-
Notifications
You must be signed in to change notification settings - Fork 39.5k
/
pods.go
1145 lines (1036 loc) · 42.5 KB
/
pods.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 node
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"runtime/debug"
"strconv"
"strings"
"time"
"k8s.io/client-go/util/retry"
"golang.org/x/net/websocket"
v1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
utilrand "k8s.io/apimachinery/pkg/util/rand"
"k8s.io/apimachinery/pkg/util/uuid"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/tools/cache"
watchtools "k8s.io/client-go/tools/watch"
"k8s.io/kubectl/pkg/util/podutils"
podutil "k8s.io/kubernetes/pkg/api/v1/pod"
"k8s.io/kubernetes/pkg/kubelet"
"k8s.io/kubernetes/test/e2e/framework"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
e2epodoutput "k8s.io/kubernetes/test/e2e/framework/pod/output"
e2ewebsocket "k8s.io/kubernetes/test/e2e/framework/websocket"
imageutils "k8s.io/kubernetes/test/utils/image"
admissionapi "k8s.io/pod-security-admission/api"
"k8s.io/utils/pointer"
"github.com/onsi/ginkgo/v2"
"github.com/onsi/gomega"
)
const (
buildBackOffDuration = time.Minute
syncLoopFrequency = 10 * time.Second
maxBackOffTolerance = time.Duration(1.3 * float64(kubelet.MaxContainerBackOff))
podRetryPeriod = 1 * time.Second
)
// testHostIP tests that a pod gets a host IP
func testHostIP(ctx context.Context, podClient *e2epod.PodClient, pod *v1.Pod) {
ginkgo.By("creating pod")
podClient.CreateSync(ctx, pod)
// Try to make sure we get a hostIP for each pod.
hostIPTimeout := 2 * time.Minute
t := time.Now()
for {
p, err := podClient.Get(ctx, pod.Name, metav1.GetOptions{})
framework.ExpectNoError(err, "Failed to get pod %q", pod.Name)
if p.Status.HostIP != "" {
framework.Logf("Pod %s has hostIP: %s", p.Name, p.Status.HostIP)
break
}
if time.Since(t) >= hostIPTimeout {
framework.Failf("Gave up waiting for hostIP of pod %s after %v seconds",
p.Name, time.Since(t).Seconds())
}
framework.Logf("Retrying to get the hostIP of pod %s", p.Name)
time.Sleep(5 * time.Second)
}
}
func startPodAndGetBackOffs(ctx context.Context, podClient *e2epod.PodClient, pod *v1.Pod, sleepAmount time.Duration) (time.Duration, time.Duration) {
podClient.CreateSync(ctx, pod)
time.Sleep(sleepAmount)
gomega.Expect(pod.Spec.Containers).NotTo(gomega.BeEmpty())
podName := pod.Name
containerName := pod.Spec.Containers[0].Name
ginkgo.By("getting restart delay-0")
_, err := getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
ginkgo.By("getting restart delay-1")
delay1, err := getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
ginkgo.By("getting restart delay-2")
delay2, err := getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
return delay1, delay2
}
func getRestartDelay(ctx context.Context, podClient *e2epod.PodClient, podName string, containerName string) (time.Duration, error) {
beginTime := time.Now()
var previousRestartCount int32 = -1
var previousFinishedAt time.Time
for time.Since(beginTime) < (2 * maxBackOffTolerance) { // may just miss the 1st MaxContainerBackOff delay
time.Sleep(time.Second)
pod, err := podClient.Get(ctx, podName, metav1.GetOptions{})
framework.ExpectNoError(err, fmt.Sprintf("getting pod %s", podName))
status, ok := podutil.GetContainerStatus(pod.Status.ContainerStatuses, containerName)
if !ok {
framework.Logf("getRestartDelay: status missing")
continue
}
// the only case this happens is if this is the first time the Pod is running and there is no "Last State".
if status.LastTerminationState.Terminated == nil {
framework.Logf("Container's last state is not \"Terminated\".")
continue
}
if previousRestartCount == -1 {
if status.State.Running != nil {
// container is still Running, there is no "FinishedAt" time.
