add flag concurrent-statefulset-syncs to kube-controller-manager (#79169)

* add flag `concurrent-statefulset-syncs` to set number of concurrent workers for statefulset controller

* change default value of ConcurrentStatefulSetSyncs from 1 to 5

* 1. fix doc comment of statefulset config types.go
2. add missing deps k8s.io/kubernetes/pkg/controller/statefulset/config

* add missing dep k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1

* updated bazel BUILD files

* update kube-controller-manager options testcase

* fix codegen

* fix golint error

* fix testcase

api/api-rules/violation_exceptions.list

@@ -599,6 +599,7 @@ API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,K
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,KubeControllerManagerConfiguration,ResourceQuotaController
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,KubeControllerManagerConfiguration,SAController
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,KubeControllerManagerConfiguration,ServiceController
+API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,KubeControllerManagerConfiguration,StatefulSetController
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,KubeControllerManagerConfiguration,TTLAfterFinishedController
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,NamespaceControllerConfiguration,ConcurrentNamespaceSyncs
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,NamespaceControllerConfiguration,NamespaceSyncPeriod
@@ -630,6 +631,7 @@ API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,S
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,SAControllerConfiguration,RootCAFile
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,SAControllerConfiguration,ServiceAccountKeyFile
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,ServiceControllerConfiguration,ConcurrentServiceSyncs
+API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,StatefulSetControllerConfiguration,ConcurrentStatefulSetSyncs
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,TTLAfterFinishedControllerConfiguration,ConcurrentTTLSyncs
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,VolumeConfiguration,EnableDynamicProvisioning
 API rule violation: names_match,k8s.io/kube-controller-manager/config/v1alpha1,VolumeConfiguration,EnableHostPathProvisioning

cmd/kube-controller-manager/app/apps.go

@@ -62,7 +62,7 @@ func startStatefulSetController(ctx ControllerContext) (http.Handler, bool, erro
 		ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
 		ctx.InformerFactory.Apps().V1().ControllerRevisions(),
 		ctx.ClientBuilder.ClientOrDie("statefulset-controller"),
-	).Run(1, ctx.Stop)
+	).Run(int(ctx.ComponentConfig.StatefulSetController.ConcurrentStatefulSetSyncs), ctx.Stop)
 	return nil, true, nil
 }
 

cmd/kube-controller-manager/app/options/BUILD

@@ -28,6 +28,7 @@ go_library(
         "replicationcontroller.go",
         "resourcequotacontroller.go",
         "serviceaccountcontroller.go",
+        "statefulsetcontroller.go",
         "ttlafterfinishedcontroller.go",
     ],
     importpath = "k8s.io/kubernetes/cmd/kube-controller-manager/app/options",
@@ -52,6 +53,7 @@ go_library(
         "//pkg/controller/replication/config:go_default_library",
         "//pkg/controller/resourcequota/config:go_default_library",
         "//pkg/controller/serviceaccount/config:go_default_library",
+        "//pkg/controller/statefulset/config:go_default_library",
         "//pkg/controller/ttlafterfinished/config:go_default_library",
         "//pkg/controller/volume/attachdetach/config:go_default_library",
         "//pkg/controller/volume/persistentvolume/config:go_default_library",
@@ -110,6 +112,7 @@ go_test(
         "//pkg/controller/resourcequota/config:go_default_library",
         "//pkg/controller/service/config:go_default_library",
         "//pkg/controller/serviceaccount/config:go_default_library",
+        "//pkg/controller/statefulset/config:go_default_library",
         "//pkg/controller/ttlafterfinished/config:go_default_library",
         "//pkg/controller/volume/attachdetach/config:go_default_library",
         "//pkg/controller/volume/persistentvolume/config:go_default_library",

