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Merge pull request #48072 from MaciekPytel/ca_scale_to_0_e2e

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Add e2e for cluster-autoscaler scale-up from 0

Ref: https://github.com/kubernetes/autoscaler/issues/43
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Kubernetes Submit Queue 2017-06-27 03:35:34 -07:00 committed by GitHub
commit 0e509854c7
1 changed files with 39 additions and 0 deletions
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39
test/e2e/autoscaling/cluster_size_autoscaling.go
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@ -447,6 +447,45 @@ var _ = framework.KubeDescribe("Cluster size autoscaling [Slow]", func() {
})
})
It("Should be able to scale a node group up from 0[Feature:ClusterSizeAutoscalingScaleUp]", func() {
framework.SkipUnlessAtLeast(len(originalSizes), 2, "At least 2 node groups are needed for scale-to-0 tests")
By("Manually scale smallest node group to 0")
minMig := ""
minSize := nodeCount
for mig, size := range originalSizes {
if size <= minSize {
minMig = mig
minSize = size
}
}
err := framework.ResizeGroup(minMig, int32(0))
framework.ExpectNoError(err)
framework.ExpectNoError(framework.WaitForClusterSize(c, nodeCount-minSize, resizeTimeout))
By("Make remaining nodes unschedulable")
nodes, err := f.ClientSet.Core().Nodes().List(metav1.ListOptions{FieldSelector: fields.Set{
"spec.unschedulable": "false",
}.AsSelector().String()})
for _, node := range nodes.Items {
err = makeNodeUnschedulable(f.ClientSet, &node)
defer func(n v1.Node) {
makeNodeSchedulable(f.ClientSet, &n)
}(node)
framework.ExpectNoError(err)
}
By("Run a scale-up test")
ReserveMemory(f, "memory-reservation", 1, 100, false, 1*time.Second)
defer framework.DeleteRCAndPods(f.ClientSet, f.InternalClientset, f.Namespace.Name, "memory-reservation")
// Verify that cluster size is increased
framework.ExpectNoError(WaitForClusterSizeFunc(f.ClientSet,
func(size int) bool { return size >= len(nodes.Items)+1 }, scaleUpTimeout))
framework.ExpectNoError(waitForAllCaPodsReadyInNamespace(f, c))
})
It("Shouldn't perform scale up operation and should list unhealthy status if most of the cluster is broken[Feature:ClusterSizeAutoscalingScaleUp]", func() {
clusterSize := nodeCount
for clusterSize < unhealthyClusterThreshold+1 {