forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
volume_provisioning.go
1093 lines (978 loc) · 36.8 KB
/
volume_provisioning.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package storage
import (
"fmt"
"strings"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
apierrs "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/api/core/v1"
rbacv1beta1 "k8s.io/api/rbac/v1beta1"
storage "k8s.io/api/storage/v1"
storagebeta "k8s.io/api/storage/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apiserver/pkg/authentication/serviceaccount"
clientset "k8s.io/client-go/kubernetes"
storageutil "k8s.io/kubernetes/pkg/apis/storage/v1/util"
"k8s.io/kubernetes/test/e2e/framework"
"k8s.io/kubernetes/test/e2e/storage/utils"
)
type storageClassTest struct {
name string
cloudProviders []string
provisioner string
parameters map[string]string
claimSize string
expectedSize string
pvCheck func(volume *v1.PersistentVolume) error
nodeName string
}
const (
// Plugin name of the external provisioner
externalPluginName = "example.com/nfs"
)
func testDynamicProvisioning(t storageClassTest, client clientset.Interface, claim *v1.PersistentVolumeClaim, class *storage.StorageClass) *v1.PersistentVolume {
var err error
if class != nil {
By("creating a StorageClass " + class.Name)
class, err = client.StorageV1().StorageClasses().Create(class)
Expect(err).NotTo(HaveOccurred())
defer func() {
framework.Logf("deleting storage class %s", class.Name)
framework.ExpectNoError(client.StorageV1().StorageClasses().Delete(class.Name, nil))
}()
}
By("creating a claim")
claim, err = client.CoreV1().PersistentVolumeClaims(claim.Namespace).Create(claim)
Expect(err).NotTo(HaveOccurred())
defer func() {
framework.Logf("deleting claim %q/%q", claim.Namespace, claim.Name)
// typically this claim has already been deleted
err = client.CoreV1().PersistentVolumeClaims(claim.Namespace).Delete(claim.Name, nil)
if err != nil && !apierrs.IsNotFound(err) {
framework.Failf("Error deleting claim %q. Error: %v", claim.Name, err)
}
}()
err = framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, client, claim.Namespace, claim.Name, framework.Poll, framework.ClaimProvisionTimeout)
Expect(err).NotTo(HaveOccurred())
By("checking the claim")
// Get new copy of the claim
claim, err = client.CoreV1().PersistentVolumeClaims(claim.Namespace).Get(claim.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
// Get the bound PV
pv, err := client.CoreV1().PersistentVolumes().Get(claim.Spec.VolumeName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
// Check sizes
expectedCapacity := resource.MustParse(t.expectedSize)
pvCapacity := pv.Spec.Capacity[v1.ResourceName(v1.ResourceStorage)]
Expect(pvCapacity.Value()).To(Equal(expectedCapacity.Value()), "pvCapacity is not equal to expectedCapacity")
requestedCapacity := resource.MustParse(t.claimSize)
claimCapacity := claim.Spec.Resources.Requests[v1.ResourceName(v1.ResourceStorage)]
Expect(claimCapacity.Value()).To(Equal(requestedCapacity.Value()), "claimCapacity is not equal to requestedCapacity")
// Check PV properties
By("checking the PV")
expectedAccessModes := []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
Expect(pv.Spec.AccessModes).To(Equal(expectedAccessModes))
Expect(pv.Spec.ClaimRef.Name).To(Equal(claim.ObjectMeta.Name))
Expect(pv.Spec.ClaimRef.Namespace).To(Equal(claim.ObjectMeta.Namespace))
if class == nil {
Expect(pv.Spec.PersistentVolumeReclaimPolicy).To(Equal(v1.PersistentVolumeReclaimDelete))
} else {
Expect(pv.Spec.PersistentVolumeReclaimPolicy).To(Equal(*class.ReclaimPolicy))
Expect(pv.Spec.MountOptions).To(Equal(class.MountOptions))
}
// Run the checker
if t.pvCheck != nil {
err = t.pvCheck(pv)
Expect(err).NotTo(HaveOccurred())
}
// We start two pods:
// - The first writes 'hello word' to the /mnt/test (= the volume).
// - The second one runs grep 'hello world' on /mnt/test.
// If both succeed, Kubernetes actually allocated something that is
// persistent across pods.
