e095e1120b
Extracted delete operations into functions wait on pv/pvc bind removed redundant verification, minor refactors GCEPD: fixed typo name verifyDiskAttached to verifyGCEDiskAttached fix empty log msg Updated test owners removed unnecessary api calls Check for apierr IsNotFound for pod,pv,pvc but ignore result Disable dynamic provisioning in test PVCs gofmt'd
899 lines
31 KiB
Go
899 lines
31 KiB
Go
/*
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Copyright 2015 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 e2e
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import (
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"fmt"
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"time"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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apierrs "k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/apimachinery/registered"
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metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
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"k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/volume/util/volumehelper"
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"k8s.io/kubernetes/test/e2e/framework"
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)
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// Map of all PVs used in the multi pv-pvc tests. The key is the PV's name, which is
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// guaranteed to be unique. The value is {} (empty struct) since we're only interested
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// in the PV's name and if it is present. We must always Get the pv object before
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// referencing any of its values, eg its ClaimRef.
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type pvval struct{}
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type pvmap map[string]pvval
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// Map of all PVCs used in the multi pv-pvc tests. The key is "namespace/pvc.Name". The
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// value is {} (empty struct) since we're only interested in the PVC's name and if it is
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// present. We must always Get the pvc object before referencing any of its values, eg.
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// its VolumeName.
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// Note: It's unsafe to add keys to a map in a loop. Their insertion in the map is
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// unpredictable and can result in the same key being iterated over again.
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type pvcval struct{}
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type pvcmap map[types.NamespacedName]pvcval
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// Configuration for a persistent volume. To create PVs for varying storage options (NFS, ceph, glusterFS, etc.)
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// define the pvSource as below. prebind holds a pre-bound PVC if there is one.
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// pvSource: api.PersistentVolumeSource{
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// NFS: &api.NFSVolumeSource{
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// .
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// .
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// .
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// },
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// }
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type persistentVolumeConfig struct {
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pvSource v1.PersistentVolumeSource
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prebind *v1.PersistentVolumeClaim
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namePrefix string
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}
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// Delete the nfs-server pod. Only done once per KubeDescription().
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func nfsServerPodCleanup(c clientset.Interface, config VolumeTestConfig) {
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defer GinkgoRecover()
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podClient := c.Core().Pods(config.namespace)
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if config.serverImage != "" {
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podName := config.prefix + "-server"
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err := podClient.Delete(podName, nil)
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Expect(err).NotTo(HaveOccurred())
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}
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}
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// Clean up a pv and pvc in a single pv/pvc test case.
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func pvPvcCleanup(c clientset.Interface, ns string, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) {
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deletePersistentVolumeClaim(c, pvc.Name, ns)
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deletePersistentVolume(c, pv.Name)
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}
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// Clean up pvs and pvcs in multi-pv-pvc test cases. All entries found in the pv and
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// claims maps are deleted.
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func pvPvcMapCleanup(c clientset.Interface, ns string, pvols pvmap, claims pvcmap) {
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for pvcKey := range claims {
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deletePersistentVolumeClaim(c, pvcKey.Name, ns)
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delete(claims, pvcKey)
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}
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for pvKey := range pvols {
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deletePersistentVolume(c, pvKey)
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delete(pvols, pvKey)
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}
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}
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// Delete the PV.
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func deletePersistentVolume(c clientset.Interface, pvName string) {
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if c != nil && len(pvName) > 0 {
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framework.Logf("Deleting PersistentVolume %v", pvName)
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err := c.Core().PersistentVolumes().Delete(pvName, nil)
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if err != nil && !apierrs.IsNotFound(err) {
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Expect(err).NotTo(HaveOccurred())
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}
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}
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}
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// Delete the Claim
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func deletePersistentVolumeClaim(c clientset.Interface, pvcName string, ns string) {
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if c != nil && len(pvcName) > 0 {
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framework.Logf("Deleting PersistentVolumeClaim %v", pvcName)
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err := c.Core().PersistentVolumeClaims(ns).Delete(pvcName, nil)
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if err != nil && !apierrs.IsNotFound(err) {
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Expect(err).NotTo(HaveOccurred())
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}
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}
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}
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// Delete the PVC and wait for the PV to become Available again. Validate that the PV
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// has recycled (assumption here about reclaimPolicy). Caller tells this func which
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// phase value to expect for the pv bound to the to-be-deleted claim.
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func deletePVCandValidatePV(c clientset.Interface, ns string, pvc *v1.PersistentVolumeClaim, pv *v1.PersistentVolume, expctPVPhase v1.PersistentVolumePhase) {
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pvname := pvc.Spec.VolumeName
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framework.Logf("Deleting PVC %v to trigger recycling of PV %v", pvc.Name, pvname)
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deletePersistentVolumeClaim(c, pvc.Name, ns)
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// Check that the PVC is really deleted.
