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Add labels to PVCollector bound/unbound PVC metrics for VolumeAttributesClass Feature (#126166)
* Add labels to PVCollector bound/unbound PVC metrics
* fixup! Add labels to PVCollector bound/unbound PVC metrics
* wip: Fix 'Unknown
Decorator'
* fixup! Add labels to PVCollector bound/unbound PVC metrics
This commit is contained in:
Drew Sirenko
GitHub
parent
c01bc31fa2
commit
16c2ad5b84
@ -23,8 +23,10 @@ import (
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v1 "k8s.io/api/core/v1"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/legacyregistry"
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storagehelpers "k8s.io/component-helpers/storage/volume"
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"k8s.io/kubernetes/pkg/volume"
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metricutil "k8s.io/kubernetes/pkg/volume/util"
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"k8s.io/utils/ptr"
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)
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const (
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@ -39,10 +41,11 @@ const (
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unboundPVCKey = "unbound_pvc_count"
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// Label names.
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namespaceLabel = "namespace"
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storageClassLabel = "storage_class"
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pluginNameLabel = "plugin_name"
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volumeModeLabel = "volume_mode"
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namespaceLabel = "namespace"
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storageClassLabel = "storage_class"
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volumeAttributesClassLabel = "volume_attributes_class"
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pluginNameLabel = "plugin_name"
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volumeModeLabel = "volume_mode"
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// String to use when plugin name cannot be determined
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pluginNameNotAvailable = "N/A"
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@ -86,6 +89,19 @@ type pvAndPVCCountCollector struct {
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pluginMgr *volume.VolumePluginMgr
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}
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// Holds all dimensions for bound/unbound PVC metrics
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type pvcBindingMetricDimensions struct {
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namespace, storageClassName, volumeAttributesClassName string
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}
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func getPVCMetricDimensions(pvc *v1.PersistentVolumeClaim) pvcBindingMetricDimensions {
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return pvcBindingMetricDimensions{
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namespace: pvc.Namespace,
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storageClassName: storagehelpers.GetPersistentVolumeClaimClass(pvc),
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volumeAttributesClassName: ptr.Deref(pvc.Spec.VolumeAttributesClassName, ""),
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}
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}
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// Check if our collector implements necessary collector interface
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var _ metrics.StableCollector = &pvAndPVCCountCollector{}
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@ -109,12 +125,12 @@ var (
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boundPVCCountDesc = metrics.NewDesc(
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metrics.BuildFQName("", pvControllerSubsystem, boundPVCKey),
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"Gauge measuring number of persistent volume claim currently bound",
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[]string{namespaceLabel}, nil,
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[]string{namespaceLabel, storageClassLabel, volumeAttributesClassLabel}, nil,
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metrics.ALPHA, "")
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unboundPVCCountDesc = metrics.NewDesc(
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metrics.BuildFQName("", pvControllerSubsystem, unboundPVCKey),
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"Gauge measuring number of persistent volume claim currently unbound",
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[]string{namespaceLabel}, nil,
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[]string{namespaceLabel, storageClassLabel, volumeAttributesClassLabel}, nil,
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metrics.ALPHA, "")
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volumeOperationErrorsMetric = metrics.NewCounterVec(
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@ -218,32 +234,32 @@ func (collector *pvAndPVCCountCollector) pvCollect(ch chan<- metrics.Metric) {
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}
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func (collector *pvAndPVCCountCollector) pvcCollect(ch chan<- metrics.Metric) {
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boundNumberByNamespace := make(map[string]int)
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unboundNumberByNamespace := make(map[string]int)
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boundNumber := make(map[pvcBindingMetricDimensions]int)
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unboundNumber := make(map[pvcBindingMetricDimensions]int)
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for _, pvcObj := range collector.pvcLister.List() {
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pvc, ok := pvcObj.(*v1.PersistentVolumeClaim)
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if !ok {
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continue
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}
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if pvc.Status.Phase == v1.ClaimBound {
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boundNumberByNamespace[pvc.Namespace]++
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boundNumber[getPVCMetricDimensions(pvc)]++
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} else {
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unboundNumberByNamespace[pvc.Namespace]++
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unboundNumber[getPVCMetricDimensions(pvc)]++
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}
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}
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for namespace, number := range boundNumberByNamespace {