By("checking the created volume is writable and has the PV's mount options")
command := "echo 'hello world' > /mnt/test/data"
// We give the first pod the secondary responsibility of checking the volume has
// been mounted with the PV's mount options, if the PV was provisioned with any
for _, option := range pv.Spec.MountOptions {
// Get entry, get mount options at 6th word, replace brackets with commas
command += fmt.Sprintf(" && ( mount | grep 'on /mnt/test' | awk '{print $6}' | sed 's/^(/,/; s/)$/,/' | grep -q ,%s, )", option)
}
runInPodWithVolume(client, claim.Namespace, claim.Name, t.nodeName, command)
By("checking the created volume is readable and retains data")
runInPodWithVolume(client, claim.Namespace, claim.Name, t.nodeName, "grep 'hello world' /mnt/test/data")
By(fmt.Sprintf("deleting claim %q/%q", claim.Namespace, claim.Name))
framework.ExpectNoError(client.CoreV1().PersistentVolumeClaims(claim.Namespace).Delete(claim.Name, nil))
// Wait for the PV to get deleted if reclaim policy is Delete. (If it's
// Retain, there's no use waiting because the PV won't be auto-deleted and
// it's expected for the caller to do it.) Technically, the first few delete
// attempts may fail, as the volume is still attached to a node because
// kubelet is slowly cleaning up the previous pod, however it should succeed
// in a couple of minutes. Wait 20 minutes to recover from random cloud
// hiccups.
if pv.Spec.PersistentVolumeReclaimPolicy == v1.PersistentVolumeReclaimDelete {
By(fmt.Sprintf("deleting the claim's PV %q", pv.Name))
framework.ExpectNoError(framework.WaitForPersistentVolumeDeleted(client, pv.Name, 5*time.Second, 20*time.Minute))
}
return pv
}
// checkAWSEBS checks properties of an AWS EBS. Test framework does not
// instantiate full AWS provider, therefore we need use ec2 API directly.
func checkAWSEBS(volume *v1.PersistentVolume, volumeType string, encrypted bool) error {
diskName := volume.Spec.AWSElasticBlockStore.VolumeID
var client *ec2.EC2
tokens := strings.Split(diskName, "/")
volumeID := tokens[len(tokens)-1]
zone := framework.TestContext.CloudConfig.Zone
if len(zone) > 0 {
region := zone[:len(zone)-1]
cfg := aws.Config{Region: ®ion}
framework.Logf("using region %s", region)
client = ec2.New(session.New(), &cfg)
} else {
framework.Logf("no region configured")
client = ec2.New(session.New())
}
request := &ec2.DescribeVolumesInput{
VolumeIds: []*string{&volumeID},
}
info, err := client.DescribeVolumes(request)
if err != nil {
return fmt.Errorf("error querying ec2 for volume %q: %v", volumeID, err)
}
if len(info.Volumes) == 0 {
return fmt.Errorf("no volumes found for volume %q", volumeID)
}
if len(info.Volumes) > 1 {
return fmt.Errorf("multiple volumes found for volume %q", volumeID)
}
awsVolume := info.Volumes[0]
if awsVolume.VolumeType == nil {
return fmt.Errorf("expected volume type %q, got nil", volumeType)
}
if *awsVolume.VolumeType != volumeType {
return fmt.Errorf("expected volume type %q, got %q", volumeType, *awsVolume.VolumeType)
}
if encrypted && awsVolume.Encrypted == nil {
return fmt.Errorf("expected encrypted volume, got no encryption")
}
if encrypted && !*awsVolume.Encrypted {
return fmt.Errorf("expected encrypted volume, got %v", *awsVolume.Encrypted)
}
return nil
}
func checkGCEPD(volume *v1.PersistentVolume, volumeType string) error {
cloud, err := framework.GetGCECloud()
if err != nil {
return err
}
diskName := volume.Spec.GCEPersistentDisk.PDName
disk, err := cloud.GetDiskByNameUnknownZone(diskName)
if err != nil {
return err
}
if !strings.HasSuffix(disk.Type, volumeType) {
return fmt.Errorf("unexpected disk type %q, expected suffix %q", disk.Type, volumeType)
}
return nil
}
var _ = utils.SIGDescribe("Dynamic Provisioning", func() {
f := framework.NewDefaultFramework("volume-provisioning")
// filled in BeforeEach
var c clientset.Interface
var ns string
BeforeEach(func() {
c = f.ClientSet
ns = f.Namespace.Name
})
Describe("DynamicProvisioner", func() {
It("should provision storage with different parameters [Slow]", func() {
cloudZone := getRandomCloudZone(c)
// This test checks that dynamic provisioning can provision a volume
// that can be used to persist data among pods.
