mirror of
https://github.com/k3s-io/kubernetes.git
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FsgroupChange policy test suite
This commit is contained in:
Saikat Roychowdhury
parent
23207436cd
commit
a07096952b
@ -37,18 +37,19 @@ var (
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// Config is a struct containing all arguments for creating a pod.
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// SELinux testing requires to pass HostIPC and HostPID as boolean arguments.
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type Config struct {
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NS string
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PVCs []*v1.PersistentVolumeClaim
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PVCsReadOnly bool
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InlineVolumeSources []*v1.VolumeSource
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IsPrivileged bool
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Command string
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HostIPC bool
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HostPID bool
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SeLinuxLabel *v1.SELinuxOptions
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FsGroup *int64
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NodeSelection NodeSelection
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ImageID int
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NS string
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PVCs []*v1.PersistentVolumeClaim
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PVCsReadOnly bool
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InlineVolumeSources []*v1.VolumeSource
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IsPrivileged bool
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Command string
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HostIPC bool
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HostPID bool
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SeLinuxLabel *v1.SELinuxOptions
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FsGroup *int64
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NodeSelection NodeSelection
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ImageID int
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PodFSGroupChangePolicy *v1.PodFSGroupChangePolicy
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}
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// CreateUnschedulablePod with given claims based on node selector
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@ -219,6 +220,10 @@ func MakeSecPod(podConfig *Config) (*v1.Pod, error) {
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RestartPolicy: v1.RestartPolicyOnFailure,
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},
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}
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if podConfig.PodFSGroupChangePolicy != nil {
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podSpec.Spec.SecurityContext.FSGroupChangePolicy = podConfig.PodFSGroupChangePolicy
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}
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var volumeMounts = make([]v1.VolumeMount, 0)
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var volumeDevices = make([]v1.VolumeDevice, 0)
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var volumes = make([]v1.Volume, len(podConfig.PVCs)+len(podConfig.InlineVolumeSources))
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@ -7,6 +7,7 @@ go_library(
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"disruptive.go",
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"driveroperations.go",
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"ephemeral.go",
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"fsgroupchangepolicy.go",
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"multivolume.go",
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"provisioning.go",
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"snapshottable.go",
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@ -63,6 +64,7 @@ go_library(
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"//vendor/github.com/onsi/ginkgo:go_default_library",
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"//vendor/github.com/onsi/gomega:go_default_library",
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"//vendor/github.com/pkg/errors:go_default_library",
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"//vendor/k8s.io/utils/pointer:go_default_library",
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],
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)
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@ -85,6 +85,7 @@ var BaseSuites = []func() TestSuite{
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InitVolumeLimitsTestSuite,
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InitTopologyTestSuite,
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InitVolumeStressTestSuite,
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InitFsGroupChangePolicyTestSuite,
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}
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// CSISuites is a list of storage test suites that work only for CSI drivers
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275
test/e2e/storage/testsuites/fsgroupchangepolicy.go
Normal file
275
test/e2e/storage/testsuites/fsgroupchangepolicy.go
Normal file
@ -0,0 +1,275 @@
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/*
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Copyright 2020 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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package testsuites
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import (
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"fmt"
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"strconv"
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"github.com/onsi/ginkgo"
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v1 "k8s.io/api/core/v1"
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errors "k8s.io/apimachinery/pkg/util/errors"
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"k8s.io/kubernetes/test/e2e/framework"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
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e2evolume "k8s.io/kubernetes/test/e2e/framework/volume"
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"k8s.io/kubernetes/test/e2e/storage/testpatterns"
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storageutils "k8s.io/kubernetes/test/e2e/storage/utils"
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utilpointer "k8s.io/utils/pointer"
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)
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const (
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rootDir = "/mnt/volume1"
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rootDirFile = "file1"
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rootDirFilePath = rootDir + "/" + rootDirFile
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subdir = "/mnt/volume1/subdir"
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subDirFile = "file2"
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subDirFilePath = subdir + "/" + subDirFile
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)
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type fsGroupChangePolicyTestSuite struct {
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tsInfo TestSuiteInfo
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}
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var _ TestSuite = &fsGroupChangePolicyTestSuite{}
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// InitFsGroupChangePolicyTestSuite returns fsGroupChangePolicyTestSuite that implements TestSuite interface
