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https://github.com/k3s-io/kubernetes.git
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279 lines
12 KiB
Go
279 lines
12 KiB
Go
/*
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Copyright 2017 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 monitoring
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import (
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"context"
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"time"
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gcm "google.golang.org/api/monitoring/v3"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/selection"
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"k8s.io/client-go/discovery"
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cacheddiscovery "k8s.io/client-go/discovery/cached/memory"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/restmapper"
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"k8s.io/kubernetes/test/e2e/framework"
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e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
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instrumentation "k8s.io/kubernetes/test/e2e/instrumentation/common"
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customclient "k8s.io/metrics/pkg/client/custom_metrics"
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externalclient "k8s.io/metrics/pkg/client/external_metrics"
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"github.com/onsi/ginkgo"
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"golang.org/x/oauth2/google"
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"google.golang.org/api/option"
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)
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const (
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stackdriverExporterPod1 = "stackdriver-exporter-1"
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stackdriverExporterPod2 = "stackdriver-exporter-2"
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stackdriverExporterLabel = "stackdriver-exporter"
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)
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var _ = instrumentation.SIGDescribe("Stackdriver Monitoring", func() {
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ginkgo.BeforeEach(func() {
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e2eskipper.SkipUnlessProviderIs("gce", "gke")
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})
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f := framework.NewDefaultFramework("stackdriver-monitoring")
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ginkgo.It("should run Custom Metrics - Stackdriver Adapter for old resource model [Feature:StackdriverCustomMetrics]", func() {
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kubeClient := f.ClientSet
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config, err := framework.LoadConfig()
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if err != nil {
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framework.Failf("Failed to load config: %s", err)
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}
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discoveryClient := discovery.NewDiscoveryClientForConfigOrDie(config)
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cachedDiscoClient := cacheddiscovery.NewMemCacheClient(discoveryClient)
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restMapper := restmapper.NewDeferredDiscoveryRESTMapper(cachedDiscoClient)
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restMapper.Reset()
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apiVersionsGetter := customclient.NewAvailableAPIsGetter(discoveryClient)
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customMetricsClient := customclient.NewForConfig(config, restMapper, apiVersionsGetter)
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testCustomMetrics(f, kubeClient, customMetricsClient, discoveryClient, AdapterForOldResourceModel)
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})
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ginkgo.It("should run Custom Metrics - Stackdriver Adapter for new resource model [Feature:StackdriverCustomMetrics]", func() {
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kubeClient := f.ClientSet
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config, err := framework.LoadConfig()
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if err != nil {
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framework.Failf("Failed to load config: %s", err)
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}
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discoveryClient := discovery.NewDiscoveryClientForConfigOrDie(config)
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cachedDiscoClient := cacheddiscovery.NewMemCacheClient(discoveryClient)
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restMapper := restmapper.NewDeferredDiscoveryRESTMapper(cachedDiscoClient)
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restMapper.Reset()
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apiVersionsGetter := customclient.NewAvailableAPIsGetter(discoveryClient)
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customMetricsClient := customclient.NewForConfig(config, restMapper, apiVersionsGetter)
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testCustomMetrics(f, kubeClient, customMetricsClient, discoveryClient, AdapterForNewResourceModel)
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})
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ginkgo.It("should run Custom Metrics - Stackdriver Adapter for external metrics [Feature:StackdriverExternalMetrics]", func() {
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kubeClient := f.ClientSet
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config, err := framework.LoadConfig()
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if err != nil {
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framework.Failf("Failed to load config: %s", err)
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}
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externalMetricsClient := externalclient.NewForConfigOrDie(config)
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testExternalMetrics(f, kubeClient, externalMetricsClient)
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})
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})
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func testCustomMetrics(f *framework.Framework, kubeClient clientset.Interface, customMetricsClient customclient.CustomMetricsClient, discoveryClient *discovery.DiscoveryClient, adapterDeployment string) {
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projectID := framework.TestContext.CloudConfig.ProjectID
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ctx := context.Background()
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client, err := google.DefaultClient(ctx, gcm.CloudPlatformScope)
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framework.ExpectNoError(err)
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gcmService, err := gcm.NewService(ctx, option.WithHTTPClient(client))
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if err != nil {
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framework.Failf("Failed to create gcm service, %v", err)
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}
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// Set up a cluster: create a custom metric and set up k8s-sd adapter
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err = CreateDescriptors(gcmService, projectID)