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pvc, err := c.Core().PersistentVolumeClaims(ns).Get(pvc.Name, metav1.GetOptions{})
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Expect(apierrs.IsNotFound(err)).To(BeTrue())
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// Wait for the PV's phase to return to Available
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framework.Logf("Waiting for recycling process to complete.")
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err = framework.WaitForPersistentVolumePhase(expctPVPhase, c, pv.Name, 1*time.Second, 300*time.Second)
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Expect(err).NotTo(HaveOccurred())
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// examine the pv's ClaimRef and UID and compare to expected values
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pv, err = c.Core().PersistentVolumes().Get(pv.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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cr := pv.Spec.ClaimRef
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if expctPVPhase == v1.VolumeAvailable {
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if cr != nil { // may be ok if cr != nil
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Expect(len(cr.UID)).To(BeZero())
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}
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} else if expctPVPhase == v1.VolumeBound {
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Expect(cr).NotTo(BeNil())
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Expect(len(cr.UID)).NotTo(BeZero())
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}
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framework.Logf("PV %v now in %q phase", pv.Name, expctPVPhase)
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}
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// Wraps deletePVCandValidatePV() by calling the function in a loop over the PV map. Only
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// bound PVs are deleted. Validates that the claim was deleted and the PV is Available.
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// Note: if there are more claims than pvs then some of the remaining claims will bind to
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// the just-made-available pvs.
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func deletePVCandValidatePVGroup(c clientset.Interface, ns string, pvols pvmap, claims pvcmap) {
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var boundPVs, deletedPVCs int
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var expctPVPhase v1.PersistentVolumePhase
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for pvName := range pvols {
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pv, err := c.Core().PersistentVolumes().Get(pvName, metav1.GetOptions{})
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Expect(apierrs.IsNotFound(err)).To(BeFalse())
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cr := pv.Spec.ClaimRef
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// if pv is bound then delete the pvc it is bound to
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if cr != nil && len(cr.Name) > 0 {
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boundPVs++
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// Assert bound PVC is tracked in this test. Failing this might
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// indicate external PVCs interfering with the test.
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pvcKey := makePvcKey(ns, cr.Name)
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_, found := claims[pvcKey]
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Expect(found).To(BeTrue())
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pvc, err := c.Core().PersistentVolumeClaims(ns).Get(cr.Name, metav1.GetOptions{})
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Expect(apierrs.IsNotFound(err)).To(BeFalse())
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// what Phase do we expect the PV that was bound to the claim to
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// be in after that claim is deleted?
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expctPVPhase = v1.VolumeAvailable
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if len(claims) > len(pvols) {
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// there are excess pvcs so expect the previously bound
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// PV to become bound again
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expctPVPhase = v1.VolumeBound
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}
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deletePVCandValidatePV(c, ns, pvc, pv, expctPVPhase)
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delete(claims, pvcKey)
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deletedPVCs++
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}
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}
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Expect(boundPVs).To(Equal(deletedPVCs))
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}
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// create the PV resource. Fails test on error.
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func createPV(c clientset.Interface, pv *v1.PersistentVolume) *v1.PersistentVolume {
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pv, err := c.Core().PersistentVolumes().Create(pv)
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Expect(err).NotTo(HaveOccurred())
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return pv
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}
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// create the PVC resource. Fails test on error.
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func createPVC(c clientset.Interface, ns string, pvc *v1.PersistentVolumeClaim) *v1.PersistentVolumeClaim {
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pvc, err := c.Core().PersistentVolumeClaims(ns).Create(pvc)
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Expect(err).NotTo(HaveOccurred())
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return pvc
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}
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// Create a PVC followed by the PV based on the passed in nfs-server ip and
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// namespace. If the "preBind" bool is true then pre-bind the PV to the PVC
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// via the PV's ClaimRef. Return the pv and pvc to reflect the created objects.
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// Note: in the pre-bind case the real PVC name, which is generated, is not
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// known until after the PVC is instantiated. This is why the pvc is created
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// before the pv.
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func createPVCPV(c clientset.Interface, pvConfig persistentVolumeConfig, ns string, preBind bool) (*v1.PersistentVolume, *v1.PersistentVolumeClaim) {
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var preBindMsg string
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// make the pvc definition first
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pvc := makePersistentVolumeClaim(ns)
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if preBind {
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preBindMsg = " pre-bound"
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pvConfig.prebind = pvc
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}
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// make the pv spec
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pv := makePersistentVolume(pvConfig)
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By(fmt.Sprintf("Creating a PVC followed by a%s PV", preBindMsg))
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// instantiate the pvc
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pvc = createPVC(c, ns, pvc)
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// instantiate the pv, handle pre-binding by ClaimRef if needed
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if preBind {
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pv.Spec.ClaimRef.Name = pvc.Name
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}
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pv = createPV(c, pv)
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return pv, pvc
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}
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// Create a PV followed by the PVC based on the passed in nfs-server ip and
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// namespace. If the "preBind" bool is true then pre-bind the PVC to the PV
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// via the PVC's VolumeName. Return the pv and pvc to reflect the created
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// objects.