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func InitFsGroupChangePolicyTestSuite() TestSuite {
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return &fsGroupChangePolicyTestSuite{
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tsInfo: TestSuiteInfo{
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Name: "fsgroupchangepolicy",
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TestPatterns: []testpatterns.TestPattern{
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testpatterns.DefaultFsDynamicPV,
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},
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SupportedSizeRange: e2evolume.SizeRange{
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Min: "1Mi",
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},
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},
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}
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}
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func (s *fsGroupChangePolicyTestSuite) GetTestSuiteInfo() TestSuiteInfo {
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return s.tsInfo
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}
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func (s *fsGroupChangePolicyTestSuite) SkipRedundantSuite(driver TestDriver, pattern testpatterns.TestPattern) {
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skipVolTypePatterns(pattern, driver, testpatterns.NewVolTypeMap(testpatterns.CSIInlineVolume, testpatterns.GenericEphemeralVolume))
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}
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func (s *fsGroupChangePolicyTestSuite) DefineTests(driver TestDriver, pattern testpatterns.TestPattern) {
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type local struct {
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config *PerTestConfig
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driverCleanup func()
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driver TestDriver
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resource *VolumeResource
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}
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var l local
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ginkgo.BeforeEach(func() {
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dInfo := driver.GetDriverInfo()
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if !dInfo.Capabilities[CapFsGroup] {
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e2eskipper.Skipf("Driver %q does not support FsGroup - skipping", dInfo.Name)
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}
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if pattern.VolMode == v1.PersistentVolumeBlock {
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e2eskipper.Skipf("Test does not support non-filesystem volume mode - skipping")
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}
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if pattern.VolType != testpatterns.DynamicPV {
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e2eskipper.Skipf("Suite %q does not support %v", s.tsInfo.Name, pattern.VolType)
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}
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_, ok := driver.(DynamicPVTestDriver)
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if !ok {
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e2eskipper.Skipf("Driver %s doesn't support %v -- skipping", dInfo.Name, pattern.VolType)
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}
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})
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// This intentionally comes after checking the preconditions because it
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// registers its own BeforeEach which creates the namespace. Beware that it
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// also registers an AfterEach which renders f unusable. Any code using
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// f must run inside an It or Context callback.
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f := framework.NewDefaultFramework("fsgroupchangepolicy")
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init := func() {
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e2eskipper.SkipIfNodeOSDistroIs("windows")
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l = local{}
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l.driver = driver
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l.config, l.driverCleanup = driver.PrepareTest(f)
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testVolumeSizeRange := s.GetTestSuiteInfo().SupportedSizeRange
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l.resource = CreateVolumeResource(l.driver, l.config, pattern, testVolumeSizeRange)
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}
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cleanup := func() {
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var errs []error
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if l.resource != nil {
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if err := l.resource.CleanupResource(); err != nil {
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errs = append(errs, err)
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}
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l.resource = nil
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}
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if l.driverCleanup != nil {
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errs = append(errs, tryFunc(l.driverCleanup))
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l.driverCleanup = nil
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}
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framework.ExpectNoError(errors.NewAggregate(errs), "while cleanup resource")
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}
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tests := []struct {
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name string // Test case name
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podfsGroupChangePolicy string // 'Always' or 'OnRootMismatch'
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initialPodFsGroup int // FsGroup of the initial pod
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changedRootDirFileOwnership int // Change the ownership of the file in the root directory (/mnt/volume1/file1), as part of the initial pod
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changedSubDirFileOwnership int // Change the ownership of the file in the sub directory (/mnt/volume1/subdir/file2), as part of the initial pod
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secondPodFsGroup int // FsGroup of the second pod
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finalExpectedRootDirFileOwnership int // Final expcted ownership of the file in the root directory (/mnt/volume1/file1), as part of the second pod
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finalExpectedSubDirFileOwnership int // Final expcted ownership of the file in the sub directory (/mnt/volume1/subdir/file2), as part of the second pod
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}{
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// Test cases for 'Always' policy
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{
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name: "pod created with an initial fsgroup, new pod fsgroup applied to volume contents",
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podfsGroupChangePolicy: "Always",
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initialPodFsGroup: 1000,
