/
component_monitoring.go
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/
component_monitoring.go
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/*
* This file is part of the KubeVirt project
*
* 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.
*
* Copyright 2023 Red Hat, Inc.
*
*/
package monitoring
import (
"context"
"time"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
appsv1 "k8s.io/api/apps/v1"
k8sv1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/rand"
v1 "kubevirt.io/api/core/v1"
"kubevirt.io/client-go/kubecli"
"kubevirt.io/kubevirt/pkg/apimachinery/patch"
"kubevirt.io/kubevirt/tests"
"kubevirt.io/kubevirt/tests/clientcmd"
"kubevirt.io/kubevirt/tests/decorators"
"kubevirt.io/kubevirt/tests/flags"
"kubevirt.io/kubevirt/tests/framework/kubevirt"
"kubevirt.io/kubevirt/tests/libmonitoring"
"kubevirt.io/kubevirt/tests/libvmifact"
"kubevirt.io/kubevirt/tests/util"
)
type alerts struct {
deploymentName string
downAlert string
noReadyAlert string
restErrorsBurtsAlert string
restErrorsHighAlert string
lowCountAlert string
}
var (
virtApi = alerts{
deploymentName: "virt-api",
downAlert: "VirtAPIDown",
restErrorsBurtsAlert: "VirtApiRESTErrorsBurst",
restErrorsHighAlert: "VirtApiRESTErrorsHigh",
lowCountAlert: "LowVirtAPICount",
}
virtController = alerts{
deploymentName: "virt-controller",
downAlert: "VirtControllerDown",
noReadyAlert: "NoReadyVirtController",
restErrorsBurtsAlert: "VirtControllerRESTErrorsBurst",
restErrorsHighAlert: "VirtControllerRESTErrorsHigh",
lowCountAlert: "LowVirtControllersCount",
}
virtHandler = alerts{
deploymentName: "virt-handler",
restErrorsBurtsAlert: "VirtHandlerRESTErrorsBurst",
restErrorsHighAlert: "VirtHandlerRESTErrorsHigh",
}
virtOperator = alerts{
deploymentName: "virt-operator",
downAlert: "VirtOperatorDown",
noReadyAlert: "NoReadyVirtOperator",
restErrorsBurtsAlert: "VirtOperatorRESTErrorsBurst",
restErrorsHighAlert: "VirtOperatorRESTErrorsHigh",
lowCountAlert: "LowVirtOperatorCount",
}
)
var _ = Describe("[Serial][sig-monitoring]Component Monitoring", Serial, decorators.SigMonitoring, func() {
var err error
var virtClient kubecli.KubevirtClient
var scales *libmonitoring.Scaling
BeforeEach(func() {
virtClient = kubevirt.Client()
})
increaseRateLimit := func() {
rateLimitConfig := &v1.ReloadableComponentConfiguration{
RestClient: &v1.RESTClientConfiguration{
RateLimiter: &v1.RateLimiter{
TokenBucketRateLimiter: &v1.TokenBucketRateLimiter{
Burst: 300,
QPS: 300,
},
},
},
}
originalKubeVirt := util.GetCurrentKv(virtClient)
originalKubeVirt.Spec.Configuration.ControllerConfiguration = rateLimitConfig
originalKubeVirt.Spec.Configuration.HandlerConfiguration = rateLimitConfig
tests.UpdateKubeVirtConfigValueAndWait(originalKubeVirt.Spec.Configuration)
}
Context("Up metrics", func() {
BeforeEach(func() {
scales = libmonitoring.NewScaling(virtClient, []string{virtOperator.deploymentName, virtController.deploymentName, virtApi.deploymentName})
scales.UpdateScale(virtOperator.deploymentName, int32(0))
libmonitoring.ReduceAlertPendingTime(virtClient)
})
AfterEach(func() {
scales.RestoreAllScales()
time.Sleep(10 * time.Second)
alerts := []string{
virtOperator.downAlert, virtOperator.noReadyAlert, virtOperator.lowCountAlert,
virtController.downAlert, virtController.noReadyAlert, virtController.lowCountAlert,
virtApi.downAlert, virtApi.noReadyAlert, virtApi.lowCountAlert,
}
libmonitoring.WaitUntilAlertDoesNotExist(virtClient, alerts...)