continue
} else if status.State.Terminated != nil {
previousFinishedAt = status.State.Terminated.FinishedAt.Time
} else {
previousFinishedAt = status.LastTerminationState.Terminated.FinishedAt.Time
}
previousRestartCount = status.RestartCount
}
// when the RestartCount is changed, the Containers will be in one of the following states:
//Running, Terminated, Waiting (it already is waiting for the backoff period to expire, and the last state details have been stored into status.LastTerminationState).
if status.RestartCount > previousRestartCount {
var startedAt time.Time
if status.State.Running != nil {
startedAt = status.State.Running.StartedAt.Time
} else if status.State.Terminated != nil {
startedAt = status.State.Terminated.StartedAt.Time
} else {
startedAt = status.LastTerminationState.Terminated.StartedAt.Time
}
framework.Logf("getRestartDelay: restartCount = %d, finishedAt=%s restartedAt=%s (%s)", status.RestartCount, previousFinishedAt, startedAt, startedAt.Sub(previousFinishedAt))
return startedAt.Sub(previousFinishedAt), nil
}
}
return 0, fmt.Errorf("timeout getting pod restart delay")
}
// expectNoErrorWithRetries checks if an error occurs with the given retry count.
func expectNoErrorWithRetries(fn func() error, maxRetries int, explain ...interface{}) {
// TODO (pohly): replace the entire function with gomege.Eventually.
var err error
for i := 0; i < maxRetries; i++ {
err = fn()
if err == nil {
return
}
framework.Logf("(Attempt %d of %d) Unexpected error occurred: %v", i+1, maxRetries, err)
}
if err != nil {
debug.PrintStack()
}
gomega.ExpectWithOffset(1, err).NotTo(gomega.HaveOccurred(), explain...)
}
var _ = SIGDescribe("Pods", func() {
f := framework.NewDefaultFramework("pods")
f.NamespacePodSecurityEnforceLevel = admissionapi.LevelRestricted
var podClient *e2epod.PodClient
var dc dynamic.Interface
ginkgo.BeforeEach(func() {
podClient = e2epod.NewPodClient(f)
dc = f.DynamicClient
})
/*
Release: v1.9
Testname: Pods, assigned hostip
Description: Create a Pod. Pod status MUST return successfully and contains a valid IP address.
*/
framework.ConformanceIt("should get a host IP [NodeConformance]", func(ctx context.Context) {
name := "pod-hostip-" + string(uuid.NewUUID())
testHostIP(ctx, podClient, e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "test",
Image: imageutils.GetPauseImageName(),
},
},
},
}))
})
/*
Release: v1.9
Testname: Pods, lifecycle
Description: A Pod is created with a unique label. Pod MUST be accessible when queried using the label selector upon creation. Add a watch, check if the Pod is running. Pod then deleted, The pod deletion timestamp is observed. The watch MUST return the pod deleted event. Query with the original selector for the Pod MUST return empty list.
*/
framework.ConformanceIt("should be submitted and removed [NodeConformance]", func(ctx context.Context) {
ginkgo.By("creating the pod")
name := "pod-submit-remove-" + string(uuid.NewUUID())
value := strconv.Itoa(time.Now().Nanosecond())
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": "foo",
"time": value,
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "pause",
Image: imageutils.GetPauseImageName(),
},
},
},
})
ginkgo.By("setting up watch")
selector := labels.SelectorFromSet(labels.Set(map[string]string{"time": value}))
options := metav1.ListOptions{LabelSelector: selector.String()}
pods, err := podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 0)
lw := &cache.ListWatch{
ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
options.LabelSelector = selector.String()
podList, err := podClient.List(ctx, options)
return podList, err
},
WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
options.LabelSelector = selector.String()
return podClient.Watch(ctx, options)
},
}
_, informer, w, _ := watchtools.NewIndexerInformerWatcher(lw, &v1.Pod{})
defer w.Stop()
ctxUntil, cancelCtx := context.WithTimeout(ctx, wait.ForeverTestTimeout)
defer cancelCtx()
if !cache.WaitForCacheSync(ctxUntil.Done(), informer.HasSynced) {
framework.Failf("Timeout while waiting to Pod informer to sync")
}
ginkgo.By("submitting the pod to kubernetes")
podClient.Create(ctx, pod)
ginkgo.By("verifying the pod is in kubernetes")
selector = labels.SelectorFromSet(labels.Set(map[string]string{"time": value}))
options = metav1.ListOptions{LabelSelector: selector.String()}
pods, err = podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 1)
ginkgo.By("verifying pod creation was observed")
select {
case event := <-w.ResultChan():
if event.Type != watch.Added {
framework.Failf("Failed to observe pod creation: %v", event)
}
case <-time.After(framework.PodStartTimeout):
framework.Failf("Timeout while waiting for pod creation")
}
// We need to wait for the pod to be running, otherwise the deletion
// may be carried out immediately rather than gracefully.