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// Note: in the pre-bind case the real PV name, which is generated, is not
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// known until after the PV is instantiated. This is why the pv is created
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// before the pvc.
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func createPVPVC(c clientset.Interface, pvConfig persistentVolumeConfig, ns string, preBind bool) (*v1.PersistentVolume, *v1.PersistentVolumeClaim) {
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preBindMsg := ""
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if preBind {
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preBindMsg = " pre-bound"
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}
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framework.Logf("Creating a PV followed by a%s PVC", preBindMsg)
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// make the pv and pvc definitions
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pv := makePersistentVolume(pvConfig)
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pvc := makePersistentVolumeClaim(ns)
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// instantiate the pv
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pv = createPV(c, pv)
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// instantiate the pvc, handle pre-binding by VolumeName if needed
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if preBind {
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pvc.Spec.VolumeName = pv.Name
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}
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pvc = createPVC(c, ns, pvc)
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return pv, pvc
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}
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// Create the desired number of PVs and PVCs and return them in separate maps. If the
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// number of PVs != the number of PVCs then the min of those two counts is the number of
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// PVs expected to bind.
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func createPVsPVCs(numpvs, numpvcs int, c clientset.Interface, ns string, pvConfig persistentVolumeConfig) (pvmap, pvcmap) {
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var i int
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var pv *v1.PersistentVolume
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var pvc *v1.PersistentVolumeClaim
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pvMap := make(pvmap, numpvs)
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pvcMap := make(pvcmap, numpvcs)
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var extraPVs, extraPVCs int
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extraPVs = numpvs - numpvcs
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if extraPVs < 0 {
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extraPVCs = -extraPVs
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extraPVs = 0
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}
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pvsToCreate := numpvs - extraPVs // want the min(numpvs, numpvcs)
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// create pvs and pvcs
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for i = 0; i < pvsToCreate; i++ {
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pv, pvc = createPVPVC(c, pvConfig, ns, false)
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pvMap[pv.Name] = pvval{}
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pvcMap[makePvcKey(ns, pvc.Name)] = pvcval{}
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}
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// create extra pvs or pvcs as needed
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for i = 0; i < extraPVs; i++ {
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pv = makePersistentVolume(pvConfig)
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pv = createPV(c, pv)
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pvMap[pv.Name] = pvval{}
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}
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for i = 0; i < extraPVCs; i++ {
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pvc = makePersistentVolumeClaim(ns)
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pvc = createPVC(c, ns, pvc)
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pvcMap[makePvcKey(ns, pvc.Name)] = pvcval{}
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}
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return pvMap, pvcMap
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}
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// Wait for the pv and pvc to bind to each other.
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func waitOnPVandPVC(c clientset.Interface, ns string, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) {
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// Wait for newly created PVC to bind to the PV
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framework.Logf("Waiting for PV %v to bind to PVC %v", pv.Name, pvc.Name)
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err := framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, c, ns, pvc.Name, 3*time.Second, 300*time.Second)
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Expect(err).NotTo(HaveOccurred())
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// Wait for PersistentVolume.Status.Phase to be Bound, which it should be
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// since the PVC is already bound.
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err = framework.WaitForPersistentVolumePhase(v1.VolumeBound, c, pv.Name, 3*time.Second, 300*time.Second)
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Expect(err).NotTo(HaveOccurred())
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// Re-get the pv and pvc objects
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pv, err = c.Core().PersistentVolumes().Get(pv.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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// Re-get the pvc and
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pvc, err = c.Core().PersistentVolumeClaims(ns).Get(pvc.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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// The pv and pvc are both bound, but to each other?
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// Check that the PersistentVolume.ClaimRef matches the PVC
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Expect(pv.Spec.ClaimRef).NotTo(BeNil())
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Expect(pv.Spec.ClaimRef.Name).To(Equal(pvc.Name))
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Expect(pvc.Spec.VolumeName).To(Equal(pv.Name))
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Expect(pv.Spec.ClaimRef.UID).To(Equal(pvc.UID))
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}
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// Search for bound PVs and PVCs by examining pvols for non-nil claimRefs.
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// NOTE: Each iteration waits for a maximum of 3 minutes per PV and, if the PV is bound,
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// up to 3 minutes for the PVC. When the number of PVs != number of PVCs, this can lead
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// to situations where the maximum wait times are reached several times in succession,
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// extending test time. Thus, it is recommended to keep the delta between PVs and PVCs
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// small.
