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757647786d
The modernize forvar rule was applied. There are more details in this blog post: https://go.dev/blog/loopvar-preview
734 lines
25 KiB
Go
734 lines
25 KiB
Go
/*
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Copyright 2023 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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"crypto/tls"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/onsi/ginkgo/v2"
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"github.com/onsi/gomega"
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v1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/cli-runtime/pkg/printers"
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"k8s.io/kubernetes/pkg/cluster/ports"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/test/e2e/feature"
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"k8s.io/kubernetes/test/e2e/framework"
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testutils "k8s.io/kubernetes/test/utils"
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imageutils "k8s.io/kubernetes/test/utils/image"
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admissionapi "k8s.io/pod-security-admission/api"
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)
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var _ = SIGDescribe(feature.StandaloneMode, framework.WithFeatureGate(features.EnvFiles), func() {
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f := framework.NewDefaultFramework("static-pod-envfiles")
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f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
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ginkgo.Context("when creating a static pod with EnvFiles", func() {
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var ns, podPath, staticPodName string
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ginkgo.It("the pod should be running and consume variables", func(ctx context.Context) {
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ns = f.Namespace.Name
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staticPodName = "static-pod-envfiles-" + string(uuid.NewUUID())
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podPath = kubeletCfg.StaticPodPath
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podSpec := &v1.Pod{
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TypeMeta: metav1.TypeMeta{
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Kind: "Pod",
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APIVersion: "v1",
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},
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ObjectMeta: metav1.ObjectMeta{
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Name: staticPodName,
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Namespace: ns,
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},
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{
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{
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Name: "setup-envfile",
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Image: imageutils.GetE2EImage(imageutils.BusyBox),
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Command: []string{"sh", "-c", `echo CONFIG_1=\'value1\' > /data/config.env && echo CONFIG_2=\'value2\' >> /data/config.env`},
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "config",
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MountPath: "/data",
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},
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},
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},
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},
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Containers: []v1.Container{
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{
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Name: "use-envfile",
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Image: imageutils.GetE2EImage(imageutils.BusyBox),
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Command: []string{"sh", "-c", "env | grep -E '(CONFIG_1|CONFIG_2)' | sort"},
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Env: []v1.EnvVar{
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{
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Name: "CONFIG_1",
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ValueFrom: &v1.EnvVarSource{
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FileKeyRef: &v1.FileKeySelector{
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VolumeName: "config",
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Path: "config.env",
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Key: "CONFIG_1",
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},
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},
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},
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{
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Name: "CONFIG_2",
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ValueFrom: &v1.EnvVarSource{
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FileKeyRef: &v1.FileKeySelector{
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VolumeName: "config",
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Path: "config.env",
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Key: "CONFIG_2",
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},
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},
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},
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},
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},
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},
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RestartPolicy: v1.RestartPolicyNever,
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Volumes: []v1.Volume{
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{
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Name: "config",
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VolumeSource: v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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},
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},
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},
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},
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}
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err := scheduleStaticPod(podPath, staticPodName, ns, podSpec)
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framework.ExpectNoError(err)
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gomega.Eventually(ctx, func(ctx context.Context) error {
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pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if err != nil {
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return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
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}
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if pod.Status.Phase == v1.PodSucceeded {
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return nil
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}
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if pod.Status.Phase == v1.PodFailed {
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logs, err := getPodLogsFromStandaloneKubelet(ctx, ns, staticPodName, "use-envfile")
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if err != nil {
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framework.Logf("failed to get logs on pod failure: %v", err)
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}
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return fmt.Errorf("pod (%v/%v) failed, logs: %s", ns, staticPodName, logs)
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}
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return fmt.Errorf("pod (%v/%v) is not succeeded, phase: %s", ns, staticPodName, pod.Status.Phase)
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}, f.Timeouts.PodStart, time.Second*5).Should(gomega.Succeed())
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logs, err := getPodLogsFromStandaloneKubelet(ctx, ns, staticPodName, "use-envfile")
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framework.ExpectNoError(err)
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gomega.Expect(logs).To(gomega.ContainSubstring("CONFIG_1=value1"))
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gomega.Expect(logs).To(gomega.ContainSubstring("CONFIG_2=value2"))
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})
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ginkgo.AfterEach(func(ctx context.Context) {
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ginkgo.By(fmt.Sprintf("delete the static pod (%v/%v)", ns, staticPodName))
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err := deleteStaticPod(podPath, staticPodName, ns)
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framework.ExpectNoError(err)
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ginkgo.By(fmt.Sprintf("wait for pod to disappear (%v/%v)", ns, staticPodName))
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gomega.Eventually(ctx, func(ctx context.Context) error {
