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e2e_node add test for PodOverhead feature
This test will verify that the Pod cgroup created takes Overhead into account. Signed-off-by: Eric Ernst <eric@amperecomputing.com>
This commit is contained in:
Eric Ernst
Eric Ernst
parent
641616362d
commit
aa12e1f8c4
@ -133,6 +133,7 @@ go_test(
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"resource_usage_test.go",
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"restart_test.go",
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"runtime_conformance_test.go",
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"runtimeclass_test.go",
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"security_context_test.go",
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"startup_probe_test.go",
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"summary_test.go",
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@ -170,6 +171,7 @@ go_test(
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"//pkg/volume/util/fsquota:go_default_library",
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"//staging/src/k8s.io/api/apps/v1:go_default_library",
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"//staging/src/k8s.io/api/core/v1:go_default_library",
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"//staging/src/k8s.io/api/node/v1beta1:go_default_library",
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"//staging/src/k8s.io/api/scheduling/v1:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/api/equality:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
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148
test/e2e_node/runtimeclass_test.go
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148
test/e2e_node/runtimeclass_test.go
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@ -0,0 +1,148 @@
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/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2enode
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import (
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"context"
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"path/filepath"
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"strings"
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"k8s.io/api/core/v1"
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nodev1beta1 "k8s.io/api/node/v1beta1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/kubelet/cm"
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"k8s.io/kubernetes/test/e2e/framework"
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e2enode "k8s.io/kubernetes/test/e2e/framework/node"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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imageutils "k8s.io/kubernetes/test/utils/image"
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"github.com/onsi/ginkgo"
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)
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// makePodToVerifyCgroups returns a pod that verifies the existence of the specified cgroups.
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func makePodToVerifyCgroupSize(cgroupNames []string, expectedCPU string, expectedMemory string) *v1.Pod {
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// convert the names to their literal cgroupfs forms...
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cgroupFsNames := []string{}
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rootCgroupName := cm.NewCgroupName(cm.RootCgroupName, defaultNodeAllocatableCgroup)
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for _, baseName := range cgroupNames {
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// Add top level cgroup used to enforce node allocatable.
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cgroupComponents := strings.Split(baseName, "/")
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cgroupName := cm.NewCgroupName(rootCgroupName, cgroupComponents...)
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cgroupFsNames = append(cgroupFsNames, toCgroupFsName(cgroupName))
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}
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framework.Logf("expecting %v cgroups to be found", cgroupFsNames)
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// build the pod command to verify cgroup sizing
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command := ""
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for _, cgroupFsName := range cgroupFsNames {
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memLimitCgroup := filepath.Join("/host_cgroups/memory", cgroupFsName, "memory.limit_in_bytes")
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cpuQuotaCgroup := filepath.Join("/host_cgroups/cpu", cgroupFsName, "cpu.cfs_quota_us")
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localCommand := "if [ ! $(cat " + memLimitCgroup + ") == " + expectedMemory + " ] || [ ! $(cat " + cpuQuotaCgroup + ") == " + expectedCPU + " ]; then exit 1; fi; "
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framework.Logf("command: %v: ", localCommand)
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command += localCommand
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}
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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GenerateName: "cgroup-verification-pod-",
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},
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Spec: v1.PodSpec{
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RestartPolicy: v1.RestartPolicyNever,
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Containers: []v1.Container{
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{
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Image: busyboxImage,
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Name: "container",
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Command: []string{"sh", "-c", command},
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "sysfscgroup",
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MountPath: "/host_cgroups",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "sysfscgroup",
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VolumeSource: v1.VolumeSource{
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HostPath: &v1.HostPathVolumeSource{Path: "/sys/fs/cgroup"},
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},
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},
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},
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},
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}
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return pod
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}
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var _ = framework.KubeDescribe("Kubelet PodOverhead handling [LinuxOnly]", func() {
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f := framework.NewDefaultFramework("podoverhead-handling")
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ginkgo.Describe("PodOverhead cgroup accounting", func() {
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ginkgo.Context("On running pod with PodOverhead defined", func() {
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ginkgo.It("Pod cgroup should be sum of overhead and resource limits", func() {
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if !framework.TestContext.KubeletConfig.CgroupsPerQOS {
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return
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}
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var (
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guaranteedPod *v1.Pod
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podUID string
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handler string
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)
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ginkgo.By("Creating a RuntimeClass with Overhead definied", func() {
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handler = e2enode.PreconfiguredRuntimeClassHandler(framework.TestContext.ContainerRuntime)
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rc := &nodev1beta1.RuntimeClass{
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ObjectMeta: metav1.ObjectMeta{Name: handler},
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Handler: handler,
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Overhead: &nodev1beta1.Overhead{
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PodFixed: getResourceList("200m", "140Mi"),
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},
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}
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_, err := f.ClientSet.NodeV1beta1().RuntimeClasses().Create(context.TODO(), rc, metav1.CreateOptions{})
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framework.ExpectNoError(err, "failed to create RuntimeClass resource")
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})
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ginkgo.By("Creating a Guaranteed pod with which has Overhead defined", func() {
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guaranteedPod = f.PodClient().CreateSync(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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GenerateName: "pod-with-overhead-",
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Namespace: f.Namespace.Name,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Image: imageutils.GetPauseImageName(),
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Name: "container",
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Resources: getResourceRequirements(getResourceList("100m", "100Mi"), getResourceList("100m", "100Mi")),
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},
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},
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RuntimeClassName: &handler,
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Overhead: getResourceList("200m", "140Mi"),
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},
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})
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podUID = string(guaranteedPod.UID)
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})
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ginkgo.By("Checking if the pod cgroup was created appropriately", func() {
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cgroupsToVerify := []string{"pod" + podUID}
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pod := makePodToVerifyCgroupSize(cgroupsToVerify, "30000", "251658240")
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pod = f.PodClient().Create(pod)
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err := e2epod.WaitForPodSuccessInNamespace(f.ClientSet, pod.Name, f.Namespace.Name)
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framework.ExpectNoError(err)
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})
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})
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})
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})
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})
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