConfiguration validates `kc` and returns an error if it is invalid
@@ -91,13 +91,13 @@ func ValidateKubeletConfiguration(kc *kubeletconfig.KubeletConfiguration) error
 	}
 	for _, val := range kc.EnforceNodeAllocatable {
 		switch val {
-		case containermanager.NodeAllocatableEnforcementKey:
-		case containermanager.SystemReservedEnforcementKey:
-		case containermanager.KubeReservedEnforcementKey:
+		case kubetypes.NodeAllocatableEnforcementKey:
+		case kubetypes.SystemReservedEnforcementKey:
+		case kubetypes.KubeReservedEnforcementKey:
 			continue
 		default:
 			allErrors = append(allErrors, fmt.Errorf("Invalid option %q specified for EnforceNodeAllocatable (--enforce-node-allocatable) setting. Valid options are %q, %q or %q",
-				val, containermanager.NodeAllocatableEnforcementKey, containermanager.SystemReservedEnforcementKey, containermanager.KubeReservedEnforcementKey))
+				val, kubetypes.NodeAllocatableEnforcementKey, kubetypes.SystemReservedEnforcementKey, kubetypes.KubeReservedEnforcementKey))
 		}
 	}
 	return utilerrors.NewAggregate(allErrors)

pkg/kubelet/cm/BUILD

@@ -57,6 +57,7 @@ go_library(
             "//pkg/kubelet/events:go_default_library",
             "//pkg/kubelet/metrics:go_default_library",
             "//pkg/kubelet/qos:go_default_library",
+            "//pkg/kubelet/types:go_default_library",
             "//pkg/util/file:go_default_library",
             "//pkg/util/oom:go_default_library",
             "//pkg/util/procfs:go_default_library",

pkg/kubelet/cm/container_manager.go

@@ -122,13 +122,6 @@ type Status struct {
 	SoftRequirements error
 }
 
-const (
-	// Uer visible keys for managing node allocatable enforcement on the node.
-	NodeAllocatableEnforcementKey = "pods"
-	SystemReservedEnforcementKey  = "system-reserved"
-	KubeReservedEnforcementKey    = "kube-reserved"
-)
-
 // containerManager for the kubelet is currently an injected dependency.
 // We need to parse the --qos-reserve-requests option in
 // cmd/kubelet/app/server.go and there isn't really a good place to put

pkg/kubelet/cm/node_container_manager.go

@@ -32,6 +32,7 @@ import (
 	kubefeatures "k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/kubelet/events"
 	evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 )
 
 const (
@@ -62,7 +63,7 @@ func (cm *containerManagerImpl) enforceNodeAllocatableCgroups() error {
 	// default cpu shares on cgroups are low and can cause cpu starvation.
 	nodeAllocatable := cm.capacity
 	// Use Node Allocatable limits instead of capacity if the user requested enforcing node allocatable.
-	if cm.CgroupsPerQOS && nc.EnforceNodeAllocatable.Has(NodeAllocatableEnforcementKey) {
+	if cm.CgroupsPerQOS && nc.EnforceNodeAllocatable.Has(kubetypes.NodeAllocatableEnforcementKey) {
 		nodeAllocatable = cm.getNodeAllocatableAbsolute()
 	}
 
@@ -101,7 +102,7 @@ func (cm *containerManagerImpl) enforceNodeAllocatableCgroups() error {
 		}()
 	}
 	// Now apply kube reserved and system reserved limits if required.
-	if nc.EnforceNodeAllocatable.Has(SystemReservedEnforcementKey) {
+	if nc.EnforceNodeAllocatable.Has(kubetypes.SystemReservedEnforcementKey) {
 		glog.V(2).Infof("Enforcing System reserved on cgroup %q with limits: %+v", nc.SystemReservedCgroupName, nc.SystemReserved)
 		if err := enforceExistingCgroup(cm.cgroupManager, nc.SystemReservedCgroupName, nc.SystemReserved); err != nil {
 			message := fmt.Sprintf("Failed to enforce System Reserved Cgroup Limits on %q: %v", nc.SystemReservedCgroupName, err)
@@ -110,7 +111,7 @@ func (cm *containerManagerImpl) enforceNodeAllocatableCgroups() error {
 		}
 		cm.recorder.Eventf(nodeRef, v1.EventTypeNormal, events.SuccessfulNodeAllocatableEnforcement, "Updated limits on system reserved cgroup %v", nc.SystemReservedCgroupName)
 	}
-	if nc.EnforceNodeAllocatable.Has(KubeReservedEnforcementKey) {
+	if nc.EnforceNodeAllocatable.Has(kubetypes.KubeReservedEnforcementKey) {
 		glog.V(2).Infof("Enforcing kube reserved on cgroup %q with limits: %+v", nc.KubeReservedCgroupName, nc.KubeReserved)
 		if err := enforceExistingCgroup(cm.cgroupManager, nc.KubeReservedCgroupName, nc.KubeReserved); err != nil {
 			message := fmt.Sprintf("Failed to enforce Kube Reserved Cgroup Limits on %q: %v", nc.KubeReservedCgroupName, err)