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_, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if apierrors.IsNotFound(err) {
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return nil
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}
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return fmt.Errorf("pod (%v/%v) still exists", ns, staticPodName)
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}).Should(gomega.Succeed())
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})
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})
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})
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var _ = SIGDescribe(feature.StandaloneMode, func() {
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f := framework.NewDefaultFramework("static-pod")
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f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
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ginkgo.Context("when creating a static pod", func() {
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var ns, podPath, staticPodName string
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ginkgo.It("the pod should be running", func(ctx context.Context) {
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ns = f.Namespace.Name
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staticPodName = "static-pod-" + string(uuid.NewUUID())
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podPath = kubeletCfg.StaticPodPath
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err := scheduleStaticPod(podPath, staticPodName, ns, createBasicStaticPodSpec(staticPodName, ns))
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framework.ExpectNoError(err)
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gomega.Eventually(ctx, func(ctx context.Context) error {
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pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if err != nil {
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return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
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}
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isReady, err := testutils.PodRunningReady(pod)
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if err != nil {
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return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
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}
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if !isReady {
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return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
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}
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return nil
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}, f.Timeouts.PodStart, time.Second*5).Should(gomega.BeNil())
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})
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ginkgo.It("the pod with the port on host network should be running and can be upgraded when the container name changes", func(ctx context.Context) {
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ns = f.Namespace.Name
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staticPodName = "static-pod-" + string(uuid.NewUUID())
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podPath = kubeletCfg.StaticPodPath
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podSpec := createBasicStaticPodSpec(staticPodName, ns)
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podSpec.Spec.HostNetwork = true
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podSpec.Spec.Containers[0].Ports = []v1.ContainerPort{
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{
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Name: "tcp",
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ContainerPort: 4534,
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Protocol: v1.ProtocolTCP,
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},
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}
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err := scheduleStaticPod(podPath, staticPodName, ns, podSpec)
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framework.ExpectNoError(err)
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gomega.Eventually(ctx, func(ctx context.Context) error {
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pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if err != nil {
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return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
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}
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isReady, err := testutils.PodRunningReady(pod)
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if err != nil {
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return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
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}
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if !isReady {
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return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
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}
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return nil
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}, f.Timeouts.PodStart, time.Second*5).Should(gomega.BeNil())
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// Upgrade the pod
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podSpec.Spec.Containers[0].Name = "upgraded"
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err = scheduleStaticPod(podPath, staticPodName, ns, podSpec)
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framework.ExpectNoError(err)
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gomega.Eventually(ctx, func(ctx context.Context) error {
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pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if err != nil {
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return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
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}
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if pod.Spec.Containers[0].Name != "upgraded" {
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return fmt.Errorf("pod (%v/%v) is not upgraded", ns, staticPodName)
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}
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isReady, err := testutils.PodRunningReady(pod)
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if err != nil {
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return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
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}
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if !isReady {
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return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
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}
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return nil
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}, f.Timeouts.PodStart, time.Second*5).Should(gomega.BeNil())
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})
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// the test below is not working - pod update fails with the "Predicate NodePorts failed: node(s) didn't have free ports for the requested pod ports"
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// ginkgo.It("the pod with the port on host network should be running and can be upgraded when namespace of a Pod changes", func(ctx context.Context) {
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// ns = f.Namespace.Name
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// staticPodName = "static-pod-" + string(uuid.NewUUID())
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// podPath = kubeletCfg.StaticPodPath
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// podSpec := createBasicStaticPodSpec(staticPodName, ns)
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// podSpec.Spec.HostNetwork = true
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// podSpec.Spec.Containers[0].Ports = []v1.ContainerPort{
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// {
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// Name: "tcp",
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// ContainerPort: 4534,
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// Protocol: v1.ProtocolTCP,
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// },
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// }
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// err := scheduleStaticPod(podPath, staticPodName, ns, podSpec)
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// framework.ExpectNoError(err)
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// gomega.Eventually(ctx, func(ctx context.Context) error {
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// pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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// if err != nil {
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// return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
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// }
