mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 23:40:03 +00:00
207 lines
7.4 KiB
Go
207 lines
7.4 KiB
Go
/*
|
|
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 (
|
|
goerrors "errors"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"time"
|
|
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/api/errors"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
"k8s.io/apimachinery/pkg/util/uuid"
|
|
clientset "k8s.io/client-go/kubernetes"
|
|
"k8s.io/kubernetes/test/e2e/framework"
|
|
|
|
"github.com/onsi/ginkgo"
|
|
"github.com/onsi/gomega"
|
|
imageutils "k8s.io/kubernetes/test/utils/image"
|
|
)
|
|
|
|
var _ = framework.KubeDescribe("MirrorPod", func() {
|
|
f := framework.NewDefaultFramework("mirror-pod")
|
|
ginkgo.Context("when create a mirror pod ", func() {
|
|
var ns, podPath, staticPodName, mirrorPodName string
|
|
ginkgo.BeforeEach(func() {
|
|
ns = f.Namespace.Name
|
|
staticPodName = "static-pod-" + string(uuid.NewUUID())
|
|
mirrorPodName = staticPodName + "-" + framework.TestContext.NodeName
|
|
|
|
podPath = framework.TestContext.KubeletConfig.StaticPodPath
|
|
|
|
ginkgo.By("create the static pod")
|
|
err := createStaticPod(podPath, staticPodName, ns,
|
|
imageutils.GetE2EImage(imageutils.Nginx), v1.RestartPolicyAlways)
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("wait for the mirror pod to be running")
|
|
gomega.Eventually(func() error {
|
|
return checkMirrorPodRunning(f.ClientSet, mirrorPodName, ns)
|
|
}, 2*time.Minute, time.Second*4).Should(gomega.BeNil())
|
|
})
|
|
/*
|
|
Release : v1.9
|
|
Testname: Mirror Pod, update
|
|
Description: Updating a static Pod MUST recreate an updated mirror Pod. Create a static pod, verify that a mirror pod is created. Update the static pod by changing the container image, the mirror pod MUST be re-created and updated with the new image.
|
|
*/
|
|
ginkgo.It("should be updated when static pod updated [NodeConformance]", func() {
|
|
ginkgo.By("get mirror pod uid")
|
|
pod, err := f.ClientSet.CoreV1().Pods(ns).Get(mirrorPodName, metav1.GetOptions{})
|
|
framework.ExpectNoError(err)
|
|
uid := pod.UID
|
|
|
|
ginkgo.By("update the static pod container image")
|
|
image := imageutils.GetPauseImageName()
|
|
err = createStaticPod(podPath, staticPodName, ns, image, v1.RestartPolicyAlways)
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("wait for the mirror pod to be updated")
|
|
gomega.Eventually(func() error {
|
|
return checkMirrorPodRecreatedAndRunning(f.ClientSet, mirrorPodName, ns, uid)
|
|
}, 2*time.Minute, time.Second*4).Should(gomega.BeNil())
|
|
|
|
ginkgo.By("check the mirror pod container image is updated")
|
|
pod, err = f.ClientSet.CoreV1().Pods(ns).Get(mirrorPodName, metav1.GetOptions{})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectEqual(len(pod.Spec.Containers), 1)
|
|
framework.ExpectEqual(pod.Spec.Containers[0].Image, image)
|
|
})
|
|
/*
|
|
Release : v1.9
|
|
Testname: Mirror Pod, delete
|
|
Description: When a mirror-Pod is deleted then the mirror pod MUST be re-created. Create a static pod, verify that a mirror pod is created. Delete the mirror pod, the mirror pod MUST be re-created and running.
|
|
*/
|
|
ginkgo.It("should be recreated when mirror pod gracefully deleted [NodeConformance]", func() {
|
|
ginkgo.By("get mirror pod uid")
|
|
pod, err := f.ClientSet.CoreV1().Pods(ns).Get(mirrorPodName, metav1.GetOptions{})
|
|
framework.ExpectNoError(err)
|
|
uid := pod.UID
|
|
|
|
ginkgo.By("delete the mirror pod with grace period 30s")
|
|
err = f.ClientSet.CoreV1().Pods(ns).Delete(mirrorPodName, metav1.NewDeleteOptions(30))
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("wait for the mirror pod to be recreated")
|
|
gomega.Eventually(func() error {
|
|
return checkMirrorPodRecreatedAndRunning(f.ClientSet, mirrorPodName, ns, uid)
|
|
}, 2*time.Minute, time.Second*4).Should(gomega.BeNil())
|
|
})
|
|
/*
|
|
Release : v1.9
|
|
Testname: Mirror Pod, force delete
|
|
Description: When a mirror-Pod is deleted, forcibly, then the mirror pod MUST be re-created. Create a static pod, verify that a mirror pod is created. Delete the mirror pod with delete wait time set to zero forcing immediate deletion, the mirror pod MUST be re-created and running.
