Kubelet option to disable cgroup v1 support

Signed-off-by: Harshal Patil <harpatil@redhat.com>

pkg/kubelet/apis/config/validation/validation_linux.go

@@ -0,0 +1,36 @@
+//go:build linux
+// +build linux
+
+/*
+Copyright 2024 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 validation
+
+import (
+	"fmt"
+
+	libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
+	kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
+)
+
+// validateKubeletOSConfiguration validates os specific kubelet configuration and returns an error if it is invalid.
+func validateKubeletOSConfiguration(kc *kubeletconfig.KubeletConfiguration) error {
+	if kc.FailCgroupV1 && !libcontainercgroups.IsCgroup2UnifiedMode() {
+		return fmt.Errorf("kubelet is configured to not run on a host using cgroup v1. cgroup v1 support is in maintenance mode")
+	}
+
+	return nil
+}