framework.ExpectNoError(e2epod.WaitForPodNameRunningInNamespace(ctx, f.ClientSet, pod.Name, f.Namespace.Name))
// save the running pod
pod, err = podClient.Get(ctx, pod.Name, metav1.GetOptions{})
framework.ExpectNoError(err, "failed to GET scheduled pod")
ginkgo.By("deleting the pod gracefully")
err = podClient.Delete(ctx, pod.Name, *metav1.NewDeleteOptions(30))
framework.ExpectNoError(err, "failed to delete pod")
ginkgo.By("verifying pod deletion was observed")
deleted := false
var lastPod *v1.Pod
timer := time.After(e2epod.DefaultPodDeletionTimeout)
for !deleted {
select {
case event := <-w.ResultChan():
switch event.Type {
case watch.Deleted:
lastPod = event.Object.(*v1.Pod)
deleted = true
case watch.Error:
framework.Logf("received a watch error: %v", event.Object)
framework.Failf("watch closed with error")
}
case <-timer:
framework.Failf("timed out waiting for pod deletion")
}
}
if !deleted {
framework.Failf("Failed to observe pod deletion")
}
gomega.Expect(lastPod.DeletionTimestamp).ToNot(gomega.BeNil())
gomega.Expect(lastPod.Spec.TerminationGracePeriodSeconds).ToNot(gomega.BeZero())
selector = labels.SelectorFromSet(labels.Set(map[string]string{"time": value}))
options = metav1.ListOptions{LabelSelector: selector.String()}
pods, err = podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 0)
})
/*
Release: v1.9
Testname: Pods, update
Description: Create a Pod with a unique label. Query for the Pod with the label as selector MUST be successful. Update the pod to change the value of the Label. Query for the Pod with the new value for the label MUST be successful.
*/
framework.ConformanceIt("should be updated [NodeConformance]", func(ctx context.Context) {
ginkgo.By("creating the pod")
name := "pod-update-" + string(uuid.NewUUID())
value := strconv.Itoa(time.Now().Nanosecond())
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": "foo",
"time": value,
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "pause",
Image: imageutils.GetPauseImageName(),
},
},
},
})
ginkgo.By("submitting the pod to kubernetes")
pod = podClient.CreateSync(ctx, pod)
ginkgo.By("verifying the pod is in kubernetes")
selector := labels.SelectorFromSet(labels.Set(map[string]string{"time": value}))
options := metav1.ListOptions{LabelSelector: selector.String()}
pods, err := podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 1)
ginkgo.By("updating the pod")
podClient.Update(ctx, name, func(pod *v1.Pod) {
value = strconv.Itoa(time.Now().Nanosecond())
pod.Labels["time"] = value
})
framework.ExpectNoError(e2epod.WaitForPodNameRunningInNamespace(ctx, f.ClientSet, pod.Name, f.Namespace.Name))
ginkgo.By("verifying the updated pod is in kubernetes")
selector = labels.SelectorFromSet(labels.Set(map[string]string{"time": value}))
options = metav1.ListOptions{LabelSelector: selector.String()}
pods, err = podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 1)
framework.Logf("Pod update OK")
})
/*
Release: v1.9
Testname: Pods, ActiveDeadlineSeconds
Description: Create a Pod with a unique label. Query for the Pod with the label as selector MUST be successful. The Pod is updated with ActiveDeadlineSeconds set on the Pod spec. Pod MUST terminate of the specified time elapses.
