/
edged.go
1164 lines (1084 loc) · 37.6 KB
/
edged.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.
@CHANGELOG
KubeEdge Authors: To create mini-kubelet for edge deployment scenario,
This file is derived from K8S Kubelet code with reduced set of methods
Changes done are
1. Package edged got some functions from "k8s.io/kubernetes/pkg/kubelet/kubelet.go"
and made some variant
*/
package edged
import (
"encoding/json"
"fmt"
"net/http"
"os"
"sync"
"time"
"github.com/kubeedge/beehive/pkg/common/config"
"github.com/kubeedge/beehive/pkg/common/log"
"github.com/kubeedge/beehive/pkg/common/util"
"github.com/kubeedge/beehive/pkg/core"
"github.com/kubeedge/beehive/pkg/core/context"
"github.com/kubeedge/beehive/pkg/core/model"
"github.com/kubeedge/kubeedge/edge/pkg/common/modules"
"github.com/kubeedge/kubeedge/edge/pkg/edged/apis"
"github.com/kubeedge/kubeedge/edge/pkg/edged/clcm"
"github.com/kubeedge/kubeedge/edge/pkg/edged/containers"
"github.com/kubeedge/kubeedge/edge/pkg/edged/dockertools"
edgeImages "github.com/kubeedge/kubeedge/edge/pkg/edged/images"
edgepleg "github.com/kubeedge/kubeedge/edge/pkg/edged/pleg"
"github.com/kubeedge/kubeedge/edge/pkg/edged/podmanager"
"github.com/kubeedge/kubeedge/edge/pkg/edged/rainerruntime"
"github.com/kubeedge/kubeedge/edge/pkg/edged/server"
"github.com/kubeedge/kubeedge/edge/pkg/edged/status"
edgedutil "github.com/kubeedge/kubeedge/edge/pkg/edged/util"
utilpod "github.com/kubeedge/kubeedge/edge/pkg/edged/util/pod"
"github.com/kubeedge/kubeedge/edge/pkg/edged/util/record"
"github.com/kubeedge/kubeedge/edge/pkg/metamanager"
"github.com/kubeedge/kubeedge/edge/pkg/metamanager/client"
"github.com/golang/glog"
cadvisorapi "github.com/google/cadvisor/info/v1"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/clock"
"k8s.io/apimachinery/pkg/util/sets"
utilwait "k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
fakekube "k8s.io/client-go/kubernetes/fake"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/flowcontrol"
"k8s.io/client-go/util/workqueue"
internalapi "k8s.io/kubernetes/pkg/kubelet/apis/cri"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/gpu"
"k8s.io/kubernetes/pkg/kubelet/gpu/nvidia"
"k8s.io/kubernetes/pkg/kubelet/images"
"k8s.io/kubernetes/pkg/kubelet/kuberuntime"
"k8s.io/kubernetes/pkg/kubelet/lifecycle"
"k8s.io/kubernetes/pkg/kubelet/pleg"
"k8s.io/kubernetes/pkg/kubelet/prober"
proberesults "k8s.io/kubernetes/pkg/kubelet/prober/results"
"k8s.io/kubernetes/pkg/kubelet/remote"
kubestatus "k8s.io/kubernetes/pkg/kubelet/status"
"k8s.io/kubernetes/pkg/kubelet/util/format"
"k8s.io/kubernetes/pkg/kubelet/util/queue"
"k8s.io/kubernetes/pkg/kubelet/volumemanager"
"k8s.io/kubernetes/pkg/scheduler/schedulercache"
kubeio "k8s.io/kubernetes/pkg/util/io"
"k8s.io/kubernetes/pkg/util/mount"
"k8s.io/kubernetes/pkg/volume"
"k8s.io/kubernetes/pkg/volume/configmap"
"k8s.io/kubernetes/pkg/volume/empty_dir"
"k8s.io/kubernetes/pkg/volume/host_path"
secretvolume "k8s.io/kubernetes/pkg/volume/secret"
)
const (
plegChannelCapacity = 1000
plegRelistPeriod = time.Second * 1
concurrentConsumers = 5
backOffPeriod = 10 * time.Second
// MaxContainerBackOff is the max backoff period, exported for the e2e test
MaxContainerBackOff = 300 * time.Second
enqueueDuration = 10 * time.Second
// ImageGCPeriod is the period for performing image garbage collection.
ImageGCPeriod = 5 * time.Second
// ContainerGCPeriod is the period for performing container garbage collection.