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secondPodFsGroup: 2000,
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finalExpectedRootDirFileOwnership: 2000,
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finalExpectedSubDirFileOwnership: 2000,
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},
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{
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name: "pod created with an initial fsgroup, volume contents ownership changed in first pod, new pod with same fsgroup applied to the volume contents",
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podfsGroupChangePolicy: "Always",
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initialPodFsGroup: 1000,
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changedRootDirFileOwnership: 2000,
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changedSubDirFileOwnership: 3000,
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secondPodFsGroup: 1000,
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finalExpectedRootDirFileOwnership: 1000,
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finalExpectedSubDirFileOwnership: 1000,
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},
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{
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name: "pod created with an initial fsgroup, volume contents ownership changed in first pod, new pod with different fsgroup applied to the volume contents",
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podfsGroupChangePolicy: "Always",
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initialPodFsGroup: 1000,
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changedRootDirFileOwnership: 2000,
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changedSubDirFileOwnership: 3000,
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secondPodFsGroup: 4000,
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finalExpectedRootDirFileOwnership: 4000,
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finalExpectedSubDirFileOwnership: 4000,
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},
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// Test cases for 'OnRootMismatch' policy
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{
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name: "pod created with an initial fsgroup, new pod fsgroup applied to volume contents",
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podfsGroupChangePolicy: "OnRootMismatch",
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initialPodFsGroup: 1000,
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secondPodFsGroup: 2000,
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finalExpectedRootDirFileOwnership: 2000,
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finalExpectedSubDirFileOwnership: 2000,
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},
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{
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name: "pod created with an initial fsgroup, volume contents ownership changed in first pod, new pod with same fsgroup skips ownership changes to the volume contents",
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podfsGroupChangePolicy: "OnRootMismatch",
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initialPodFsGroup: 1000,
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changedRootDirFileOwnership: 2000,
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changedSubDirFileOwnership: 3000,
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secondPodFsGroup: 1000,
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finalExpectedRootDirFileOwnership: 2000,
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finalExpectedSubDirFileOwnership: 3000,
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},
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{
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name: "pod created with an initial fsgroup, volume contents ownership changed in first pod, new pod with different fsgroup applied to the volume contents",
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podfsGroupChangePolicy: "OnRootMismatch",
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initialPodFsGroup: 1000,
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changedRootDirFileOwnership: 2000,
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changedSubDirFileOwnership: 3000,
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secondPodFsGroup: 4000,
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finalExpectedRootDirFileOwnership: 4000,
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finalExpectedSubDirFileOwnership: 4000,
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},
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}
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for _, t := range tests {
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test := t
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testCaseName := fmt.Sprintf("(%s)[LinuxOnly], %s", test.podfsGroupChangePolicy, test.name)
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ginkgo.It(testCaseName, func() {
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init()
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defer cleanup()
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policy := v1.PodFSGroupChangePolicy(test.podfsGroupChangePolicy)
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podConfig := e2epod.Config{
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NS: f.Namespace.Name,
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NodeSelection: l.config.ClientNodeSelection,
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PVCs: []*v1.PersistentVolumeClaim{l.resource.Pvc},
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FsGroup: utilpointer.Int64Ptr(int64(test.initialPodFsGroup)),
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PodFSGroupChangePolicy: &policy,
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}
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// Create initial pod and create files in root and sub-directory and verify ownership.
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pod := createPodAndVerifyContentGid(l.config.Framework, &podConfig, true /* createInitialFiles */, "" /* expectedRootDirFileOwnership */, "" /* expectedSubDirFileOwnership */)
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// Change the ownership of files in the initial pod.
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if test.changedRootDirFileOwnership != 0 {
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ginkgo.By(fmt.Sprintf("Changing the root directory file ownership to %s", strconv.Itoa(test.changedRootDirFileOwnership)))
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storageutils.ChangeFilePathGidInPod(f, rootDirFilePath, strconv.Itoa(test.changedRootDirFileOwnership), pod)
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}
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if test.changedSubDirFileOwnership != 0 {
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ginkgo.By(fmt.Sprintf("Changing the sub-directory file ownership to %s", strconv.Itoa(test.changedSubDirFileOwnership)))
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storageutils.ChangeFilePathGidInPod(f, subDirFilePath, strconv.Itoa(test.changedSubDirFileOwnership), pod)
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}
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ginkgo.By(fmt.Sprintf("Deleting Pod %s/%s", pod.Namespace, pod.Name))
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framework.ExpectNoError(e2epod.DeletePodWithWait(f.ClientSet, pod))
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// Create a second pod with existing volume and verify the contents ownership.