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// isReady, err := testutils.PodRunningReady(pod)
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// if err != nil {
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// return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
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// }
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// if !isReady {
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// return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
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// }
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// return nil
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// }, f.Timeouts.PodStart, time.Second*5).Should(gomega.BeNil())
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// // Upgrade the pod
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// upgradedNs := ns + "-upgraded"
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// podSpec.Namespace = upgradedNs
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// // use old namespace as it uses ns in a file name
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// err = scheduleStaticPod(podPath, staticPodName, ns, podSpec)
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// framework.ExpectNoError(err)
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// gomega.Eventually(ctx, func(ctx context.Context) error {
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// pod, err := getPodFromStandaloneKubelet(ctx, upgradedNs, staticPodName)
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// if err != nil {
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// return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", upgradedNs, staticPodName, err)
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// }
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// isReady, err := testutils.PodRunningReady(pod)
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// if err != nil {
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// return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", upgradedNs, staticPodName, err)
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// }
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// if !isReady {
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// return fmt.Errorf("pod (%v/%v) is not running", upgradedNs, staticPodName)
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// }
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// return nil
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// }, f.Timeouts.PodStart, time.Second*5).Should(gomega.BeNil())
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// })
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ginkgo.AfterEach(func(ctx context.Context) {
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ginkgo.By(fmt.Sprintf("delete the static pod (%v/%v)", ns, staticPodName))
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err := deleteStaticPod(podPath, staticPodName, ns)
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framework.ExpectNoError(err)
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ginkgo.By(fmt.Sprintf("wait for pod to disappear (%v/%v)", ns, staticPodName))
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gomega.Eventually(ctx, func(ctx context.Context) error {
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_, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
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if apierrors.IsNotFound(err) {
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return nil
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}
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return fmt.Errorf("pod (%v/%v) still exists", ns, staticPodName)
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}).Should(gomega.Succeed())
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})
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f.Context("when the static pod has init container", f.WithSerial(), func() {
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f.It("should be ready after init container is removed and kubelet restarts", func(ctx context.Context) {
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ginkgo.By("create static pod")
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staticPod := &v1.Pod{
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TypeMeta: metav1.TypeMeta{
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Kind: "Pod",
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APIVersion: "v1",
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},
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ObjectMeta: metav1.ObjectMeta{
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Name: "static",
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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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Name: "main",
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Image: imageutils.GetE2EImage(imageutils.Pause),
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},
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},
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InitContainers: []v1.Container{
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{
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Name: "init",
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Image: imageutils.GetE2EImage(imageutils.BusyBox),
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Command: []string{"ls"},
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},
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},
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},
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}
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staticPodName = staticPod.Name
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podPath = kubeletCfg.StaticPodPath
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ns = staticPod.Namespace
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err := scheduleStaticPod(podPath, staticPod.Name, ns, staticPod)
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framework.ExpectNoError(err)
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var initCtrID string
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var startTime *metav1.Time
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ginkgo.By("wait for the mirror pod to be updated")
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gomega.Eventually(ctx, func(g gomega.Gomega) {
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pod, err := getPodFromStandaloneKubelet(ctx, staticPod.Namespace, staticPod.Name)
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g.Expect(err).Should(gomega.Succeed())
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g.Expect(pod.Status.InitContainerStatuses).To(gomega.HaveLen(1))
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cstatus := pod.Status.InitContainerStatuses[0]
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// Wait until the init container is terminated.
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g.Expect(cstatus.State.Terminated).NotTo(gomega.BeNil())
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g.Expect(cstatus.State.Terminated.ContainerID).NotTo(gomega.BeEmpty())
|
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initCtrID = cstatus.ContainerID
|
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startTime = pod.Status.StartTime
|
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}, 2*time.Minute, 5*time.Second).Should(gomega.Succeed())
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ginkgo.By("remove init container")
|
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removeInitContainer(ctx, initCtrID)
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|
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ginkgo.By("restart kubelet")
|
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restartKubelet(ctx, true)
|
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gomega.Eventually(ctx, func() bool {
|
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return kubeletHealthCheck(kubeletHealthCheckURL)
|
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}, f.Timeouts.PodStart, f.Timeouts.Poll).Should(gomega.BeTrueBecause("kubelet should be started"))
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|
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ginkgo.By("wait for the mirror pod to be updated")
|
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gomega.Eventually(ctx, func(g gomega.Gomega) {
|
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pod, err := getPodFromStandaloneKubelet(ctx, staticPod.Namespace, staticPod.Name)
|
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g.Expect(pod.Status.StartTime).NotTo(gomega.Equal(startTime))
|
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g.Expect(err).Should(gomega.Succeed())
|
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g.Expect(pod.Status.InitContainerStatuses).To(gomega.HaveLen(1))
|
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cstatus := pod.Status.InitContainerStatuses[0]
|
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// Init container should be completed.