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for pvcLabels, number := range boundNumber {
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ch <- metrics.NewLazyConstMetric(
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boundPVCCountDesc,
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metrics.GaugeValue,
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float64(number),
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namespace)
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pvcLabels.namespace, pvcLabels.storageClassName, pvcLabels.volumeAttributesClassName)
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}
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for namespace, number := range unboundNumberByNamespace {
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for pvcLabels, number := range unboundNumber {
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ch <- metrics.NewLazyConstMetric(
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unboundPVCCountDesc,
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metrics.GaugeValue,
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float64(number),
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namespace)
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pvcLabels.namespace, pvcLabels.storageClassName, pvcLabels.volumeAttributesClassName)
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}
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}
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@ -32,7 +32,9 @@ import (
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/component-base/metrics/testutil"
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"k8s.io/component-helpers/storage/ephemeral"
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"k8s.io/kubernetes/pkg/features"
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kubeletmetrics "k8s.io/kubernetes/pkg/kubelet/metrics"
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"k8s.io/kubernetes/test/e2e/feature"
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"k8s.io/kubernetes/test/e2e/framework"
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e2emetrics "k8s.io/kubernetes/test/e2e/framework/metrics"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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@ -499,10 +501,11 @@ var _ = utils.SIGDescribe(framework.WithSerial(), "Volume metrics", func() {
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// Test for pv controller metrics, concretely: bound/unbound pv/pvc count.
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ginkgo.Describe("PVController", func() {
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const (
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classKey = "storage_class"
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namespaceKey = "namespace"
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pluginNameKey = "plugin_name"
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volumeModeKey = "volume_mode"
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namespaceKey = "namespace"
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pluginNameKey = "plugin_name"
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volumeModeKey = "volume_mode"
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storageClassKey = "storage_class"
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volumeAttributeClassKey = "volume_attributes_class"
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totalPVKey = "pv_collector_total_pv_count"
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boundPVKey = "pv_collector_bound_pv_count"
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@ -515,22 +518,24 @@ var _ = utils.SIGDescribe(framework.WithSerial(), "Volume metrics", func() {
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pv *v1.PersistentVolume
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pvc *v1.PersistentVolumeClaim
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className = "bound-unbound-count-test-sc"
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pvConfig = e2epv.PersistentVolumeConfig{
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storageClassName = "bound-unbound-count-test-sc"
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pvConfig = e2epv.PersistentVolumeConfig{
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PVSource: v1.PersistentVolumeSource{
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HostPath: &v1.HostPathVolumeSource{Path: "/data"},
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},
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NamePrefix: "pv-test-",
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StorageClassName: className,
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StorageClassName: storageClassName,
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}
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pvcConfig = e2epv.PersistentVolumeClaimConfig{StorageClassName: &className}
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// TODO: Insert volumeAttributesClassName into pvcConfig when "VolumeAttributesClass" is GA
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volumeAttributesClassName = "bound-unbound-count-test-vac"
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pvcConfig = e2epv.PersistentVolumeClaimConfig{StorageClassName: &storageClassName}
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e2emetrics = []struct {
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name string
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dimension string
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}{
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{boundPVKey, classKey},
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{unboundPVKey, classKey},
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{boundPVKey, storageClassKey},
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{unboundPVKey, storageClassKey},
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{boundPVCKey, namespaceKey},
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{unboundPVCKey, namespaceKey},
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}
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@ -556,7 +561,7 @@ var _ = utils.SIGDescribe(framework.WithSerial(), "Volume metrics", func() {
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if expectValues == nil {
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expectValues = make(map[string]int64)
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}
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// We using relative increment value instead of absolute value to reduce unexpected flakes.
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// We use relative increment value instead of absolute value to reduce unexpected flakes.
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// Concretely, we expect the difference of the updated values and original values for each
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// test suit are equal to expectValues.
