mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-19 09:52:49 +00:00
2f6c4f5eab
All code must use the context from Ginkgo when doing API calls or polling for a change, otherwise the code would not return immediately when the test gets aborted.
259 lines
8.7 KiB
Go
259 lines
8.7 KiB
Go
/*
|
|
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 (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"time"
|
|
|
|
kubeletconfigv1beta1 "k8s.io/kubelet/config/v1beta1"
|
|
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
|
|
kubeletconfigscheme "k8s.io/kubernetes/pkg/kubelet/apis/config/scheme"
|
|
|
|
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/kubernetes/test/e2e/framework"
|
|
e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
|
|
imageutils "k8s.io/kubernetes/test/utils/image"
|
|
admissionapi "k8s.io/pod-security-admission/api"
|
|
|
|
"github.com/onsi/ginkgo/v2"
|
|
"github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = SIGDescribe("[Feature:Windows] Memory Limits [Serial] [Slow]", func() {
|
|
|
|
f := framework.NewDefaultFramework("memory-limit-test-windows")
|
|
f.NamespacePodSecurityEnforceLevel = admissionapi.LevelPrivileged
|
|
|
|
ginkgo.BeforeEach(func() {
|
|
// NOTE(vyta): these tests are Windows specific
|
|
e2eskipper.SkipUnlessNodeOSDistroIs("windows")
|
|
})
|
|
|
|
ginkgo.Context("Allocatable node memory", func() {
|
|
ginkgo.It("should be equal to a calculated allocatable memory value", func(ctx context.Context) {
|
|
checkNodeAllocatableTest(ctx, 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(ctx context.Context) {
|
|
overrideAllocatableMemoryTest(ctx, f, framework.TestContext.CloudConfig.NumNodes)
|
|
})
|
|
})
|
|
|
|
})
|
|
|
|
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(ctx context.Context, f *framework.Framework) {
|
|
|
|
nodeMem := getNodeMemory(ctx, f)
|
|
framework.Logf("nodeMem says: %+v", nodeMem)
|
|
|
|
// calculate the allocatable mem based on capacity - reserved amounts
|
|
calculatedNodeAlloc := nodeMem.capacity.DeepCopy()
|
|
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
|
|
framework.ExpectEqual(calculatedNodeAlloc.Cmp(nodeMem.allocatable), 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(ctx context.Context, f *framework.Framework, allocatablePods int) {
|
|
selector := labels.Set{"kubernetes.io/os": "windows"}.AsSelector()
|
|
nodeList, err := f.ClientSet.CoreV1().Nodes().List(ctx, metav1.ListOptions{
|
|
LabelSelector: selector.String(),
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
for _, node := range nodeList.Items {
|
|
status := node.Status
|
|
podName := "mem-test-" + string(uuid.NewUUID())
|
|
pod := &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: podName,
|
|
Image: imageutils.GetPauseImageName(),
|
|
Resources: v1.ResourceRequirements{
|
|
Limits: v1.ResourceList{
|
|
v1.ResourceMemory: status.Allocatable[v1.ResourceMemory],
|
|
},
|
|
},
|
|
},
|
|
},
|
|
NodeSelector: map[string]string{
|
|
"kubernetes.io/os": "windows",
|
|
},
|
|
NodeName: node.Name,
|
|
},
|
|
}
|
|
_, err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(ctx, pod, metav1.CreateOptions{})
|
|
framework.ExpectNoError(err)
|
|
}
|
|
podName := "mem-failure-pod"
|
|
failurePod := &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: podName,
|
|
Image: imageutils.GetPauseImageName(),
|
|
Resources: v1.ResourceRequirements{
|
|
Limits: v1.ResourceList{
|
|
v1.ResourceMemory: *resource.NewQuantity(1024*1024*1024, resource.BinarySI),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
NodeSelector: map[string]string{
|
|
"kubernetes.io/os": "windows",
|
|
},
|
|
},
|
|
}
|
|
failurePod, err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(ctx, failurePod, metav1.CreateOptions{})
|
|
framework.ExpectNoError(err)
|
|
gomega.Eventually(ctx, func() bool {
|
|
eventList, err := f.ClientSet.CoreV1().Events(f.Namespace.Name).List(ctx, 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 == failurePod.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))
|
|
|
|
}
|
|
|
|
// getNodeMemory populates a nodeMemory struct with information from the first
|
|
func getNodeMemory(ctx context.Context, f *framework.Framework) nodeMemory {
|
|
selector := labels.Set{"kubernetes.io/os": "windows"}.AsSelector()
|
|
nodeList, err := f.ClientSet.CoreV1().Nodes().List(ctx, 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
|
|
framework.ExpectNotEqual(nodeList.Size(), 0)
|
|
|
|
ginkgo.By("Getting memory details from node status and kubelet config")
|
|
status := nodeList.Items[0].Status
|
|
nodeName := nodeList.Items[0].ObjectMeta.Name
|
|
|
|
framework.Logf("Getting configuration details for node %s", nodeName)
|
|
request := f.ClientSet.CoreV1().RESTClient().Get().Resource("nodes").Name(nodeName).SubResource("proxy").Suffix("configz")
|
|
rawbytes, err := request.DoRaw(ctx)
|
|
framework.ExpectNoError(err)
|
|
kubeletConfig, err := decodeConfigz(rawbytes)
|
|
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
|
|
}
|
|
|
|
// modified from https://github.com/kubernetes/kubernetes/blob/master/test/e2e/framework/kubelet/config.go#L110
|
|
// the proxy version was causing and non proxy used a value that isn't set by e2e
|
|
func decodeConfigz(contentsBytes []byte) (*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{}
|
|
|
|
err := json.Unmarshal(contentsBytes, &configz)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
scheme, _, err := kubeletconfigscheme.NewSchemeAndCodecs()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = scheme.Convert(&configz.ComponentConfig, &kubeCfg, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &kubeCfg, nil
|
|
}
|