tests := []storageClassTest{
// GCE/GKE
{
name: "SSD PD on GCE/GKE",
cloudProviders: []string{"gce", "gke"},
provisioner: "kubernetes.io/gce-pd",
parameters: map[string]string{
"type": "pd-ssd",
"zone": cloudZone,
},
claimSize: "1.5G",
expectedSize: "2G",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkGCEPD(volume, "pd-ssd")
},
},
{
name: "HDD PD on GCE/GKE",
cloudProviders: []string{"gce", "gke"},
provisioner: "kubernetes.io/gce-pd",
parameters: map[string]string{
"type": "pd-standard",
},
claimSize: "1.5G",
expectedSize: "2G",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkGCEPD(volume, "pd-standard")
},
},
// AWS
{
name: "gp2 EBS on AWS",
cloudProviders: []string{"aws"},
provisioner: "kubernetes.io/aws-ebs",
parameters: map[string]string{
"type": "gp2",
"zone": cloudZone,
},
claimSize: "1.5Gi",
expectedSize: "2Gi",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkAWSEBS(volume, "gp2", false)
},
},
{
name: "io1 EBS on AWS",
cloudProviders: []string{"aws"},
provisioner: "kubernetes.io/aws-ebs",
parameters: map[string]string{
"type": "io1",
"iopsPerGB": "50",
},
claimSize: "3.5Gi",
expectedSize: "4Gi", // 4 GiB is minimum for io1
pvCheck: func(volume *v1.PersistentVolume) error {
return checkAWSEBS(volume, "io1", false)
},
},
{
name: "sc1 EBS on AWS",
cloudProviders: []string{"aws"},
provisioner: "kubernetes.io/aws-ebs",
parameters: map[string]string{
"type": "sc1",
},
claimSize: "500Gi", // minimum for sc1
expectedSize: "500Gi",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkAWSEBS(volume, "sc1", false)
},
},
{
name: "st1 EBS on AWS",
cloudProviders: []string{"aws"},
provisioner: "kubernetes.io/aws-ebs",
parameters: map[string]string{
"type": "st1",
},
claimSize: "500Gi", // minimum for st1
expectedSize: "500Gi",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkAWSEBS(volume, "st1", false)
},
},
{
name: "encrypted EBS on AWS",
cloudProviders: []string{"aws"},
provisioner: "kubernetes.io/aws-ebs",
parameters: map[string]string{
"encrypted": "true",
},
claimSize: "1Gi",
expectedSize: "1Gi",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkAWSEBS(volume, "gp2", true)
},
},
// OpenStack generic tests (works on all OpenStack deployments)
{
name: "generic Cinder volume on OpenStack",
cloudProviders: []string{"openstack"},
provisioner: "kubernetes.io/cinder",
parameters: map[string]string{},
claimSize: "1.5Gi",
expectedSize: "2Gi",
pvCheck: nil, // there is currently nothing to check on OpenStack
},
{
name: "Cinder volume with empty volume type and zone on OpenStack",
cloudProviders: []string{"openstack"},
provisioner: "kubernetes.io/cinder",
parameters: map[string]string{
"type": "",
"availability": "",
},
claimSize: "1.5Gi",
expectedSize: "2Gi",
pvCheck: nil, // there is currently nothing to check on OpenStack
},
// vSphere generic test
{
name: "generic vSphere volume",
cloudProviders: []string{"vsphere"},
provisioner: "kubernetes.io/vsphere-volume",
parameters: map[string]string{},
claimSize: "1.5Gi",
expectedSize: "1.5Gi",
pvCheck: nil,
},
// Azure
{
name: "Azure disk volume with empty sku and location",
cloudProviders: []string{"azure"},
provisioner: "kubernetes.io/azure-disk",
parameters: map[string]string{},
claimSize: "1Gi",
expectedSize: "1Gi",
pvCheck: nil,
},
}
var betaTest *storageClassTest