})
It("VirtOperatorDown and NoReadyVirtOperator should be triggered when virt-operator is down", func() {
libmonitoring.VerifyAlertExist(virtClient, virtOperator.downAlert)
libmonitoring.VerifyAlertExist(virtClient, virtOperator.noReadyAlert)
})
It("LowVirtOperatorCount should be triggered when virt-operator count is low", decorators.RequiresTwoSchedulableNodes, func() {
libmonitoring.VerifyAlertExist(virtClient, virtOperator.lowCountAlert)
})
It("VirtControllerDown and NoReadyVirtController should be triggered when virt-controller is down", func() {
scales.UpdateScale(virtController.deploymentName, int32(0))
libmonitoring.VerifyAlertExist(virtClient, virtController.downAlert)
libmonitoring.VerifyAlertExist(virtClient, virtController.noReadyAlert)
})
It("LowVirtControllersCount should be triggered when virt-controller count is low", decorators.RequiresTwoSchedulableNodes, func() {
scales.UpdateScale(virtController.deploymentName, int32(0))
libmonitoring.VerifyAlertExist(virtClient, virtController.lowCountAlert)
})
It("VirtApiDown should be triggered when virt-api is down", func() {
scales.UpdateScale(virtApi.deploymentName, int32(0))
libmonitoring.VerifyAlertExist(virtClient, virtApi.downAlert)
})
It("LowVirtAPICount should be triggered when virt-api count is low", decorators.RequiresTwoSchedulableNodes, func() {
scales.UpdateScale(virtApi.deploymentName, int32(0))
libmonitoring.VerifyAlertExist(virtClient, virtApi.lowCountAlert)
})
})
Context("Errors metrics", func() {
var crb *rbacv1.ClusterRoleBinding
BeforeEach(func() {
virtClient = kubevirt.Client()
crb, err = virtClient.RbacV1().ClusterRoleBindings().Get(context.Background(), "kubevirt-operator", metav1.GetOptions{})
util.PanicOnError(err)
increaseRateLimit()
scales = libmonitoring.NewScaling(virtClient, []string{virtOperator.deploymentName})
scales.UpdateScale(virtOperator.deploymentName, int32(0))
libmonitoring.ReduceAlertPendingTime(virtClient)
})
AfterEach(func() {
crb.Annotations = nil
crb.ObjectMeta.ResourceVersion = ""
crb.ObjectMeta.UID = ""
_, err = virtClient.RbacV1().ClusterRoleBindings().Create(context.Background(), crb, metav1.CreateOptions{})
if !errors.IsAlreadyExists(err) {
util.PanicOnError(err)
}
scales.RestoreAllScales()
time.Sleep(10 * time.Second)
libmonitoring.WaitUntilAlertDoesNotExist(virtClient, virtOperator.downAlert, virtApi.downAlert, virtController.downAlert, virtHandler.downAlert)
})
It("VirtApiRESTErrorsBurst and VirtApiRESTErrorsHigh should be triggered when requests to virt-api are failing", func() {
randVmName := rand.String(6)
Eventually(func(g Gomega) {
cmd := clientcmd.NewVirtctlCommand("vnc", randVmName)
err := cmd.Execute()
Expect(err).To(HaveOccurred())
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtApi.restErrorsBurtsAlert)).To(BeTrue())
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtApi.restErrorsHighAlert)).To(BeTrue())
}, 5*time.Minute, 500*time.Millisecond).Should(Succeed())
})
It("VirtOperatorRESTErrorsBurst and VirtOperatorRESTErrorsHigh should be triggered when requests to virt-operator are failing", func() {
scales.RestoreScale(virtOperator.deploymentName)
err = virtClient.RbacV1().ClusterRoleBindings().Delete(context.Background(), crb.Name, metav1.DeleteOptions{})
Expect(err).ToNot(HaveOccurred())
Eventually(func(g Gomega) {
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtOperator.restErrorsBurtsAlert)).To(BeTrue())
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtOperator.restErrorsHighAlert)).To(BeTrue())
}, 5*time.Minute, 500*time.Millisecond).Should(Succeed())
})
PIt("VirtControllerRESTErrorsBurst and VirtControllerRESTErrorsHigh should be triggered when requests to virt-controller are failing", func() {
err = virtClient.RbacV1().ClusterRoleBindings().Delete(context.Background(), "kubevirt-controller", metav1.DeleteOptions{})
Expect(err).ToNot(HaveOccurred())
vmi := libvmifact.NewGuestless()
Eventually(func(g Gomega) {
_, _ = virtClient.VirtualMachineInstance(util.NamespaceTestDefault).Create(context.Background(), vmi, metav1.CreateOptions{})
_ = virtClient.VirtualMachineInstance(util.NamespaceTestDefault).Delete(context.Background(), vmi.Name, metav1.DeleteOptions{})
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtController.restErrorsBurtsAlert)).To(BeTrue())
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtController.restErrorsHighAlert)).To(BeTrue())
}, 5*time.Minute, 500*time.Millisecond).Should(Succeed())
})
PIt("VirtHandlerRESTErrorsBurst and VirtHandlerRESTErrorsHigh should be triggered when requests to virt-handler are failing", func() {
err = virtClient.RbacV1().ClusterRoleBindings().Delete(context.Background(), "kubevirt-handler", metav1.DeleteOptions{})
Expect(err).ToNot(HaveOccurred())
vmi := libvmifact.NewGuestless()
Eventually(func(g Gomega) {
_, _ = virtClient.VirtualMachineInstance(util.NamespaceTestDefault).Create(context.Background(), vmi, metav1.CreateOptions{})
_ = virtClient.VirtualMachineInstance(util.NamespaceTestDefault).Delete(context.Background(), vmi.Name, metav1.DeleteOptions{})
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtHandler.restErrorsBurtsAlert)).To(BeTrue())
g.Expect(libmonitoring.CheckAlertExists(virtClient, virtHandler.restErrorsHighAlert)).To(BeTrue())
}, 5*time.Minute, 500*time.Millisecond).Should(Succeed())
})
})
})
func updateDeploymentResourcesRequest(virtClient kubecli.KubevirtClient, deploymentName string, cpu, memory resource.Quantity) {
deployment, err := virtClient.AppsV1().Deployments(flags.KubeVirtInstallNamespace).Get(context.Background(), deploymentName, metav1.GetOptions{})
Expect(err).ToNot(HaveOccurred())
deployment.Spec.Template.Spec.Containers[0].Resources.Requests = k8sv1.ResourceList{
k8sv1.ResourceCPU: cpu,
k8sv1.ResourceMemory: memory,
}
patchDeployment(virtClient, deployment)
}
func patchDeployment(virtClient kubecli.KubevirtClient, deployment *appsv1.Deployment) {
patchOp := patch.PatchOperation{
Op: "replace",
Path: "/spec",
Value: deployment.Spec,
}
payload, err := patch.GeneratePatchPayload(patchOp)
Expect(err).ToNot(HaveOccurred())
_, err = virtClient.AppsV1().Deployments(flags.KubeVirtInstallNamespace).Patch(context.Background(), deployment.Name, types.JSONPatchType, payload, metav1.PatchOptions{})
Expect(err).ToNot(HaveOccurred())
}