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Added e2e test for cluster autoslaer for gke with multiple node-pools. #27351

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Jun 14, 2016
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Added e2e test for cluster autoslaer for gke with multiple node-pools. #27351

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76 changes: 50 additions & 26 deletions test/e2e/cluster_size_autoscaling.go
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,6 @@ const (
scaleDownTimeout = 15 * time.Minute

gkeEndpoint = "https://test-container.sandbox.googleapis.com"
zone = "us-central1-b"
gkeUpdateTimeout = 10 * time.Minute
)

Expand All @@ -57,14 +56,6 @@ var _ = framework.KubeDescribe("Cluster size autoscaling [Slow]", func() {
BeforeEach(func() {
c = f.Client
framework.SkipUnlessProviderIs("gce", "gke")
if framework.ProviderIs("gke") {
val, err := isAutoscalerEnabled()
framework.ExpectNoError(err)
if !val {
err = enableAutoscaler()
framework.ExpectNoError(err)
}
}

nodes := framework.GetReadySchedulableNodesOrDie(f.Client)
nodeCount = len(nodes.Items)
Expand All @@ -84,6 +75,15 @@ var _ = framework.KubeDescribe("Cluster size autoscaling [Slow]", func() {
sum += size
}
Expect(nodeCount).Should(Equal(sum))

if framework.ProviderIs("gke") {
val, err := isAutoscalerEnabled()
framework.ExpectNoError(err)
if !val {
err = enableAutoscaler()
framework.ExpectNoError(err)
}
}
})

AfterEach(func() {
Expand Down Expand Up @@ -139,23 +139,6 @@ var _ = framework.KubeDescribe("Cluster size autoscaling [Slow]", func() {
framework.ExpectNoError(waitForAllCaPodsReadyInNamespace(f, c))
})

It("should correctly scale down after a node is not needed [Feature:ClusterSizeAutoscalingScaleDown]", func() {
By("Manually increase cluster size")
increasedSize := 0
newSizes := make(map[string]int)
for key, val := range originalSizes {
newSizes[key] = val + 2
increasedSize += val + 2
}
setMigSizes(newSizes)
framework.ExpectNoError(WaitForClusterSizeFunc(f.Client,
func(size int) bool { return size >= increasedSize }, scaleUpTimeout))

By("Some node should be removed")
framework.ExpectNoError(WaitForClusterSizeFunc(f.Client,
func(size int) bool { return size < increasedSize }, scaleDownTimeout))
})

It("should add node to the particular mig [Feature:ClusterSizeAutoscalingScaleUp]", func() {
labels := map[string]string{"cluster-autoscaling-test.special-node": "true"}

Expand Down Expand Up @@ -210,6 +193,47 @@ var _ = framework.KubeDescribe("Cluster size autoscaling [Slow]", func() {
framework.ExpectNoError(waitForAllCaPodsReadyInNamespace(f, c))
framework.ExpectNoError(framework.DeleteRC(f.Client, f.Namespace.Name, "node-selector"))
})

It("should scale up correct target pool [Feature:ClusterSizeAutoscalingScaleUp]", func() {
framework.SkipUnlessProviderIs("gke")

By("Creating new node-pool with one n1-standard-4 machine")
output, err := exec.Command("gcloud", "alpha", "container", "node-pools", "create", "extra-pool", "--quiet",
"--machine-type=n1-standard-4",
"--num-nodes=1",
"--project="+framework.TestContext.CloudConfig.ProjectID,
"--zone="+framework.TestContext.CloudConfig.Zone,
"--cluster="+framework.TestContext.CloudConfig.Cluster).CombinedOutput()
defer exec.Command("gcloud", "alpha", "container", "node-pools", "delete", "extra-pool", "--quiet",
"--project="+framework.TestContext.CloudConfig.ProjectID,
"--zone="+framework.TestContext.CloudConfig.Zone,
"--cluster="+framework.TestContext.CloudConfig.Cluster).CombinedOutput()
framework.ExpectNoError(err)
glog.Infof("Creating node-pool: %s", output)
framework.ExpectNoError(framework.WaitForClusterSize(c, nodeCount+1, resizeTimeout))

By("Creating rc with 2 pods too big to fit default-pool but fitting extra-pool")
ReserveMemory(f, "memory-reservation", 2, 2*memCapacityMb, false)
defer framework.DeleteRC(f.Client, f.Namespace.Name, "memory-reservation")
framework.ExpectNoError(framework.WaitForClusterSize(c, nodeCount+2, scaleUpTimeout))
})

It("should correctly scale down after a node is not needed [Feature:ClusterSizeAutoscalingScaleDown]", func() {
By("Manually increase cluster size")
increasedSize := 0
newSizes := make(map[string]int)
for key, val := range originalSizes {
newSizes[key] = val + 2
increasedSize += val + 2
}
setMigSizes(newSizes)
framework.ExpectNoError(WaitForClusterSizeFunc(f.Client,
func(size int) bool { return size >= increasedSize }, scaleUpTimeout))

By("Some node should be removed")
framework.ExpectNoError(WaitForClusterSizeFunc(f.Client,
func(size int) bool { return size < increasedSize }, scaleDownTimeout))
})
})

func getGKEClusterUrl() string {
Expand Down