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Add e2e tests for SELinuxMount
This commit is contained in:
Jan Safranek
parent
d2b4928669
commit
52558a0310
@ -268,11 +268,15 @@ var (
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// TODO: document the feature (owning SIG, when to use this feature for a test)
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SeccompDefault = framework.WithFeature(framework.ValidFeatures.Add("SeccompDefault"))
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// TODO: document the feature (owning SIG, when to use this feature for a test)
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// Owner: sig-storage
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// This feature marks tests that need all schedulable Linux nodes in the cluster to have SELinux enabled.
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SELinux = framework.WithFeature(framework.ValidFeatures.Add("SELinux"))
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// TODO: document the feature (owning SIG, when to use this feature for a test)
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SELinuxMountReadWriteOncePod = framework.WithFeature(framework.ValidFeatures.Add("SELinuxMountReadWriteOncePod"))
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// Owner: sig-storage
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// This feature marks tests that need SELinuxMountReadWriteOncePod feature gate enabled and SELinuxMount **disabled**.
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// This is a temporary feature to allow testing of metrics when SELinuxMount is disabled.
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// TODO: remove when SELinuxMount feature gate is enabled by default.
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SELinuxMountReadWriteOncePodOnly = framework.WithFeature(framework.ValidFeatures.Add("SELinuxMountReadWriteOncePodOnly"))
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// TODO: document the feature (owning SIG, when to use this feature for a test)
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ServiceCIDRs = framework.WithFeature(framework.ValidFeatures.Add("ServiceCIDRs"))
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@ -31,6 +31,7 @@ import (
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/kubelet/events"
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"k8s.io/kubernetes/test/e2e/feature"
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"k8s.io/kubernetes/test/e2e/framework"
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@ -75,6 +76,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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expectedFirstMountOptions []string
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expectedSecondMountOptions []string
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expectedUnstage bool
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feature interface{}
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}{
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// Start just a single pod and check its volume is mounted correctly
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{
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@ -83,6 +85,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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firstPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOncePod,
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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{
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name: "should add SELinux mount option to existing mount options",
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@ -91,13 +94,23 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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mountOptions: []string{"noexec", "noatime"},
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volumeMode: v1.ReadWriteOncePod,
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expectedFirstMountOptions: []string{"noexec", "noatime", seLinuxMountOption1},
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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{
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name: "should not pass SELinux mount option for RWO volume",
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name: "should not pass SELinux mount option for RWO volume with SELinuxMount disabled",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOnce,
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expectedFirstMountOptions: nil,
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feature: feature.SELinuxMountReadWriteOncePodOnly,
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},
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{
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name: "should pass SELinux mount option for RWO volume with SELinuxMount enabled",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOnce,
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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feature: framework.WithFeatureGate(features.SELinuxMount),
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},
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{
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name: "should not pass SELinux mount option for Pod without SELinux context",
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@ -105,6 +118,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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firstPodSELinuxOpts: nil,
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volumeMode: v1.ReadWriteOncePod,
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expectedFirstMountOptions: nil,
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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{
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name: "should not pass SELinux mount option for CSI driver that does not support SELinux mount",
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@ -112,10 +126,11 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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firstPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOncePod,
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expectedFirstMountOptions: nil,
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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// Start two pods in a sequence and check their volume is / is not unmounted in between
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{
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name: "should not unstage volume when starting a second pod with the same SELinux context",
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name: "should not unstage RWOP volume when starting a second pod with the same SELinux context",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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startSecondPod: true,
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@ -124,9 +139,10 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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expectedSecondMountOptions: []string{seLinuxMountOption1},
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expectedUnstage: false,
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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{
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name: "should unstage volume when starting a second pod with different SELinux context",
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name: "should unstage RWOP volume when starting a second pod with different SELinux context",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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startSecondPod: true,
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@ -135,11 +151,36 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount", func() {
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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expectedSecondMountOptions: []string{seLinuxMountOption2},
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expectedUnstage: true,
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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{
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name: "should not unstage RWO volume when starting a second pod with the same SELinux context",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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startSecondPod: true,
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secondPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOnce,
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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expectedSecondMountOptions: []string{seLinuxMountOption1},
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expectedUnstage: false,
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feature: framework.WithFeatureGate(features.SELinuxMount),
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},
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{
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name: "should unstage RWO volume when starting a second pod with different SELinux context",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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startSecondPod: true,
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secondPodSELinuxOpts: &seLinuxOpts2,
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volumeMode: v1.ReadWriteOnce,
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expectedFirstMountOptions: []string{seLinuxMountOption1},
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expectedSecondMountOptions: []string{seLinuxMountOption2},
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expectedUnstage: true,
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feature: framework.WithFeatureGate(features.SELinuxMount),
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},
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}
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for _, t := range tests {
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t := t
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ginkgo.It(t.name, func(ctx context.Context) {
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ginkgo.It(t.name, t.feature, func(ctx context.Context) {
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if framework.NodeOSDistroIs("windows") {
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e2eskipper.Skipf("SELinuxMount is only applied on linux nodes -- skipping")
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}
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@ -252,7 +293,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount metrics", func() {
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m := newMockDriverSetup(f)
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// [Serial]: the tests read global kube-controller-manager metrics, so no other test changes them in parallel.