*/
framework.ConformanceIt("should allow activeDeadlineSeconds to be updated [NodeConformance]", func(ctx context.Context) {
ginkgo.By("creating the pod")
name := "pod-update-activedeadlineseconds-" + string(uuid.NewUUID())
value := strconv.Itoa(time.Now().Nanosecond())
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": "foo",
"time": value,
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "pause",
Image: imageutils.GetPauseImageName(),
},
},
},
})
ginkgo.By("submitting the pod to kubernetes")
podClient.CreateSync(ctx, pod)
ginkgo.By("verifying the pod is in kubernetes")
selector := labels.SelectorFromSet(labels.Set{"time": value})
options := metav1.ListOptions{LabelSelector: selector.String()}
pods, err := podClient.List(ctx, options)
framework.ExpectNoError(err, "failed to query for pods")
framework.ExpectEqual(len(pods.Items), 1)
ginkgo.By("updating the pod")
podClient.Update(ctx, name, func(pod *v1.Pod) {
newDeadline := int64(5)
pod.Spec.ActiveDeadlineSeconds = &newDeadline
})
framework.ExpectNoError(e2epod.WaitForPodTerminatedInNamespace(ctx, f.ClientSet, pod.Name, "DeadlineExceeded", f.Namespace.Name))
})
/*
Release: v1.9
Testname: Pods, service environment variables
Description: Create a server Pod listening on port 9376. A Service called fooservice is created for the server Pod listening on port 8765 targeting port 8080. If a new Pod is created in the cluster then the Pod MUST have the fooservice environment variables available from this new Pod. The new create Pod MUST have environment variables such as FOOSERVICE_SERVICE_HOST, FOOSERVICE_SERVICE_PORT, FOOSERVICE_PORT, FOOSERVICE_PORT_8765_TCP_PORT, FOOSERVICE_PORT_8765_TCP_PROTO, FOOSERVICE_PORT_8765_TCP and FOOSERVICE_PORT_8765_TCP_ADDR that are populated with proper values.
*/
framework.ConformanceIt("should contain environment variables for services [NodeConformance]", func(ctx context.Context) {
// Make a pod that will be a service.
// This pod serves its hostname via HTTP.
serverName := "server-envvars-" + string(uuid.NewUUID())
serverPod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: serverName,
Labels: map[string]string{"name": serverName},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "srv",
Image: framework.ServeHostnameImage,
Ports: []v1.ContainerPort{{ContainerPort: 9376}},
},
},
},
})
podClient.CreateSync(ctx, serverPod)
// This service exposes port 8080 of the test pod as a service on port 8765
// TODO(filbranden): We would like to use a unique service name such as:
// svcName := "svc-envvars-" + randomSuffix()
// However, that affects the name of the environment variables which are the capitalized
// service name, so that breaks this test. One possibility is to tweak the variable names
// to match the service. Another is to rethink environment variable names and possibly
// allow overriding the prefix in the service manifest.
svcName := "fooservice"
svc := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: svcName,
Labels: map[string]string{
"name": svcName,
},
},
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{
Port: 8765,
TargetPort: intstr.FromInt(8080),
}},
Selector: map[string]string{
"name": serverName,
},
},
}
_, err := f.ClientSet.CoreV1().Services(f.Namespace.Name).Create(ctx, svc, metav1.CreateOptions{})
framework.ExpectNoError(err, "failed to create service")
// Make a client pod that verifies that it has the service environment variables.
podName := "client-envvars-" + string(uuid.NewUUID())
const containerName = "env3cont"
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{"name": podName},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: containerName,
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"sh", "-c", "env"},
},
},
RestartPolicy: v1.RestartPolicyNever,
},
})
// It's possible for the Pod to be created before the Kubelet is updated with the new
// service. In that case, we just retry.
const maxRetries = 3
expectedVars := []string{
"FOOSERVICE_SERVICE_HOST=",
"FOOSERVICE_SERVICE_PORT=",
"FOOSERVICE_PORT=",
"FOOSERVICE_PORT_8765_TCP_PORT=",
"FOOSERVICE_PORT_8765_TCP_PROTO=",
"FOOSERVICE_PORT_8765_TCP=",
"FOOSERVICE_PORT_8765_TCP_ADDR=",
}
expectNoErrorWithRetries(func() error {
return e2epodoutput.MatchContainerOutput(ctx, f, pod, containerName, expectedVars, gomega.ContainSubstring)
}, maxRetries, "Container should have service environment variables set")
})
/*
Release: v1.13
Testname: Pods, remote command execution over websocket
Description: A Pod is created. Websocket is created to retrieve exec command output from this pod.