|
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g.Expect(cstatus.State.Terminated).NotTo(gomega.BeNil())
|
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g.Expect(cstatus.State.Terminated.Reason).To(gomega.Equal("Completed"))
|
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g.Expect(cstatus.State.Terminated.ExitCode).To(gomega.BeZero())
|
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}, 2*time.Minute, 5*time.Second).Should(gomega.Succeed())
|
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})
|
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})
|
|
})
|
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})
|
|
|
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var _ = SIGDescribe("Pod Extended (RestartAllContainers)",
|
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feature.StandaloneMode,
|
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framework.WithFeatureGate(features.ContainerRestartRules),
|
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framework.WithFeatureGate(features.RestartAllContainersOnContainerExits),
|
|
func() {
|
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f := framework.NewDefaultFramework("static-pod")
|
|
f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
|
|
ginkgo.It("should restart all containers on regular container exit", func(ctx context.Context) {
|
|
ns := f.Namespace.Name
|
|
staticPodName := "static-pod-" + string(uuid.NewUUID())
|
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podPath := kubeletCfg.StaticPodPath
|
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var (
|
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containerRestartPolicyAlways = v1.ContainerRestartPolicyAlways
|
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containerRestartPolicyNever = v1.ContainerRestartPolicyNever
|
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)
|
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restartAllContainersRules := []v1.ContainerRestartRule{
|
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{
|
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Action: v1.ContainerRestartRuleActionRestartAllContainers,
|
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ExitCodes: &v1.ContainerRestartRuleOnExitCodes{
|
|
Operator: v1.ContainerRestartRuleOnExitCodesOpIn,
|
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Values: []int32{42},
|
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},
|
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},
|
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}
|
|
pod := &v1.Pod{
|
|
TypeMeta: metav1.TypeMeta{
|
|
Kind: "Pod",
|
|
APIVersion: "v1",
|
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},
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: staticPodName,
|
|
Namespace: ns,
|
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},
|
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Spec: v1.PodSpec{
|
|
RestartPolicy: v1.RestartPolicyNever,
|
|
InitContainers: []v1.Container{
|
|
{
|
|
Name: "init",
|
|
Image: imageutils.GetE2EImage(imageutils.BusyBox),
|
|
Command: []string{"/bin/sh", "-c", "exit 0"},
|
|
},
|
|
{
|
|
Name: "sidecar",
|
|
Image: imageutils.GetE2EImage(imageutils.BusyBox),
|
|
Command: []string{"/bin/sh", "-c", "sleep 10000"},
|
|
RestartPolicy: &containerRestartPolicyAlways,
|
|
},
|
|
},
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: "source-container",
|
|
Image: imageutils.GetE2EImage(imageutils.BusyBox),
|
|
Command: []string{"/bin/sh", "-c", "sleep 60; exit 42"},
|
|
RestartPolicy: &containerRestartPolicyNever,
|
|
RestartPolicyRules: restartAllContainersRules,
|
|
},
|
|
{
|
|
Name: "regular",
|
|
Image: imageutils.GetE2EImage(imageutils.BusyBox),
|
|
Command: []string{"/bin/sh", "-c", "sleep 10000"},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
err := scheduleStaticPod(podPath, staticPodName, ns, pod)
|
|
framework.ExpectNoError(err)
|
|
|
|
gomega.Eventually(ctx, func(ctx context.Context) error {
|
|
pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
|
|
if err != nil {
|
|
return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
|
|
}
|
|
|
|
isReady, err := testutils.PodRunningReady(pod)
|
|
if err != nil {
|
|
return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
|
|
}
|
|
if !isReady {
|
|
return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
|
|
}
|
|
return nil
|
|
}, f.Timeouts.PodStart, f.Timeouts.Poll).Should(gomega.Succeed())
|
|
|
|