cmd/kube-controller-manager/app/options/options.go

@@ -63,6 +63,7 @@ type KubeControllerManagerOptions struct {
 	CSRSigningController             *CSRSigningControllerOptions
 	DaemonSetController              *DaemonSetControllerOptions
 	DeploymentController             *DeploymentControllerOptions
+	StatefulSetController            *StatefulSetControllerOptions
 	DeprecatedFlags                  *DeprecatedControllerOptions
 	EndpointController               *EndpointControllerOptions
 	GarbageCollectorController       *GarbageCollectorControllerOptions
@@ -114,6 +115,9 @@ func NewKubeControllerManagerOptions() (*KubeControllerManagerOptions, error) {
 		DeploymentController: &DeploymentControllerOptions{
 			&componentConfig.DeploymentController,
 		},
+		StatefulSetController: &StatefulSetControllerOptions{
+			&componentConfig.StatefulSetController,
+		},
 		DeprecatedFlags: &DeprecatedControllerOptions{
 			&componentConfig.DeprecatedController,
 		},
@@ -216,6 +220,7 @@ func (s *KubeControllerManagerOptions) Flags(allControllers []string, disabledBy
 	s.AttachDetachController.AddFlags(fss.FlagSet("attachdetach controller"))
 	s.CSRSigningController.AddFlags(fss.FlagSet("csrsigning controller"))
 	s.DeploymentController.AddFlags(fss.FlagSet("deployment controller"))
+	s.StatefulSetController.AddFlags(fss.FlagSet("statefulset controller"))
 	s.DaemonSetController.AddFlags(fss.FlagSet("daemonset controller"))
 	s.DeprecatedFlags.AddFlags(fss.FlagSet("deprecated"))
 	s.EndpointController.AddFlags(fss.FlagSet("endpoint controller"))
@@ -261,6 +266,9 @@ func (s *KubeControllerManagerOptions) ApplyTo(c *kubecontrollerconfig.Config) e
 	if err := s.DeploymentController.ApplyTo(&c.ComponentConfig.DeploymentController); err != nil {
 		return err
 	}
+	if err := s.StatefulSetController.ApplyTo(&c.ComponentConfig.StatefulSetController); err != nil {
+		return err
+	}
 	if err := s.DeprecatedFlags.ApplyTo(&c.ComponentConfig.DeprecatedController); err != nil {
 		return err
 	}
@@ -342,6 +350,7 @@ func (s *KubeControllerManagerOptions) Validate(allControllers []string, disable
 	errs = append(errs, s.CSRSigningController.Validate()...)
 	errs = append(errs, s.DaemonSetController.Validate()...)
 	errs = append(errs, s.DeploymentController.Validate()...)
+	errs = append(errs, s.StatefulSetController.Validate()...)
 	errs = append(errs, s.DeprecatedFlags.Validate()...)
 	errs = append(errs, s.EndpointController.Validate()...)
 	errs = append(errs, s.GarbageCollectorController.Validate()...)

cmd/kube-controller-manager/app/options/options_test.go

@@ -47,6 +47,7 @@ import (
 	resourcequotaconfig "k8s.io/kubernetes/pkg/controller/resourcequota/config"
 	serviceconfig "k8s.io/kubernetes/pkg/controller/service/config"
 	serviceaccountconfig "k8s.io/kubernetes/pkg/controller/serviceaccount/config"
+	statefulsetconfig "k8s.io/kubernetes/pkg/controller/statefulset/config"
 	ttlafterfinishedconfig "k8s.io/kubernetes/pkg/controller/ttlafterfinished/config"
 	attachdetachconfig "k8s.io/kubernetes/pkg/controller/volume/attachdetach/config"
 	persistentvolumeconfig "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/config"
@@ -71,6 +72,7 @@ func TestAddFlags(t *testing.T) {
 		"--cluster-signing-cert-file=/cluster-signing-cert",
 		"--cluster-signing-key-file=/cluster-signing-key",
 		"--concurrent-deployment-syncs=10",
+		"--concurrent-statefulset-syncs=15",
 		"--concurrent-endpoint-syncs=10",
 		"--concurrent-gc-syncs=30",
 		"--concurrent-namespace-syncs=20",
@@ -216,6 +218,11 @@ func TestAddFlags(t *testing.T) {
 				DeploymentControllerSyncPeriod: metav1.Duration{Duration: 45 * time.Second},
 			},
 		},
+		StatefulSetController: &StatefulSetControllerOptions{
+			&statefulsetconfig.StatefulSetControllerConfiguration{
+				ConcurrentStatefulSetSyncs: 15,
+			},
+		},
 		DeprecatedFlags: &DeprecatedControllerOptions{
 			&kubectrlmgrconfig.DeprecatedControllerConfiguration{
 				DeletingPodsQPS:    0.1,