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func waitAndVerifyBinds(c clientset.Interface, ns string, pvols pvmap, claims pvcmap, testExpected bool) {
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var actualBinds int
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expectedBinds := len(pvols)
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if expectedBinds > len(claims) { // want the min of # pvs or #pvcs
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expectedBinds = len(claims)
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}
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for pvName := range pvols {
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err := framework.WaitForPersistentVolumePhase(v1.VolumeBound, c, pvName, 3*time.Second, 180*time.Second)
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if err != nil && len(pvols) > len(claims) {
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framework.Logf("WARN: pv %v is not bound after max wait", pvName)
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framework.Logf(" This may be ok since there are more pvs than pvcs")
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continue
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}
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Expect(err).NotTo(HaveOccurred())
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pv, err := c.Core().PersistentVolumes().Get(pvName, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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if cr := pv.Spec.ClaimRef; cr != nil && len(cr.Name) > 0 {
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// Assert bound pvc is a test resource. Failing assertion could
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// indicate non-test PVC interference or a bug in the test
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pvcKey := makePvcKey(ns, cr.Name)
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_, found := claims[pvcKey]
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Expect(found).To(BeTrue())
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err = framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, c, ns, cr.Name, 3*time.Second, 180*time.Second)
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Expect(err).NotTo(HaveOccurred())
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actualBinds++
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}
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}
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if testExpected {
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Expect(actualBinds).To(Equal(expectedBinds))
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}
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}
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// Test the pod's exit code to be zero.
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func testPodSuccessOrFail(c clientset.Interface, ns string, pod *v1.Pod) {
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By("Pod should terminate with exitcode 0 (success)")
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err := framework.WaitForPodSuccessInNamespace(c, pod.Name, ns)
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Expect(err).NotTo(HaveOccurred())
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framework.Logf("Pod %v succeeded ", pod.Name)
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}
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// Delete the passed in pod.
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func deletePod(f *framework.Framework, c clientset.Interface, ns string, pod *v1.Pod) {
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if c != nil {
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if pod != nil && len(pod.Name) > 0 {
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framework.Logf("Deleting pod %v", pod.Name)
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err := c.Core().Pods(ns).Delete(pod.Name, nil)
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if err != nil && !apierrs.IsNotFound(err) {
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Expect(err).NotTo(HaveOccurred())
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}
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// Wait for pod to terminate. Expect apierr NotFound
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err = f.WaitForPodTerminated(pod.Name, "")
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if err != nil && !apierrs.IsNotFound(err) {
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Expect(err).NotTo(HaveOccurred())
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}
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framework.Logf("Ignore \"not found\" error above. Pod %v successfully deleted", pod.Name)
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}
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}
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}
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// Create the test pod, wait for (hopefully) success, and then delete the pod.
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func createWaitAndDeletePod(f *framework.Framework, c clientset.Interface, ns string, claimName string) {
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framework.Logf("Creating nfs test pod")
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// Make pod spec
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pod := makeWritePod(ns, claimName)
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// Instantiate pod (Create)
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runPod, err := c.Core().Pods(ns).Create(pod)
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Expect(err).NotTo(HaveOccurred())
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Expect(runPod).NotTo(BeNil())
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defer deletePod(f, c, ns, runPod)
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// Wait for the test pod to complete its lifecycle
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testPodSuccessOrFail(c, ns, runPod)
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}
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// Validate PV/PVC, create and verify writer pod, delete the PVC, and validate the PV's
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// phase. Note: the PV is deleted in the AfterEach, not here.
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func completeTest(f *framework.Framework, c clientset.Interface, ns string, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) {
|
|
|
|
// 1. verify that the PV and PVC have binded correctly
|
|
By("Validating the PV-PVC binding")
|
|
waitOnPVandPVC(c, ns, pv, pvc)
|
|
|
|
// 2. create the nfs writer pod, test if the write was successful,
|
|
// then delete the pod and verify that it was deleted
|
|
By("Checking pod has write access to PersistentVolume")
|
|
createWaitAndDeletePod(f, c, ns, pvc.Name)
|
|
|
|
// 3. delete the PVC, wait for PV to become "Available"
|
|
By("Deleting the PVC to invoke the recycler")
|
|
deletePVCandValidatePV(c, ns, pvc, pv, v1.VolumeAvailable)
|
|
}
|
|
|
|
// Validate pairs of PVs and PVCs, create and verify writer pod, delete PVC and validate
|
|
// PV. Ensure each step succeeds.
|
|
// Note: the PV is deleted in the AfterEach, not here.
|
|
// Note: this func is serialized, we wait for each pod to be deleted before creating the
|
|
// next pod. Adding concurrency is a TODO item.
|
|
// Note: this func is called recursively when there are more claims than pvs.
