-
Notifications
You must be signed in to change notification settings - Fork 149
/
k8s.go
909 lines (784 loc) · 25.6 KB
/
k8s.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
package daemon
import (
"context"
"encoding/json"
"fmt"
"net"
"os"
"strconv"
"strings"
"sync"
"time"
"unicode"
"github.com/AliyunContainerService/terway/deviceplugin"
podENITypes "github.com/AliyunContainerService/terway/pkg/apis/network.alibabacloud.com/v1beta1"
"github.com/AliyunContainerService/terway/pkg/backoff"
"github.com/AliyunContainerService/terway/pkg/generated/clientset/versioned/typed/network.alibabacloud.com/v1beta1"
"github.com/AliyunContainerService/terway/pkg/storage"
"github.com/AliyunContainerService/terway/pkg/tracing"
"github.com/AliyunContainerService/terway/pkg/utils"
"github.com/AliyunContainerService/terway/types"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"gopkg.in/yaml.v2"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/runtime"
apiTypes "k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
typedv1 "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/tools/record"
)
const (
podNetworkTypeVPCIP = "VPCIP"
podNetworkTypeVPCENI = "VPCENI"
podNetworkTypeENIMultiIP = "ENIMultiIP"
dbPath = "/var/lib/cni/terway/pod.db"
dbName = "pods"
apiServerTimeout = 70 * time.Second
apiServerReconnectThrottle = 2 * time.Minute
eventTypeNormal = corev1.EventTypeNormal
eventTypeWarning = corev1.EventTypeWarning
labelDynamicConfig = "terway-config"
)
// Kubernetes operation set
type Kubernetes interface {
GetLocalPods() ([]*types.PodInfo, error)
GetPod(namespace, name string) (*types.PodInfo, error)
GetServiceCIDR() *types.IPNetSet
GetNodeCidr() *types.IPNetSet
SetNodeAllocatablePod(count int) error
PatchEipInfo(info *types.PodInfo) error
PatchTrunkInfo(trunkEni string) error
WaitPodENIInfo(info *types.PodInfo) (podEni *podENITypes.PodENI, err error)
GetPodENIInfo(info *types.PodInfo) (podEni *podENITypes.PodENI, err error)
RecordNodeEvent(eventType, reason, message string)
RecordPodEvent(podName, podNamespace, eventType, reason, message string) error
GetNodeDynamicConfigLabel() string
GetDynamicConfigWithName(name string) (string, error)
SetSvcCidr(svcCidr *types.IPNetSet) error
SetCustomStatefulWorkloadKinds(kinds []string) error
WaitTrunkReady() (string, error)
}
type k8s struct {
client kubernetes.Interface
podEniClient v1beta1.NetworkV1beta1Interface
storage storage.Storage
broadcaster record.EventBroadcaster
recorder record.EventRecorder
mode string
nodeName string
daemonNamespace string
nodeCidr *types.IPNetSet
node *corev1.Node
svcCidr *types.IPNetSet
apiConn *connTracker
apiConnTime time.Time
statefulWorkloadKindSet sets.String
sync.Locker
}
func (k *k8s) PatchTrunkInfo(trunkEni string) error {
node, err := k.client.CoreV1().Nodes().Get(context.TODO(), k.nodeName, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil || node == nil {
k.reconnectOnTimeoutError(err)
return err
}
if node.GetAnnotations() != nil {
if eni, ok := node.GetAnnotations()[types.TrunkOn]; ok {
if eni == trunkEni {
return nil
}
}
}
node.Annotations[types.TrunkOn] = trunkEni
annotationPatchStr := fmt.Sprintf(`{"metadata":{"annotations":{"%v":"%v"}}}`, types.TrunkOn, trunkEni)
_, err = k.client.CoreV1().Nodes().Patch(context.TODO(), k.nodeName, apiTypes.MergePatchType, []byte(annotationPatchStr), metav1.PatchOptions{})
if err != nil {
k.reconnectOnTimeoutError(err)
return err
}
return nil
}