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actualValues := calculateRelativeValues(originMetricValues[i],
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@ -604,8 +609,8 @@ var _ = utils.SIGDescribe(framework.WithSerial(), "Volume metrics", func() {
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var err error
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pv, err = e2epv.CreatePV(ctx, c, f.Timeouts, pv)
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framework.ExpectNoError(err, "Error creating pv: %v", err)
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waitForPVControllerSync(ctx, metricsGrabber, unboundPVKey, classKey)
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validator(ctx, []map[string]int64{nil, {className: 1}, nil, nil})
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waitForPVControllerSync(ctx, metricsGrabber, unboundPVKey, storageClassKey)
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validator(ctx, []map[string]int64{nil, {storageClassName: 1}, nil, nil})
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})
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ginkgo.It("should create unbound pvc count metrics for pvc controller after creating pvc only",
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@ -622,11 +627,45 @@ var _ = utils.SIGDescribe(framework.WithSerial(), "Volume metrics", func() {
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var err error
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pv, pvc, err = e2epv.CreatePVPVC(ctx, c, f.Timeouts, pvConfig, pvcConfig, ns, true)
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framework.ExpectNoError(err, "Error creating pv pvc: %v", err)
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waitForPVControllerSync(ctx, metricsGrabber, boundPVKey, classKey)
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waitForPVControllerSync(ctx, metricsGrabber, boundPVKey, storageClassKey)
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waitForPVControllerSync(ctx, metricsGrabber, boundPVCKey, namespaceKey)
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validator(ctx, []map[string]int64{{className: 1}, nil, {ns: 1}, nil})
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validator(ctx, []map[string]int64{{storageClassName: 1}, nil, {ns: 1}, nil})
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})
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// TODO: Merge with bound/unbound tests when "VolumeAttributesClass" feature is enabled by default
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f.It("should create unbound pvc count metrics for pvc controller with volume attributes class dimension after creating pvc only",
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feature.VolumeAttributesClass, framework.WithFeatureGate(features.VolumeAttributesClass), func(ctx context.Context) {
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var err error
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dimensions := []string{namespaceKey, storageClassKey, volumeAttributeClassKey}
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pvcConfigWithVAC := pvcConfig
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pvcConfigWithVAC.VolumeAttributesClassName = &volumeAttributesClassName
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pvcWithVAC := e2epv.MakePersistentVolumeClaim(pvcConfigWithVAC, ns)
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pvc, err = e2epv.CreatePVC(ctx, c, ns, pvcWithVAC)
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framework.ExpectNoError(err, "Error creating pvc: %v", err)
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waitForPVControllerSync(ctx, metricsGrabber, unboundPVCKey, volumeAttributeClassKey)
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controllerMetrics, err := metricsGrabber.GrabFromControllerManager(ctx)
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framework.ExpectNoError(err, "Error getting c-m metricValues: %v", err)
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err = testutil.ValidateMetrics(testutil.Metrics(controllerMetrics), unboundPVCKey, dimensions...)
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framework.ExpectNoError(err, "Invalid metric in Controller Manager metrics: %q", unboundPVCKey)
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})
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// TODO: Merge with bound/unbound tests when "VolumeAttributesClass" feature is enabled by default
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f.It("should create bound pv/pvc count metrics for pvc controller with volume attributes class dimension after creating both pv and pvc",
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feature.VolumeAttributesClass, framework.WithFeatureGate(features.VolumeAttributesClass), func(ctx context.Context) {
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var err error
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dimensions := []string{namespaceKey, storageClassKey, volumeAttributeClassKey}
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pvcConfigWithVAC := pvcConfig
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pvcConfigWithVAC.VolumeAttributesClassName = &volumeAttributesClassName
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pv, pvc, err = e2epv.CreatePVPVC(ctx, c, f.Timeouts, pvConfig, pvcConfigWithVAC, ns, true)
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framework.ExpectNoError(err, "Error creating pv pvc: %v", err)
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waitForPVControllerSync(ctx, metricsGrabber, boundPVKey, storageClassKey)
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waitForPVControllerSync(ctx, metricsGrabber, boundPVCKey, volumeAttributeClassKey)
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controllerMetrics, err := metricsGrabber.GrabFromControllerManager(ctx)
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framework.ExpectNoError(err, "Error getting c-m metricValues: %v", err)
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err = testutil.ValidateMetrics(testutil.Metrics(controllerMetrics), boundPVCKey, dimensions...)
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framework.ExpectNoError(err, "Invalid metric in Controller Manager metrics: %q", boundPVCKey)
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})
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ginkgo.It("should create total pv count metrics for with plugin and volume mode labels after creating pv",
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func(ctx context.Context) {
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var err error
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