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podConfig.FsGroup = utilpointer.Int64Ptr(int64(test.secondPodFsGroup))
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pod = createPodAndVerifyContentGid(l.config.Framework, &podConfig, false /* createInitialFiles */, strconv.Itoa(test.finalExpectedRootDirFileOwnership), strconv.Itoa(test.finalExpectedSubDirFileOwnership))
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ginkgo.By(fmt.Sprintf("Deleting Pod %s/%s", pod.Namespace, pod.Name))
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framework.ExpectNoError(e2epod.DeletePodWithWait(f.ClientSet, pod))
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})
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}
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}
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func createPodAndVerifyContentGid(f *framework.Framework, podConfig *e2epod.Config, createInitialFiles bool, expectedRootDirFileOwnership, expectedSubDirFileOwnership string) *v1.Pod {
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podFsGroup := strconv.FormatInt(*podConfig.FsGroup, 10)
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ginkgo.By(fmt.Sprintf("Creating Pod in namespace %s with fsgroup %s", podConfig.NS, podFsGroup))
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pod, err := e2epod.CreateSecPodWithNodeSelection(f.ClientSet, podConfig, framework.PodStartTimeout)
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framework.ExpectNoError(err)
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framework.Logf("Pod %s/%s started successfully", pod.Namespace, pod.Name)
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if createInitialFiles {
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ginkgo.By(fmt.Sprintf("Creating a sub-directory and file, and verifying their ownership is %s", podFsGroup))
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cmd := fmt.Sprintf("touch %s", rootDirFilePath)
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var err error
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_, _, err = storageutils.PodExec(f, pod, cmd)
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framework.ExpectNoError(err)
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storageutils.VerifyFilePathGidInPod(f, rootDirFilePath, podFsGroup, pod)
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cmd = fmt.Sprintf("mkdir %s", subdir)
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_, _, err = storageutils.PodExec(f, pod, cmd)
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framework.ExpectNoError(err)
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cmd = fmt.Sprintf("touch %s", subDirFilePath)
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_, _, err = storageutils.PodExec(f, pod, cmd)
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framework.ExpectNoError(err)
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storageutils.VerifyFilePathGidInPod(f, subDirFilePath, podFsGroup, pod)
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return pod
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}
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// Verify existing contents of the volume
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ginkgo.By(fmt.Sprintf("Verifying the ownership of root directory file is %s", expectedRootDirFileOwnership))
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storageutils.VerifyFilePathGidInPod(f, rootDirFilePath, expectedRootDirFileOwnership, pod)
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ginkgo.By(fmt.Sprintf("Verifying the ownership of sub directory file is %s", expectedSubDirFileOwnership))
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storageutils.VerifyFilePathGidInPod(f, subDirFilePath, expectedSubDirFileOwnership, pod)
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return pod
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}
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@ -841,3 +841,22 @@ func WaitForGVRFinalizer(ctx context.Context, c dynamic.Interface, gvr schema.Gr
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}
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return err
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}
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// VerifyFilePathGidInPod verfies expected GID of the target filepath
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func VerifyFilePathGidInPod(f *framework.Framework, filePath, expectedGid string, pod *v1.Pod) {
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cmd := fmt.Sprintf("ls -l %s", filePath)
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stdout, stderr, err := PodExec(f, pod, cmd)
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framework.ExpectNoError(err)
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framework.Logf("pod %s/%s exec for cmd %s, stdout: %s, stderr: %s", pod.Namespace, pod.Name, cmd, stdout, stderr)
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ll := strings.Fields(stdout)
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framework.Logf("stdout split: %v, expected gid: %v", ll, expectedGid)
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framework.ExpectEqual(ll[3], expectedGid)
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}
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// ChangeFilePathGidInPod changes the GID of the target filepath.
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func ChangeFilePathGidInPod(f *framework.Framework, filePath, targetGid string, pod *v1.Pod) {
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cmd := fmt.Sprintf("chgrp %s %s", targetGid, filePath)
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_, _, err := PodExec(f, pod, cmd)
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framework.ExpectNoError(err)
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VerifyFilePathGidInPod(f, filePath, targetGid, pod)
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}
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