for i, t := range tests {
// Beware of clojure, use local variables instead of those from
// outer scope
test := t
if !framework.ProviderIs(test.cloudProviders...) {
framework.Logf("Skipping %q: cloud providers is not %v", test.name, test.cloudProviders)
continue
}
// Remember the last supported test for subsequent test of beta API
betaTest = &test
By("Testing " + test.name)
suffix := fmt.Sprintf("%d", i)
class := newStorageClass(test, ns, suffix)
claim := newClaim(test, ns, suffix)
claim.Spec.StorageClassName = &class.Name
testDynamicProvisioning(test, c, claim, class)
}
// Run the last test with storage.k8s.io/v1beta1 on pvc
if betaTest != nil {
By("Testing " + betaTest.name + " with beta volume provisioning")
class := newBetaStorageClass(*betaTest, "beta")
// we need to create the class manually, testDynamicProvisioning does not accept beta class
class, err := c.StorageV1beta1().StorageClasses().Create(class)
Expect(err).NotTo(HaveOccurred())
defer deleteStorageClass(c, class.Name)
claim := newClaim(*betaTest, ns, "beta")
claim.Spec.StorageClassName = &(class.Name)
testDynamicProvisioning(*betaTest, c, claim, nil)
}
})
It("should provision storage with non-default reclaim policy Retain", func() {
framework.SkipUnlessProviderIs("gce", "gke")
test := storageClassTest{
name: "HDD PD on GCE/GKE",
cloudProviders: []string{"gce", "gke"},
provisioner: "kubernetes.io/gce-pd",
parameters: map[string]string{
"type": "pd-standard",
},
claimSize: "1G",
expectedSize: "1G",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkGCEPD(volume, "pd-standard")
},
}
class := newStorageClass(test, ns, "reclaimpolicy")
retain := v1.PersistentVolumeReclaimRetain
class.ReclaimPolicy = &retain
claim := newClaim(test, ns, "reclaimpolicy")
claim.Spec.StorageClassName = &class.Name
pv := testDynamicProvisioning(test, c, claim, class)
By(fmt.Sprintf("waiting for the provisioned PV %q to enter phase %s", pv.Name, v1.VolumeReleased))
framework.ExpectNoError(framework.WaitForPersistentVolumePhase(v1.VolumeReleased, c, pv.Name, 1*time.Second, 30*time.Second))
By(fmt.Sprintf("deleting the storage asset backing the PV %q", pv.Name))
framework.ExpectNoError(framework.DeletePDWithRetry(pv.Spec.GCEPersistentDisk.PDName))
By(fmt.Sprintf("deleting the PV %q", pv.Name))
framework.ExpectNoError(framework.DeletePersistentVolume(c, pv.Name), "Failed to delete PV ", pv.Name)
framework.ExpectNoError(framework.WaitForPersistentVolumeDeleted(c, pv.Name, 1*time.Second, 30*time.Second))
})
It("should provision storage with mount options", func() {
framework.SkipUnlessProviderIs("gce", "gke")
test := storageClassTest{
name: "HDD PD on GCE/GKE",
cloudProviders: []string{"gce", "gke"},
provisioner: "kubernetes.io/gce-pd",
parameters: map[string]string{
"type": "pd-standard",
},
claimSize: "1G",
expectedSize: "1G",
pvCheck: func(volume *v1.PersistentVolume) error {
return checkGCEPD(volume, "pd-standard")
},
}
class := newStorageClass(test, ns, "mountoptions")
class.MountOptions = []string{"debug", "nouid32"}
claim := newClaim(test, ns, "mountoptions")
claim.Spec.StorageClassName = &class.Name
testDynamicProvisioning(test, c, claim, class)
})
// NOTE: Slow! The test will wait up to 5 minutes (framework.ClaimProvisionTimeout)
// when there is no regression.