ContainerGCPeriod = 60 * time.Second
// Period for performing global cleanup tasks.
housekeepingPeriod = time.Second * 2
syncWorkQueuePeriod = time.Second * 2
minAge = 60 * time.Second
imageGcHighThreshold = "edged.image-gc-high-threshold"
syncMsgRespTimeout = 1 * time.Minute
//DefaultRootDir give default directory
DefaultRootDir = "/var/lib/edged"
workerResyncIntervalJitterFactor = 0.5
//EdgeController gives controller name
EdgeController = "controller"
//DockerContainerRuntime gives Docker container runtime name
DockerContainerRuntime = "docker"
//RemoteContainerRuntime give Remote container runtime name
RemoteContainerRuntime = "remote"
//RemoteRuntimeEndpoint gives the default endpoint for CRI runtime
RemoteRuntimeEndpoint = "/var/run/containerd/containerd.sock"
//MinimumEdgedMemoryCapacity gives the minimum default memory (2G) of edge
MinimumEdgedMemoryCapacity = 2147483647
//PodSandboxImage gives the default pause container image
PodSandboxImage = "k8s.gcr.io/pause"
)
var (
zeroDuration = metav1.Duration{}
)
// podReady holds the initPodReady flag and its lock
type podReady struct {
// initPodReady is flag to check Pod ready status
initPodReady bool
// podReadyLock is used to guard initPodReady flag
podReadyLock sync.RWMutex
}
//Define edged
type edged struct {
context *context.Context
hostname string
namespace string
nodeName string
interfaceName string
uid types.UID
nodeStatusUpdateFrequency time.Duration
registrationCompleted bool
runtime rainerruntime.Runtime
containerRuntimeName string
// container runtime
containerRuntime kubecontainer.Runtime
podCache kubecontainer.Cache
os kubecontainer.OSInterface
runtimeService internalapi.RuntimeService
podManager podmanager.Manager
pleg pleg.PodLifecycleEventGenerator
statusManager kubestatus.Manager
kubeClient clientset.Interface
probeManager prober.Manager
livenessManager proberesults.Manager
server *server.Server
podAdditionQueue *workqueue.Type
podAdditionBackoff *flowcontrol.Backoff
podDeletionQueue *workqueue.Type
podDeletionBackoff *flowcontrol.Backoff
imageGCManager images.ImageGCManager
containerGCManager kubecontainer.ContainerGC
gpuManager gpu.GPUManager
metaClient client.CoreInterface
volumePluginMgr *volume.VolumePluginMgr
mounter mount.Interface
writer kubeio.Writer
volumeManager volumemanager.VolumeManager
rootDirectory string
gpuPluginEnabled bool
version string
// podReady is structure with initPodReady flag and its lock
podReady
// cache for secret
secretStore cache.Store
configMapStore cache.Store
workQueue queue.WorkQueue
clcm clcm.ContainerLifecycleManager
}
//Config defines configuration details
type Config struct {
nodeName string
nodeNamespace string
interfaceName string
memoryCapacity int
nodeStatusUpdateInterval time.Duration
devicePluginEnabled bool
gpuPluginEnabled bool
imageGCHighThreshold int
imageGCLowThreshold int
MaxPerPodContainerCount int
DockerAddress string
version string
runtimeType string
remoteRuntimeEndpoint string
remoteImageEndpoint string
RuntimeRequestTimeout metav1.Duration
PodSandboxImage string
}
func init() {
edged, err := newEdged()
if err != nil {
log.LOGGER.Errorf("init new edged error, %v", err)
return
}
core.Register(edged)
}
func (e *edged) Name() string {
return modules.EdgedModuleName
}
func (e *edged) Group() string {
return modules.EdgedGroup
}
func (e *edged) Start(c *context.Context) {
e.context = c
e.metaClient = client.New(c)
e.statusManager = status.NewManager(e.kubeClient, e.podManager, utilpod.NewPodDeleteSafety(), e.metaClient)
if err := e.initializeModules(); err != nil {
log.LOGGER.Errorf("initialize module error: %v", err)
os.Exit(1)
}
err := e.makePodDir()
if err != nil {