Message retrieved form Websocket MUST match with expected exec command output.
*/
framework.ConformanceIt("should support remote command execution over websockets [NodeConformance]", func(ctx context.Context) {
config, err := framework.LoadConfig()
framework.ExpectNoError(err, "unable to get base config")
ginkgo.By("creating the pod")
name := "pod-exec-websocket-" + string(uuid.NewUUID())
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "main",
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-c", "echo container is alive; sleep 600"},
},
},
},
})
ginkgo.By("submitting the pod to kubernetes")
pod = podClient.CreateSync(ctx, pod)
req := f.ClientSet.CoreV1().RESTClient().Get().
Namespace(f.Namespace.Name).
Resource("pods").
Name(pod.Name).
Suffix("exec").
Param("stderr", "1").
Param("stdout", "1").
Param("container", pod.Spec.Containers[0].Name).
Param("command", "echo").
Param("command", "remote execution test")
url := req.URL()
ws, err := e2ewebsocket.OpenWebSocketForURL(url, config, []string{"channel.k8s.io"})
if err != nil {
framework.Failf("Failed to open websocket to %s: %v", url.String(), err)
}
defer ws.Close()
buf := &bytes.Buffer{}
gomega.Eventually(ctx, func() error {
for {
var msg []byte
if err := websocket.Message.Receive(ws, &msg); err != nil {
if err == io.EOF {
break
}
framework.Failf("Failed to read completely from websocket %s: %v", url.String(), err)
}
if len(msg) == 0 {
continue
}
if msg[0] != 1 {
if len(msg) == 1 {
// skip an empty message on stream other than stdout
continue
} else {
framework.Failf("Got message from server that didn't start with channel 1 (STDOUT): %v", msg)
}
}
buf.Write(msg[1:])
}
if buf.Len() == 0 {
return fmt.Errorf("unexpected output from server")
}
if !strings.Contains(buf.String(), "remote execution test") {
return fmt.Errorf("expected to find 'remote execution test' in %q", buf.String())
}
return nil
}, time.Minute, 10*time.Second).Should(gomega.BeNil())
})
/*
Release: v1.13
Testname: Pods, logs from websockets
Description: A Pod is created. Websocket is created to retrieve log of a container from this pod.
Message retrieved form Websocket MUST match with container's output.
*/
framework.ConformanceIt("should support retrieving logs from the container over websockets [NodeConformance]", func(ctx context.Context) {
config, err := framework.LoadConfig()
framework.ExpectNoError(err, "unable to get base config")
ginkgo.By("creating the pod")
name := "pod-logs-websocket-" + string(uuid.NewUUID())
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "main",
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-c", "echo container is alive; sleep 10000"},
},
},
},
})
ginkgo.By("submitting the pod to kubernetes")
podClient.CreateSync(ctx, pod)
req := f.ClientSet.CoreV1().RESTClient().Get().
Namespace(f.Namespace.Name).
Resource("pods").
Name(pod.Name).
Suffix("log").