It("should not provision a volume in an unmanaged GCE zone. [Slow]", func() {
framework.SkipUnlessProviderIs("gce", "gke")
var suffix string = "unmananged"
By("Discovering an unmanaged zone")
allZones := sets.NewString() // all zones in the project
managedZones := sets.NewString() // subset of allZones
gceCloud, err := framework.GetGCECloud()
Expect(err).NotTo(HaveOccurred())
// Get all k8s managed zones (same as zones with nodes in them for test)
managedZones, err = gceCloud.GetAllZonesFromCloudProvider()
Expect(err).NotTo(HaveOccurred())
// Get a list of all zones in the project
zones, err := gceCloud.ComputeServices().GA.Zones.List(framework.TestContext.CloudConfig.ProjectID).Do()
Expect(err).NotTo(HaveOccurred())
for _, z := range zones.Items {
allZones.Insert(z.Name)
}
// Get the subset of zones not managed by k8s
var unmanagedZone string
var popped bool
unmanagedZones := allZones.Difference(managedZones)
// And select one of them at random.
if unmanagedZone, popped = unmanagedZones.PopAny(); !popped {
framework.Skipf("No unmanaged zones found.")
}
By("Creating a StorageClass for the unmanaged zone")
test := storageClassTest{
name: "unmanaged_zone",
provisioner: "kubernetes.io/gce-pd",
parameters: map[string]string{"zone": unmanagedZone},
claimSize: "1G",
}
sc := newStorageClass(test, ns, suffix)
sc, err = c.StorageV1().StorageClasses().Create(sc)
Expect(err).NotTo(HaveOccurred())
defer deleteStorageClass(c, sc.Name)
By("Creating a claim and expecting it to timeout")
pvc := newClaim(test, ns, suffix)
pvc.Spec.StorageClassName = &sc.Name
pvc, err = c.CoreV1().PersistentVolumeClaims(ns).Create(pvc)
Expect(err).NotTo(HaveOccurred())
defer func() {
framework.ExpectNoError(framework.DeletePersistentVolumeClaim(c, pvc.Name, ns), "Failed to delete PVC ", pvc.Name)
}()
// The claim should timeout phase:Pending
err = framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, c, ns, pvc.Name, 2*time.Second, framework.ClaimProvisionTimeout)
Expect(err).To(HaveOccurred())
framework.Logf(err.Error())
})
It("should test that deleting a claim before the volume is provisioned deletes the volume.", func() {
// This case tests for the regressions of a bug fixed by PR #21268
// REGRESSION: Deleting the PVC before the PV is provisioned can result in the PV
// not being deleted.
// NOTE: Polls until no PVs are detected, times out at 5 minutes.
framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere", "azure")
const raceAttempts int = 100
var residualPVs []*v1.PersistentVolume
By(fmt.Sprintf("Creating and deleting PersistentVolumeClaims %d times", raceAttempts))
test := storageClassTest{
name: "deletion race",
provisioner: "", // Use a native one based on current cloud provider
claimSize: "1Gi",
}
class := newStorageClass(test, ns, "race")
class, err := c.StorageV1().StorageClasses().Create(class)
Expect(err).NotTo(HaveOccurred())
defer deleteStorageClass(c, class.Name)
// To increase chance of detection, attempt multiple iterations
for i := 0; i < raceAttempts; i++ {
suffix := fmt.Sprintf("race-%d", i)
claim := newClaim(test, ns, suffix)
claim.Spec.StorageClassName = &class.Name
tmpClaim, err := framework.CreatePVC(c, ns, claim)
Expect(err).NotTo(HaveOccurred())
framework.ExpectNoError(framework.DeletePersistentVolumeClaim(c, tmpClaim.Name, ns))
}
By(fmt.Sprintf("Checking for residual PersistentVolumes associated with StorageClass %s", class.Name))
residualPVs, err = waitForProvisionedVolumesDeleted(c, class.Name)
Expect(err).NotTo(HaveOccurred())
// Cleanup the test resources before breaking
defer deleteProvisionedVolumesAndDisks(c, residualPVs)
// Report indicators of regression
if len(residualPVs) > 0 {
framework.Logf("Remaining PersistentVolumes:")
for i, pv := range residualPVs {
framework.Logf("\t%d) %s", i+1, pv.Name)
}
framework.Failf("Expected 0 PersistentVolumes remaining. Found %d", len(residualPVs))
}
framework.Logf("0 PersistentVolumes remain.")
})
It("deletion should be idempotent", func() {
// This test ensures that deletion of a volume is idempotent.
// It creates a PV with Retain policy, deletes underlying AWS / GCE
// volume and changes the reclaim policy to Delete.
