/
metrics.go
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/
metrics.go
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/*
Copyright 2020 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
* resource-topology-exporter specific tests
*/
package rte
import (
"context"
"fmt"
"strings"
"time"
"k8s.io/klog/v2"
"github.com/onsi/ginkgo/v2"
"github.com/onsi/gomega"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/fixture"
e2enodes "github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/nodes"
e2epods "github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/pods"
e2ertepod "github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/pods/rtepod"
"github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/remoteexec"
e2econsts "github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/testconsts"
e2etestenv "github.com/k8stopologyawareschedwg/resource-topology-exporter/test/e2e/utils/testenv"
)
var _ = ginkgo.Describe("[RTE][Monitoring] metrics", func() {
var (
initialized bool
hasMetrics bool
metricsMode string
metricsPort int
metricsAddress string
rtePod *corev1.Pod
workerNodes []corev1.Node
topologyUpdaterNode *corev1.Node
)
f := fixture.New()
ginkgo.BeforeEach(func() {
var err error
nsCleanup, err := f.CreateNamespace("metrics")
gomega.Expect(err).ToNot(gomega.HaveOccurred())
ginkgo.DeferCleanup(nsCleanup)
if !initialized {
hasMetrics, metricsMode = e2etestenv.GetMetricsMode()
workerNodes, err = e2enodes.GetWorkerNodes(f.K8SCli)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
gomega.Expect(workerNodes).ToNot(gomega.BeEmpty())
// pick any worker node. The (implicit, TODO: make explicit) assumption is
// the daemonset runs on CI on all the worker nodes.
var hasLabel bool
topologyUpdaterNode, hasLabel = e2enodes.PickTargetNode(workerNodes)
gomega.Expect(topologyUpdaterNode).ToNot(gomega.BeNil())
if !hasLabel {
// during the e2e tests we expect changes on the node topology.
// but in an environment with multiple worker nodes, we might be looking at the wrong node.
// thus, we assign a unique label to the picked worker node
// and making sure to deploy the pod on it during the test using nodeSelector
err = e2enodes.LabelNode(f.K8SCli, topologyUpdaterNode, map[string]string{e2econsts.TestNodeLabel: ""})
gomega.Expect(err).ToNot(gomega.HaveOccurred())
}
var pods *corev1.PodList
sel, err := labels.Parse(fmt.Sprintf("name=%s", e2etestenv.RTELabelName))
gomega.Expect(err).ToNot(gomega.HaveOccurred())
pods, err = f.K8SCli.CoreV1().Pods(e2etestenv.GetNamespaceName()).List(context.TODO(), metav1.ListOptions{LabelSelector: sel.String()})
gomega.Expect(err).ToNot(gomega.HaveOccurred())
gomega.Expect(len(pods.Items)).ToNot(gomega.BeZero())
rtePod = &pods.Items[0]
if hasMetrics {
metricsAddress, err = e2ertepod.FindMetricsAddress(rtePod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
metricsPort, err = e2ertepod.FindMetricsPort(rtePod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
}
initialized = true
}
})
ginkgo.Context("With prometheus endpoint configured", func() {
ginkgo.BeforeEach(func() {
if !hasMetrics {
ginkgo.Skip("metrics disabled")
}
})
ginkgo.It("[EventChain] should have some metrics exported over https", func() {
if metricsMode != "httptls" {
ginkgo.Skip("this test requires serving metrics over https")
}
rteContainerName, err := e2ertepod.FindRTEContainerName(rtePod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
cmd := []string{"curl", "-v", "-k", "-L", fmt.Sprintf("https://%s:%d/metrics", metricsAddress, metricsPort)}
key := client.ObjectKeyFromObject(rtePod)
klog.Infof("executing cmd: %s on pod %q", cmd, key.String())
var stdout, stderr []byte
gomega.Eventually(func() bool {
var err error
stdout, stderr, err = remoteexec.CommandOnPod(f.Ctx, f.K8SCli, rtePod, rteContainerName, cmd...)
