Merge pull request #27874 from ingvagabund/kubelet-kernel-tunning-behaviour-new-flags

Automatic merge from submit-queue

[kubelet] Introduce --protect-kernel-defaults flag to make the tunable behaviour configurable

Let's make the default behaviour of kernel tuning configurable. The default behaviour is kept modify as has been so far.

pkg/apis/componentconfig/types.go

@@ -397,6 +397,8 @@ type KubeletConfiguration struct {
 	// Currently only cpu and memory are supported. [default=none]
 	// See http://releases.k8s.io/HEAD/docs/user-guide/compute-resources.md for more detail.
 	KubeReserved utilconfig.ConfigurationMap `json:"kubeReserved"`
+	// Default behaviour for kernel tuning
+	ProtectKernelDefaults bool `json:"protectKernelDefaults"`
 }
 
 type KubeSchedulerConfiguration struct {

pkg/apis/componentconfig/v1alpha1/types.go

@@ -452,4 +452,6 @@ type KubeletConfiguration struct {
 	// Currently only cpu and memory are supported. [default=none]
 	// See http://releases.k8s.io/HEAD/docs/user-guide/compute-resources.md for more detail.
 	KubeReserved map[string]string `json:"kubeReserved"`
+	// Default behaviour for kernel tuning
+	ProtectKernelDefaults bool `json:"protectKernelDefaults"`
 }

pkg/apis/componentconfig/v1alpha1/zz_generated.conversion.go

@@ -319,6 +319,7 @@ func autoConvert_v1alpha1_KubeletConfiguration_To_componentconfig_KubeletConfigu
 	} else {
 		out.KubeReserved = nil
 	}
+	out.ProtectKernelDefaults = in.ProtectKernelDefaults
 	return nil
 }
 
@@ -483,6 +484,7 @@ func autoConvert_componentconfig_KubeletConfiguration_To_v1alpha1_KubeletConfigu
 	} else {
 		out.KubeReserved = nil
 	}
+	out.ProtectKernelDefaults = in.ProtectKernelDefaults
 	return nil
 }
 

pkg/apis/componentconfig/v1alpha1/zz_generated.deepcopy.go

@@ -377,6 +377,7 @@ func DeepCopy_v1alpha1_KubeletConfiguration(in interface{}, out interface{}, c *
 		} else {
 			out.KubeReserved = nil
 		}
+		out.ProtectKernelDefaults = in.ProtectKernelDefaults
 		return nil
 	}
 }

pkg/apis/componentconfig/zz_generated.deepcopy.go

@@ -325,6 +325,7 @@ func DeepCopy_componentconfig_KubeletConfiguration(in interface{}, out interface
 		} else {
 			out.KubeReserved = nil
 		}
+		out.ProtectKernelDefaults = in.ProtectKernelDefaults
 		return nil
 	}
 }