// PV controller should delete the PV even though the underlying volume
// is already deleted.
framework.SkipUnlessProviderIs("gce", "gke", "aws")
By("creating PD")
diskName, err := framework.CreatePDWithRetry()
framework.ExpectNoError(err)
By("creating PV")
pv := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "volume-idempotent-delete-",
},
Spec: v1.PersistentVolumeSpec{
// Use Retain to keep the PV, the test will change it to Delete
// when the time comes.
PersistentVolumeReclaimPolicy: v1.PersistentVolumeReclaimRetain,
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1Gi"),
},
// PV is bound to non-existing PVC, so it's reclaim policy is
// executed immediately
ClaimRef: &v1.ObjectReference{
Kind: "PersistentVolumeClaim",
APIVersion: "v1",
UID: types.UID("01234567890"),
Namespace: ns,
Name: "dummy-claim-name",
},
},
}
switch framework.TestContext.Provider {
case "aws":
pv.Spec.PersistentVolumeSource = v1.PersistentVolumeSource{
AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
VolumeID: diskName,
},
}
case "gce", "gke":
pv.Spec.PersistentVolumeSource = v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
PDName: diskName,
},
}
}
pv, err = c.CoreV1().PersistentVolumes().Create(pv)
framework.ExpectNoError(err)
By("waiting for the PV to get Released")
err = framework.WaitForPersistentVolumePhase(v1.VolumeReleased, c, pv.Name, 2*time.Second, framework.PVReclaimingTimeout)
framework.ExpectNoError(err)
By("deleting the PD")
err = framework.DeletePVSource(&pv.Spec.PersistentVolumeSource)
framework.ExpectNoError(err)
By("changing the PV reclaim policy")
pv, err = c.CoreV1().PersistentVolumes().Get(pv.Name, metav1.GetOptions{})
framework.ExpectNoError(err)
pv.Spec.PersistentVolumeReclaimPolicy = v1.PersistentVolumeReclaimDelete
pv, err = c.CoreV1().PersistentVolumes().Update(pv)
framework.ExpectNoError(err)
By("waiting for the PV to get deleted")
err = framework.WaitForPersistentVolumeDeleted(c, pv.Name, 5*time.Second, framework.PVDeletingTimeout)
Expect(err).NotTo(HaveOccurred())
})
})
Describe("DynamicProvisioner External", func() {
It("should let an external dynamic provisioner create and delete persistent volumes [Slow]", func() {
// external dynamic provisioner pods need additional permissions provided by the
// persistent-volume-provisioner role
framework.BindClusterRole(c.RbacV1beta1(), "system:persistent-volume-provisioner", ns,
rbacv1beta1.Subject{Kind: rbacv1beta1.ServiceAccountKind, Namespace: ns, Name: "default"})
err := framework.WaitForAuthorizationUpdate(c.AuthorizationV1beta1(),
serviceaccount.MakeUsername(ns, "default"),
"", "get", schema.GroupResource{Group: "storage.k8s.io", Resource: "storageclasses"}, true)
framework.ExpectNoError(err, "Failed to update authorization: %v", err)
By("creating an external dynamic provisioner pod")
pod := startExternalProvisioner(c, ns)
defer framework.DeletePodOrFail(c, ns, pod.Name)
By("creating a StorageClass")
test := storageClassTest{
name: "external provisioner test",
provisioner: externalPluginName,
claimSize: "1500Mi",
expectedSize: "1500Mi",
}
class := newStorageClass(test, ns, "external")
claim := newClaim(test, ns, "external")
claim.Spec.StorageClassName = &(class.Name)
By("creating a claim with a external provisioning annotation")
testDynamicProvisioning(test, c, claim, class)
})
})
Describe("DynamicProvisioner Default", func() {
It("should create and delete default persistent volumes [Slow]", func() {
framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere", "azure")
By("creating a claim with no annotation")
test := storageClassTest{
name: "default",
claimSize: "2Gi",
expectedSize: "2Gi",
}
// gce or gke
if getDefaultPluginName() == "kubernetes.io/gce-pd" {
// using GB not GiB as e2e test unit since gce-pd returns GB,
// or expectedSize may be greater than claimSize.