cmd/kube-controller-manager/app/options/statefulsetcontroller.go

@@ -0,0 +1,63 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package options
+
+import (
+	"fmt"
+
+	"github.com/spf13/pflag"
+
+	statefulsetconfig "k8s.io/kubernetes/pkg/controller/statefulset/config"
+)
+
+// StatefulSetControllerOptions holds the StatefulSetController options.
+type StatefulSetControllerOptions struct {
+	*statefulsetconfig.StatefulSetControllerConfiguration
+}
+
+// AddFlags adds flags related to StatefulSetController for controller manager to the specified FlagSet.
+func (o *StatefulSetControllerOptions) AddFlags(fs *pflag.FlagSet) {
+	if o == nil {
+		return
+	}
+
+	fs.Int32Var(&o.ConcurrentStatefulSetSyncs, "concurrent-statefulset-syncs", o.ConcurrentStatefulSetSyncs, "The number of statefulset objects that are allowed to sync concurrently. Larger number = more responsive statefulsets, but more CPU (and network) load")
+}
+
+// ApplyTo fills up StatefulSetController config with options.
+func (o *StatefulSetControllerOptions) ApplyTo(cfg *statefulsetconfig.StatefulSetControllerConfiguration) error {
+	if o == nil {
+		return nil
+	}
+
+	cfg.ConcurrentStatefulSetSyncs = o.ConcurrentStatefulSetSyncs
+
+	return nil
+}
+
+// Validate checks validation of StatefulSetControllerOptions.
+func (o *StatefulSetControllerOptions) Validate() []error {
+	if o == nil {
+		return nil
+	}
+
+	errs := []error{}
+	if o.ConcurrentStatefulSetSyncs < 1 {
+		errs = append(errs, fmt.Errorf("concurrent-statefulset-syncs must be greater than 0, but got %d", o.ConcurrentStatefulSetSyncs))
+	}
+	return errs
+}

hack/.golint_failures

@@ -90,6 +90,7 @@ pkg/controller/service
 pkg/controller/service/config/v1alpha1
 pkg/controller/serviceaccount/config/v1alpha1
 pkg/controller/statefulset
+pkg/controller/statefulset/config/v1alpha1
 pkg/controller/ttl
 pkg/controller/ttlafterfinished/config/v1alpha1
 pkg/controller/volume/attachdetach

pkg/controller/apis/config/BUILD

@@ -27,6 +27,7 @@ go_library(
         "//pkg/controller/resourcequota/config:go_default_library",
         "//pkg/controller/service/config:go_default_library",
         "//pkg/controller/serviceaccount/config:go_default_library",
+        "//pkg/controller/statefulset/config:go_default_library",
         "//pkg/controller/ttlafterfinished/config:go_default_library",
         "//pkg/controller/volume/attachdetach/config:go_default_library",
         "//pkg/controller/volume/persistentvolume/config:go_default_library",

pkg/controller/apis/config/types.go

@@ -35,6 +35,7 @@ import (
 	resourcequotaconfig "k8s.io/kubernetes/pkg/controller/resourcequota/config"
 	serviceconfig "k8s.io/kubernetes/pkg/controller/service/config"
 	serviceaccountconfig "k8s.io/kubernetes/pkg/controller/serviceaccount/config"
+	statefulsetconfig "k8s.io/kubernetes/pkg/controller/statefulset/config"
 	ttlafterfinishedconfig "k8s.io/kubernetes/pkg/controller/ttlafterfinished/config"
 	attachdetachconfig "k8s.io/kubernetes/pkg/controller/volume/attachdetach/config"
 	persistentvolumeconfig "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/config"
@@ -64,6 +65,9 @@ type KubeControllerManagerConfiguration struct {
 	// DeploymentControllerConfiguration holds configuration for
 	// DeploymentController related features.
 	DeploymentController deploymentconfig.DeploymentControllerConfiguration
+	// StatefulSetControllerConfiguration holds configuration for
+	// StatefulSetController related features.
+	StatefulSetController statefulsetconfig.StatefulSetControllerConfiguration
 	// DeprecatedControllerConfiguration holds configuration for some deprecated
 	// features.
 	DeprecatedController DeprecatedControllerConfiguration