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if err != nil {
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framework.Failf("Failed to create metric descriptor: %s", err)
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}
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defer CleanupDescriptors(gcmService, projectID)
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err = CreateAdapter(f.Namespace.Name, adapterDeployment)
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if err != nil {
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framework.Failf("Failed to set up: %s", err)
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}
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defer CleanupAdapter(f.Namespace.Name, adapterDeployment)
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_, err = kubeClient.RbacV1().ClusterRoleBindings().Create(context.TODO(), HPAPermissions, metav1.CreateOptions{})
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if err != nil {
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framework.Failf("Failed to create ClusterRoleBindings: %v", err)
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}
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defer kubeClient.RbacV1().ClusterRoleBindings().Delete(context.TODO(), HPAPermissions.Name, metav1.DeleteOptions{})
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// Run application that exports the metric
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_, err = createSDExporterPods(f, kubeClient)
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if err != nil {
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framework.Failf("Failed to create stackdriver-exporter pod: %s", err)
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}
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defer cleanupSDExporterPod(f, kubeClient)
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// Wait a short amount of time to create a pod and export some metrics
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// TODO: add some events to wait for instead of fixed amount of time
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// i.e. pod creation, first time series exported
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time.Sleep(60 * time.Second)
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verifyResponsesFromCustomMetricsAPI(f, customMetricsClient, discoveryClient)
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}
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// TODO(kawych): migrate this test to new resource model
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func testExternalMetrics(f *framework.Framework, kubeClient clientset.Interface, externalMetricsClient externalclient.ExternalMetricsClient) {
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projectID := framework.TestContext.CloudConfig.ProjectID
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ctx := context.Background()
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client, err := google.DefaultClient(ctx, gcm.CloudPlatformScope)
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framework.ExpectNoError(err)
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gcmService, err := gcm.NewService(ctx, option.WithHTTPClient(client))
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if err != nil {
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framework.Failf("Failed to create gcm service, %v", err)
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}
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// Set up a cluster: create a custom metric and set up k8s-sd adapter
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err = CreateDescriptors(gcmService, projectID)
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if err != nil {
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framework.Failf("Failed to create metric descriptor: %s", err)
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}
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defer CleanupDescriptors(gcmService, projectID)
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// Both deployments - for old and new resource model - expose External Metrics API.
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err = CreateAdapter(f.Namespace.Name, AdapterForOldResourceModel)
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if err != nil {
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framework.Failf("Failed to set up: %s", err)
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}
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defer CleanupAdapter(f.Namespace.Name, AdapterForOldResourceModel)
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_, err = kubeClient.RbacV1().ClusterRoleBindings().Create(context.TODO(), HPAPermissions, metav1.CreateOptions{})
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if err != nil {
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framework.Failf("Failed to create ClusterRoleBindings: %v", err)
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}
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defer kubeClient.RbacV1().ClusterRoleBindings().Delete(context.TODO(), HPAPermissions.Name, metav1.DeleteOptions{})
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// Run application that exports the metric
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pod, err := createSDExporterPods(f, kubeClient)
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if err != nil {
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framework.Failf("Failed to create stackdriver-exporter pod: %s", err)
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}
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defer cleanupSDExporterPod(f, kubeClient)
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// Wait a short amount of time to create a pod and export some metrics
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// TODO: add some events to wait for instead of fixed amount of time
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// i.e. pod creation, first time series exported
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time.Sleep(60 * time.Second)
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verifyResponseFromExternalMetricsAPI(f, externalMetricsClient, pod)
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}
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func verifyResponsesFromCustomMetricsAPI(f *framework.Framework, customMetricsClient customclient.CustomMetricsClient, discoveryClient *discovery.DiscoveryClient) {
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resources, err := discoveryClient.ServerResourcesForGroupVersion("custom.metrics.k8s.io/v1beta1")
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if err != nil {
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framework.Failf("Failed to retrieve a list of supported metrics: %s", err)
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}
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if !containsResource(resources.APIResources, "*/custom.googleapis.com|"+CustomMetricName) {
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framework.Failf("Metric '%s' expected but not received", CustomMetricName)
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}
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if !containsResource(resources.APIResources, "*/custom.googleapis.com|"+UnusedMetricName) {
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framework.Failf("Metric '%s' expected but not received", UnusedMetricName)
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}