Param("container", pod.Spec.Containers[0].Name)
url := req.URL()
ws, err := e2ewebsocket.OpenWebSocketForURL(url, config, []string{"binary.k8s.io"})
if err != nil {
framework.Failf("Failed to open websocket to %s: %v", url.String(), err)
}
defer ws.Close()
buf := &bytes.Buffer{}
for {
var msg []byte
if err := websocket.Message.Receive(ws, &msg); err != nil {
if err == io.EOF {
break
}
framework.Failf("Failed to read completely from websocket %s: %v", url.String(), err)
}
if len(strings.TrimSpace(string(msg))) == 0 {
continue
}
buf.Write(msg)
}
if buf.String() != "container is alive\n" {
framework.Failf("Unexpected websocket logs:\n%s", buf.String())
}
})
// Slow (~7 mins)
ginkgo.It("should have their auto-restart back-off timer reset on image update [Slow][NodeConformance]", func(ctx context.Context) {
podName := "pod-back-off-image"
containerName := "back-off"
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{"test": "back-off-image"},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: containerName,
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-c", "sleep 5", "/crash/missing"},
},
},
},
})
delay1, delay2 := startPodAndGetBackOffs(ctx, podClient, pod, buildBackOffDuration)
ginkgo.By("updating the image")
podClient.Update(ctx, podName, func(pod *v1.Pod) {
pod.Spec.Containers[0].Image = imageutils.GetE2EImage(imageutils.Nginx)
})
time.Sleep(syncLoopFrequency)
framework.ExpectNoError(e2epod.WaitForPodNameRunningInNamespace(ctx, f.ClientSet, pod.Name, f.Namespace.Name))
ginkgo.By("get restart delay after image update")
delayAfterUpdate, err := getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
if delayAfterUpdate > 2*delay2 || delayAfterUpdate > 2*delay1 {
framework.Failf("updating image did not reset the back-off value in pod=%s/%s d3=%s d2=%s d1=%s", podName, containerName, delayAfterUpdate, delay1, delay2)
}
})
// Slow by design (~27 mins) issue #19027
ginkgo.It("should cap back-off at MaxContainerBackOff [Slow][NodeConformance]", func(ctx context.Context) {
podName := "back-off-cap"
containerName := "back-off-cap"
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{"test": "liveness"},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: containerName,
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-c", "sleep 5", "/crash/missing"},
},
},
},
})
podClient.CreateSync(ctx, pod)
time.Sleep(2 * kubelet.MaxContainerBackOff) // it takes slightly more than 2*x to get to a back-off of x
// wait for a delay == capped delay of MaxContainerBackOff
ginkgo.By("getting restart delay when capped")
var (
delay1 time.Duration
err error
)
for i := 0; i < 3; i++ {
delay1, err = getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
if delay1 < kubelet.MaxContainerBackOff {
continue
}
}
if (delay1 < kubelet.MaxContainerBackOff) || (delay1 > maxBackOffTolerance) {
framework.Failf("expected %s back-off got=%s in delay1", kubelet.MaxContainerBackOff, delay1)
}
ginkgo.By("getting restart delay after a capped delay")
delay2, err := getRestartDelay(ctx, podClient, podName, containerName)
if err != nil {
framework.Failf("timed out waiting for container restart in pod=%s/%s", podName, containerName)
}
if delay2 < kubelet.MaxContainerBackOff || delay2 > maxBackOffTolerance { // syncloop cumulative drift
framework.Failf("expected %s back-off got=%s on delay2", kubelet.MaxContainerBackOff, delay2)
}
})
ginkgo.It("should support pod readiness gates [NodeConformance]", func(ctx context.Context) {
podName := "pod-ready"
readinessGate1 := "k8s.io/test-condition1"
readinessGate2 := "k8s.io/test-condition2"
patchStatusFmt := `{"status":{"conditions":[{"type":%q, "status":%q}]}}`
pod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podName,
Labels: map[string]string{"test": "pod-readiness-gate"},
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "pod-readiness-gate",
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-c", "echo container is alive; sleep 10000"},
},
},
ReadinessGates: []v1.PodReadinessGate{
{ConditionType: v1.PodConditionType(readinessGate1)},
{ConditionType: v1.PodConditionType(readinessGate2)},
},
},
})
validatePodReadiness := func(expectReady bool) {
err := wait.Poll(time.Second, time.Minute, func() (bool, error) {
pod, err := podClient.Get(ctx, podName, metav1.GetOptions{})
framework.ExpectNoError(err)
podReady := podutils.IsPodReady(pod)
res := expectReady == podReady
if !res {
framework.Logf("Expect the Ready condition of pod %q to be %v, but got %v (pod status %#v)", podName, expectReady, podReady, pod.Status)
}
return res, nil
})
framework.ExpectNoError(err)
}
ginkgo.By("submitting the pod to kubernetes")
e2epod.NewPodClient(f).Create(ctx, pod)
framework.ExpectNoError(e2epod.WaitForPodNameRunningInNamespace(ctx, f.ClientSet, pod.Name, f.Namespace.Name))
if podClient.PodIsReady(ctx, podName) {
framework.Failf("Expect pod(%s/%s)'s Ready condition to be false initially.", f.Namespace.Name, pod.Name)
}
ginkgo.By(fmt.Sprintf("patching pod status with condition %q to true", readinessGate1))
_, err := podClient.Patch(ctx, podName, types.StrategicMergePatchType, []byte(fmt.Sprintf(patchStatusFmt, readinessGate1, "True")), metav1.PatchOptions{}, "status")
framework.ExpectNoError(err)
// Sleep for 10 seconds.