pkg/controller/apis/config/v1alpha1/BUILD

@@ -31,6 +31,7 @@ go_library(
         "//pkg/controller/resourcequota/config/v1alpha1:go_default_library",
         "//pkg/controller/service/config/v1alpha1:go_default_library",
         "//pkg/controller/serviceaccount/config/v1alpha1:go_default_library",
+        "//pkg/controller/statefulset/config/v1alpha1:go_default_library",
         "//pkg/controller/ttlafterfinished/config/v1alpha1:go_default_library",
         "//pkg/controller/volume/attachdetach/config/v1alpha1:go_default_library",
         "//pkg/controller/volume/persistentvolume/config/v1alpha1:go_default_library",

pkg/controller/apis/config/v1alpha1/defaults.go

@@ -39,6 +39,7 @@ import (
 	resourcequotaconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/resourcequota/config/v1alpha1"
 	serviceconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/service/config/v1alpha1"
 	serviceaccountconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/serviceaccount/config/v1alpha1"
+	statefulsetconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1"
 	ttlafterfinishedconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/ttlafterfinished/config/v1alpha1"
 	attachdetachconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/volume/attachdetach/config/v1alpha1"
 	persistentvolumeconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/config/v1alpha1"
@@ -73,6 +74,8 @@ func SetDefaults_KubeControllerManagerConfiguration(obj *kubectrlmgrconfigv1alph
 	daemonconfigv1alpha1.RecommendedDefaultDaemonSetControllerConfiguration(&obj.DaemonSetController)
 	// Use the default RecommendedDefaultDeploymentControllerConfiguration options
 	deploymentconfigv1alpha1.RecommendedDefaultDeploymentControllerConfiguration(&obj.DeploymentController)
+	// Use the default RecommendedDefaultStatefulSetControllerConfiguration options
+	statefulsetconfigv1alpha1.RecommendedDefaultStatefulSetControllerConfiguration(&obj.StatefulSetController)
 	// Use the default RecommendedDefaultEndpointControllerConfiguration options
 	endpointconfigv1alpha1.RecommendedDefaultEndpointControllerConfiguration(&obj.EndpointController)
 	// Use the default RecommendedDefaultGenericControllerManagerConfiguration options

pkg/controller/apis/config/v1alpha1/doc.go

@@ -33,6 +33,7 @@ limitations under the License.
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/resourcequota/config/v1alpha1
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/service/config/v1alpha1
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/serviceaccount/config/v1alpha1
+// +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/ttlafterfinished/config/v1alpha1
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/volume/attachdetach/config/v1alpha1
 // +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/volume/persistentvolume/config/v1alpha1

pkg/controller/apis/config/v1alpha1/zz_generated.conversion.go

@@ -45,6 +45,7 @@ import (
 	resourcequotaconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/resourcequota/config/v1alpha1"
 	serviceconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/service/config/v1alpha1"
 	serviceaccountconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/serviceaccount/config/v1alpha1"
+	statefulsetconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1"
 	ttlafterfinishedconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/ttlafterfinished/config/v1alpha1"
 	attachdetachconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/volume/attachdetach/config/v1alpha1"
 	persistentvolumeconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/config/v1alpha1"
@@ -303,6 +304,9 @@ func autoConvert_v1alpha1_KubeControllerManagerConfiguration_To_config_KubeContr
 	if err := deploymentconfigv1alpha1.Convert_v1alpha1_DeploymentControllerConfiguration_To_config_DeploymentControllerConfiguration(&in.DeploymentController, &out.DeploymentController, s); err != nil {
 		return err
 	}
+	if err := statefulsetconfigv1alpha1.Convert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(&in.StatefulSetController, &out.StatefulSetController, s); err != nil {
+		return err
+	}
 	if err := Convert_v1alpha1_DeprecatedControllerConfiguration_To_config_DeprecatedControllerConfiguration(&in.DeprecatedController, &out.DeprecatedController, s); err != nil {
 		return err
 	}
@@ -378,6 +382,9 @@ func autoConvert_config_KubeControllerManagerConfiguration_To_v1alpha1_KubeContr
 	if err := deploymentconfigv1alpha1.Convert_config_DeploymentControllerConfiguration_To_v1alpha1_DeploymentControllerConfiguration(&in.DeploymentController, &out.DeploymentController, s); err != nil {
 		return err
 	}
+	if err := statefulsetconfigv1alpha1.Convert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(&in.StatefulSetController, &out.StatefulSetController, s); err != nil {
+		return err
+	}
 	if err := Convert_config_DeprecatedControllerConfiguration_To_v1alpha1_DeprecatedControllerConfiguration(&in.DeprecatedController, &out.DeprecatedController, s); err != nil {
 		return err
 	}

