mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-30 21:30:16 +00:00
256 lines
8.2 KiB
Go
256 lines
8.2 KiB
Go
// +build linux
|
|
|
|
/*
|
|
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 (
|
|
"fmt"
|
|
"os/exec"
|
|
"path"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/api/resource"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
"k8s.io/apimachinery/pkg/util/uuid"
|
|
runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
|
|
"k8s.io/kubernetes/test/e2e/framework"
|
|
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
imageutils "k8s.io/kubernetes/test/utils/image"
|
|
)
|
|
|
|
func getOOMScoreForPid(pid int) (int, error) {
|
|
procfsPath := path.Join("/proc", strconv.Itoa(pid), "oom_score_adj")
|
|
out, err := exec.Command("sudo", "cat", procfsPath).CombinedOutput()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return strconv.Atoi(strings.TrimSpace(string(out)))
|
|
}
|
|
|
|
func validateOOMScoreAdjSetting(pid int, expectedOOMScoreAdj int) error {
|
|
oomScore, err := getOOMScoreForPid(pid)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get oom_score_adj for %d: %v", pid, err)
|
|
}
|
|
if expectedOOMScoreAdj != oomScore {
|
|
return fmt.Errorf("expected pid %d's oom_score_adj to be %d; found %d", pid, expectedOOMScoreAdj, oomScore)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func validateOOMScoreAdjSettingIsInRange(pid int, expectedMinOOMScoreAdj, expectedMaxOOMScoreAdj int) error {
|
|
oomScore, err := getOOMScoreForPid(pid)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get oom_score_adj for %d", pid)
|
|
}
|
|
if oomScore < expectedMinOOMScoreAdj {
|
|
return fmt.Errorf("expected pid %d's oom_score_adj to be >= %d; found %d", pid, expectedMinOOMScoreAdj, oomScore)
|
|
}
|
|
if oomScore < expectedMaxOOMScoreAdj {
|
|
return fmt.Errorf("expected pid %d's oom_score_adj to be < %d; found %d", pid, expectedMaxOOMScoreAdj, oomScore)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var _ = framework.KubeDescribe("Container Manager Misc [Serial]", func() {
|
|
f := framework.NewDefaultFramework("kubelet-container-manager")
|
|
Describe("Validate OOM score adjustments [NodeFeature:OOMScoreAdj]", func() {
|
|
Context("once the node is setup", func() {
|
|
It("container runtime's oom-score-adj should be -999", func() {
|
|
runtimePids, err := getPidsForProcess(framework.TestContext.ContainerRuntimeProcessName, framework.TestContext.ContainerRuntimePidFile)
|
|
Expect(err).To(BeNil(), "failed to get list of container runtime pids")
|
|
for _, pid := range runtimePids {
|
|
Eventually(func() error {
|
|
return validateOOMScoreAdjSetting(pid, -999)
|
|
}, 5*time.Minute, 30*time.Second).Should(BeNil())
|
|
}
|
|
})
|
|
It("Kubelet's oom-score-adj should be -999", func() {
|
|
kubeletPids, err := getPidsForProcess(kubeletProcessName, "")
|
|
Expect(err).To(BeNil(), "failed to get list of kubelet pids")
|
|
Expect(len(kubeletPids)).To(Equal(1), "expected only one kubelet process; found %d", len(kubeletPids))
|
|
Eventually(func() error {
|
|
return validateOOMScoreAdjSetting(kubeletPids[0], -999)
|
|
}, 5*time.Minute, 30*time.Second).Should(BeNil())
|
|
})
|
|
Context("", func() {
|
|
It("pod infra containers oom-score-adj should be -998 and best effort container's should be 1000", func() {
|
|
// Take a snapshot of existing pause processes. These were
|
|
// created before this test, and may not be infra
|
|
// containers. They should be excluded from the test.
|
|
existingPausePIDs, err := getPidsForProcess("pause", "")
|
|
Expect(err).To(BeNil(), "failed to list all pause processes on the node")
|
|
existingPausePIDSet := sets.NewInt(existingPausePIDs...)
