github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-23 19:56:01 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #74743 from lee0c/lecattar/win-mem-limits

Browse Source 
Windows nodeAllocatable test
This commit is contained in:
Kubernetes Prow Robot 2019-03-06 00:44:17 -08:00 committed by GitHub
commit 8060c94503
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 377 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
test/e2e/windows/BUILD
View File

@ -8,20 +8,25 @@ go_library(
"density.go",
"framework.go",
"hybrid_network.go",
"memory_limits.go",
"networking.go",
"volumes.go",
],
importpath = "k8s.io/kubernetes/test/e2e/windows",
visibility = ["//visibility:public"],
deps = [
"//pkg/kubelet/apis/config:go_default_library",
"//staging/src/k8s.io/api/core/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/api/resource:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/uuid:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/watch:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes/scheme:go_default_library",
"//staging/src/k8s.io/client-go/tools/cache:go_default_library",
"//staging/src/k8s.io/kubelet/config/v1beta1:go_default_library",
"//test/e2e/framework:go_default_library",
"//test/utils/image:go_default_library",
"//vendor/github.com/onsi/ginkgo:go_default_library",

91
test/e2e/windows/density.go
View File

@ -22,7 +22,7 @@ import (
"sync"
"time"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
@ -68,9 +68,7 @@ var _ = SIGDescribe("[Feature:Windows] Density [Serial] [Slow]", func() {
desc := fmt.Sprintf("latency/resource should be within limit when create %d pods with %v interval", itArg.podsNr, itArg.interval)
ginkgo.It(desc, func() {
itArg.createMethod = "batch"
runDensityBatchTest(f, itArg)
})
}
})
@ -107,7 +105,7 @@ func runDensityBatchTest(f *framework.Framework, testArg densityTest) (time.Dura
)
// create test pod data structure
pods := newTestPods(testArg.podsNr, false, imageutils.GetPauseImageName(), podType)
pods := newDensityTestPods(testArg.podsNr, false, imageutils.GetPauseImageName(), podType)
// the controller watches the change of pod status
controller := newInformerWatchPod(f, mutex, watchTimes, podType)
@ -221,64 +219,47 @@ func newInformerWatchPod(f *framework.Framework, mutex *sync.Mutex, watchTimes m
return controller
}
// newTestPods creates a list of pods (specification) for test.
func newTestPods(numPods int, volume bool, imageName, podType string) []*v1.Pod {
// newDensityTestPods creates a list of pods (specification) for test.
func newDensityTestPods(numPods int, volume bool, imageName, podType string) []*v1.Pod {
var pods []*v1.Pod
for i := 0; i < numPods; i++ {
podName := "test-" + string(uuid.NewUUID())
labels := map[string]string{
"type": podType,
"name": podName,
}
if volume {
pods = append(pods,
&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: labels,
pod := v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{
"type": podType,
"name": podName,
},
},
Spec: v1.PodSpec{
// Restart policy is always (default).
Containers: []v1.Container{
{
Image: imageName,
Name: podName,
},
Spec: v1.PodSpec{
// Restart policy is always (default).
Containers: []v1.Container{
{
Image: imageName,
Name: podName,
VolumeMounts: []v1.VolumeMount{
{MountPath: "/test-volume-mnt", Name: podName + "-volume"},
},
},
},
NodeSelector: map[string]string{
"beta.kubernetes.io/os": "windows",
},
Volumes: []v1.Volume{
{Name: podName + "-volume", VolumeSource: v1.VolumeSource{EmptyDir: &v1.EmptyDirVolumeSource{}}},
},
},
})
} else {
pods = append(pods,
&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: labels,
},
Spec: v1.PodSpec{
// Restart policy is always (default).
Containers: []v1.Container{
{
Image: imageName,
Name: podName,
},
},
NodeSelector: map[string]string{
"beta.kubernetes.io/os": "windows",
},
},
})
},
NodeSelector: map[string]string{
"beta.kubernetes.io/os": "windows",
},
},
}
if volume {
pod.Spec.Containers[0].VolumeMounts = []v1.VolumeMount{
{MountPath: "/test-volume-mnt", Name: podName + "-volume"},
}
pod.Spec.Volumes = []v1.Volume{
{Name: podName + "-volume", VolumeSource: v1.VolumeSource{EmptyDir: &v1.EmptyDirVolumeSource{}}},
}
}
pods = append(pods, &pod)
}
return pods
}