log.LOGGER.Errorf("create pod dir [%s] failed: %v", e.getPodsDir(), err)
os.Exit(1)
}
switch e.containerRuntimeName {
case DockerContainerRuntime:
e.volumeManager = volumemanager.NewVolumeManager(
false,
types.NodeName(e.nodeName),
e.podManager,
e.statusManager,
e.kubeClient,
e.volumePluginMgr,
e.runtime.(*dockertools.DockerManager),
e.mounter,
e.getPodsDir(),
record.NewEventRecorder(),
false,
false,
)
case RemoteContainerRuntime:
e.volumeManager = volumemanager.NewVolumeManager(
false,
types.NodeName(e.nodeName),
e.podManager,
e.statusManager,
e.kubeClient,
e.volumePluginMgr,
e.containerRuntime,
e.mounter,
e.getPodsDir(),
record.NewEventRecorder(),
false,
false,
)
default:
log.LOGGER.Errorf("Unsupported CRI runtime: %q", e.containerRuntimeName)
return
}
go e.volumeManager.Run(edgedutil.NewSourcesReady(), utilwait.NeverStop)
go utilwait.Until(e.syncNodeStatus, e.nodeStatusUpdateFrequency, utilwait.NeverStop)
e.probeManager = prober.NewManager(e.statusManager, e.livenessManager, containers.NewContainerRunner(), kubecontainer.NewRefManager(), record.NewEventRecorder())
switch e.containerRuntimeName {
case DockerContainerRuntime:
e.pleg = edgepleg.NewGenericLifecycle(e.runtime.(*dockertools.DockerManager).ContainerManager, e.probeManager, plegChannelCapacity, plegRelistPeriod, e.podManager, e.statusManager)
case RemoteContainerRuntime:
e.pleg = edgepleg.NewGenericLifecycleRemote(e.containerRuntime, e.probeManager, plegChannelCapacity, plegRelistPeriod, e.podManager, e.statusManager, e.podCache, clock.RealClock{}, e.interfaceName)
default:
log.LOGGER.Errorf("Unsupported CRI runtime: %q", e.containerRuntimeName)
return
}
e.statusManager.Start()
e.pleg.Start()
e.podAddWorkerRun(concurrentConsumers)
e.podRemoveWorkerRun(concurrentConsumers)
housekeepingTicker := time.NewTicker(housekeepingPeriod)
syncWorkQueueCh := time.NewTicker(syncWorkQueuePeriod)
e.probeManager.Start()
go e.syncLoopIteration(e.pleg.Watch(), housekeepingTicker.C, syncWorkQueueCh.C)
go e.server.ListenAndServe()
e.imageGCManager.Start()
e.StartGarbageCollection()
e.syncPod()
}
func (e *edged) Cleanup() {
if err := recover(); err != nil {
log.LOGGER.Errorf("edged exit with error: %v", err)
}
e.context.Cleanup(e.Name())
log.LOGGER.Info("edged exit!")
}
// isInitPodReady is used to safely return initPodReady flag
func (e *edged) isInitPodReady() bool {
e.podReadyLock.RLock()
defer e.podReadyLock.RUnlock()
return e.initPodReady
}
// setInitPodReady is used to safely set initPodReady flag
func (e *edged) setInitPodReady(readyStatus bool) {
e.podReadyLock.Lock()
defer e.podReadyLock.Unlock()
e.initPodReady = readyStatus
}
func getConfig() *Config {
var conf Config
conf.nodeName = config.CONFIG.GetConfigurationByKey("edged.hostname-override").(string)
conf.nodeNamespace = config.CONFIG.GetConfigurationByKey("edged.register-node-namespace").(string)
conf.interfaceName = config.CONFIG.GetConfigurationByKey("edged.interface-name").(string)
nodeStatusUpdateInterval := config.CONFIG.GetConfigurationByKey("edged.node-status-update-frequency").(int)
conf.nodeStatusUpdateInterval = time.Duration(nodeStatusUpdateInterval) * time.Second
conf.devicePluginEnabled = config.CONFIG.GetConfigurationByKey("edged.device-plugin-enabled").(bool)
conf.gpuPluginEnabled = config.CONFIG.GetConfigurationByKey("edged.gpu-plugin-enabled").(bool)
conf.imageGCHighThreshold = config.CONFIG.GetConfigurationByKey("edged.image-gc-high-threshold").(int)
conf.imageGCLowThreshold = config.CONFIG.GetConfigurationByKey("edged.image-gc-low-threshold").(int)
conf.MaxPerPodContainerCount = config.CONFIG.GetConfigurationByKey("edged.maximum-dead-containers-per-container").(int)
conf.version = config.CONFIG.GetConfigurationByKey("edged.version").(string)
