Merge pull request #13423 from umohnani8/kube

Throw an error if kube yaml has duplicate ctr names

pkg/domain/infra/abi/play.go

@@ -359,7 +359,13 @@ func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podY
 		return nil, err
 	}
 
+	ctrNames := make(map[string]string)
 	for _, initCtr := range podYAML.Spec.InitContainers {
+		// Error out if same name is used for more than one container
+		if _, ok := ctrNames[initCtr.Name]; ok {
+			return nil, errors.Errorf("the pod %q is invalid; duplicate container name %q detected", podName, initCtr.Name)
+		}
+		ctrNames[initCtr.Name] = ""
 		// Init containers cannot have either of lifecycle, livenessProbe, readinessProbe, or startupProbe set
 		if initCtr.Lifecycle != nil || initCtr.LivenessProbe != nil || initCtr.ReadinessProbe != nil || initCtr.StartupProbe != nil {
 			return nil, errors.Errorf("cannot create an init container that has either of lifecycle, livenessProbe, readinessProbe, or startupProbe set")
@@ -408,6 +414,11 @@ func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podY
 	}
 	for _, container := range podYAML.Spec.Containers {
 		if !strings.Contains("infra", container.Name) {
+			// Error out if the same name is used for more than one container
+			if _, ok := ctrNames[container.Name]; ok {
+				return nil, errors.Errorf("the pod %q is invalid; duplicate container name %q detected", podName, container.Name)
+			}
+			ctrNames[container.Name] = ""
 			pulledImage, labels, err := ic.getImageAndLabelInfo(ctx, cwd, annotations, writer, container, options)
 			if err != nil {
 				return nil, err

test/e2e/play_kube_test.go

@@ -1888,6 +1888,26 @@ var _ = Describe("Podman play kube", func() {
 		Expect(kube).Should(Exit(0))
 	})
 
+	It("podman play kube test duplicate container name", func() {
+		p := getPod(withCtr(getCtr(withName("testctr"), withCmd([]string{"echo", "hello"}))), withCtr(getCtr(withName("testctr"), withCmd([]string{"echo", "world"}))))
+
+		err := generateKubeYaml("pod", p, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).To(ExitWithError())
+
+		p = getPod(withPodInitCtr(getCtr(withImage(ALPINE), withCmd([]string{"echo", "hello"}), withInitCtr(), withName("initctr"))), withCtr(getCtr(withImage(ALPINE), withName("initctr"), withCmd([]string{"top"}))))
+
+		err = generateKubeYaml("pod", p, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube = podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).To(ExitWithError())
+	})
+
 	It("podman play kube test hostname", func() {
 		pod := getPod()
 		err := generateKubeYaml("pod", pod, kubeYaml)