gomega.Eventually(ctx, func(ctx context.Context) error {
|
|
pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
|
|
if err != nil {
|
|
return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
|
|
}
|
|
for _, c := range pod.Status.InitContainerStatuses {
|
|
if c.RestartCount == 0 {
|
|
return fmt.Errorf("init container %v has not restarted", c.Name)
|
|
}
|
|
}
|
|
for _, c := range pod.Status.ContainerStatuses {
|
|
if c.RestartCount == 0 {
|
|
return fmt.Errorf("container %v has not restarted", c.Name)
|
|
}
|
|
}
|
|
return nil
|
|
}, 10*time.Minute, f.Timeouts.Poll).Should(gomega.Succeed())
|
|
})
|
|
})
|
|
|
|
func createBasicStaticPodSpec(name, namespace string) *v1.Pod {
|
|
podSpec := &v1.Pod{
|
|
TypeMeta: metav1.TypeMeta{
|
|
Kind: "Pod",
|
|
APIVersion: "v1",
|
|
},
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: name,
|
|
Namespace: namespace,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
RestartPolicy: v1.RestartPolicyAlways,
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: "regular1",
|
|
Image: imageutils.GetE2EImage(imageutils.BusyBox),
|
|
Command: []string{
|
|
"/bin/sh", "-c", "touch /tmp/healthy; sleep 10000",
|
|
},
|
|
Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
v1.ResourceMemory: resource.MustParse("15Mi"),
|
|
},
|
|
Limits: v1.ResourceList{
|
|
v1.ResourceMemory: resource.MustParse("15Mi"),
|
|
},
|
|
},
|
|
ReadinessProbe: &v1.Probe{
|
|
InitialDelaySeconds: 2,
|
|
TimeoutSeconds: 2,
|
|
ProbeHandler: v1.ProbeHandler{
|
|
Exec: &v1.ExecAction{
|
|
Command: []string{"/bin/sh", "-c", "cat /tmp/healthy"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
return podSpec
|
|
}
|
|
|
|
func scheduleStaticPod(dir, name, namespace string, podSpec *v1.Pod) error {
|
|
file := staticPodPath(dir, name, namespace)
|
|
f, err := os.OpenFile(file, os.O_RDWR|os.O_TRUNC|os.O_CREATE, 0666)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
y := printers.YAMLPrinter{}
|
|
y.PrintObj(podSpec, f)
|
|
|
|
return nil
|
|
}
|
|
|
|
func getPodFromStandaloneKubelet(ctx context.Context, podNamespace string, podName string) (*v1.Pod, error) {
|
|
endpoint := fmt.Sprintf("http://127.0.0.1:%d/pods", ports.KubeletReadOnlyPort)
|
|
// TODO: we do not need TLS and bearer token for this test
|
|
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.Set("Authorization", fmt.Sprintf("Bearer %s", framework.TestContext.BearerToken))
|
|
req.Header.Add("Accept", "application/json")
|
|
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
framework.Logf("Failed to get /pods: %v", err)
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != 200 {
|
|
framework.Logf("/pods response status not 200. Response was: %+v", resp)
|
|
return nil, fmt.Errorf("/pods response was not 200: %v", err)
|
|
}
|
|
|
|
respBody, err := io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("/pods response was unable to be read: %v", err)
|
|
}
|
|
|
|
pods, err := decodePods(respBody)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to decode /pods: %v", err)
|
|
}
|
|
|
|
for _, p := range pods.Items {
|
|
// Static pods has a node name suffix so comparing as substring
|
|
if strings.Contains(p.Name, podName) && strings.Contains(p.Namespace, podNamespace) {
|
|
return &p, nil
|
|
}
|
|
}
|
|
|
|
return nil, apierrors.NewNotFound(schema.GroupResource{Resource: "pods"}, podName)
|
|
}
|
|
|
|
func getPodLogsFromStandaloneKubelet(ctx context.Context, podNamespace string, podName string, containerName string) (string, error) {
|
|
pod, err := getPodFromStandaloneKubelet(ctx, podNamespace, podName)
|
|
if err != nil {
|
|
return "", fmt.Errorf("failed to get pod %s/%s: %w", podNamespace, podName, err)
|
|
}
|
|
|
|
logCRIDir := "/var/log/pods"
|
|
podLogDir := filepath.Join(logCRIDir, fmt.Sprintf("%s_%s_%s", pod.Namespace, pod.Name, pod.UID))
|
|
logFile := filepath.Join(podLogDir, containerName, "0.log")
|
|
|
|
var content []byte
|
|
err = wait.PollUntilContextTimeout(ctx, time.Second, time.Minute, true, func(ctx context.Context) (bool, error) {
|
|
var errRead error
|
|
content, errRead = os.ReadFile(logFile)
|
|
if errRead != nil {
|
|
if os.IsNotExist(errRead) {
|
|
return false, nil
|
|
}
|
|
return false, errRead
|
|
}
|
|
return true, nil
|
|
})
|
|
|
|
if err != nil {
|
|
return "", fmt.Errorf("could not read log file %s: %w", logFile, err)
|
|
}
|
|
|
|
return string(content), nil
|
|
}
|
|
|
|
// Decodes the http response from /configz and returns a kubeletconfig.KubeletConfiguration (internal type).