|
|
func completeMultiTest(f *framework.Framework, c clientset.Interface, ns string, pvols pvmap, claims pvcmap) {
|
|
|
|
// 1. verify each PV permits write access to a client pod
|
|
By("Checking pod has write access to PersistentVolumes")
|
|
for pvcKey := range claims {
|
|
pvc, err := c.Core().PersistentVolumeClaims(pvcKey.Namespace).Get(pvcKey.Name, metav1.GetOptions{})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
if len(pvc.Spec.VolumeName) == 0 {
|
|
continue // claim is not bound
|
|
}
|
|
// sanity test to ensure our maps are in sync
|
|
_, found := pvols[pvc.Spec.VolumeName]
|
|
Expect(found).To(BeTrue())
|
|
// TODO: currently a serialized test of each PV
|
|
createWaitAndDeletePod(f, c, pvcKey.Namespace, pvcKey.Name)
|
|
}
|
|
|
|
// 2. delete each PVC, wait for its bound PV to become "Available"
|
|
By("Deleting PVCs to invoke recycler")
|
|
deletePVCandValidatePVGroup(c, ns, pvols, claims)
|
|
}
|
|
|
|
var _ = framework.KubeDescribe("PersistentVolumes", func() {
|
|
|
|
// global vars for the Context()s and It()'s below
|
|
f := framework.NewDefaultFramework("pv")
|
|
var c clientset.Interface
|
|
var ns string
|
|
|
|
BeforeEach(func() {
|
|
c = f.ClientSet
|
|
ns = f.Namespace.Name
|
|
})
|
|
|
|
///////////////////////////////////////////////////////////////////////
|
|
// NFS
|
|
///////////////////////////////////////////////////////////////////////
|
|
// Testing configurations of a single a PV/PVC pair, multiple evenly paired PVs/PVCs,
|
|
// and multiple unevenly paired PV/PVCs
|
|
framework.KubeDescribe("PersistentVolumes:NFS", func() {
|
|
|
|
var (
|
|
NFSconfig VolumeTestConfig
|
|
nfsServerPod *v1.Pod
|
|
serverIP string
|
|
pvConfig persistentVolumeConfig
|
|
)
|
|
|
|
// config for the nfs-server pod in the default namespace
|
|
NFSconfig = VolumeTestConfig{
|
|
namespace: v1.NamespaceDefault,
|
|
prefix: "nfs",
|
|
serverImage: "gcr.io/google_containers/volume-nfs:0.7",
|
|
serverPorts: []int{2049},
|
|
serverArgs: []string{"-G", "777", "/exports"},
|
|
}
|
|
|
|
BeforeEach(func() {
|
|
// If it doesn't exist, create the nfs server pod in the "default" ns.
|
|
// The "default" ns is used so that individual tests can delete their
|
|
// ns without impacting the nfs-server pod.
|
|
if nfsServerPod == nil {
|
|
nfsServerPod = startVolumeServer(c, NFSconfig)
|
|
serverIP = nfsServerPod.Status.PodIP
|
|
framework.Logf("NFS server IP address: %v", serverIP)
|
|
}
|
|
pvConfig = persistentVolumeConfig{
|
|
namePrefix: "nfs-",
|
|
pvSource: v1.PersistentVolumeSource{
|
|
NFS: &v1.NFSVolumeSource{
|
|
Server: serverIP,
|
|
Path: "/exports",
|
|
ReadOnly: false,
|
|
},
|
|
},
|
|
}
|
|
})
|
|
|
|
// Execute after *all* the tests have run
|
|
AddCleanupAction(func() {
|
|
if nfsServerPod != nil && c != nil {
|
|
framework.Logf("AfterSuite: nfs-server pod %v is non-nil, deleting pod", nfsServerPod.Name)
|
|
nfsServerPodCleanup(c, NFSconfig)
|
|
nfsServerPod = nil
|
|
}
|
|
})
|
|
|
|
Context("with Single PV - PVC pairs", func() {
|
|
|
|
var pv *v1.PersistentVolume
|
|
var pvc *v1.PersistentVolumeClaim
|
|
|
|
// Note: this is the only code where the pv is deleted.
|
|
AfterEach(func() {
|
|
framework.Logf("AfterEach: Cleaning up test resources.")
|
|
pvPvcCleanup(c, ns, pv, pvc)
|
|
})
|
|
|
|
// Individual tests follow:
|
|
//
|
|
// Create an nfs PV, then a claim that matches the PV, and a pod that
|
|
// contains the claim. Verify that the PV and PVC bind correctly, and
|
|
// that the pod can write to the nfs volume.
|
|
It("should create a non-pre-bound PV and PVC: test write access [Flaky]", func() {
|
|
pv, pvc = createPVPVC(c, pvConfig, ns, false)
|
|
completeTest(f, c, ns, pv, pvc)
|
|
})
|
|
|
|
// Create a claim first, then a nfs PV that matches the claim, and a
|
|
// pod that contains the claim. Verify that the PV and PVC bind
|
|
// correctly, and that the pod can write to the nfs volume.
