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Move wait for pressure to subside to AfterEach so we still wait if the test for eviction order fails

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This commit is contained in:
Michael Taufen 2016-09-01 12:41:46 -07:00
parent f673bc8840
commit 3ad9a1e423
1 changed files with 63 additions and 59 deletions
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122
test/e2e_node/memory_eviction_test.go
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@ -37,66 +37,9 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
f := framework.NewDefaultFramework("eviction-test")
Context("when there is memory pressure", func() {
It("should evict pods in the correct order (besteffort first, then burstable, then guaranteed)", func() {
By("creating a guaranteed pod, a burstable pod, and a besteffort pod.")
// A pod is guaranteed only when requests and limits are specified for all the containers and they are equal.
guaranteed := createMemhogPod(f, "guaranteed-", "guaranteed", api.ResourceRequirements{
Requests: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
},
Limits: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
}})
// A pod is burstable if limits and requests do not match across all containers.
burstable := createMemhogPod(f, "burstable-", "burstable", api.ResourceRequirements{
Requests: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
}})
// A pod is besteffort if none of its containers have specified any requests or limits.
besteffort := createMemhogPod(f, "besteffort-", "besteffort", api.ResourceRequirements{})
// We poll until timeout or all pods are killed.
// Inside the func, we check that all pods are in a valid phase with
// respect to the eviction order of best effort, then burstable, then guaranteed.
By("polling the Status.Phase of each pod and checking for violations of the eviction order.")
Eventually(func() error {
gteed, gtErr := f.Client.Pods(f.Namespace.Name).Get(guaranteed.Name)
framework.ExpectNoError(gtErr, fmt.Sprintf("getting pod %s", guaranteed.Name))
gteedPh := gteed.Status.Phase
burst, buErr := f.Client.Pods(f.Namespace.Name).Get(burstable.Name)
framework.ExpectNoError(buErr, fmt.Sprintf("getting pod %s", burstable.Name))
burstPh := burst.Status.Phase
best, beErr := f.Client.Pods(f.Namespace.Name).Get(besteffort.Name)
framework.ExpectNoError(beErr, fmt.Sprintf("getting pod %s", besteffort.Name))
bestPh := best.Status.Phase
glog.Infof("pod phase: guaranteed: %v, burstable: %v, besteffort: %v", gteedPh, burstPh, bestPh)
if bestPh == api.PodRunning {
Expect(burstPh).NotTo(Equal(api.PodFailed), "burstable pod failed before best effort pod")
Expect(gteedPh).NotTo(Equal(api.PodFailed), "guaranteed pod failed before best effort pod")
} else if burstPh == api.PodRunning {
Expect(gteedPh).NotTo(Equal(api.PodFailed), "guaranteed pod failed before burstable pod")
}
// When both besteffort and burstable have been evicted, the test has completed.
if bestPh == api.PodFailed && burstPh == api.PodFailed {
return nil
}
return fmt.Errorf("besteffort and burstable have not yet both been evicted.")
}, 60*time.Minute, 5*time.Second).Should(BeNil())
AfterEach(func() {
// Wait for the memory pressure condition to disappear from the node status before continuing.
By("waiting for the memory pressure condition on the node to disappear before ending the test.")
Eventually(func() error {
nodeList, err := f.Client.Nodes().List(api.ListOptions{})
if err != nil {
@ -167,6 +110,67 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
},
})
})
It("should evict pods in the correct order (besteffort first, then burstable, then guaranteed)", func() {
By("creating a guaranteed pod, a burstable pod, and a besteffort pod.")
// A pod is guaranteed only when requests and limits are specified for all the containers and they are equal.
guaranteed := createMemhogPod(f, "guaranteed-", "guaranteed", api.ResourceRequirements{
Requests: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
},
Limits: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
}})
// A pod is burstable if limits and requests do not match across all containers.
burstable := createMemhogPod(f, "burstable-", "burstable", api.ResourceRequirements{
Requests: api.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
}})
// A pod is besteffort if none of its containers have specified any requests or limits.
besteffort := createMemhogPod(f, "besteffort-", "besteffort", api.ResourceRequirements{})
// We poll until timeout or all pods are killed.
// Inside the func, we check that all pods are in a valid phase with
// respect to the eviction order of best effort, then burstable, then guaranteed.
By("polling the Status.Phase of each pod and checking for violations of the eviction order.")
Eventually(func() error {
gteed, gtErr := f.Client.Pods(f.Namespace.Name).Get(guaranteed.Name)
framework.ExpectNoError(gtErr, fmt.Sprintf("getting pod %s", guaranteed.Name))
gteedPh := gteed.Status.Phase
burst, buErr := f.Client.Pods(f.Namespace.Name).Get(burstable.Name)
framework.ExpectNoError(buErr, fmt.Sprintf("getting pod %s", burstable.Name))
burstPh := burst.Status.Phase
best, beErr := f.Client.Pods(f.Namespace.Name).Get(besteffort.Name)
framework.ExpectNoError(beErr, fmt.Sprintf("getting pod %s", besteffort.Name))
bestPh := best.Status.Phase
glog.Infof("pod phase: guaranteed: %v, burstable: %v, besteffort: %v", gteedPh, burstPh, bestPh)
if bestPh == api.PodRunning {
Expect(burstPh).NotTo(Equal(api.PodFailed), "burstable pod failed before best effort pod")
Expect(gteedPh).NotTo(Equal(api.PodFailed), "guaranteed pod failed before best effort pod")
} else if burstPh == api.PodRunning {
Expect(gteedPh).NotTo(Equal(api.PodFailed), "guaranteed pod failed before burstable pod")
}
// When both besteffort and burstable have been evicted, the test has completed.
if bestPh == api.PodFailed && burstPh == api.PodFailed {
return nil
}
return fmt.Errorf("besteffort and burstable have not yet both been evicted.")
}, 60*time.Minute, 5*time.Second).Should(BeNil())
})
})
})