|
|
|
|
podClient := f.PodClient()
|
|
podName := "besteffort" + string(uuid.NewUUID())
|
|
podClient.Create(&v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Image: framework.ServeHostnameImage,
|
|
Name: podName,
|
|
},
|
|
},
|
|
},
|
|
})
|
|
var pausePids []int
|
|
By("checking infra container's oom-score-adj")
|
|
Eventually(func() error {
|
|
pausePids, err = getPidsForProcess("pause", "")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get list of pause pids: %v", err)
|
|
}
|
|
for _, pid := range pausePids {
|
|
if existingPausePIDSet.Has(pid) {
|
|
// Not created by this test. Ignore it.
|
|
continue
|
|
}
|
|
if err := validateOOMScoreAdjSetting(pid, -998); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}, 2*time.Minute, time.Second*4).Should(BeNil())
|
|
var shPids []int
|
|
By("checking besteffort container's oom-score-adj")
|
|
Eventually(func() error {
|
|
shPids, err = getPidsForProcess("serve_hostname", "")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get list of serve hostname process pids: %v", err)
|
|
}
|
|
if len(shPids) != 1 {
|
|
return fmt.Errorf("expected only one serve_hostname process; found %d", len(shPids))
|
|
}
|
|
return validateOOMScoreAdjSetting(shPids[0], 1000)
|
|
}, 2*time.Minute, time.Second*4).Should(BeNil())
|
|
})
|
|
// Log the running containers here to help debugging.
|
|
AfterEach(func() {
|
|
if CurrentGinkgoTestDescription().Failed {
|
|
By("Dump all running containers")
|
|
runtime, _, err := getCRIClient()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
containers, err := runtime.ListContainers(&runtimeapi.ContainerFilter{
|
|
State: &runtimeapi.ContainerStateValue{
|
|
State: runtimeapi.ContainerState_CONTAINER_RUNNING,
|
|
},
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
framework.Logf("Running containers:")
|
|
for _, c := range containers {
|
|
framework.Logf("%+v", c)
|
|
}
|
|
}
|
|
})
|
|
})
|
|
It("guaranteed container's oom-score-adj should be -998", func() {
|
|
podClient := f.PodClient()
|
|
podName := "guaranteed" + string(uuid.NewUUID())
|
|
podClient.Create(&v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Image: imageutils.GetE2EImage(imageutils.Nginx),
|
|
Name: podName,
|
|
Resources: v1.ResourceRequirements{
|
|
Limits: v1.ResourceList{
|
|
v1.ResourceCPU: resource.MustParse("100m"),
|
|
v1.ResourceMemory: resource.MustParse("50Mi"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
var (
|
|
ngPids []int
|
|
err error
|
|
)
|
|
Eventually(func() error {
|
|
ngPids, err = getPidsForProcess("nginx", "")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get list of nginx process pids: %v", err)
|
|
}
|
|
for _, pid := range ngPids {
|
|
if err := validateOOMScoreAdjSetting(pid, -998); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}, 2*time.Minute, time.Second*4).Should(BeNil())
|
|
|
|
})
|
|
It("burstable container's oom-score-adj should be between [2, 1000)", func() {
|
|
podClient := f.PodClient()
|
|
podName := "burstable" + string(uuid.NewUUID())
|
|
podClient.Create(&v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Image: imageutils.GetE2EImage(imageutils.TestWebserver),
|
|
Name: podName,
|
|
Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
v1.ResourceCPU: resource.MustParse("100m"),
|
|
v1.ResourceMemory: resource.MustParse("50Mi"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
var (
|
|
wsPids []int
|
|
err error
|
|
)
|
|
Eventually(func() error {
|
|
wsPids, err = getPidsForProcess("test-webserver", "")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get list of test-webserver process pids: %v", err)
|
|
}
|
|
for _, pid := range wsPids {
|
|
if err := validateOOMScoreAdjSettingIsInRange(pid, 2, 1000); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}, 2*time.Minute, time.Second*4).Should(BeNil())
|
|
|
|
// TODO: Test the oom-score-adj logic for burstable more accurately.
|
|
})
|
|
})
|
|
})
|
|
})
|