234 lines
8.2 KiB
Go
234 lines
8.2 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/* This test check that SecurityContext parameters specified at the
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* pod or the container level work as intended. These tests cannot be
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* run when the 'SecurityContextDeny' admission controller is not used
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* so they are skipped by default.
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*/
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package e2e
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import (
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/util/uuid"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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func scTestPod(hostIPC bool, hostPID bool) *v1.Pod {
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podName := "security-context-" + string(uuid.NewUUID())
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pod := &v1.Pod{
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ObjectMeta: v1.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"name": podName},
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Annotations: map[string]string{},
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},
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Spec: v1.PodSpec{
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HostIPC: hostIPC,
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HostPID: hostPID,
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SecurityContext: &v1.PodSecurityContext{},
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Containers: []v1.Container{
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{
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Name: "test-container",
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Image: "gcr.io/google_containers/busybox:1.24",
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},
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},
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RestartPolicy: v1.RestartPolicyNever,
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},
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}
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return pod
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}
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var _ = framework.KubeDescribe("Security Context [Feature:SecurityContext]", func() {
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f := framework.NewDefaultFramework("security-context")
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It("should support pod.Spec.SecurityContext.SupplementalGroups", func() {
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pod := scTestPod(false, false)
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pod.Spec.Containers[0].Command = []string{"id", "-G"}
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pod.Spec.SecurityContext.SupplementalGroups = []int64{1234, 5678}
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groups := []string{"1234", "5678"}
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f.TestContainerOutput("pod.Spec.SecurityContext.SupplementalGroups", pod, 0, groups)
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})
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It("should support pod.Spec.SecurityContext.RunAsUser", func() {
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pod := scTestPod(false, false)
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var uid int64 = 1001
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pod.Spec.SecurityContext.RunAsUser = &uid
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pod.Spec.Containers[0].Command = []string{"sh", "-c", "id -u"}
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f.TestContainerOutput("pod.Spec.SecurityContext.RunAsUser", pod, 0, []string{
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fmt.Sprintf("%v", uid),
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})
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})
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It("should support container.SecurityContext.RunAsUser", func() {
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pod := scTestPod(false, false)
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var uid int64 = 1001
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var overrideUid int64 = 1002
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pod.Spec.SecurityContext.RunAsUser = &uid
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pod.Spec.Containers[0].SecurityContext = new(v1.SecurityContext)
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pod.Spec.Containers[0].SecurityContext.RunAsUser = &overrideUid
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pod.Spec.Containers[0].Command = []string{"sh", "-c", "id -u"}
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f.TestContainerOutput("pod.Spec.SecurityContext.RunAsUser", pod, 0, []string{
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fmt.Sprintf("%v", overrideUid),
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})
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})
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It("should support volume SELinux relabeling", func() {
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testPodSELinuxLabeling(f, false, false)
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})
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It("should support volume SELinux relabeling when using hostIPC", func() {
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testPodSELinuxLabeling(f, true, false)
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})
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It("should support volume SELinux relabeling when using hostPID", func() {
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testPodSELinuxLabeling(f, false, true)
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})
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It("should support seccomp alpha unconfined annotation on the container [Feature:Seccomp]", func() {
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// TODO: port to SecurityContext as soon as seccomp is out of alpha
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pod := scTestPod(false, false)
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pod.Annotations[v1.SeccompContainerAnnotationKeyPrefix+"test-container"] = "unconfined"
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pod.Annotations[v1.SeccompPodAnnotationKey] = "docker/default"
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pod.Spec.Containers[0].Command = []string{"grep", "ecc", "/proc/self/status"}
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f.TestContainerOutput(v1.SeccompPodAnnotationKey, pod, 0, []string{"0"}) // seccomp disabled
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})
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It("should support seccomp alpha unconfined annotation on the pod [Feature:Seccomp]", func() {
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// TODO: port to SecurityContext as soon as seccomp is out of alpha
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pod := scTestPod(false, false)
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pod.Annotations[v1.SeccompPodAnnotationKey] = "unconfined"
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pod.Spec.Containers[0].Command = []string{"grep", "ecc", "/proc/self/status"}
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f.TestContainerOutput(v1.SeccompPodAnnotationKey, pod, 0, []string{"0"}) // seccomp disabled
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})
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It("should support seccomp alpha docker/default annotation [Feature:Seccomp]", func() {
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// TODO: port to SecurityContext as soon as seccomp is out of alpha
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pod := scTestPod(false, false)
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pod.Annotations[v1.SeccompContainerAnnotationKeyPrefix+"test-container"] = "docker/default"
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pod.Spec.Containers[0].Command = []string{"grep", "ecc", "/proc/self/status"}