test.claimSize = "2G"
test.expectedSize = "2G"
}
claim := newClaim(test, ns, "default")
testDynamicProvisioning(test, c, claim, nil)
})
// Modifying the default storage class can be disruptive to other tests that depend on it
It("should be disabled by changing the default annotation[Slow] [Serial] [Disruptive]", func() {
framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere", "azure")
scName := getDefaultStorageClassName(c)
test := storageClassTest{
name: "default",
claimSize: "2Gi",
}
By("setting the is-default StorageClass annotation to false")
verifyDefaultStorageClass(c, scName, true)
defer updateDefaultStorageClass(c, scName, "true")
updateDefaultStorageClass(c, scName, "false")
By("creating a claim with default storageclass and expecting it to timeout")
claim := newClaim(test, ns, "default")
claim, err := c.CoreV1().PersistentVolumeClaims(ns).Create(claim)
Expect(err).NotTo(HaveOccurred())
defer func() {
framework.ExpectNoError(framework.DeletePersistentVolumeClaim(c, claim.Name, ns))
}()
// The claim should timeout phase:Pending
err = framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, c, ns, claim.Name, 2*time.Second, framework.ClaimProvisionTimeout)
Expect(err).To(HaveOccurred())
framework.Logf(err.Error())
claim, err = c.CoreV1().PersistentVolumeClaims(ns).Get(claim.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
Expect(claim.Status.Phase).To(Equal(v1.ClaimPending))
})
// Modifying the default storage class can be disruptive to other tests that depend on it
It("should be disabled by removing the default annotation[Slow] [Serial] [Disruptive]", func() {
framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere", "azure")
scName := getDefaultStorageClassName(c)
test := storageClassTest{
name: "default",
claimSize: "2Gi",
}
By("removing the is-default StorageClass annotation")
verifyDefaultStorageClass(c, scName, true)
defer updateDefaultStorageClass(c, scName, "true")
updateDefaultStorageClass(c, scName, "")
By("creating a claim with default storageclass and expecting it to timeout")
claim := newClaim(test, ns, "default")
claim, err := c.CoreV1().PersistentVolumeClaims(ns).Create(claim)
Expect(err).NotTo(HaveOccurred())
defer func() {
framework.ExpectNoError(framework.DeletePersistentVolumeClaim(c, claim.Name, ns))
}()
// The claim should timeout phase:Pending
err = framework.WaitForPersistentVolumeClaimPhase(v1.ClaimBound, c, ns, claim.Name, 2*time.Second, framework.ClaimProvisionTimeout)
Expect(err).To(HaveOccurred())
framework.Logf(err.Error())
claim, err = c.CoreV1().PersistentVolumeClaims(ns).Get(claim.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
Expect(claim.Status.Phase).To(Equal(v1.ClaimPending))
})
})
})
func getDefaultStorageClassName(c clientset.Interface) string {
list, err := c.StorageV1().StorageClasses().List(metav1.ListOptions{})
if err != nil {
framework.Failf("Error listing storage classes: %v", err)
}
var scName string
for _, sc := range list.Items {
if storageutil.IsDefaultAnnotation(sc.ObjectMeta) {
if len(scName) != 0 {
framework.Failf("Multiple default storage classes found: %q and %q", scName, sc.Name)
}
scName = sc.Name
}
}
if len(scName) == 0 {
framework.Failf("No default storage class found")
}
framework.Logf("Default storage class: %q", scName)
return scName
}
func verifyDefaultStorageClass(c clientset.Interface, scName string, expectedDefault bool) {
sc, err := c.StorageV1().StorageClasses().Get(scName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
Expect(storageutil.IsDefaultAnnotation(sc.ObjectMeta)).To(Equal(expectedDefault))
}
func updateDefaultStorageClass(c clientset.Interface, scName string, defaultStr string) {
sc, err := c.StorageV1().StorageClasses().Get(scName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
if defaultStr == "" {
delete(sc.Annotations, storageutil.BetaIsDefaultStorageClassAnnotation)
delete(sc.Annotations, storageutil.IsDefaultStorageClassAnnotation)
} else {
if sc.Annotations == nil {
sc.Annotations = make(map[string]string)
}
sc.Annotations[storageutil.BetaIsDefaultStorageClassAnnotation] = defaultStr
sc.Annotations[storageutil.IsDefaultStorageClassAnnotation] = defaultStr
}
sc, err = c.StorageV1().StorageClasses().Update(sc)
Expect(err).NotTo(HaveOccurred())
expectedDefault := false
if defaultStr == "true" {
expectedDefault = true
}
verifyDefaultStorageClass(c, scName, expectedDefault)
}
func newClaim(t storageClassTest, ns, suffix string) *v1.PersistentVolumeClaim {
claim := v1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "pvc-",
Namespace: ns,
},
Spec: v1.PersistentVolumeClaimSpec{
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse(t.claimSize),
},
},
},
}
return &claim
}
// runInPodWithVolume runs a command in a pod with given claim mounted to /mnt directory.
