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Merge pull request #36972 from rkouj/pd-api-test

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Automatic merge from submit-queue (batch tested with PRs 35805, 36972, 39045)

Add e2e test to detach a pd whose node api object was deleted

**What this PR does / why we need it**:
`E2E Test for:`
If API object representing a node is deleted with a GCE PD still attached to that node, subsequent attempts by the attach/detach controller to detach it should not fail
This commit is contained in:
Kubernetes Submit Queue 2016-12-20 14:52:46 -08:00 committed by GitHub
commit e9a8554cb9
1 changed files with 54 additions and 1 deletions
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55
test/e2e/pd.go
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@ -59,6 +59,7 @@ var _ = framework.KubeDescribe("Pod Disks", func() {
nodeClient v1core.NodeInterface
host0Name types.NodeName
host1Name types.NodeName
nodes *v1.NodeList
)
f := framework.NewDefaultFramework("pod-disks")
@ -67,7 +68,7 @@ var _ = framework.KubeDescribe("Pod Disks", func() {
podClient = f.ClientSet.Core().Pods(f.Namespace.Name)
nodeClient = f.ClientSet.Core().Nodes()
nodes := framework.GetReadySchedulableNodesOrDie(f.ClientSet)
nodes = framework.GetReadySchedulableNodesOrDie(f.ClientSet)
Expect(len(nodes.Items)).To(BeNumerically(">=", 2), "Requires at least 2 nodes")
@ -476,6 +477,58 @@ var _ = framework.KubeDescribe("Pod Disks", func() {
framework.ExpectNoError(WaitForGroupSize(framework.TestContext.CloudConfig.NodeInstanceGroup, int32(initialGroupSize)), "Unable to get back the cluster to inital size")
return
})
It("should be able to detach from a node whose api object was deleted [Slow] [Disruptive]", func() {
framework.SkipUnlessProviderIs("gce")
initialGroupSize, err := GroupSize(framework.TestContext.CloudConfig.NodeInstanceGroup)
framework.ExpectNoError(err, "Error getting group size")
By("Creating a pd")
diskName, err := createPDWithRetry()
framework.ExpectNoError(err, "Error creating a pd")
host0Pod := testPDPod([]string{diskName}, host0Name, false, 1)
originalCount := len(nodes.Items)
containerName := "mycontainer"
nodeToDelete := &nodes.Items[0]
defer func() error {
By("Cleaning up PD-RW test env")
detachAndDeletePDs(diskName, []types.NodeName{host0Name})
nodeToDelete.ObjectMeta.SetResourceVersion("0")
// need to set the resource version or else the Create() fails
_, err := nodeClient.Create(nodeToDelete)
framework.ExpectNoError(err, "Unable to re-create the deleted node")
framework.ExpectNoError(WaitForGroupSize(framework.TestContext.CloudConfig.NodeInstanceGroup, int32(initialGroupSize)), "Unable to get the node group back to the original size")
framework.WaitForNodeToBeReady(f.ClientSet, nodeToDelete.Name, nodeStatusTimeout)
if len(nodes.Items) != originalCount {
return fmt.Errorf("The node count is not back to original count")
}
return nil
}()
By("submitting host0Pod to kubernetes")
_, err = podClient.Create(host0Pod)
framework.ExpectNoError(err, fmt.Sprintf("Failed to create host0pod: %v", err))
framework.ExpectNoError(f.WaitForPodRunningSlow(host0Pod.Name))
testFile := "/testpd1/tracker"
testFileContents := fmt.Sprintf("%v", mathrand.Int())
framework.ExpectNoError(f.WriteFileViaContainer(host0Pod.Name, containerName, testFile, testFileContents))
framework.Logf("Wrote value: %v", testFileContents)
// Verify that disk shows up in node 0's volumeInUse list
framework.ExpectNoError(waitForPDInVolumesInUse(nodeClient, diskName, host0Name, nodeStatusTimeout, true /* should exist*/))
By("deleting api object of host0")
framework.ExpectNoError(nodeClient.Delete(string(host0Name), v1.NewDeleteOptions(0)), "Unable to delete host0")
By("deleting host0pod")
framework.ExpectNoError(podClient.Delete(host0Pod.Name, v1.NewDeleteOptions(0)), "Unable to delete host0Pod")
// The disk should be detached from host0 on its deletion
By("Waiting for pd to detach from host0")
framework.ExpectNoError(waitForPDDetach(diskName, host0Name), "Timed out waiting for detach pd")
})
})
func createPDWithRetry() (string, error) {