conf.DockerAddress = config.CONFIG.GetConfigurationByKey("edged.docker-address").(string)
conf.runtimeType = config.CONFIG.GetConfigurationByKey("edged.runtime-type").(string)
if conf.runtimeType == "" {
conf.runtimeType = DockerContainerRuntime
}
if conf.runtimeType == RemoteContainerRuntime {
conf.memoryCapacity = config.CONFIG.GetConfigurationByKey("edged.edged-memory-capacity-bytes").(int)
if conf.memoryCapacity == 0 {
conf.memoryCapacity = MinimumEdgedMemoryCapacity
}
conf.remoteRuntimeEndpoint = config.CONFIG.GetConfigurationByKey("edged.remote-runtime-endpoint").(string)
if conf.remoteRuntimeEndpoint == "" {
conf.remoteRuntimeEndpoint = RemoteRuntimeEndpoint
}
conf.remoteImageEndpoint = config.CONFIG.GetConfigurationByKey("edged.remote-image-endpoint").(string)
//runtimeRequestTimeout := config.CONFIG.GetConfigurationByKey("edged.runtime-request-timeout").(int)
//conf.RuntimeRequestTimeout = metav1.Duration{Duration: runtimeRequestTimeout * time.Minute}
if conf.RuntimeRequestTimeout == zeroDuration {
conf.RuntimeRequestTimeout = metav1.Duration{Duration: 2 * time.Minute}
}
conf.PodSandboxImage = config.CONFIG.GetConfigurationByKey("edged.podsandbox-image").(string)
if conf.PodSandboxImage == "" {
conf.PodSandboxImage = PodSandboxImage
}
}
return &conf
}
func getRuntimeAndImageServices(remoteRuntimeEndpoint string, remoteImageEndpoint string, runtimeRequestTimeout metav1.Duration) (internalapi.RuntimeService, internalapi.ImageManagerService, error) {
rs, err := remote.NewRemoteRuntimeService(remoteRuntimeEndpoint, runtimeRequestTimeout.Duration)
if err != nil {
return nil, nil, err
}
is, err := remote.NewRemoteImageService(remoteImageEndpoint, runtimeRequestTimeout.Duration)
if err != nil {
return nil, nil, err
}
return rs, is, err
}
//newEdged creates new edged object and initialises it
func newEdged() (*edged, error) {
var gpuManager gpu.GPUManager
conf := getConfig()
backoff := flowcontrol.NewBackOff(backOffPeriod, MaxContainerBackOff)
podManager := podmanager.NewPodManager()
policy := images.ImageGCPolicy{
HighThresholdPercent: conf.imageGCHighThreshold,
LowThresholdPercent: conf.imageGCLowThreshold,
MinAge: minAge,
}
// TODO: consider use client generate kube client
kubeClient := fakekube.NewSimpleClientset()
ed := &edged{
nodeName: conf.nodeName,
interfaceName: conf.interfaceName,
namespace: conf.nodeNamespace,
gpuPluginEnabled: conf.gpuPluginEnabled,
podManager: podManager,
podAdditionQueue: workqueue.New(),
podCache: kubecontainer.NewCache(),
podAdditionBackoff: backoff,
podDeletionQueue: workqueue.New(),
podDeletionBackoff: backoff,
kubeClient: kubeClient,
nodeStatusUpdateFrequency: conf.nodeStatusUpdateInterval,
mounter: mount.New(""),
writer: &kubeio.StdWriter{},
uid: types.UID("38796d14-1df3-11e8-8e5a-286ed488f209"),
version: conf.version,
rootDirectory: DefaultRootDir,
secretStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
configMapStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
workQueue: queue.NewBasicWorkQueue(clock.RealClock{}),
}
// Set docker address if it is set in the conf
if conf.DockerAddress != "" {
dockertools.InitDockerAddress(conf.DockerAddress)
}
if conf.gpuPluginEnabled {
gpuManager, _ = nvidia.NewNvidiaGPUManager(ed, dockertools.NewDockerConfig())
} else {
gpuManager = gpu.NewGPUManagerStub()
}
ed.gpuManager = gpuManager
ed.livenessManager = proberesults.NewManager()
// build new object to match interface
recorder := record.NewEventRecorder()
nodeRef := &v1.ObjectReference{
Kind: "Node",
Name: string(ed.nodeName),
UID: types.UID(ed.nodeName),
Namespace: "",
}
statsProvider := edgeImages.NewStatsProvider()
containerGCPolicy := kubecontainer.ContainerGCPolicy{
MinAge: minAge,
