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Add e2e testing for Block volume metrics

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The in-tree drivers support gathering the capacity of the Block volume.
Make sure that Kubelet exposes these for the matching PVCs.
This commit is contained in:
Niels de Vos 2021-04-28 16:37:39 +02:00
parent e7dedc5cd1
commit fd3bbf6f9e
1 changed files with 76 additions and 2 deletions
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78
test/e2e/storage/volume_metrics.go
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@ -47,6 +47,7 @@ var _ = utils.SIGDescribe("[Serial] Volume metrics", func() {
c clientset.Interface
ns string
pvc *v1.PersistentVolumeClaim
pvcBlock *v1.PersistentVolumeClaim
metricsGrabber *e2emetrics.Grabber
invalidSc *storagev1.StorageClass
defaultScName string
@ -67,9 +68,17 @@ var _ = utils.SIGDescribe("[Serial] Volume metrics", func() {
ClaimSize: "2Gi",
}
fsMode := v1.PersistentVolumeFilesystem
pvc = e2epv.MakePersistentVolumeClaim(e2epv.PersistentVolumeClaimConfig{
ClaimSize: test.ClaimSize,
VolumeMode: &test.VolumeMode,
VolumeMode: &fsMode,
}, ns)
// selected providers all support PersistentVolumeBlock
blockMode := v1.PersistentVolumeBlock
pvcBlock = e2epv.MakePersistentVolumeClaim(e2epv.PersistentVolumeClaimConfig{
ClaimSize: test.ClaimSize,
VolumeMode: &blockMode,
}, ns)
metricsGrabber, err = e2emetrics.NewMetricsGrabber(c, nil, true, false, true, false, false)
@ -201,7 +210,7 @@ var _ = utils.SIGDescribe("[Serial] Volume metrics", func() {
verifyMetricCount(storageOpMetrics, updatedStorageMetrics, "volume_provision", true)
})
ginkgo.It("should create volume metrics with the correct PVC ref", func() {
ginkgo.It("should create volume metrics with the correct FilesystemMode PVC ref", func() {
var err error
pvc, err = c.CoreV1().PersistentVolumeClaims(pvc.Namespace).Create(context.TODO(), pvc, metav1.CreateOptions{})
framework.ExpectNoError(err)
@ -258,6 +267,71 @@ var _ = utils.SIGDescribe("[Serial] Volume metrics", func() {
framework.ExpectNoError(e2epod.DeletePodWithWait(c, pod))
})
ginkgo.It("should create volume metrics with the correct BlockMode PVC ref", func() {
var err error
pvcBlock, err = c.CoreV1().PersistentVolumeClaims(pvcBlock.Namespace).Create(context.TODO(), pvcBlock, metav1.CreateOptions{})
framework.ExpectNoError(err)
framework.ExpectNotEqual(pvcBlock, nil)
pod := e2epod.MakePod(ns, nil, nil, false, "")
pod.Spec.Containers[0].VolumeDevices = []v1.VolumeDevice{{
Name: pvcBlock.Name,
DevicePath: "/mnt/" + pvcBlock.Name,
}}
pod.Spec.Volumes = []v1.Volume{{
Name: pvcBlock.Name,
VolumeSource: v1.VolumeSource{
PersistentVolumeClaim: &v1.PersistentVolumeClaimVolumeSource{
ClaimName: pvcBlock.Name,
ReadOnly: false,
},
},
}}
pod, err = c.CoreV1().Pods(ns).Create(context.TODO(), pod, metav1.CreateOptions{})
framework.ExpectNoError(err)
err = e2epod.WaitTimeoutForPodRunningInNamespace(c, pod.Name, pod.Namespace, f.Timeouts.PodStart)
framework.ExpectNoError(err, "Error starting pod ", pod.Name)
pod, err = c.CoreV1().Pods(ns).Get(context.TODO(), pod.Name, metav1.GetOptions{})
framework.ExpectNoError(err)
// Verify volume stat metrics were collected for the referenced PVC
volumeStatKeys := []string{
// BlockMode PVCs only support capacity (for now)
kubeletmetrics.VolumeStatsCapacityBytesKey,
}
key := volumeStatKeys[0]
kubeletKeyName := fmt.Sprintf("%s_%s", kubeletmetrics.KubeletSubsystem, key)
// Poll kubelet metrics waiting for the volume to be picked up
// by the volume stats collector
var kubeMetrics e2emetrics.KubeletMetrics
waitErr := wait.Poll(30*time.Second, 5*time.Minute, func() (bool, error) {
framework.Logf("Grabbing Kubelet metrics")
// Grab kubelet metrics from the node the pod was scheduled on
var err error
kubeMetrics, err = metricsGrabber.GrabFromKubelet(pod.Spec.NodeName)
if err != nil {
framework.Logf("Error fetching kubelet metrics")
return false, err
}
if !findVolumeStatMetric(kubeletKeyName, pvcBlock.Namespace, pvcBlock.Name, kubeMetrics) {
return false, nil
}
return true, nil
})
framework.ExpectNoError(waitErr, "Unable to find metric %s for PVC %s/%s", kubeletKeyName, pvcBlock.Namespace, pvcBlock.Name)
for _, key := range volumeStatKeys {
kubeletKeyName := fmt.Sprintf("%s_%s", kubeletmetrics.KubeletSubsystem, key)
found := findVolumeStatMetric(kubeletKeyName, pvcBlock.Namespace, pvcBlock.Name, kubeMetrics)
framework.ExpectEqual(found, true, "PVC %s, Namespace %s not found for %s", pvcBlock.Name, pvcBlock.Namespace, kubeletKeyName)
}
framework.Logf("Deleting pod %q/%q", pod.Namespace, pod.Name)
framework.ExpectNoError(e2epod.DeletePodWithWait(c, pod))
})
ginkgo.It("should create metrics for total time taken in volume operations in P/V Controller", func() {
var err error
pvc, err = c.CoreV1().PersistentVolumeClaims(pvc.Namespace).Create(context.TODO(), pvc, metav1.CreateOptions{})