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value, err := customMetricsClient.NamespacedMetrics(f.Namespace.Name).GetForObject(schema.GroupKind{Group: "", Kind: "Pod"}, stackdriverExporterPod1, CustomMetricName, labels.NewSelector())
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if err != nil {
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framework.Failf("Failed query: %s", err)
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}
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if value.Value.Value() != CustomMetricValue {
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framework.Failf("Unexpected metric value for metric %s: expected %v but received %v", CustomMetricName, CustomMetricValue, value.Value)
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}
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filter, err := labels.NewRequirement("name", selection.Equals, []string{stackdriverExporterLabel})
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if err != nil {
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framework.Failf("Couldn't create a label filter")
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}
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values, err := customMetricsClient.NamespacedMetrics(f.Namespace.Name).GetForObjects(schema.GroupKind{Group: "", Kind: "Pod"}, labels.NewSelector().Add(*filter), CustomMetricName, labels.NewSelector())
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if err != nil {
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framework.Failf("Failed query: %s", err)
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}
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if len(values.Items) != 1 {
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framework.Failf("Expected results for exactly 1 pod, but %v results received", len(values.Items))
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}
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if values.Items[0].DescribedObject.Name != stackdriverExporterPod1 || values.Items[0].Value.Value() != CustomMetricValue {
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framework.Failf("Unexpected metric value for metric %s and pod %s: %v", CustomMetricName, values.Items[0].DescribedObject.Name, values.Items[0].Value.Value())
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}
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}
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func containsResource(resourcesList []metav1.APIResource, resourceName string) bool {
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for _, resource := range resourcesList {
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if resource.Name == resourceName {
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return true
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}
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}
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return false
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}
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func verifyResponseFromExternalMetricsAPI(f *framework.Framework, externalMetricsClient externalclient.ExternalMetricsClient, pod *v1.Pod) {
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req1, _ := labels.NewRequirement("resource.type", selection.Equals, []string{"gke_container"})
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// It's important to filter out only metrics from the right namespace, since multiple e2e tests
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// may run in the same project concurrently. "dummy" is added to test
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req2, _ := labels.NewRequirement("resource.labels.pod_id", selection.In, []string{string(pod.UID), "dummy"})
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req3, _ := labels.NewRequirement("resource.labels.namespace_id", selection.Exists, []string{})
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req4, _ := labels.NewRequirement("resource.labels.zone", selection.NotEquals, []string{"dummy"})
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req5, _ := labels.NewRequirement("resource.labels.cluster_name", selection.NotIn, []string{"foo", "bar"})
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values, err := externalMetricsClient.
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NamespacedMetrics("dummy").
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List("custom.googleapis.com|"+CustomMetricName, labels.NewSelector().Add(*req1, *req2, *req3, *req4, *req5))
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if err != nil {
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framework.Failf("Failed query: %s", err)
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}
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if len(values.Items) != 1 {
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framework.Failf("Expected exactly one external metric value, but % values received", len(values.Items))
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}
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if values.Items[0].MetricName != "custom.googleapis.com|"+CustomMetricName ||
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values.Items[0].Value.Value() != CustomMetricValue ||
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// Check one label just to make sure labels are included
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values.Items[0].MetricLabels["resource.labels.pod_id"] != string(pod.UID) {
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framework.Failf("Unexpected result for metric %s: %v", CustomMetricName, values.Items[0])
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}
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}
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func cleanupSDExporterPod(f *framework.Framework, cs clientset.Interface) {
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err := cs.CoreV1().Pods(f.Namespace.Name).Delete(context.TODO(), stackdriverExporterPod1, metav1.DeleteOptions{})
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if err != nil {
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framework.Logf("Failed to delete %s pod: %v", stackdriverExporterPod1, err)
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}
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err = cs.CoreV1().Pods(f.Namespace.Name).Delete(context.TODO(), stackdriverExporterPod2, metav1.DeleteOptions{})
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if err != nil {
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framework.Logf("Failed to delete %s pod: %v", stackdriverExporterPod2, err)
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}
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}
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func createSDExporterPods(f *framework.Framework, cs clientset.Interface) (*v1.Pod, error) {
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pod, err := cs.CoreV1().Pods(f.Namespace.Name).Create(context.TODO(), StackdriverExporterPod(stackdriverExporterPod1, f.Namespace.Name, stackdriverExporterLabel, CustomMetricName, CustomMetricValue), metav1.CreateOptions{})
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if err != nil {
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return nil, err
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}
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_, err = cs.CoreV1().Pods(f.Namespace.Name).Create(context.TODO(), StackdriverExporterPod(stackdriverExporterPod2, f.Namespace.Name, stackdriverExporterLabel, UnusedMetricName, UnusedMetricValue), metav1.CreateOptions{})
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return pod, err
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}
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