MaxContainers: -1,
MaxPerPodContainer: conf.MaxPerPodContainerCount,
}
//ed.podCache = kubecontainer.NewCache()
switch conf.runtimeType {
case DockerContainerRuntime:
runtime, err := dockertools.NewDockerManager(ed.livenessManager, 0, 0, backoff, true, conf.devicePluginEnabled, gpuManager, conf.interfaceName)
if err != nil {
return nil, fmt.Errorf("get docker manager failed, err: %s", err.Error())
}
ed.runtime = runtime
ed.containerRuntimeName = DockerContainerRuntime
ed.imageGCManager, err = images.NewImageGCManager(runtime, statsProvider, recorder, nodeRef, policy, "")
if err != nil {
return nil, fmt.Errorf("init Image GC Manager failed with error %s", err.Error())
}
ed.containerGCManager, err = kubecontainer.NewContainerGC(runtime, containerGCPolicy, &containers.KubeSourcesReady{})
if err != nil {
return nil, fmt.Errorf("init Container GC Manager failed with error %s", err.Error())
}
ed.server = server.NewServer(ed.podManager)
ed.volumePluginMgr, err = NewInitializedVolumePluginMgr(ed, ProbeVolumePlugins(""))
if err != nil {
return nil, fmt.Errorf("init VolumePluginMgr failed with error %s", err.Error())
}
case RemoteContainerRuntime:
if conf.remoteRuntimeEndpoint != "" {
// remoteImageEndpoint is same as remoteRuntimeEndpoint if not explicitly specified
if conf.remoteImageEndpoint == "" {
conf.remoteImageEndpoint = conf.remoteRuntimeEndpoint
}
}
containerRefManager := kubecontainer.NewRefManager()
httpClient := &http.Client{}
runtimeService, imageService, err := getRuntimeAndImageServices(conf.remoteRuntimeEndpoint, conf.remoteRuntimeEndpoint, conf.RuntimeRequestTimeout)
if err != nil {
return nil, err
}
if ed.os == nil {
ed.os = kubecontainer.RealOS{}
}
ed.clcm, err = clcm.NewContainerLifecycleManager(DefaultRootDir)
var machineInfo cadvisorapi.MachineInfo
machineInfo.MemoryCapacity = uint64(conf.memoryCapacity)
containerRuntime, err := kuberuntime.NewKubeGenericRuntimeManager(
recorder,
ed.livenessManager,
"",
containerRefManager,
&machineInfo,
ed,
ed.os,
ed,
httpClient,
backoff,
false,
0,
0,
false,
runtimeService,
imageService,
ed.clcm.InternalContainerLifecycle(),
nil,
)
if err != nil {
return nil, fmt.Errorf("New generic runtime manager failed, err: %s", err.Error())
}
ed.containerRuntime = containerRuntime
ed.containerRuntimeName = RemoteContainerRuntime
ed.runtimeService = runtimeService
imageGCManager, err := images.NewImageGCManager(ed.containerRuntime, statsProvider, recorder, nodeRef, policy, conf.PodSandboxImage)
if err != nil {
return nil, fmt.Errorf("failed to initialize image manager: %v", err)
}
ed.imageGCManager = imageGCManager
containerGCManager, err := kubecontainer.NewContainerGC(containerRuntime, containerGCPolicy, &containers.KubeSourcesReady{})
if err != nil {
return nil, fmt.Errorf("init Container GC Manager failed with error %s", err.Error())
}
ed.containerGCManager = containerGCManager
ed.server = server.NewServer(ed.podManager)
ed.volumePluginMgr, err = NewInitializedVolumePluginMgr(ed, ProbeVolumePlugins(""))
if err != nil {
return nil, fmt.Errorf("init VolumePluginMgr failed with error %s", err.Error())
}
default:
return nil, fmt.Errorf("unsupported runtime %q", conf.runtimeType)
}
return ed, nil
}
func (e *edged) initializeModules() error {
if err := e.gpuManager.Start(); err != nil {
log.LOGGER.Errorf("Failed to start gpuManager %v", err)
return err
}
switch e.containerRuntimeName {
case DockerContainerRuntime:
if err := e.runtime.Start(e.GetActivePods); err != nil {
log.LOGGER.Errorf("Failed to start device plugin manager %v", err)
return err
}
case RemoteContainerRuntime:
_, err := e.initialNode()
if err != nil {
// Fail kubelet and rely on the babysitter to retry starting kubelet.