|
|
func decodePods(respBody []byte) (*v1.PodList, error) {
|
|
// This hack because /pods reports the following structure:
|
|
// {"kind":"PodList","apiVersion":"v1","metadata":{},"items":[{"metadata":{"name":"kube-dns-autoscaler-758c4689b9-htpqj","generateName":"kube-dns-autoscaler-758c4689b9-",
|
|
|
|
var pods v1.PodList
|
|
err := json.Unmarshal(respBody, &pods)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &pods, nil
|
|
}
|
|
|
|
var _ = SIGDescribe(feature.StandaloneMode, framework.WithSerial(), func() {
|
|
f := framework.NewDefaultFramework("static-pod-serial")
|
|
f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
|
|
ginkgo.Context("when creating a static pod and restarting kubelet", func() {
|
|
var ns, podPath, staticPodName string
|
|
|
|
ginkgo.BeforeEach(func() {
|
|
ns = f.Namespace.Name
|
|
staticPodName = "static-pod-" + string(uuid.NewUUID())
|
|
podPath = kubeletCfg.StaticPodPath
|
|
})
|
|
|
|
ginkgo.AfterEach(func(ctx context.Context) {
|
|
ginkgo.By(fmt.Sprintf("delete the static pod (%v/%v)", ns, staticPodName))
|
|
err := deleteStaticPod(podPath, staticPodName, ns)
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By(fmt.Sprintf("wait for pod to disappear (%v/%v)", ns, staticPodName))
|
|
gomega.Eventually(ctx, func(ctx context.Context) error {
|
|
_, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
|
|
|
|
if apierrors.IsNotFound(err) {
|
|
return nil
|
|
}
|
|
return fmt.Errorf("pod (%v/%v) still exists", ns, staticPodName)
|
|
}).Should(gomega.Succeed())
|
|
})
|
|
|
|
ginkgo.It("the pod should be running and kubelet not panic", func(ctx context.Context) {
|
|
err := scheduleStaticPod(podPath, staticPodName, ns, createBasicStaticPodSpec(staticPodName, ns))
|
|
framework.ExpectNoError(err)
|
|
|
|
ginkgo.By("Waiting for the pod to be running")
|
|
gomega.Eventually(ctx, func(ctx context.Context) error {
|
|
pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
|
|
if err != nil {
|
|
return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
|
|
}
|
|
|
|
isReady, err := testutils.PodRunningReady(pod)
|
|
if err != nil {
|
|
return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
|
|
}
|
|
if !isReady {
|
|
return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
|
|
}
|
|
return nil
|
|
}, f.Timeouts.PodStart, time.Second*5).Should(gomega.Succeed())
|
|
|
|
ginkgo.By("restarting the kubelet")
|
|
restartKubelet(ctx, true)
|
|
|
|
gomega.Eventually(ctx, func() bool {
|
|
return kubeletHealthCheck(kubeletHealthCheckURL)
|
|
}, f.Timeouts.PodStart, f.Timeouts.Poll).Should(gomega.BeTrueBecause("kubelet should be started"))
|
|
|
|
ginkgo.By("ensuring that pod is running")
|
|
gomega.Eventually(ctx, func(ctx context.Context) error {
|
|
pod, err := getPodFromStandaloneKubelet(ctx, ns, staticPodName)
|
|
if err != nil {
|
|
return fmt.Errorf("error getting pod(%v/%v) from standalone kubelet: %w", ns, staticPodName, err)
|
|
}
|
|
isReady, err := testutils.PodRunningReady(pod)
|
|
if err != nil {
|
|
return fmt.Errorf("error checking if pod (%v/%v) is running ready: %w", ns, staticPodName, err)
|
|
}
|
|
if !isReady {
|
|
return fmt.Errorf("pod (%v/%v) is not running", ns, staticPodName)
|
|
}
|
|
return nil
|
|
}, f.Timeouts.PodStart, time.Second*30).Should(gomega.Succeed())
|
|
})
|
|
})
|
|
})
|