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