glog.Fatalf("Kubelet failed to get node info: %v", err)
}
default:
return fmt.Errorf("unsupported runtime %q", e.containerRuntimeName)
}
return nil
}
func (e *edged) StartGarbageCollection() {
go utilwait.Until(func() {
err := e.imageGCManager.GarbageCollect()
if err != nil {
log.LOGGER.Errorf("Image garbage collection failed")
}
}, ImageGCPeriod, utilwait.NeverStop)
go utilwait.Until(func() {
if e.isInitPodReady() {
err := e.containerGCManager.GarbageCollect()
if err != nil {
log.LOGGER.Errorf("Container garbage collection failed: %v", err)
}
}
}, ContainerGCPeriod, utilwait.NeverStop)
}
func (e *edged) syncLoopIteration(plegCh <-chan *pleg.PodLifecycleEvent, housekeepingCh <-chan time.Time, syncWorkQueueCh <-chan time.Time) {
for {
select {
case update := <-e.livenessManager.Updates():
if update.Result == proberesults.Failure {
pod, ok := e.podManager.GetPodByUID(update.PodUID)
if !ok {
log.LOGGER.Infof("SyncLoop (container unhealthy): ignore irrelevant update: %#v", update)
break
}
log.LOGGER.Infof("SyncLoop (container unhealthy): %q", format.Pod(pod))
if pod.Spec.RestartPolicy == v1.RestartPolicyNever {
break
}
var containerCompleted bool
if pod.Spec.RestartPolicy == v1.RestartPolicyOnFailure {
for _, containerStatus := range pod.Status.ContainerStatuses {
if containerStatus.State.Terminated != nil && containerStatus.State.Terminated.ExitCode == 0 {
containerCompleted = true
break
}
}
if containerCompleted {
break
}
}
log.LOGGER.Infof("Will restart pod [%s]", pod.Name)
key := types.NamespacedName{
pod.Namespace,
pod.Name,
}
e.podAdditionQueue.Add(key.String())
}
case plegEvent := <-plegCh:
if pod, ok := e.podManager.GetPodByUID(plegEvent.ID); ok {
if plegEvent.Type == pleg.ContainerDied {
if pod.Spec.RestartPolicy == v1.RestartPolicyNever {
break
}
var containerCompleted bool
if pod.Spec.RestartPolicy == v1.RestartPolicyOnFailure {
for _, containerStatus := range pod.Status.ContainerStatuses {
if containerStatus.State.Terminated != nil && containerStatus.State.Terminated.ExitCode == 0 {
containerCompleted = true
break
}
}
if containerCompleted {
break
}
}
log.LOGGER.Errorf("sync loop get event container died, restart pod [%s]", pod.Name)
key := types.NamespacedName{
pod.Namespace,
pod.Name,
}
e.podAdditionQueue.Add(key.String())
} else {
log.LOGGER.Infof("sync loop get event [%s], ignore it now.", plegEvent.Type)
}
} else {
log.LOGGER.Infof("sync loop ignore event: [%s], with pod [%s] not found", plegEvent.Type, plegEvent.ID)
}
case <-housekeepingCh:
err := e.HandlePodCleanups()
if err != nil {
log.LOGGER.Errorf("Handle Pod Cleanup Failed: %v", err)
}
case <-syncWorkQueueCh:
podsToSync := e.getPodsToSync()
if len(podsToSync) == 0 {
break
}
for _, pod := range podsToSync {
if !e.podIsTerminated(pod) {
key := types.NamespacedName{
pod.Namespace,
pod.Name,
}
e.podAdditionQueue.Add(key.String())
}
}
}
}
}
func (e *edged) podAddWorkerRun(consumers int) {
for i := 0; i < consumers; i++ {
log.LOGGER.Infof("start pod addition queue work %d", i)
go func(i int) {
for {
item, quit := e.podAdditionQueue.Get()
if quit {
log.LOGGER.Errorf("consumer: [%d], worker addition queue is shutting down!", i)
return
}
namespacedName := types.NewNamespacedNameFromString(item.(string))
podName := namespacedName.Name
log.LOGGER.Infof("worker [%d] get pod addition item [%s]", i, podName)
backOffKey := fmt.Sprintf("pod_addition_worker_%s", podName)
if e.podAdditionBackoff.IsInBackOffSinceUpdate(backOffKey, e.podAdditionBackoff.Clock.Now()) {
log.LOGGER.Errorf("consume pod addition backoff: Back-off consume pod [%s] addition error, backoff: [%v]", podName, e.podAdditionBackoff.Get(backOffKey))
go func() {
log.LOGGER.Infof("worker [%d] backoff pod addition item [%s] failed, re-add to queue", i, podName)
time.Sleep(e.podAdditionBackoff.Get(backOffKey))
e.podAdditionQueue.Add(item)
}()
e.podAdditionQueue.Done(item)
continue
}
err := e.consumePodAddition(&namespacedName)
if err != nil {
if err == apis.ErrPodNotFound {
log.LOGGER.Infof("worker [%d] handle pod addition item [%s] failed with not found error.", podName)