336
test/e2e/windows/memory_limits.go Executable file
View File

@ -0,0 +1,336 @@
/*
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 windows
import (
"crypto/tls"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"regexp"
"strconv"
"time"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/util/uuid"
"k8s.io/client-go/kubernetes/scheme"
kubeletconfigv1beta1 "k8s.io/kubelet/config/v1beta1"
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
"k8s.io/kubernetes/test/e2e/framework"
imageutils "k8s.io/kubernetes/test/utils/image"
"github.com/onsi/ginkgo"
"github.com/onsi/gomega"
)
var _ = SIGDescribe("[Feature:Windows] Memory Limits [Serial] [Slow]", func() {
f := framework.NewDefaultFramework("memory-limit-test-windows")
ginkgo.BeforeEach(func() {
// NOTE(vyta): these tests are Windows specific
framework.SkipUnlessNodeOSDistroIs("windows")
})
ginkgo.Context("Allocatable node memory", func() {
ginkgo.It("should be equal to a calculated allocatable memory value", func() {
checkNodeAllocatableTest(f)
})
})
ginkgo.Context("attempt to deploy past allocatable memory limits", func() {
ginkgo.It("should fail deployments of pods once there isn't enough memory", func() {
overrideAllocatableMemoryTest(f, 4)
})
})
})
type nodeMemory struct {
// capacity
capacity resource.Quantity
// allocatable memory
allocatable resource.Quantity
// memory reserved for OS level processes
systemReserve resource.Quantity
// memory reserved for kubelet (not implemented)
kubeReserve resource.Quantity
// grace period memory limit (not implemented)
softEviction resource.Quantity
// no grace period memory limit
hardEviction resource.Quantity
}
// runDensityBatchTest runs the density batch pod creation test
// checks that a calculated value for NodeAllocatable is equal to the reported value
func checkNodeAllocatableTest(f *framework.Framework) {
nodeMem := getNodeMemory(f)
framework.Logf("nodeMem says: %+v", nodeMem)
// calculate the allocatable mem based on capacity - reserved amounts
calculatedNodeAlloc := nodeMem.capacity.Copy()
calculatedNodeAlloc.Sub(nodeMem.systemReserve)
calculatedNodeAlloc.Sub(nodeMem.kubeReserve)
calculatedNodeAlloc.Sub(nodeMem.softEviction)
calculatedNodeAlloc.Sub(nodeMem.hardEviction)
ginkgo.By(fmt.Sprintf("Checking stated allocatable memory %v against calculated allocatable memory %v", &nodeMem.allocatable, calculatedNodeAlloc))
// sanity check against stated allocatable
gomega.Expect(calculatedNodeAlloc.Cmp(nodeMem.allocatable)).To(gomega.Equal(0))
}
// Deploys `allocatablePods + 1` pods, each with a memory limit of `1/allocatablePods` of the total allocatable
// memory, then confirms that the last pod failed because of failedScheduling
func overrideAllocatableMemoryTest(f *framework.Framework, allocatablePods int) {
const (
podType = "memory_limit_test_pod"
)
totalAllocatable := getTotalAllocatableMemory(f)
memValue := totalAllocatable.Value()
memPerPod := memValue / int64(allocatablePods)
ginkgo.By(fmt.Sprintf("Deploying %d pods with mem limit %v, then one additional pod", allocatablePods, memPerPod))
// these should all work
pods := newMemLimitTestPods(allocatablePods, imageutils.GetPauseImageName(), podType, strconv.FormatInt(memPerPod, 10))
f.PodClient().CreateBatch(pods)
failurePods := newMemLimitTestPods(1, imageutils.GetPauseImageName(), podType, strconv.FormatInt(memPerPod, 10))
f.PodClient().Create(failurePods[0])
gomega.Eventually(func() bool {
eventList, err := f.ClientSet.CoreV1().Events(f.Namespace.Name).List(metav1.ListOptions{})
framework.ExpectNoError(err)
for _, e := range eventList.Items {
// Look for an event that shows FailedScheduling
if e.Type == "Warning" && e.Reason == "FailedScheduling" && e.InvolvedObject.Name == failurePods[0].ObjectMeta.Name {
framework.Logf("Found %+v event with message %+v", e.Reason, e.Message)
return true
}
}
return false
}, 3*time.Minute, 10*time.Second).Should(gomega.Equal(true))
}
// newMemLimitTestPods creates a list of pods (specification) for test.
func newMemLimitTestPods(numPods int, imageName, podType string, memoryLimit string) []*v1.Pod {
var pods []*v1.Pod
memLimitQuantity, err := resource.ParseQuantity(memoryLimit)
framework.ExpectNoError(err)
for i := 0; i < numPods; i++ {
podName := "test-" + string(uuid.NewUUID())
pod := v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{
"type": podType,
"name": podName,
},
},
Spec: v1.PodSpec{
// Restart policy is always (default).
Containers: []v1.Container{
{
Image: imageName,
Name: podName,
Resources: v1.ResourceRequirements{
Limits: v1.ResourceList{
v1.ResourceMemory: memLimitQuantity,
},
},
},
},
NodeSelector: map[string]string{
"beta.kubernetes.io/os": "windows",
},
},
}
pods = append(pods, &pod)
}
return pods
}
// getNodeMemory populates a nodeMemory struct with information from the first
func getNodeMemory(f *framework.Framework) nodeMemory {
selector := labels.Set{"beta.kubernetes.io/os": "windows"}.AsSelector()