time.Sleep(syncLoopFrequency)
// Verify the pod is still not ready
if podClient.PodIsReady(ctx, podName) {
framework.Failf("Expect pod(%s/%s)'s Ready condition to be false with only one condition in readinessGates equal to True", f.Namespace.Name, pod.Name)
}
ginkgo.By(fmt.Sprintf("patching pod status with condition %q to true", readinessGate2))
_, err = podClient.Patch(ctx, podName, types.StrategicMergePatchType, []byte(fmt.Sprintf(patchStatusFmt, readinessGate2, "True")), metav1.PatchOptions{}, "status")
framework.ExpectNoError(err)
validatePodReadiness(true)
ginkgo.By(fmt.Sprintf("patching pod status with condition %q to false", readinessGate1))
_, err = podClient.Patch(ctx, podName, types.StrategicMergePatchType, []byte(fmt.Sprintf(patchStatusFmt, readinessGate1, "False")), metav1.PatchOptions{}, "status")
framework.ExpectNoError(err)
validatePodReadiness(false)
})
/*
Release: v1.19
Testname: Pods, delete a collection
Description: A set of pods is created with a label selector which MUST be found when listed.
The set of pods is deleted and MUST NOT show up when listed by its label selector.
*/
framework.ConformanceIt("should delete a collection of pods", func(ctx context.Context) {
podTestNames := []string{"test-pod-1", "test-pod-2", "test-pod-3"}
one := int64(1)
ginkgo.By("Create set of pods")
// create a set of pods in test namespace
for _, podTestName := range podTestNames {
_, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(ctx,
e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: podTestName,
Labels: map[string]string{
"type": "Testing",
},
},
Spec: v1.PodSpec{
TerminationGracePeriodSeconds: &one,
Containers: []v1.Container{{
Image: imageutils.GetE2EImage(imageutils.Agnhost),
Name: "token-test",
}},
RestartPolicy: v1.RestartPolicyNever,
}}), metav1.CreateOptions{})
framework.ExpectNoError(err, "failed to create pod")
framework.Logf("created %v", podTestName)
}
// wait as required for all 3 pods to be running
ginkgo.By("waiting for all 3 pods to be running")
err := e2epod.WaitForPodsRunningReady(ctx, f.ClientSet, f.Namespace.Name, 3, 0, f.Timeouts.PodStart, nil)
framework.ExpectNoError(err, "3 pods not found running.")
// delete Collection of pods with a label in the current namespace
err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).DeleteCollection(ctx, metav1.DeleteOptions{GracePeriodSeconds: &one}, metav1.ListOptions{
LabelSelector: "type=Testing"})
framework.ExpectNoError(err, "failed to delete collection of pods")
// wait for all pods to be deleted
ginkgo.By("waiting for all pods to be deleted")
err = wait.PollImmediateWithContext(ctx, podRetryPeriod, f.Timeouts.PodDelete, checkPodListQuantity(f, "type=Testing", 0))
framework.ExpectNoError(err, "found a pod(s)")
})
/*
Release: v1.20
Testname: Pods, completes the lifecycle of a Pod and the PodStatus
Description: A Pod is created with a static label which MUST succeed. It MUST succeed when
patching the label and the pod data. When checking and replacing the PodStatus it MUST
succeed. It MUST succeed when deleting the Pod.