e.podAdditionBackoff.Reset(backOffKey)
} else {
go func() {
log.LOGGER.Errorf("worker [%d] handle pod addition item [%s] failed: %v, re-add to queue", i, podName, err)
e.podAdditionBackoff.Next(backOffKey, e.podAdditionBackoff.Clock.Now())
time.Sleep(enqueueDuration)
e.podAdditionQueue.Add(item)
}()
}
} else {
e.podAdditionBackoff.Reset(backOffKey)
}
e.podAdditionQueue.Done(item)
}
}(i)
}
}
func (e *edged) podRemoveWorkerRun(consumers int) {
for i := 0; i < consumers; i++ {
go func(i int) {
for {
item, quit := e.podDeletionQueue.Get()
if quit {
log.LOGGER.Errorf("consumer: [%d], worker addition queue is shutting down!", i)
return
}
namespacedName := types.NewNamespacedNameFromString(item.(string))
podName := namespacedName.Name
log.LOGGER.Infof("consumer: [%d], worker get removed pod [%s]\n", i, podName)
err := e.consumePodDeletion(&namespacedName)
if err != nil {
if err == apis.ErrContainerNotFound {
log.LOGGER.Infof("pod [%s] is not exist, with container not found error", podName)
} else {
go func(item interface{}) {
log.LOGGER.Errorf("worker remove pod [%s] failed: %v", podName, err)
time.Sleep(2 * time.Second)
e.podDeletionQueue.Add(item)
}(item)
}
}
e.podDeletionQueue.Done(item)
}
}(i)
}
}
func (e *edged) consumePodAddition(namespacedName *types.NamespacedName) error {
podName := namespacedName.Name
log.LOGGER.Infof("start to consume added pod [%s]", podName)
pod, ok := e.podManager.GetPodByName(namespacedName.Namespace, podName)
if !ok || pod.DeletionTimestamp != nil {
return apis.ErrPodNotFound
}
if err := e.makePodDataDirs(pod); err != nil {
log.LOGGER.Errorf("Unable to make pod data directories for pod %q: %v", format.Pod(pod), err)
return err
}
if err := e.volumeManager.WaitForAttachAndMount(pod); err != nil {
log.LOGGER.Errorf("Unable to mount volumes for pod %q: %v; skipping pod", format.Pod(pod), err)
return err
}
secrets, err := e.getSecretsFromMetaManager(pod)
if err != nil {
return err
}
switch e.containerRuntimeName {
case DockerContainerRuntime:
err = e.runtime.EnsureImageExists(pod, secrets)
if err != nil {
return fmt.Errorf("consume added pod [%s] ensure image exist failed, %v", podName, err)
}
opt, err := e.GenerateContainerOptions(pod)
if err != nil {
return err
}
err = e.runtime.StartPod(pod, opt)
if err != nil {
return fmt.Errorf("consume added pod [%s] start pod failed, %v", podName, err)
}
case RemoteContainerRuntime:
curPodStatus, err := e.podCache.Get(pod.GetUID())
if err != nil {
log.LOGGER.Errorf("Pod status for %s from cache failed: %v", podName, err)
}
desiredPodStatus, _ := e.statusManager.GetPodStatus(pod.GetUID())
result := e.containerRuntime.SyncPod(pod, desiredPodStatus, curPodStatus, secrets, e.podAdditionBackoff)
if err := result.Error(); err != nil {
// Do not return error if the only failures were pods in backoff
for _, r := range result.SyncResults {
if r.Error != kubecontainer.ErrCrashLoopBackOff && r.Error != images.ErrImagePullBackOff {
// Do not record an event here, as we keep all event logging for sync pod failures
// local to container runtime so we get better errors
return err
}
}
return nil
}
default:
return fmt.Errorf("unsupported runtime %q", e.containerRuntimeName)
}
e.workQueue.Enqueue(pod.UID, utilwait.Jitter(time.Minute, workerResyncIntervalJitterFactor))
log.LOGGER.Infof("consume added pod [%s] successfully\n", podName)
return nil
}
func (e *edged) consumePodDeletion(namespacedName *types.NamespacedName) error {
podName := namespacedName.Name
log.LOGGER.Infof("start to consume removed pod [%s]", podName)
pod, ok := e.podManager.GetPodByName(namespacedName.Namespace, podName)
if !ok {
return apis.ErrPodNotFound
}
switch e.containerRuntimeName {
case DockerContainerRuntime:
err := e.runtime.TerminatePod(pod.UID)
if err != nil {
if err == apis.ErrContainerNotFound {
return err
}
return fmt.Errorf("consume removed pod [%s] failed, %v", podName, err)
}
case RemoteContainerRuntime:
podStatus, err := e.podCache.Get(pod.GetUID())
err = e.containerRuntime.KillPod(pod, kubecontainer.ConvertPodStatusToRunningPod(e.containerRuntimeName, podStatus), nil)
if err != nil {