gomega.Expect(err).ToNot(gomega.HaveOccurred(), "failed exec command on pod. pod=%q; cmd=%q; err=%v; stderr=%q", key.String(), cmd, err, stderr)
return strings.Contains(string(stdout), "operation_delay") &&
strings.Contains(string(stdout), "wakeup_delay")
}).WithPolling(10*time.Second).WithTimeout(3*time.Minute).Should(gomega.BeTrue(), "failed to get metrics from pod\nstdout=%q\nstderr=%q\n", stdout, stderr)
})
ginkgo.It("[EventChain] should have some metrics exported over plain http", func() {
if metricsMode != "http" {
ginkgo.Skip("this test requires serving metrics over plain http")
}
rteContainerName, err := e2ertepod.FindRTEContainerName(rtePod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
cmd := []string{"curl", "-v", "-L", fmt.Sprintf("http://%s:%d/metrics", metricsAddress, metricsPort)}
key := client.ObjectKeyFromObject(rtePod)
klog.Infof("executing cmd: %s on pod %q", cmd, key.String())
var stdout, stderr []byte
gomega.Eventually(func() bool {
var err error
stdout, stderr, err = remoteexec.CommandOnPod(f.Ctx, f.K8SCli, rtePod, rteContainerName, cmd...)
gomega.Expect(err).ToNot(gomega.HaveOccurred(), "failed exec command on pod. pod=%q; cmd=%q; err=%v; stderr=%q", key.String(), cmd, err, stderr)
return strings.Contains(string(stdout), "operation_delay") &&
strings.Contains(string(stdout), "wakeup_delay")
}).WithPolling(10*time.Second).WithTimeout(3*time.Minute).Should(gomega.BeTrue(), "failed to get metrics from pod\nstdout=%q\nstderr=%q\n", stdout, stderr)
})
ginkgo.It("[release] it should report noderesourcetopology writes", func() {
if metricsMode != "http" {
ginkgo.Skip("this test requires serving metrics over plain http")
}
nodes, err := e2enodes.FilterNodesWithEnoughCores(workerNodes, "1000m")
gomega.Expect(err).ToNot(gomega.HaveOccurred())
if len(nodes) < 1 {
ginkgo.Skip("not enough allocatable cores for this test")
}
dumpPods(f.K8SCli, topologyUpdaterNode.Name, "reference pods")
sleeperPod := e2epods.MakeGuaranteedSleeperPod("1000m")
pod, err := e2epods.CreateSync(f, sleeperPod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
ginkgo.DeferCleanup(e2epods.DeletePodSyncByName, f, pod.Namespace, pod.Name)
// now we are sure we have at least a write to be reported
rteContainerName, err := e2ertepod.FindRTEContainerName(rtePod)
gomega.Expect(err).ToNot(gomega.HaveOccurred())
cmd := []string{"curl", "-v", "-L", fmt.Sprintf("http://%s:%d/metrics", metricsAddress, metricsPort)}
key := client.ObjectKeyFromObject(rtePod)
klog.Infof("executing cmd: %s on pod %q", cmd, key.String())
var stdout, stderr []byte
gomega.Eventually(func() bool {
var err error
stdout, stderr, err = remoteexec.CommandOnPod(f.Ctx, f.K8SCli, rtePod, rteContainerName, cmd...)
gomega.Expect(err).ToNot(gomega.HaveOccurred(), "failed exec command on pod. pod=%q; cmd=%q; err=%v; stderr=%q", key.String(), cmd, err, stderr)
return strings.Contains(string(stdout), "noderesourcetopology_writes_total")
}).WithPolling(10*time.Second).WithTimeout(2*time.Minute).Should(gomega.BeTrue(), "failed to get metrics from pod\nstdout=%q\nstderr=%q\n", stdout, stderr)
})
})
})