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f.Context("SELinuxMount metrics [LinuxOnly]", feature.SELinux, feature.SELinuxMountReadWriteOncePod, f.WithSerial(), func() {
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f.Context("SELinuxMount metrics [LinuxOnly]", feature.SELinux, f.WithSerial(), func() {
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// Make sure all options are set so system specific defaults are not used.
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seLinuxOpts1 := v1.SELinuxOptions{
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User: "system_u",
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@ -276,6 +317,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount metrics", func() {
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waitForSecondPodStart bool
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secondPodFailureEvent string
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expectIncreases sets.String
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feature interface{}
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}{
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{
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name: "warning is not bumped on two Pods with the same context on RWO volume",
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@ -285,6 +327,7 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount metrics", func() {
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volumeMode: v1.ReadWriteOnce,
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waitForSecondPodStart: true,
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expectIncreases: sets.NewString( /* no metric is increased, admitted_total was already increased when the first pod started */ ),
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feature: feature.SELinuxMountReadWriteOncePodOnly,
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},
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{
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name: "warning is bumped on two Pods with a different context on RWO volume",
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@ -294,6 +337,28 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount metrics", func() {
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volumeMode: v1.ReadWriteOnce,
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waitForSecondPodStart: true,
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expectIncreases: sets.NewString("volume_manager_selinux_volume_context_mismatch_warnings_total"),
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feature: feature.SELinuxMountReadWriteOncePodOnly,
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},
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{
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name: "error is not bumped on two Pods with the same context on RWO volume and SELinuxMount enabled",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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secondPodSELinuxOpts: &seLinuxOpts1,
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volumeMode: v1.ReadWriteOnce,
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waitForSecondPodStart: true,
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expectIncreases: sets.NewString( /* no metric is increased, admitted_total was already increased when the first pod started */ ),
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feature: framework.WithFeatureGate(features.SELinuxMount),
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},
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{
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name: "error is bumped on two Pods with a different context on RWO volume and SELinuxMount enabled",
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csiDriverSELinuxEnabled: true,
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firstPodSELinuxOpts: &seLinuxOpts1,
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secondPodSELinuxOpts: &seLinuxOpts2,
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secondPodFailureEvent: "conflicting SELinux labels of volume",
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volumeMode: v1.ReadWriteOnce,
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waitForSecondPodStart: false,
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expectIncreases: sets.NewString("volume_manager_selinux_volume_context_mismatch_errors_total"),
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feature: framework.WithFeatureGate(features.SELinuxMount),
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},
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{
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name: "error is bumped on two Pods with a different context on RWOP volume",
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@ -304,11 +369,12 @@ var _ = utils.SIGDescribe("CSI Mock selinux on mount metrics", func() {
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volumeMode: v1.ReadWriteOncePod,
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waitForSecondPodStart: false,
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expectIncreases: sets.NewString("volume_manager_selinux_volume_context_mismatch_errors_total"),
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feature: framework.WithFeatureGate(features.SELinuxMountReadWriteOncePod),
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},
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}
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for _, t := range tests {
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t := t
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ginkgo.It(t.name, func(ctx context.Context) {
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ginkgo.It(t.name, t.feature, func(ctx context.Context) {
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// Some metrics use CSI driver name as a label, which is "csi-mock-" + the namespace name.
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volumePluginLabel := "{volume_plugin=\"kubernetes.io/csi/csi-mock-" + f.Namespace.Name + "\"}"
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