pkg/controller/apis/config/zz_generated.deepcopy.go

@@ -112,6 +112,7 @@ func (in *KubeControllerManagerConfiguration) DeepCopyInto(out *KubeControllerMa
 	out.CSRSigningController = in.CSRSigningController
 	out.DaemonSetController = in.DaemonSetController
 	out.DeploymentController = in.DeploymentController
+	out.StatefulSetController = in.StatefulSetController
 	out.DeprecatedController = in.DeprecatedController
 	out.EndpointController = in.EndpointController
 	in.GarbageCollectorController.DeepCopyInto(&out.GarbageCollectorController)

pkg/controller/statefulset/BUILD

@@ -92,6 +92,9 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [":package-srcs"],
+    srcs = [
+        ":package-srcs",
+        "//pkg/controller/statefulset/config:all-srcs",
+    ],
     tags = ["automanaged"],
 )

pkg/controller/statefulset/config/BUILD

@@ -0,0 +1,29 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "types.go",
+        "zz_generated.deepcopy.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/controller/statefulset/config",
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//pkg/controller/statefulset/config/v1alpha1:all-srcs",
+    ],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

pkg/controller/statefulset/config/OWNERS

@@ -0,0 +1,14 @@
+approvers:
+- api-approvers
+- deads2k
+- luxas
+- mtaufen
+- sttts
+- stewart-yu
+reviewers:
+- api-reviewers
+- deads2k
+- luxas
+- mtaufen
+- sttts
+- stewart-yu

pkg/controller/statefulset/config/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+
+package config // import "k8s.io/kubernetes/pkg/controller/statefulset/config"

pkg/controller/statefulset/config/types.go

@@ -0,0 +1,25 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package config
+
+// StatefulSetControllerConfiguration contains elements describing StatefulSetController.
+type StatefulSetControllerConfiguration struct {
+	// concurrentStatefulSetSyncs is the number of statefulset objects that are
+	// allowed to sync concurrently. Larger number = more responsive statefulsets,
+	// but more CPU (and network) load.
+	ConcurrentStatefulSetSyncs int32
+}

pkg/controller/statefulset/config/v1alpha1/BUILD

@@ -0,0 +1,36 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "conversion.go",
+        "defaults.go",
+        "doc.go",
+        "register.go",
+        "zz_generated.conversion.go",
+        "zz_generated.deepcopy.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//pkg/controller/statefulset/config:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/conversion:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//staging/src/k8s.io/kube-controller-manager/config/v1alpha1:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

pkg/controller/statefulset/config/v1alpha1/conversion.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/conversion"
+	"k8s.io/kube-controller-manager/config/v1alpha1"
+	statefulsetconfig "k8s.io/kubernetes/pkg/controller/statefulset/config"
+)
+
+// Important! The public back-and-forth conversion functions for the types in this package
+// with StatefulsetControllerConfiguration types need to be manually exposed like this in order for
+// other packages that reference this package to be able to call these conversion functions
+// in an autogenerated manner.
+// TODO: Fix the bug in conversion-gen so it automatically discovers these Convert_* functions
+// in autogenerated code as well.
+
+// Convert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration is an autogenerated conversion function.
+func Convert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(in *v1alpha1.StatefulSetControllerConfiguration, out *statefulsetconfig.StatefulSetControllerConfiguration, s conversion.Scope) error {
+	return autoConvert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(in, out, s)
+}
+
+// Convert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration is an autogenerated conversion function.
+func Convert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(in *statefulsetconfig.StatefulSetControllerConfiguration, out *v1alpha1.StatefulSetControllerConfiguration, s conversion.Scope) error {
+	return autoConvert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(in, out, s)
+}

