Inject top level QoS cgroup creation in the Kubelet

test/e2e_node/cgroup_manager_test.go

@@ -0,0 +1,77 @@
+/*
+Copyright 2016 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 e2e_node
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/util"
+	"k8s.io/kubernetes/test/e2e/framework"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = framework.KubeDescribe("Kubelet Cgroup Manager", func() {
+	f := NewDefaultFramework("kubelet-cgroup-manager")
+	Describe("QOS containers", func() {
+		Context("On enabling QOS cgroup hierarchy", func() {
+			It("Top level QoS containers should have been created", func() {
+				if framework.TestContext.CgroupsPerQOS {
+					podName := "qos-pod" + string(util.NewUUID())
+					contName := "qos-container" + string(util.NewUUID())
+					pod := &api.Pod{
+						ObjectMeta: api.ObjectMeta{
+							Name:      podName,
+							Namespace: f.Namespace.Name,
+						},
+						Spec: api.PodSpec{
+							// Don't restart the Pod since it is expected to exit
+							RestartPolicy: api.RestartPolicyNever,
+							Containers: []api.Container{
+								{
+									Image:   "gcr.io/google_containers/busybox:1.24",
+									Name:    contName,
+									Command: []string{"sh", "-c", "if [ -d /tmp/memory/Burstable ] && [ -d /tmp/memory/BestEffort ]; then exit 0; else exit 1; fi"},
+									VolumeMounts: []api.VolumeMount{
+										{
+											Name:      "sysfscgroup",
+											MountPath: "/tmp",
+										},
+									},
+								},
+							},
+							Volumes: []api.Volume{
+								{
+									Name: "sysfscgroup",
+									VolumeSource: api.VolumeSource{
+										HostPath: &api.HostPathVolumeSource{Path: "/sys/fs/cgroup"},
+									},
+								},
+							},
+						},
+					}
+					f.MungePodSpec(pod)
+					podClient := f.Client.Pods(f.Namespace.Name)
+					_, err := podClient.Create(pod)
+					Expect(err).NotTo(HaveOccurred())
+					err = framework.WaitForPodSuccessInNamespace(f.Client, podName, contName, f.Namespace.Name)
+					Expect(err).NotTo(HaveOccurred())
+				}
+			})
+		})
+	})
+})