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f.TestContainerOutput(v1.SeccompPodAnnotationKey, pod, 0, []string{"2"}) // seccomp filtered
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})
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It("should support seccomp default which is unconfined [Feature:Seccomp]", func() {
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// TODO: port to SecurityContext as soon as seccomp is out of alpha
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pod := scTestPod(false, false)
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pod.Spec.Containers[0].Command = []string{"grep", "ecc", "/proc/self/status"}
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f.TestContainerOutput(v1.SeccompPodAnnotationKey, pod, 0, []string{"0"}) // seccomp disabled
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})
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})
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func testPodSELinuxLabeling(f *framework.Framework, hostIPC bool, hostPID bool) {
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// Write and read a file with an empty_dir volume
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// with a pod with the MCS label s0:c0,c1
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pod := scTestPod(hostIPC, hostPID)
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volumeName := "test-volume"
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mountPath := "/mounted_volume"
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pod.Spec.Containers[0].VolumeMounts = []v1.VolumeMount{
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{
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Name: volumeName,
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MountPath: mountPath,
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},
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}
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pod.Spec.Volumes = []v1.Volume{
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{
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Name: volumeName,
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VolumeSource: v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{
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Medium: v1.StorageMediumDefault,
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},
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},
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},
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}
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pod.Spec.SecurityContext.SELinuxOptions = &v1.SELinuxOptions{
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Level: "s0:c0,c1",
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}
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pod.Spec.Containers[0].Command = []string{"sleep", "6000"}
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client := f.ClientSet.Core().Pods(f.Namespace.Name)
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pod, err := client.Create(pod)
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framework.ExpectNoError(err, "Error creating pod %v", pod)
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framework.ExpectNoError(framework.WaitForPodRunningInNamespace(f.ClientSet, pod))
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testContent := "hello"
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testFilePath := mountPath + "/TEST"
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err = f.WriteFileViaContainer(pod.Name, pod.Spec.Containers[0].Name, testFilePath, testContent)
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Expect(err).To(BeNil())
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content, err := f.ReadFileViaContainer(pod.Name, pod.Spec.Containers[0].Name, testFilePath)
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Expect(err).To(BeNil())
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Expect(content).To(ContainSubstring(testContent))
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foundPod, err := f.ClientSet.Core().Pods(f.Namespace.Name).Get(pod.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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// Confirm that the file can be accessed from a second
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// pod using host_path with the same MCS label
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volumeHostPath := fmt.Sprintf("%s/pods/%s/volumes/kubernetes.io~empty-dir/%s", framework.TestContext.KubeVolumeDir, foundPod.UID, volumeName)
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By(fmt.Sprintf("confirming a container with the same label can read the file under --volume-dir=%s", framework.TestContext.KubeVolumeDir))
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pod = scTestPod(hostIPC, hostPID)
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pod.Spec.NodeName = foundPod.Spec.NodeName
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volumeMounts := []v1.VolumeMount{
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{
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Name: volumeName,
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MountPath: mountPath,
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},
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}
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volumes := []v1.Volume{
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{
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Name: volumeName,
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VolumeSource: v1.VolumeSource{
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HostPath: &v1.HostPathVolumeSource{
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Path: volumeHostPath,
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},
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},
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},
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}
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pod.Spec.Containers[0].VolumeMounts = volumeMounts
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pod.Spec.Volumes = volumes
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pod.Spec.Containers[0].Command = []string{"cat", testFilePath}
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pod.Spec.SecurityContext.SELinuxOptions = &v1.SELinuxOptions{
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Level: "s0:c0,c1",
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}
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f.TestContainerOutput("Pod with same MCS label reading test file", pod, 0, []string{testContent})
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// Confirm that the same pod with a different MCS
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// label cannot access the volume
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pod = scTestPod(hostIPC, hostPID)
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pod.Spec.Volumes = volumes
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pod.Spec.Containers[0].VolumeMounts = volumeMounts
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pod.Spec.Containers[0].Command = []string{"sleep", "6000"}
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pod.Spec.SecurityContext.SELinuxOptions = &v1.SELinuxOptions{
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Level: "s0:c2,c3",
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}
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_, err = client.Create(pod)
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framework.ExpectNoError(err, "Error creating pod %v", pod)
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err = f.WaitForPodRunning(pod.Name)
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framework.ExpectNoError(err, "Error waiting for pod to run %v", pod)
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content, err = f.ReadFileViaContainer(pod.Name, "test-container", testFilePath)
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Expect(content).NotTo(ContainSubstring(testContent))
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}
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