pkg/controller/statefulset/config/v1alpha1/defaults.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	kubectrlmgrconfigv1alpha1 "k8s.io/kube-controller-manager/config/v1alpha1"
+)
+
+// RecommendedDefaultStatefulSetControllerConfiguration defaults a pointer to a
+// StatefulSetControllerConfiguration struct. This will set the recommended default
+// values, but they may be subject to change between API versions. This function
+// is intentionally not registered in the scheme as a "normal" `SetDefaults_Foo`
+// function to allow consumers of this type to set whatever defaults for their
+// embedded configs. Forcing consumers to use these defaults would be problematic
+// as defaulting in the scheme is done as part of the conversion, and there would
+// be no easy way to opt-out. Instead, if you want to use this defaulting method
+// run it in your wrapper struct of this type in its `SetDefaults_` method.
+func RecommendedDefaultStatefulSetControllerConfiguration(obj *kubectrlmgrconfigv1alpha1.StatefulSetControllerConfiguration) {
+	if obj.ConcurrentStatefulSetSyncs == 0 {
+		obj.ConcurrentStatefulSetSyncs = 5
+	}
+}

pkg/controller/statefulset/config/v1alpha1/doc.go

@@ -0,0 +1,21 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+// +k8s:conversion-gen=k8s.io/kubernetes/pkg/controller/statefulset/config
+// +k8s:conversion-gen-external-types=k8s.io/kube-controller-manager/config/v1alpha1
+
+package v1alpha1 // import "k8s.io/kubernetes/pkg/controller/statefulset/config/v1alpha1"

pkg/controller/statefulset/config/v1alpha1/register.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+var (
+	// SchemeBuilder is the scheme builder with scheme init functions to run for this API package
+	SchemeBuilder runtime.SchemeBuilder
+	// localSchemeBuilder extends the SchemeBuilder instance with the external types. In this package,
+	// defaulting and conversion init funcs are registered as well.
+	localSchemeBuilder = &SchemeBuilder
+	// AddToScheme is a global function that registers this API group & version to a scheme
+	AddToScheme = localSchemeBuilder.AddToScheme
+)

pkg/controller/statefulset/config/v1alpha1/zz_generated.conversion.go

@@ -0,0 +1,101 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by conversion-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	conversion "k8s.io/apimachinery/pkg/conversion"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	v1alpha1 "k8s.io/kube-controller-manager/config/v1alpha1"
+	config "k8s.io/kubernetes/pkg/controller/statefulset/config"
+)
+
+func init() {
+	localSchemeBuilder.Register(RegisterConversions)
+}
+
+// RegisterConversions adds conversion functions to the given scheme.
+// Public to allow building arbitrary schemes.
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddGeneratedConversionFunc((*v1alpha1.GroupResource)(nil), (*v1.GroupResource)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_GroupResource_To_v1_GroupResource(a.(*v1alpha1.GroupResource), b.(*v1.GroupResource), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*v1.GroupResource)(nil), (*v1alpha1.GroupResource)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1_GroupResource_To_v1alpha1_GroupResource(a.(*v1.GroupResource), b.(*v1alpha1.GroupResource), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*v1alpha1.StatefulSetControllerConfiguration)(nil), (*config.StatefulSetControllerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(a.(*v1alpha1.StatefulSetControllerConfiguration), b.(*config.StatefulSetControllerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*config.StatefulSetControllerConfiguration)(nil), (*v1alpha1.StatefulSetControllerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(a.(*config.StatefulSetControllerConfiguration), b.(*v1alpha1.StatefulSetControllerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddConversionFunc((*config.StatefulSetControllerConfiguration)(nil), (*v1alpha1.StatefulSetControllerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(a.(*config.StatefulSetControllerConfiguration), b.(*v1alpha1.StatefulSetControllerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddConversionFunc((*v1alpha1.StatefulSetControllerConfiguration)(nil), (*config.StatefulSetControllerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(a.(*v1alpha1.StatefulSetControllerConfiguration), b.(*config.StatefulSetControllerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func autoConvert_v1alpha1_GroupResource_To_v1_GroupResource(in *v1alpha1.GroupResource, out *v1.GroupResource, s conversion.Scope) error {
+	out.Group = in.Group
+	out.Resource = in.Resource
+	return nil
+}
+
+// Convert_v1alpha1_GroupResource_To_v1_GroupResource is an autogenerated conversion function.
+func Convert_v1alpha1_GroupResource_To_v1_GroupResource(in *v1alpha1.GroupResource, out *v1.GroupResource, s conversion.Scope) error {
+	return autoConvert_v1alpha1_GroupResource_To_v1_GroupResource(in, out, s)
+}
+
+func autoConvert_v1_GroupResource_To_v1alpha1_GroupResource(in *v1.GroupResource, out *v1alpha1.GroupResource, s conversion.Scope) error {
+	out.Group = in.Group
+	out.Resource = in.Resource
+	return nil
+}
+
+// Convert_v1_GroupResource_To_v1alpha1_GroupResource is an autogenerated conversion function.
+func Convert_v1_GroupResource_To_v1alpha1_GroupResource(in *v1.GroupResource, out *v1alpha1.GroupResource, s conversion.Scope) error {
+	return autoConvert_v1_GroupResource_To_v1alpha1_GroupResource(in, out, s)
+}
+
+func autoConvert_v1alpha1_StatefulSetControllerConfiguration_To_config_StatefulSetControllerConfiguration(in *v1alpha1.StatefulSetControllerConfiguration, out *config.StatefulSetControllerConfiguration, s conversion.Scope) error {
+	out.ConcurrentStatefulSetSyncs = in.ConcurrentStatefulSetSyncs
+	return nil
+}
+
+func autoConvert_config_StatefulSetControllerConfiguration_To_v1alpha1_StatefulSetControllerConfiguration(in *config.StatefulSetControllerConfiguration, out *v1alpha1.StatefulSetControllerConfiguration, s conversion.Scope) error {
+	out.ConcurrentStatefulSetSyncs = in.ConcurrentStatefulSetSyncs
+	return nil
+}

