Merge pull request #71892 from fatsheep9146/log_path_test

add test for CRI log path

test/e2e_node/log_path_test.go

@@ -17,28 +17,94 @@ limitations under the License.
 package e2e_node
 
 import (
+	. "github.com/onsi/ginkgo"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/kubernetes/pkg/kubelet"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
 	"k8s.io/kubernetes/test/e2e/framework"
-
-	. "github.com/onsi/ginkgo"
 )
 
 const (
 	logString        = "This is the expected log content of this node e2e test"
-
+	logContainerName = "logger"
-	logPodName    = "logger-pod"
-	logContName   = "logger-container"
-	checkPodName  = "checker-pod"
-	checkContName = "checker-container"
 )
 
 var _ = framework.KubeDescribe("ContainerLogPath [NodeConformance]", func() {
 	f := framework.NewDefaultFramework("kubelet-container-log-path")
+	var podClient *framework.PodClient
+
 	Describe("Pod with a container", func() {
 		Context("printed log to stdout", func() {
+			makeLogPod := func(podName, log string) *v1.Pod {
+				return &v1.Pod{
+					ObjectMeta: metav1.ObjectMeta{
+						Name: podName,
+					},
+					Spec: v1.PodSpec{
+						// this pod is expected to exit successfully
+						RestartPolicy: v1.RestartPolicyNever,
+						Containers: []v1.Container{
+							{
+								Image:   busyboxImage,
+								Name:    logContainerName,
+								Command: []string{"sh", "-c", "echo " + log},
+							},
+						},
+					},
+				}
+			}
+
+			makeLogCheckPod := func(podName, log, expectedLogPath string) *v1.Pod {
+				hostPathType := new(v1.HostPathType)
+				*hostPathType = v1.HostPathType(string(v1.HostPathFileOrCreate))
+
+				return &v1.Pod{
+					ObjectMeta: metav1.ObjectMeta{
+						Name: podName,
+					},
+					Spec: v1.PodSpec{
+						// this pod is expected to exit successfully
+						RestartPolicy: v1.RestartPolicyNever,
+						Containers: []v1.Container{
+							{
+								Image: busyboxImage,
+								Name:  podName,
+								// If we find expected log file and contains right content, exit 0
+								// else, keep checking until test timeout
+								Command: []string{"sh", "-c", "while true; do if [ -e " + expectedLogPath + " ] && grep -q " + log + " " + expectedLogPath + "; then exit 0; fi; sleep 1; done"},
+								VolumeMounts: []v1.VolumeMount{
+									{
+										Name: "logdir",
+										// mount ContainerLogsDir to the same path in container
+										MountPath: expectedLogPath,
+										ReadOnly:  true,
+									},
+								},
+							},
+						},
+						Volumes: []v1.Volume{
+							{
+								Name: "logdir",
+								VolumeSource: v1.VolumeSource{
+									HostPath: &v1.HostPathVolumeSource{
+										Path: expectedLogPath,
+										Type: hostPathType,
+									},
+								},
+							},
+						},
+					},
+				}
+			}
+
+			createAndWaitPod := func(pod *v1.Pod) error {
+				podClient.Create(pod)
+				return framework.WaitForPodSuccessInNamespace(f.ClientSet, pod.Name, f.Namespace.Name)
+			}
+
+			var logPodName string
 			BeforeEach(func() {
 				if framework.TestContext.ContainerRuntime == "docker" {
 					// Container Log Path support requires JSON logging driver.
@@ -62,86 +128,43 @@ var _ = framework.KubeDescribe("ContainerLogPath [NodeConformance]", func() {
 						framework.Skipf("Skipping because Docker daemon is running with SELinux support enabled")
 					}
 				}
+
+				podClient = f.PodClient()
+				logPodName = "log-pod-" + string(uuid.NewUUID())
+				err := createAndWaitPod(makeLogPod(logPodName, logString))
+				framework.ExpectNoError(err, "Failed waiting for pod: %s to enter success state", logPodName)
 			})
 			It("should print log to correct log path", func() {
-				podClient := f.PodClient()
-				ns := f.Namespace.Name
 
