Print ephemeral containers in kubectl describe

staging/src/k8s.io/kubectl/pkg/describe/versioned/describe.go

@@ -710,6 +710,13 @@ func describePod(pod *corev1.Pod, events *corev1.EventList) (string, error) {
 			describeContainers("Init Containers", pod.Spec.InitContainers, pod.Status.InitContainerStatuses, EnvValueRetriever(pod), w, "")
 		}
 		describeContainers("Containers", pod.Spec.Containers, pod.Status.ContainerStatuses, EnvValueRetriever(pod), w, "")
+		if len(pod.Spec.EphemeralContainers) > 0 {
+			var ec []corev1.Container
+			for i := range pod.Spec.EphemeralContainers {
+				ec = append(ec, corev1.Container(pod.Spec.EphemeralContainers[i].EphemeralContainerCommon))
+			}
+			describeContainers("Ephemeral Containers", ec, pod.Status.EphemeralContainerStatuses, EnvValueRetriever(pod), w, "")
+		}
 		if len(pod.Spec.ReadinessGates) > 0 {
 			w.Write(LEVEL_0, "Readiness Gates:\n  Type\tStatus\n")
 			for _, g := range pod.Spec.ReadinessGates {

staging/src/k8s.io/kubectl/pkg/describe/versioned/describe_test.go

@@ -95,6 +95,51 @@ func TestDescribePod(t *testing.T) {
 	}
 }
 
+func TestDescribePodEphemeralContainers(t *testing.T) {
+	fake := fake.NewSimpleClientset(&corev1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "bar",
+			Namespace: "foo",
+		},
+		Spec: corev1.PodSpec{
+			EphemeralContainers: []corev1.EphemeralContainer{
+				{
+					EphemeralContainerCommon: corev1.EphemeralContainerCommon{
+						Name:  "debugger",
+						Image: "busybox",
+					},
+				},
+			},
+		},
+		Status: corev1.PodStatus{
+			EphemeralContainerStatuses: []corev1.ContainerStatus{
+				{
+					Name: "debugger",
+					State: corev1.ContainerState{
+						Running: &corev1.ContainerStateRunning{
+							StartedAt: metav1.NewTime(time.Now()),
+						},
+					},
+					Ready:        false,
+					RestartCount: 0,
+				},
+			},
+		},
+	})
+	c := &describeClient{T: t, Namespace: "foo", Interface: fake}
+	d := PodDescriber{c}
+	out, err := d.Describe("foo", "bar", describe.DescriberSettings{ShowEvents: true})
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if !strings.Contains(out, "debugger:") {
+		t.Errorf("unexpected out: %s", out)
+	}
+	if !strings.Contains(out, "busybox") {
+		t.Errorf("unexpected out: %s", out)
+	}
+}
+
 func TestDescribePodNode(t *testing.T) {
 	fake := fake.NewSimpleClientset(&corev1.Pod{
 		ObjectMeta: metav1.ObjectMeta{