pkg/controller/statefulset/config/v1alpha1/zz_generated.deepcopy.go

@@ -0,0 +1,21 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package v1alpha1

pkg/controller/statefulset/config/zz_generated.deepcopy.go

@@ -0,0 +1,37 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package config
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetControllerConfiguration) DeepCopyInto(out *StatefulSetControllerConfiguration) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetControllerConfiguration.
+func (in *StatefulSetControllerConfiguration) DeepCopy() *StatefulSetControllerConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetControllerConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}

staging/src/k8s.io/kube-controller-manager/config/v1alpha1/types.go

@@ -102,6 +102,9 @@ type KubeControllerManagerConfiguration struct {
 	// DeploymentControllerConfiguration holds configuration for
 	// DeploymentController related features.
 	DeploymentController DeploymentControllerConfiguration
+	// StatefulSetControllerConfiguration holds configuration for
+	// StatefulSetController related features.
+	StatefulSetController StatefulSetControllerConfiguration
 	// DeprecatedControllerConfiguration holds configuration for some deprecated
 	// features.
 	DeprecatedController DeprecatedControllerConfiguration
@@ -260,6 +263,14 @@ type DeploymentControllerConfiguration struct {
 	DeploymentControllerSyncPeriod metav1.Duration
 }
 
+// StatefulSetControllerConfiguration contains elements describing StatefulSetController.
+type StatefulSetControllerConfiguration struct {
+	// concurrentStatefulSetSyncs is the number of statefulset objects that are
+	// allowed to sync concurrently. Larger number = more responsive statefulsets,
+	// but more CPU (and network) load.
+	ConcurrentStatefulSetSyncs int32
+}
+
 // DeprecatedControllerConfiguration contains elements be deprecated.
 type DeprecatedControllerConfiguration struct {
 	// DEPRECATED: deletingPodsQps is the number of nodes per second on which pods are deleted in

staging/src/k8s.io/kube-controller-manager/config/v1alpha1/zz_generated.deepcopy.go

@@ -286,6 +286,7 @@ func (in *KubeControllerManagerConfiguration) DeepCopyInto(out *KubeControllerMa
 	out.CSRSigningController = in.CSRSigningController
 	out.DaemonSetController = in.DaemonSetController
 	out.DeploymentController = in.DeploymentController
+	out.StatefulSetController = in.StatefulSetController
 	out.DeprecatedController = in.DeprecatedController
 	out.EndpointController = in.EndpointController
 	in.GarbageCollectorController.DeepCopyInto(&out.GarbageCollectorController)
@@ -511,6 +512,22 @@ func (in *ServiceControllerConfiguration) DeepCopy() *ServiceControllerConfigura
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetControllerConfiguration) DeepCopyInto(out *StatefulSetControllerConfiguration) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetControllerConfiguration.
+func (in *StatefulSetControllerConfiguration) DeepCopy() *StatefulSetControllerConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetControllerConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *TTLAfterFinishedControllerConfiguration) DeepCopyInto(out *TTLAfterFinishedControllerConfiguration) {
 	*out = *in