|
|
It("create a PVC and non-pre-bound PV: test write access [Flaky]", func() {
|
|
pv, pvc = createPVCPV(c, pvConfig, ns, false)
|
|
completeTest(f, c, ns, pv, pvc)
|
|
})
|
|
|
|
// Create a claim first, then a pre-bound nfs PV that matches the claim,
|
|
// and a pod that contains the claim. Verify that the PV and PVC bind
|
|
// correctly, and that the pod can write to the nfs volume.
|
|
It("create a PVC and a pre-bound PV: test write access [Flaky]", func() {
|
|
pv, pvc = createPVCPV(c, pvConfig, ns, true)
|
|
completeTest(f, c, ns, pv, pvc)
|
|
})
|
|
|
|
// Create a nfs PV first, then a pre-bound PVC that matches the PV,
|
|
// and a pod that contains the claim. Verify that the PV and PVC bind
|
|
// correctly, and that the pod can write to the nfs volume.
|
|
It("create a PV and a pre-bound PVC: test write access [Flaky]", func() {
|
|
pv, pvc = createPVPVC(c, pvConfig, ns, true)
|
|
completeTest(f, c, ns, pv, pvc)
|
|
})
|
|
})
|
|
|
|
// Create multiple pvs and pvcs, all in the same namespace. The PVs-PVCs are
|
|
// verified to bind, though it's not known in advanced which PV will bind to
|
|
// which claim. For each pv-pvc pair create a pod that writes to the nfs mount.
|
|
// Note: when the number of PVs exceeds the number of PVCs the max binding wait
|
|
// time will occur for each PV in excess. This is expected but the delta
|
|
// should be kept small so that the tests aren't unnecessarily slow.
|
|
// Note: future tests may wish to incorporate the following:
|
|
// a) pre-binding, b) create pvcs before pvs, c) create pvcs and pods
|
|
// in different namespaces.
|
|
Context("with multiple PVs and PVCs all in same ns", func() {
|
|
|
|
// define the maximum number of PVs and PVCs supported by these tests
|
|
const maxNumPVs = 10
|
|
const maxNumPVCs = 10
|
|
// create the pv and pvc maps to be reused in the It blocks
|
|
pvols := make(pvmap, maxNumPVs)
|
|
claims := make(pvcmap, maxNumPVCs)
|
|
|
|
AfterEach(func() {
|
|
framework.Logf("AfterEach: deleting %v PVCs and %v PVs...", len(claims), len(pvols))
|
|
pvPvcMapCleanup(c, ns, pvols, claims)
|
|
})
|
|
|
|
// Create 2 PVs and 4 PVCs.
|
|
// Note: PVs are created before claims and no pre-binding
|
|
It("should create 2 PVs and 4 PVCs: test write access[Flaky]", func() {
|
|
numPVs, numPVCs := 2, 4
|
|
pvols, claims = createPVsPVCs(numPVs, numPVCs, c, ns, pvConfig)
|
|
waitAndVerifyBinds(c, ns, pvols, claims, true)
|
|
completeMultiTest(f, c, ns, pvols, claims)
|
|
})
|
|
|
|
// Create 3 PVs and 3 PVCs.
|
|
// Note: PVs are created before claims and no pre-binding
|
|
It("should create 3 PVs and 3 PVCs: test write access[Flaky]", func() {
|
|
numPVs, numPVCs := 3, 3
|
|
pvols, claims = createPVsPVCs(numPVs, numPVCs, c, ns, pvConfig)
|
|
waitAndVerifyBinds(c, ns, pvols, claims, true)
|
|
completeMultiTest(f, c, ns, pvols, claims)
|
|
})
|
|
|
|
// Create 4 PVs and 2 PVCs.
|
|
// Note: PVs are created before claims and no pre-binding.
