Add nethealth prepull container output to e2e run logs

cluster/saltbase/salt/e2e-image-puller/e2e-image-puller.manifest

@@ -35,6 +35,18 @@ spec:
       name: socket
     - mountPath: /usr/bin/docker
       name: docker
+  # Add a container that runs a health-check
+  - name: nethealth-check
+    resources:
+      requests:
+        cpu: 100m
+      limits:
+        cpu: 100m
+    image:  gcr.io/google_containers/kube-nethealth-amd64:1.0
+    command:
+    - /bin/sh
+    - -c
+    - "/usr/bin/nethealth || true"
   volumes:
   - hostPath:
       path: /var/run/docker.sock
@@ -44,3 +56,6 @@ spec:
     name: docker
   # This pod is really fire-and-forget.
   restartPolicy: Never
+  # This pod needs hostNetworking for true VM perf measurement as well as avoiding cbr0 issues
+  hostNetwork: true
+

test/e2e/e2e.go

@@ -140,6 +140,12 @@ var _ = ginkgo.SynchronizedBeforeSuite(func() []byte {
 		framework.Logf("WARNING: Image pulling pods failed to enter success in %v: %v", imagePrePullingTimeout, err)
 	}
 
+	// Dump the output of the nethealth containers only once per run
+	if framework.TestContext.DumpLogsOnFailure {
+		framework.Logf("Dumping network health container logs from all nodes")
+		framework.LogContainersInPodsWithLabels(c, api.NamespaceSystem, framework.ImagePullerLabels, "nethealth")
+	}
+
 	return nil
 
 }, func(data []byte) {

test/e2e/framework/framework.go

@@ -263,7 +263,7 @@ func (f *Framework) AfterEach() {
 	if CurrentGinkgoTestDescription().Failed && TestContext.DumpLogsOnFailure {
 		DumpAllNamespaceInfo(f.Client, f.Namespace.Name)
 		By(fmt.Sprintf("Dumping a list of prepulled images on each node"))
-		LogPodsWithLabels(f.Client, api.NamespaceSystem, ImagePullerLabels)
+		LogContainersInPodsWithLabels(f.Client, api.NamespaceSystem, ImagePullerLabels, "image-puller")
 		if f.federated {
 			// Print logs of federation control plane pods (federation-apiserver and federation-controller-manager)
 			LogPodsWithLabels(f.Client, "federation", map[string]string{"app": "federated-cluster"})

test/e2e/framework/util.go

@@ -663,8 +663,10 @@ func RunKubernetesServiceTestContainer(c *client.Client, repoRoot string, ns str
 	}
 }
 
-func kubectlLogPod(c *client.Client, pod api.Pod) {
+func kubectlLogPod(c *client.Client, pod api.Pod, containerNameSubstr string) {
 	for _, container := range pod.Spec.Containers {
+		if strings.Contains(container.Name, containerNameSubstr) {
+			// Contains() matches all strings if substr is empty
 			logs, err := GetPodLogs(c, pod.Namespace, pod.Name, container.Name)
 			if err != nil {
 				logs, err = getPreviousPodLogs(c, pod.Namespace, pod.Name, container.Name)
@@ -673,7 +675,8 @@ func kubectlLogPod(c *client.Client, pod api.Pod) {
 				}
 			}
 			By(fmt.Sprintf("Logs of %v/%v:%v on node %v", pod.Namespace, pod.Name, container.Name, pod.Spec.NodeName))
-		Logf(logs)
+			Logf("%s : STARTLOG\n%s\nENDLOG for container %v:%v:%v", containerNameSubstr, logs, pod.Namespace, pod.Name, container.Name)
+		}
 	}
 }
 
@@ -686,7 +689,7 @@ func LogFailedContainers(c *client.Client, ns string) {
 	Logf("Running kubectl logs on non-ready containers in %v", ns)
 	for _, pod := range podList.Items {
 		if res, err := PodRunningReady(&pod); !res || err != nil {
-			kubectlLogPod(c, pod)
+			kubectlLogPod(c, pod, "")
 		}
 	}
 }
@@ -699,7 +702,18 @@ func LogPodsWithLabels(c *client.Client, ns string, match map[string]string) {
 	}
 	Logf("Running kubectl logs on pods with labels %v in %v", match, ns)
 	for _, pod := range podList.Items {
-		kubectlLogPod(c, pod)
+		kubectlLogPod(c, pod, "")
+	}
+}
+
+func LogContainersInPodsWithLabels(c *client.Client, ns string, match map[string]string, containerSubstr string) {
+	podList, err := c.Pods(ns).List(api.ListOptions{LabelSelector: labels.SelectorFromSet(match)})
+	if err != nil {
+		Logf("Error getting pods in namespace %q: %v", ns, err)
+		return
+	}
+	for _, pod := range podList.Items {
+		kubectlLogPod(c, pod, containerSubstr)
 	}
 }