*/
framework.ConformanceIt("should run through the lifecycle of Pods and PodStatus", func(ctx context.Context) {
podResource := schema.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"}
testNamespaceName := f.Namespace.Name
testPodName := "pod-test"
testPodImage := imageutils.GetE2EImage(imageutils.Agnhost)
testPodImage2 := imageutils.GetE2EImage(imageutils.Httpd)
testPodLabels := map[string]string{"test-pod-static": "true"}
testPodLabelsFlat := "test-pod-static=true"
one := int64(1)
w := &cache.ListWatch{
WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
options.LabelSelector = testPodLabelsFlat
return f.ClientSet.CoreV1().Pods(testNamespaceName).Watch(ctx, options)
},
}
podsList, err := f.ClientSet.CoreV1().Pods("").List(ctx, metav1.ListOptions{LabelSelector: testPodLabelsFlat})
framework.ExpectNoError(err, "failed to list Pods")
testPod := e2epod.MustMixinRestrictedPodSecurity(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: testPodName,
Labels: testPodLabels,
},
Spec: v1.PodSpec{
TerminationGracePeriodSeconds: &one,
Containers: []v1.Container{
{
Name: testPodName,
Image: testPodImage,
},
},
},
})
ginkgo.By("creating a Pod with a static label")
_, err = f.ClientSet.CoreV1().Pods(testNamespaceName).Create(ctx, testPod, metav1.CreateOptions{})
framework.ExpectNoError(err, "failed to create Pod %v in namespace %v", testPod.ObjectMeta.Name, testNamespaceName)
ginkgo.By("watching for Pod to be ready")
ctxUntil, cancel := context.WithTimeout(ctx, f.Timeouts.PodStart)
defer cancel()
_, err = watchtools.Until(ctxUntil, podsList.ResourceVersion, w, func(event watch.Event) (bool, error) {
if pod, ok := event.Object.(*v1.Pod); ok {
found := pod.ObjectMeta.Name == testPod.ObjectMeta.Name &&
pod.ObjectMeta.Namespace == testNamespaceName &&
pod.Labels["test-pod-static"] == "true" &&
pod.Status.Phase == v1.PodRunning
if !found {
framework.Logf("observed Pod %v in namespace %v in phase %v with labels: %v & conditions %v", pod.ObjectMeta.Name, pod.ObjectMeta.Namespace, pod.Status.Phase, pod.Labels, pod.Status.Conditions)
return false, nil
}
framework.Logf("Found Pod %v in namespace %v in phase %v with labels: %v & conditions %v", pod.ObjectMeta.Name, pod.ObjectMeta.Namespace, pod.Status.Phase, pod.Labels, pod.Status.Conditions)
return found, nil
}
framework.Logf("Observed event: %+v", event.Object)
return false, nil
})
if err != nil {
framework.Logf("failed to see event that pod is created: %v", err)
}
p, err := f.ClientSet.CoreV1().Pods(testNamespaceName).Get(ctx, testPodName, metav1.GetOptions{})
framework.ExpectNoError(err, "failed to get Pod %v in namespace %v", testPodName, testNamespaceName)
framework.ExpectEqual(p.Status.Phase, v1.PodRunning, "failed to see Pod %v in namespace %v running", p.ObjectMeta.Name, testNamespaceName)
ginkgo.By("patching the Pod with a new Label and updated data")
prePatchResourceVersion := p.ResourceVersion
podPatch, err := json.Marshal(v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{"test-pod": "patched"},
},
Spec: v1.PodSpec{
TerminationGracePeriodSeconds: &one,
Containers: []v1.Container{{
Name: testPodName,
Image: testPodImage2,
}},
},
})
framework.ExpectNoError(err, "failed to marshal JSON patch for Pod")
_, err = f.ClientSet.CoreV1().Pods(testNamespaceName).Patch(ctx, testPodName, types.StrategicMergePatchType, []byte(podPatch), metav1.PatchOptions{})
framework.ExpectNoError(err, "failed to patch Pod %s in namespace %s", testPodName, testNamespaceName)
ctxUntil, cancel = context.WithTimeout(ctx, 30*time.Second)
defer cancel()
_, err = watchtools.Until(ctxUntil, prePatchResourceVersion, w, func(event watch.Event) (bool, error) {
switch event.Type {
case watch.Modified:
if pod, ok := event.Object.(*v1.Pod); ok {
found := pod.ObjectMeta.Name == pod.Name &&
pod.Labels["test-pod-static"] == "true"
return found, nil
}
default:
framework.Logf("observed event type %v", event.Type)
}
return false, nil
})
if err != nil {
framework.Logf("failed to see %v event: %v", watch.Modified, err)
}
ginkgo.By("getting the Pod and ensuring that it's patched")
pod, err := f.ClientSet.CoreV1().Pods(testNamespaceName).Get(ctx, testPodName, metav1.GetOptions{})
framework.ExpectNoError(err, "failed to fetch Pod %s in namespace %s", testPodName, testNamespaceName)
framework.ExpectEqual(pod.ObjectMeta.Labels["test-pod"], "patched", "failed to patch Pod - missing label")