if err == apis.ErrContainerNotFound {
return err
}
return fmt.Errorf("consume removed pod [%s] failed, %v", podName, err)
}
default:
return fmt.Errorf("unsupported runtime %q", e.containerRuntimeName)
}
log.LOGGER.Infof("consume removed pod [%s] successfully\n", podName)
return nil
}
func (e *edged) syncPod() {
//read containers from host
if e.containerRuntimeName == DockerContainerRuntime {
e.runtime.InitPodContainer()
}
time.Sleep(10 * time.Second)
//send msg to metamanager to get existing pods
info := model.NewMessage("").BuildRouter(e.Name(), e.Group(), e.namespace+"/"+model.ResourceTypePod,
model.QueryOperation)
e.context.Send(metamanager.MetaManagerModuleName, *info)
for {
if request, err := e.context.Receive(e.Name()); err == nil {
_, resType, resID, err := util.ParseResourceEdge(request.GetResource(), request.GetOperation())
op := request.GetOperation()
if err != nil {
log.LOGGER.Errorf("failed to parse the Resource: %v", err)
continue
}
var content []byte
switch request.Content.(type) {
case []byte:
content = request.GetContent().([]byte)
default:
content, err = json.Marshal(request.Content)
if err != nil {
log.LOGGER.Errorf("marshal message content failed: %v", err)
continue
}
}
log.LOGGER.Infof("request content is %s", request.Content)
switch resType {
case model.ResourceTypePod:
if op == model.ResponseOperation && resID == "" && request.GetSource() == metamanager.MetaManagerModuleName {
err := e.handlePodListFromMetaManager(content)
if err != nil {
log.LOGGER.Errorf("handle podList failed: %v", err)
continue
}
e.setInitPodReady(true)
} else if op == model.ResponseOperation && resID == "" && request.GetSource() == EdgeController {
err := e.handlePodListFromEdgeController(content)
if err != nil {
log.LOGGER.Errorf("handle controllerPodList failed: %v", err)
continue
}
e.setInitPodReady(true)
} else {
err := e.handlePod(op, content)
if err != nil {
log.LOGGER.Errorf("handle pod failed: %v", err)
continue
}
}
case model.ResourceTypeConfigmap:
if op != model.ResponseOperation {
err := e.handleConfigMap(op, content)
if err != nil {
log.LOGGER.Errorf("handle configMap failed: %v", err)
}
} else {
log.LOGGER.Infof("skip to handle configMap with type response")
continue
}
case model.ResourceTypeSecret:
if op != model.ResponseOperation {
err := e.handleSecret(op, content)
if err != nil {
log.LOGGER.Errorf("handle secret failed: %v", err)
}
} else {
log.LOGGER.Infof("skip to handle secret with type response")
continue
}
default:
log.LOGGER.Errorf("resType is not pod or configmap or secret: esType is %s", resType)
continue
}
} else {
log.LOGGER.Errorf("failed to get pod")
}
}
}
func (e *edged) handlePod(op string, content []byte) (err error) {
var pod v1.Pod
err = json.Unmarshal(content, &pod)
if err != nil {
return err
}
switch op {
case model.InsertOperation:
e.addPod(&pod)
case model.UpdateOperation:
e.updatePod(&pod)
case model.DeleteOperation:
if delPod, ok := e.podManager.GetPodByName(pod.Namespace, pod.Name); ok {
e.deletePod(delPod)
}
}
return nil
}
func (e *edged) handlePodListFromMetaManager(content []byte) (err error) {
var lists []string
err = json.Unmarshal([]byte(content), &lists)
if err != nil {
return err
}
for _, list := range lists {
var pod v1.Pod
err = json.Unmarshal([]byte(list), &pod)
if err != nil {
return err
}
e.addPod(&pod)
}
return nil
}
func (e *edged) handlePodListFromEdgeController(content []byte) (err error) {
var lists []v1.Pod
if err := json.Unmarshal(content, &lists); err != nil {
return err
}
for _, list := range lists {
e.addPod(&list)
}
return nil
}
func (e *edged) addPod(obj interface{}) {
pod := obj.(*v1.Pod)
log.LOGGER.Infof("start sync addition for pod [%s]", pod.Name)
attrs := &lifecycle.PodAdmitAttributes{}
attrs.Pod = pod
otherpods := e.podManager.GetPods()
attrs.OtherPods = otherpods
nodeInfo := schedulercache.NewNodeInfo(pod)
switch e.containerRuntimeName {
case DockerContainerRuntime:
e.runtime.UpdatePluginResources(nodeInfo, attrs)
case RemoteContainerRuntime:
default:
}
key := types.NamespacedName{
pod.Namespace,
pod.Name,
}
e.podManager.AddPod(pod)