nodeList, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{
LabelSelector: selector.String(),
})
framework.ExpectNoError(err)
// Assuming that agent nodes have the same config
// Make sure there is >0 agent nodes, then use the first one for info
gomega.Expect(nodeList.Size()).NotTo(gomega.Equal(0))
ginkgo.By("Getting memory details from node status and kubelet config")
status := nodeList.Items[0].Status
nodeName := nodeList.Items[0].ObjectMeta.Name
kubeletConfig, err := getCurrentKubeletConfig(nodeName)
framework.ExpectNoError(err)
systemReserve, err := resource.ParseQuantity(kubeletConfig.SystemReserved["memory"])
if err != nil {
systemReserve = *resource.NewQuantity(0, resource.BinarySI)
}
kubeReserve, err := resource.ParseQuantity(kubeletConfig.KubeReserved["memory"])
if err != nil {
kubeReserve = *resource.NewQuantity(0, resource.BinarySI)
}
hardEviction, err := resource.ParseQuantity(kubeletConfig.EvictionHard["memory.available"])
if err != nil {
hardEviction = *resource.NewQuantity(0, resource.BinarySI)
}
softEviction, err := resource.ParseQuantity(kubeletConfig.EvictionSoft["memory.available"])
if err != nil {
softEviction = *resource.NewQuantity(0, resource.BinarySI)
}
nodeMem := nodeMemory{
capacity: status.Capacity[v1.ResourceMemory],
allocatable: status.Allocatable[v1.ResourceMemory],
systemReserve: systemReserve,
hardEviction: hardEviction,
// these are not implemented and are here for future use - will always be 0 at the moment
kubeReserve: kubeReserve,
softEviction: softEviction,
}
return nodeMem
}
// getTotalAllocatableMemory gets the sum of all agent node's allocatable memory
func getTotalAllocatableMemory(f *framework.Framework) *resource.Quantity {
selector := labels.Set{"beta.kubernetes.io/os": "windows"}.AsSelector()
nodeList, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{
LabelSelector: selector.String(),
})
framework.ExpectNoError(err)
ginkgo.By("Summing allocatable memory across all agent nodes")
totalAllocatable := resource.NewQuantity(0, resource.BinarySI)
for _, node := range nodeList.Items {
status := node.Status
totalAllocatable.Add(status.Allocatable[v1.ResourceMemory])
}
return totalAllocatable
}
// getCurrentKubeletConfig modified from test/e2e_node/util.go
func getCurrentKubeletConfig(nodeName string) (*kubeletconfig.KubeletConfiguration, error) {
resp := pollConfigz(5*time.Minute, 5*time.Second, nodeName)
kubeCfg, err := decodeConfigz(resp)
if err != nil {
return nil, err
}
return kubeCfg, nil
}
// Causes the test to fail, or returns a status 200 response from the /configz endpoint
func pollConfigz(timeout time.Duration, pollInterval time.Duration, nodeName string) *http.Response {
// start local proxy, so we can send graceful deletion over query string, rather than body parameter
ginkgo.By("Opening proxy to cluster")
cmd := framework.KubectlCmd("proxy", "-p", "0")
stdout, stderr, err := framework.StartCmdAndStreamOutput(cmd)
framework.ExpectNoError(err)
defer stdout.Close()
defer stderr.Close()
defer framework.TryKill(cmd)
buf := make([]byte, 128)
var n int
n, err = stdout.Read(buf)
framework.ExpectNoError(err)
output := string(buf[:n])
proxyRegexp := regexp.MustCompile("Starting to serve on 127.0.0.1:([0-9]+)")
match := proxyRegexp.FindStringSubmatch(output)
gomega.Expect(len(match)).To(gomega.Equal(2))
port, err := strconv.Atoi(match[1])
framework.ExpectNoError(err)
ginkgo.By("http requesting node kubelet /configz")
endpoint := fmt.Sprintf("http://127.0.0.1:%d/api/v1/nodes/%s/proxy/configz", port, nodeName)
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
req, err := http.NewRequest("GET", endpoint, nil)
framework.ExpectNoError(err)
req.Header.Add("Accept", "application/json")
var resp *http.Response
gomega.Eventually(func() bool {
resp, err = client.Do(req)
if err != nil {
framework.Logf("Failed to get /configz, retrying. Error: %v", err)
return false
}
if resp.StatusCode != 200 {
framework.Logf("/configz response status not 200, retrying. Response was: %+v", resp)
return false
}
return true
}, timeout, pollInterval).Should(gomega.Equal(true))
return resp
}
// Decodes the http response from /configz and returns a kubeletconfig.KubeletConfiguration (internal type).
func decodeConfigz(resp *http.Response) (*kubeletconfig.KubeletConfiguration, error) {
// This hack because /configz reports the following structure:
// {"kubeletconfig": {the JSON representation of kubeletconfigv1beta1.KubeletConfiguration}}
type configzWrapper struct {
ComponentConfig kubeletconfigv1beta1.KubeletConfiguration `json:"kubeletconfig"`
}
configz := configzWrapper{}
kubeCfg := kubeletconfig.KubeletConfiguration{}
contentsBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
err = json.Unmarshal(contentsBytes, &configz)
if err != nil {
return nil, err
}
err = scheme.Scheme.Convert(&configz.ComponentConfig, &kubeCfg, nil)
if err != nil {
return nil, err
}
return &kubeCfg, nil
}