func runInPodWithVolume(c clientset.Interface, ns, claimName, nodeName, command string) {
pod := &v1.Pod{
TypeMeta: metav1.TypeMeta{
Kind: "Pod",
APIVersion: "v1",
},
ObjectMeta: metav1.ObjectMeta{
GenerateName: "pvc-volume-tester-",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "volume-tester",
Image: "busybox",
Command: []string{"/bin/sh"},
Args: []string{"-c", command},
VolumeMounts: []v1.VolumeMount{
{
Name: "my-volume",
MountPath: "/mnt/test",
},
},
},
},
RestartPolicy: v1.RestartPolicyNever,
Volumes: []v1.Volume{
{
Name: "my-volume",
VolumeSource: v1.VolumeSource{
PersistentVolumeClaim: &v1.PersistentVolumeClaimVolumeSource{
ClaimName: claimName,
ReadOnly: false,
},
},
},
},
},
}
if len(nodeName) != 0 {
pod.Spec.NodeName = nodeName
}
pod, err := c.CoreV1().Pods(ns).Create(pod)
framework.ExpectNoError(err, "Failed to create pod: %v", err)
defer func() {
framework.DeletePodOrFail(c, ns, pod.Name)
}()
framework.ExpectNoError(framework.WaitForPodSuccessInNamespaceSlow(c, pod.Name, pod.Namespace))
}
func getDefaultPluginName() string {
switch {
case framework.ProviderIs("gke"), framework.ProviderIs("gce"):
return "kubernetes.io/gce-pd"
case framework.ProviderIs("aws"):
return "kubernetes.io/aws-ebs"
case framework.ProviderIs("openstack"):
return "kubernetes.io/cinder"
case framework.ProviderIs("vsphere"):
return "kubernetes.io/vsphere-volume"
case framework.ProviderIs("azure"):
return "kubernetes.io/azure-disk"
}
return ""
}
func newStorageClass(t storageClassTest, ns string, suffix string) *storage.StorageClass {
pluginName := t.provisioner
if pluginName == "" {
pluginName = getDefaultPluginName()
}
if suffix == "" {
suffix = "sc"
}
return &storage.StorageClass{
TypeMeta: metav1.TypeMeta{
Kind: "StorageClass",
},
ObjectMeta: metav1.ObjectMeta{
// Name must be unique, so let's base it on namespace name
Name: ns + "-" + suffix,
},
Provisioner: pluginName,
Parameters: t.parameters,
}
}
// TODO: remove when storage.k8s.io/v1beta1 is removed.
func newBetaStorageClass(t storageClassTest, suffix string) *storagebeta.StorageClass {
pluginName := t.provisioner
if pluginName == "" {
pluginName = getDefaultPluginName()
}
if suffix == "" {
suffix = "default"
}
return &storagebeta.StorageClass{
TypeMeta: metav1.TypeMeta{
Kind: "StorageClass",
},
ObjectMeta: metav1.ObjectMeta{
GenerateName: suffix + "-",
},
Provisioner: pluginName,
Parameters: t.parameters,
}
}
func startExternalProvisioner(c clientset.Interface, ns string) *v1.Pod {
podClient := c.CoreV1().Pods(ns)
provisionerPod := &v1.Pod{
TypeMeta: metav1.TypeMeta{
Kind: "Pod",
APIVersion: "v1",
},
ObjectMeta: metav1.ObjectMeta{
GenerateName: "external-provisioner-",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "nfs-provisioner",
Image: "quay.io/kubernetes_incubator/nfs-provisioner:v1.0.9",
SecurityContext: &v1.SecurityContext{
Capabilities: &v1.Capabilities{
Add: []v1.Capability{"DAC_READ_SEARCH"},
},
},
Args: []string{
"-provisioner=" + externalPluginName,
"-grace-period=0",
},
Ports: []v1.ContainerPort{
{Name: "nfs", ContainerPort: 2049},
{Name: "mountd", ContainerPort: 20048},