pkg/kubelet/eviction/BUILD

@@ -18,7 +18,6 @@ go_test(
         "//pkg/apis/core:go_default_library",
         "//pkg/features:go_default_library",
         "//pkg/kubelet/apis/stats/v1alpha1:go_default_library",
-        "//pkg/kubelet/cm:go_default_library",
         "//pkg/kubelet/eviction/api:go_default_library",
         "//pkg/kubelet/lifecycle:go_default_library",
         "//pkg/kubelet/types:go_default_library",

pkg/kubelet/eviction/helpers.go

@@ -29,9 +29,9 @@ import (
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/kubernetes/pkg/features"
 	statsapi "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
-	"k8s.io/kubernetes/pkg/kubelet/cm"
 	evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
 	"k8s.io/kubernetes/pkg/kubelet/server/stats"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	schedulerutils "k8s.io/kubernetes/plugin/pkg/scheduler/util"
 )
 
@@ -198,7 +198,7 @@ func parseThresholdStatement(signal evictionapi.Signal, val string) (evictionapi
 // getAllocatableThreshold returns the thresholds applicable for the allocatable configuration
 func getAllocatableThreshold(allocatableConfig []string) []evictionapi.Threshold {
 	for _, key := range allocatableConfig {
-		if key == cm.NodeAllocatableEnforcementKey {
+		if key == kubetypes.NodeAllocatableEnforcementKey {
 			return []evictionapi.Threshold{
 				{
 					Signal:   evictionapi.SignalAllocatableMemoryAvailable,

pkg/kubelet/eviction/helpers_test.go

@@ -30,8 +30,8 @@ import (
 	api "k8s.io/kubernetes/pkg/apis/core"
 	"k8s.io/kubernetes/pkg/features"
 	statsapi "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
-	"k8s.io/kubernetes/pkg/kubelet/cm"
 	evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	"k8s.io/kubernetes/pkg/quota"
 )
 
@@ -61,7 +61,7 @@ func TestParseThresholdConfig(t *testing.T) {
 			expectThresholds:        []evictionapi.Threshold{},
 		},
 		"all memory eviction values": {
-			allocatableConfig:       []string{cm.NodeAllocatableEnforcementKey},
+			allocatableConfig:       []string{kubetypes.NodeAllocatableEnforcementKey},
 			evictionHard:            map[string]string{"memory.available": "150Mi"},
 			evictionSoft:            map[string]string{"memory.available": "300Mi"},
 			evictionSoftGracePeriod: map[string]string{"memory.available": "30s"},

pkg/kubelet/types/constants.go

@@ -24,4 +24,9 @@ const (
 	DockerContainerRuntime = "docker"
 	RktContainerRuntime    = "rkt"
 	RemoteContainerRuntime = "remote"
+
+	// User visible keys for managing node allocatable enforcement on the node.
+	NodeAllocatableEnforcementKey = "pods"
+	SystemReservedEnforcementKey  = "system-reserved"
+	KubeReservedEnforcementKey    = "kube-reserved"
 )

test/e2e_node/eviction_test.go

@@ -28,8 +28,8 @@ import (
 	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/kubelet/apis/kubeletconfig"
 	stats "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
-	"k8s.io/kubernetes/pkg/kubelet/cm"
 	kubeletmetrics "k8s.io/kubernetes/pkg/kubelet/metrics"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	"k8s.io/kubernetes/test/e2e/framework"
 
 	. "github.com/onsi/ginkgo"
@@ -104,7 +104,7 @@ var _ = framework.KubeDescribe("MemoryAllocatableEviction [Slow] [Serial] [Disru
 			initialConfig.KubeReserved = map[string]string{
 				string(v1.ResourceMemory): kubeReserved.String(),
 			}
-			initialConfig.EnforceNodeAllocatable = []string{cm.NodeAllocatableEnforcementKey}
+			initialConfig.EnforceNodeAllocatable = []string{kubetypes.NodeAllocatableEnforcementKey}
 			initialConfig.CgroupsPerQOS = true
 		})
 		runEvictionTest(f, pressureTimeout, expectedNodeCondition, logMemoryMetrics, []podEvictSpec{