|
|
*/
|
|
ginkgo.It("should be recreated when mirror pod forcibly deleted [NodeConformance]", func() {
|
|
ginkgo.By("get mirror pod uid")
|
|
pod, err := f.ClientSet.CoreV1().Pods(ns).Get(mirrorPodName, metav1.GetOptions{})
|
|
framework.ExpectNoError(err)
|
|
uid := pod.UID
|
|
|
|
ginkgo.By("delete the mirror pod with grace period 0s")
|
|
err = f.ClientSet.CoreV1().Pods(ns).Delete(mirrorPodName, metav1.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("wait for the mirror pod to be recreated")
|
|
gomega.Eventually(func() error {
|
|
return checkMirrorPodRecreatedAndRunning(f.ClientSet, mirrorPodName, ns, uid)
|
|
}, 2*time.Minute, time.Second*4).Should(gomega.BeNil())
|
|
})
|
|
ginkgo.AfterEach(func() {
|
|
ginkgo.By("delete the static pod")
|
|
err := deleteStaticPod(podPath, staticPodName, ns)
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("wait for the mirror pod to disappear")
|
|
gomega.Eventually(func() error {
|
|
return checkMirrorPodDisappear(f.ClientSet, mirrorPodName, ns)
|
|
}, 2*time.Minute, time.Second*4).Should(gomega.BeNil())
|
|
})
|
|
})
|
|
})
|
|
|
|
func staticPodPath(dir, name, namespace string) string {
|
|
return filepath.Join(dir, namespace+"-"+name+".yaml")
|
|
}
|
|
|
|
func createStaticPod(dir, name, namespace, image string, restart v1.RestartPolicy) error {
|
|
template := `
|
|
apiVersion: v1
|
|
kind: Pod
|
|
metadata:
|
|
name: %s
|
|
namespace: %s
|
|
spec:
|
|
containers:
|
|
- name: test
|
|
image: %s
|
|
restartPolicy: %s
|
|
`
|
|
file := staticPodPath(dir, name, namespace)
|
|
podYaml := fmt.Sprintf(template, name, namespace, image, string(restart))
|
|
|
|
f, err := os.OpenFile(file, os.O_RDWR|os.O_TRUNC|os.O_CREATE, 0666)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
_, err = f.WriteString(podYaml)
|
|
return err
|
|
}
|
|
|
|
func deleteStaticPod(dir, name, namespace string) error {
|
|
file := staticPodPath(dir, name, namespace)
|
|
return os.Remove(file)
|
|
}
|
|
|
|
func checkMirrorPodDisappear(cl clientset.Interface, name, namespace string) error {
|
|
_, err := cl.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
|
|
if errors.IsNotFound(err) {
|
|
return nil
|
|
}
|
|
return goerrors.New("pod not disappear")
|
|
}
|
|
|
|
func checkMirrorPodRunning(cl clientset.Interface, name, namespace string) error {
|
|
pod, err := cl.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
|
|
if err != nil {
|
|
return fmt.Errorf("expected the mirror pod %q to appear: %v", name, err)
|
|
}
|
|
if pod.Status.Phase != v1.PodRunning {
|
|
return fmt.Errorf("expected the mirror pod %q to be running, got %q", name, pod.Status.Phase)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func checkMirrorPodRecreatedAndRunning(cl clientset.Interface, name, namespace string, oUID types.UID) error {
|
|
pod, err := cl.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
|
|
if err != nil {
|
|
return fmt.Errorf("expected the mirror pod %q to appear: %v", name, err)
|
|
}
|
|
if pod.UID == oUID {
|
|
return fmt.Errorf("expected the uid of mirror pod %q to be changed, got %q", name, pod.UID)
|
|
}
|
|
if pod.Status.Phase != v1.PodRunning {
|
|
return fmt.Errorf("expected the mirror pod %q to be running, got %q", name, pod.Status.Phase)
|
|
}
|
|
return nil
|
|
}
|