|
|
It("should create 4 PVs and 2 PVCs: test write access[Flaky]", func() {
|
|
numPVs, numPVCs := 4, 2
|
|
pvols, claims = createPVsPVCs(numPVs, numPVCs, c, ns, pvConfig)
|
|
waitAndVerifyBinds(c, ns, pvols, claims, true)
|
|
completeMultiTest(f, c, ns, pvols, claims)
|
|
})
|
|
})
|
|
})
|
|
///////////////////////////////////////////////////////////////////////
|
|
// GCE PD
|
|
///////////////////////////////////////////////////////////////////////
|
|
// Testing configurations of single a PV/PVC pair attached to a GCE PD
|
|
framework.KubeDescribe("PersistentVolumes:GCEPD", func() {
|
|
|
|
var (
|
|
diskName string
|
|
err error
|
|
pv *v1.PersistentVolume
|
|
pvc *v1.PersistentVolumeClaim
|
|
clientPod *v1.Pod
|
|
pvConfig persistentVolumeConfig
|
|
)
|
|
|
|
BeforeEach(func() {
|
|
framework.SkipUnlessProviderIs("gce")
|
|
if diskName == "" {
|
|
diskName, err = createPDWithRetry()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
pvConfig = persistentVolumeConfig{
|
|
namePrefix: "gce-",
|
|
pvSource: v1.PersistentVolumeSource{
|
|
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
|
|
PDName: diskName,
|
|
FSType: "ext3",
|
|
ReadOnly: false,
|
|
},
|
|
},
|
|
prebind: nil,
|
|
}
|
|
}
|
|
})
|
|
|
|
AfterEach(func() {
|
|
framework.Logf("AfterEach: Cleaning up test resources")
|
|
if c != nil {
|
|
deletePod(f, c, ns, clientPod)
|
|
pvPvcCleanup(c, ns, pv, pvc)
|
|
clientPod = nil
|
|
pvc = nil
|
|
pv = nil
|
|
}
|
|
})
|
|
|
|
AddCleanupAction(func() {
|
|
if len(diskName) > 0 {
|
|
deletePDWithRetry(diskName)
|
|
}
|
|
})
|
|
|
|
// Attach a persistent disk to a pod using a PVC.
|
|
// Delete the PVC and then the pod. Expect the pod to succeed in unmounting and detaching PD on delete.
|
|
It("should test that deleting a PVC before the pod does not cause pod deletion to fail on PD detach", func() {
|
|
By("Creating the PV and PVC")
|
|
pv, pvc = createPVPVC(c, pvConfig, ns, false)
|
|
waitOnPVandPVC(c, ns, pv, pvc)
|
|
|
|
By("Creating the Client Pod")
|
|
clientPod = createClientPod(c, ns, pvc)
|
|
node := types.NodeName(clientPod.Spec.NodeName)
|
|
|
|
By("Deleting the Claim")
|
|
deletePersistentVolumeClaim(c, pvc.Name, ns)
|
|
verifyGCEDiskAttached(diskName, node)
|
|
|
|
By("Deleting the Pod")
|
|
deletePod(f, c, ns, clientPod)
|
|
|
|
By("Verifying Persistent Disk detach")
|
|
err = waitForPDDetach(diskName, node)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
// Attach a persistent disk to a pod using a PVC.
|
|
// Delete the PV and then the pod. Expect the pod to succeed in unmounting and detaching PD on delete.
|
|
It("should test that deleting the PV before the pod does not cause pod deletion to fail on PD detach", func() {
|
|
By("Creating the PV and PVC")
|
|
pv, pvc = createPVPVC(c, pvConfig, ns, false)
|
|
waitOnPVandPVC(c, ns, pv, pvc)
|
|
|
|
By("Creating the Client Pod")
|
|
clientPod = createClientPod(c, ns, pvc)
|
|
node := types.NodeName(clientPod.Spec.NodeName)
|
|
|
|
By("Deleting the Persistent Volume")
|
|
deletePersistentVolume(c, pv.Name)
|
|
verifyGCEDiskAttached(diskName, node)
|
|
|
|
By("Deleting the client pod")
|
|
deletePod(f, c, ns, clientPod)
|
|
|
|
By("Verifying Persistent Disk detaches")
|
|
err = waitForPDDetach(diskName, node)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
})
|
|
})
|
|
|
|
// Sanity check for GCE testing. Verify the persistent disk attached to the node.
|
|
func verifyGCEDiskAttached(diskName string, nodeName types.NodeName) bool {
|
|
gceCloud, err := getGCECloud()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
isAttached, err := gceCloud.DiskIsAttached(diskName, nodeName)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
return isAttached
|
|
}
|
|
|
|
// Return a pvckey struct.
|
|
func makePvcKey(ns, name string) types.NamespacedName {
|
|
return types.NamespacedName{Namespace: ns, Name: name}
|
|
}
|
|
|
|
// Returns a PV definition based on the nfs server IP. If the PVC is not nil
|
|
// then the PV is defined with a ClaimRef which includes the PVC's namespace.
|
|
// If the PVC is nil then the PV is not defined with a ClaimRef.
|
|
// Note: the passed-in claim does not have a name until it is created
|
|
// (instantiated) and thus the PV's ClaimRef cannot be completely filled-in in
|
|
// this func. Therefore, the ClaimRef's name is added later in
|
|
// createPVCPV.
