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Throw an error if kube yaml has duplicate ctr names

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Error out if the kube yaml passed to play kube has more
than one container or init container with the same name.

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
This commit is contained in:
Urvashi Mohnani
2022-03-04 15:01:46 -05:00
parent f4d6e87772
commit d302c08cff
2 changed files with 31 additions and 0 deletions
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11
pkg/domain/infra/abi/play.go
View File

@ -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

20
test/e2e/play_kube_test.go
View File

@ -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)