mirror of https://github.com/k3s-io/k3s
100 lines
3.0 KiB
Go
100 lines
3.0 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 upgrades
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import (
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"fmt"
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"time"
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autoscalingv1 "k8s.io/api/autoscaling/v1"
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"k8s.io/kubernetes/test/e2e/common"
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"k8s.io/kubernetes/test/e2e/framework"
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"github.com/onsi/ginkgo"
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)
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// HPAUpgradeTest tests that HPA rescales target resource correctly before and after a cluster upgrade.
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type HPAUpgradeTest struct {
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rc *common.ResourceConsumer
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hpa *autoscalingv1.HorizontalPodAutoscaler
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}
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// Name returns the tracking name of the test.
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func (HPAUpgradeTest) Name() string { return "hpa-upgrade" }
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// Setup creates a resource consumer and an HPA object that autoscales the consumer.
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func (t *HPAUpgradeTest) Setup(f *framework.Framework) {
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t.rc = common.NewDynamicResourceConsumer(
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"res-cons-upgrade",
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f.Namespace.Name,
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common.KindRC,
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1, /* replicas */
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250, /* initCPUTotal */
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0,
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0,
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500, /* cpuLimit */
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200, /* memLimit */
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f.ClientSet,
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f.ScalesGetter)
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t.hpa = common.CreateCPUHorizontalPodAutoscaler(
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t.rc,
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20, /* targetCPUUtilizationPercent */
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1, /* minPods */
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5) /* maxPods */
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t.rc.Pause()
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t.test()
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}
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// Test waits for upgrade to complete and verifies if HPA works correctly.
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func (t *HPAUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
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// Block until upgrade is done
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ginkgo.By(fmt.Sprintf("Waiting for upgrade to finish before checking HPA"))
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<-done
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t.test()
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}
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// Teardown cleans up any remaining resources.
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func (t *HPAUpgradeTest) Teardown(f *framework.Framework) {
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// rely on the namespace deletion to clean up everything
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common.DeleteHorizontalPodAutoscaler(t.rc, t.hpa.Name)
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t.rc.CleanUp()
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}
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func (t *HPAUpgradeTest) test() {
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const timeToWait = 15 * time.Minute
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t.rc.Resume()
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ginkgo.By(fmt.Sprintf("HPA scales to 1 replica: consume 10 millicores, target per pod 100 millicores, min pods 1."))
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t.rc.ConsumeCPU(10) /* millicores */
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ginkgo.By(fmt.Sprintf("HPA waits for 1 replica"))
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t.rc.WaitForReplicas(1, timeToWait)
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ginkgo.By(fmt.Sprintf("HPA scales to 3 replicas: consume 250 millicores, target per pod 100 millicores."))
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t.rc.ConsumeCPU(250) /* millicores */
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ginkgo.By(fmt.Sprintf("HPA waits for 3 replicas"))
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t.rc.WaitForReplicas(3, timeToWait)
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ginkgo.By(fmt.Sprintf("HPA scales to 5 replicas: consume 700 millicores, target per pod 100 millicores, max pods 5."))
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t.rc.ConsumeCPU(700) /* millicores */
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ginkgo.By(fmt.Sprintf("HPA waits for 5 replicas"))
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t.rc.WaitForReplicas(5, timeToWait)
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// We need to pause background goroutines as during upgrade master is unavailable and requests issued by them fail.
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t.rc.Pause()
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}
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