-				logDirVolumeName := "log-dir-vol"
 				logDir := kubelet.ContainerLogsDir
 
-				logPod := &v1.Pod{
-					ObjectMeta: metav1.ObjectMeta{
-						Name: logPodName,
-					},
-					Spec: v1.PodSpec{
-						// this pod is expected to exit successfully
-						RestartPolicy: v1.RestartPolicyNever,
-						Containers: []v1.Container{
-							{
-								Image:   busyboxImage,
-								Name:    logContName,
-								Command: []string{"sh", "-c", "echo " + logString},
-							},
-						},
-					},
-				}
-
-				podClient.Create(logPod)
-				err := framework.WaitForPodSuccessInNamespace(f.ClientSet, logPodName, ns)
-				framework.ExpectNoError(err, "Failed waiting for pod: %s to enter success state", logPodName)
-
 				// get containerID from created Pod
 				createdLogPod, err := podClient.Get(logPodName, metav1.GetOptions{})
-				logConID := kubecontainer.ParseContainerID(createdLogPod.Status.ContainerStatuses[0].ContainerID)
+				logContainerID := kubecontainer.ParseContainerID(createdLogPod.Status.ContainerStatuses[0].ContainerID)
 				framework.ExpectNoError(err, "Failed to get pod: %s", logPodName)
 
-				expectedlogFile := logDir + "/" + logPodName + "_" + ns + "_" + logContName + "-" + logConID.ID + ".log"
+				// build log file path
+				expectedlogFile := logDir + "/" + logPodName + "_" + f.Namespace.Name + "_" + logContainerName + "-" + logContainerID.ID + ".log"
 
-				hostPathType := new(v1.HostPathType)
+				logCheckPodName := "log-check-" + string(uuid.NewUUID())
-				*hostPathType = v1.HostPathType(string(v1.HostPathFileOrCreate))
+				err = createAndWaitPod(makeLogCheckPod(logCheckPodName, logString, expectedlogFile))
+				framework.ExpectNoError(err, "Failed waiting for pod: %s to enter success state", logCheckPodName)
+			})
 
-				checkPod := &v1.Pod{
+			It("should print log to correct cri log path", func() {
-					ObjectMeta: metav1.ObjectMeta{
-						Name: checkPodName,
-					},
-					Spec: v1.PodSpec{
-						// this pod is expected to exit successfully
-						RestartPolicy: v1.RestartPolicyNever,
-						Containers: []v1.Container{
-							{
-								Image: busyboxImage,
-								Name:  checkContName,
-								// If we find expected log file and contains right content, exit 0
-								// else, keep checking until test timeout
-								Command: []string{"sh", "-c", "while true; do if [ -e " + expectedlogFile + " ] && grep -q " + logString + " " + expectedlogFile + "; then exit 0; fi; sleep 1; done"},
-								VolumeMounts: []v1.VolumeMount{
-									{
-										Name: logDirVolumeName,
-										// mount ContainerLogsDir to the same path in container
-										MountPath: expectedlogFile,
-										ReadOnly:  true,
-									},
-								},
-							},
-						},
-						Volumes: []v1.Volume{
-							{
-								Name: logDirVolumeName,
-								VolumeSource: v1.VolumeSource{
-									HostPath: &v1.HostPathVolumeSource{
-										Path: expectedlogFile,
-										Type: hostPathType,
-									},
-								},
-							},
-						},
-					},
-				}
 
-				podClient.Create(checkPod)
+				logCRIDir := "/var/log/pods"
-				err = framework.WaitForPodSuccessInNamespace(f.ClientSet, checkPodName, ns)
+
-				framework.ExpectNoError(err, "Failed waiting for pod: %s to enter success state", checkPodName)
+				// get podID from created Pod
+				createdLogPod, err := podClient.Get(logPodName, metav1.GetOptions{})
+				podID := string(createdLogPod.UID)
+
+				// build log cri file path
+				expectedCRILogFile := logCRIDir + "/" + podID + "/" + logContainerName + "/0.log"
+
+				logCRICheckPodName := "log-cri-check-" + string(uuid.NewUUID())
+				err = createAndWaitPod(makeLogCheckPod(logCRICheckPodName, logString, expectedCRILogFile))
+				framework.ExpectNoError(err, "Failed waiting for pod: %s to enter success state", logCRICheckPodName)
 			})
 		})
 	})