|
|
|
|
func makePersistentVolume(pvConfig persistentVolumeConfig) *v1.PersistentVolume {
|
|
// Specs are expected to match this test's PersistentVolumeClaim
|
|
|
|
var claimRef *v1.ObjectReference
|
|
|
|
if pvConfig.prebind != nil {
|
|
claimRef = &v1.ObjectReference{
|
|
Name: pvConfig.prebind.Name,
|
|
Namespace: pvConfig.prebind.Namespace,
|
|
}
|
|
}
|
|
|
|
return &v1.PersistentVolume{
|
|
ObjectMeta: v1.ObjectMeta{
|
|
GenerateName: pvConfig.namePrefix,
|
|
Annotations: map[string]string{
|
|
volumehelper.VolumeGidAnnotationKey: "777",
|
|
},
|
|
},
|
|
Spec: v1.PersistentVolumeSpec{
|
|
PersistentVolumeReclaimPolicy: v1.PersistentVolumeReclaimRecycle,
|
|
Capacity: v1.ResourceList{
|
|
v1.ResourceName(v1.ResourceStorage): resource.MustParse("2Gi"),
|
|
},
|
|
PersistentVolumeSource: pvConfig.pvSource,
|
|
AccessModes: []v1.PersistentVolumeAccessMode{
|
|
v1.ReadWriteOnce,
|
|
v1.ReadOnlyMany,
|
|
v1.ReadWriteMany,
|
|
},
|
|
ClaimRef: claimRef,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Returns a PVC definition based on the namespace.
|
|
// Note: if this PVC is intended to be pre-bound to a PV, whose name is not
|
|
// known until the PV is instantiated, then the func createPVPVC will add
|
|
// pvc.Spec.VolumeName to this claim.
|
|
func makePersistentVolumeClaim(ns string) *v1.PersistentVolumeClaim {
|
|
// Specs are expected to match this test's PersistentVolume
|
|
|
|
return &v1.PersistentVolumeClaim{
|
|
ObjectMeta: v1.ObjectMeta{
|
|
GenerateName: "pvc-",
|
|
Namespace: ns,
|
|
Annotations: map[string]string{
|
|
"volume.beta.kubernetes.io/storage-class": "",
|
|
},
|
|
},
|
|
Spec: v1.PersistentVolumeClaimSpec{
|
|
AccessModes: []v1.PersistentVolumeAccessMode{
|
|
v1.ReadWriteOnce,
|
|
v1.ReadOnlyMany,
|
|
v1.ReadWriteMany,
|
|
},
|
|
Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1Gi"),
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
// Returns a pod definition based on the namespace. The pod references the PVC's
|
|
// name.
|
|
func makeWritePod(ns string, pvcName string) *v1.Pod {
|
|
return makePod(ns, pvcName, "touch /mnt/SUCCESS && (id -G | grep -E '\\b777\\b')")
|
|
}
|
|
|
|
// Returns a pod definition based on the namespace. The pod references the PVC's
|
|
// name. A slice of BASH commands can be supplied as args to be run by the pod
|
|
func makePod(ns string, pvcName string, command ...string) *v1.Pod {
|
|
|
|
if len(command) == 0 {
|
|
command = []string{"while true; do sleep 1; done"}
|
|
}
|
|
var isPrivileged bool = true
|
|
return &v1.Pod{
|
|
TypeMeta: metav1.TypeMeta{
|
|
Kind: "Pod",
|
|
APIVersion: registered.GroupOrDie(v1.GroupName).GroupVersion.String(),
|
|
},
|
|
ObjectMeta: v1.ObjectMeta{
|
|
GenerateName: "client-",
|
|
Namespace: ns,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: "write-pod",
|
|
Image: "gcr.io/google_containers/busybox:1.24",
|
|
Command: []string{"/bin/sh", "-c"},
|
|
Args: command,
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
Name: pvcName,
|
|
MountPath: "/mnt",
|
|
},
|
|
},
|
|
SecurityContext: &v1.SecurityContext{
|
|
Privileged: &isPrivileged,
|
|
},
|
|
},
|
|
},
|
|
RestartPolicy: v1.RestartPolicyOnFailure,
|
|
Volumes: []v1.Volume{
|
|
{
|
|
Name: pvcName,
|
|
VolumeSource: v1.VolumeSource{
|
|
PersistentVolumeClaim: &v1.PersistentVolumeClaimVolumeSource{
|
|
ClaimName: pvcName,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
// Define and create a pod with a mounted PV. Pod runs infinite loop until killed.
|
|
func createClientPod(c clientset.Interface, ns string, pvc *v1.PersistentVolumeClaim) *v1.Pod {
|
|
clientPod := makePod(ns, pvc.Name)
|
|
clientPod, err := c.Core().Pods(ns).Create(clientPod)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
// Verify the pod is running before returning it
|
|
err = framework.WaitForPodRunningInNamespace(c, clientPod)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
clientPod, err = c.Core().Pods(ns).Get(clientPod.Name, metav1.GetOptions{})
|
|
Expect(apierrs.IsNotFound(err)).To(BeFalse())
|
|
return clientPod
|
|
}
|