metrics_grabber.go

Documentation: k8s.io/kubernetes/test/e2e/instrumentation/monitoring

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package monitoring
    18  
    19  import (
    20  	"context"
    21  	"errors"
    22  	"fmt"
    23  	"time"
    24  
    25  	"github.com/onsi/ginkgo/v2"
    26  	"github.com/onsi/gomega"
    27  	clientset "k8s.io/client-go/kubernetes"
    28  
    29  	"k8s.io/kubernetes/test/e2e/framework"
    30  	e2emetrics "k8s.io/kubernetes/test/e2e/framework/metrics"
    31  	e2enode "k8s.io/kubernetes/test/e2e/framework/node"
    32  	e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
    33  	instrumentation "k8s.io/kubernetes/test/e2e/instrumentation/common"
    34  	admissionapi "k8s.io/pod-security-admission/api"
    35  )
    36  
    37  var _ = instrumentation.SIGDescribe("MetricsGrabber", func() {
    38  	f := framework.NewDefaultFramework("metrics-grabber")
    39  	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
    40  	var c, ec clientset.Interface
    41  	var grabber *e2emetrics.Grabber
    42  	ginkgo.BeforeEach(func(ctx context.Context) {
    43  		var err error
    44  		c = f.ClientSet
    45  		ec = f.KubemarkExternalClusterClientSet
    46  		gomega.Eventually(ctx, func() error {
    47  			grabber, err = e2emetrics.NewMetricsGrabber(ctx, c, ec, f.ClientConfig(), true, true, true, true, true, true)
    48  			if err != nil {
    49  				return fmt.Errorf("failed to create metrics grabber: %w", err)
    50  			}
    51  			return nil
    52  		}, 5*time.Minute, 10*time.Second).Should(gomega.BeNil())
    53  	})
    54  
    55  	ginkgo.It("should grab all metrics from API server.", func(ctx context.Context) {
    56  		ginkgo.By("Connecting to /metrics endpoint")
    57  		response, err := grabber.GrabFromAPIServer(ctx)
    58  		if errors.Is(err, e2emetrics.MetricsGrabbingDisabledError) {
    59  			e2eskipper.Skipf("%v", err)
    60  		}
    61  		framework.ExpectNoError(err)
    62  		gomega.Expect(response).NotTo(gomega.BeEmpty())
    63  	})
    64  
    65  	ginkgo.It("should grab all metrics from a Kubelet.", func(ctx context.Context) {
    66  		ginkgo.By("Proxying to Node through the API server")
    67  		node, err := e2enode.GetRandomReadySchedulableNode(ctx, f.ClientSet)
    68  		if errors.Is(err, e2emetrics.MetricsGrabbingDisabledError) {
    69  			e2eskipper.Skipf("%v", err)
    70  		}
    71  		framework.ExpectNoError(err)
    72  		response, err := grabber.GrabFromKubelet(ctx, node.Name)
    73  		framework.ExpectNoError(err)
    74  		gomega.Expect(response).NotTo(gomega.BeEmpty())
    75  	})
    76  
    77  	ginkgo.It("should grab all metrics from a Scheduler.", func(ctx context.Context) {
    78  		ginkgo.By("Proxying to Pod through the API server")
    79  		response, err := grabber.GrabFromScheduler(ctx)
    80  		if errors.Is(err, e2emetrics.MetricsGrabbingDisabledError) {
    81  			e2eskipper.Skipf("%v", err)
    82  		}
    83  		framework.ExpectNoError(err)
    84  		gomega.Expect(response).NotTo(gomega.BeEmpty())
    85  	})
    86  
    87  	ginkgo.It("should grab all metrics from a ControllerManager.", func(ctx context.Context) {
    88  		ginkgo.By("Proxying to Pod through the API server")
    89  		response, err := grabber.GrabFromControllerManager(ctx)
    90  		if errors.Is(err, e2emetrics.MetricsGrabbingDisabledError) {
    91  			e2eskipper.Skipf("%v", err)
    92  		}
    93  		framework.ExpectNoError(err)
    94  		gomega.Expect(response).NotTo(gomega.BeEmpty())
    95  	})
    96  
    97  	ginkgo.It("should grab all metrics slis from API server.", func(ctx context.Context) {
    98  		ginkgo.By("Connecting to /metrics/slis endpoint")
    99  		response, err := grabber.GrabMetricsSLIsFromAPIServer(ctx)
   100  		if errors.Is(err, e2emetrics.MetricsGrabbingDisabledError) {
   101  			e2eskipper.Skipf("%v", err)
   102  		}
   103  		framework.ExpectNoError(err)
   104  		gomega.Expect(response).NotTo(gomega.BeEmpty())
   105  	})
   106  })
   107
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