func (k *k8s) SetCustomStatefulWorkloadKinds(kinds []string) error {
k.Lock()
defer k.Unlock()
// init kubernetes built-in stateful workload kind
if len(k.statefulWorkloadKindSet) == 0 {
k.statefulWorkloadKindSet = sets.NewString("statefulset")
}
// uniform and merge all custom stateful workload kinds
for i := range kinds {
k.statefulWorkloadKindSet.Insert(strings.TrimSpace(strings.ToLower(kinds[i])))
}
return nil
}
func (k *k8s) SetSvcCidr(svcCidr *types.IPNetSet) error {
k.Lock()
defer k.Unlock()
var err error
if svcCidr.IPv4 == nil {
svcCidr.IPv4, err = serviceCidrFromAPIServer(k.client)
if err != nil {
return errors.Wrap(err, "failed getting service cidr")
}
}
k.svcCidr = svcCidr
return nil
}
func (k *k8s) PatchEipInfo(info *types.PodInfo) error {
pod, err := k.client.CoreV1().Pods(info.Namespace).Get(context.TODO(), info.Name, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil || pod == nil {
k.reconnectOnTimeoutError(err)
return err
}
if pod.GetAnnotations() != nil {
if eip, ok := pod.GetAnnotations()[podEipAddress]; ok {
if eip == info.EipInfo.PodEipIP {
return nil
}
return errors.Errorf("Pod already have eip annotation: %v", eip)
}
}
pod.Annotations[podEipAddress] = info.EipInfo.PodEipIP
annotationPatchStr := fmt.Sprintf(`{"metadata":{"annotations":{"%v":"%v"}}}`, podEipAddress, info.EipInfo.PodEipIP)
_, err = k.client.CoreV1().Pods(info.Namespace).Patch(context.TODO(), info.Name, apiTypes.MergePatchType, []byte(annotationPatchStr), metav1.PatchOptions{})
if err != nil {
k.reconnectOnTimeoutError(err)
return err
}
return nil
}
func (k *k8s) WaitPodENIInfo(info *types.PodInfo) (podEni *podENITypes.PodENI, err error) {
err = wait.ExponentialBackoff(backoff.Backoff(backoff.WaitPodENIStatus), func() (bool, error) {
podEni, err = k.podEniClient.PodENIs(info.Namespace).Get(context.TODO(), info.Name, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
if apierrors.IsNotFound(err) {
// wait pod eni exist
return false, nil
}
return false, errors.Wrapf(err, "error get pod eni info")
}
if podEni.Status.Phase != podENITypes.ENIPhaseBind {
// wait pod eni bind
return false, nil
}
if info.PodUID != "" {
if podEni.Annotations[types.PodUID] != info.PodUID {
return false, nil
}
}
if !podEni.DeletionTimestamp.IsZero() {
return false, nil
}
return true, nil
})
return podEni, err
}
func (k *k8s) GetPodENIInfo(info *types.PodInfo) (podEni *podENITypes.PodENI, err error) {
err = wait.ExponentialBackoff(backoff.Backoff(backoff.WaitPodENIStatus), func() (bool, error) {
podEni, err = k.podEniClient.PodENIs(info.Namespace).Get(context.TODO(), info.Name, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
if apierrors.IsNotFound(err) {
return true, err
}
return false, fmt.Errorf("error get pod eni info, %w", err)
}
return true, nil
})
return podEni, err
}
func (k *k8s) WaitTrunkReady() (string, error) {
id := ""
err := wait.ExponentialBackoff(backoff.Backoff(backoff.DefaultKey), func() (bool, error) {
node, err := k.client.CoreV1().Nodes().Get(context.TODO(), k.nodeName, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
return false, err
}
if node.GetAnnotations()[types.TrunkOn] != "" {
id = node.GetAnnotations()[types.TrunkOn]
return true, nil
}
return false, nil
})
return id, err
}
// newK8S return Kubernetes service by pod spec and daemon mode
func newK8S(master, kubeconfig string, daemonMode string) (Kubernetes, error) {
k8sRestConfig, err := clientcmd.BuildConfigFromFlags(master, kubeconfig)
if err != nil {
return nil, err
}
k8sRestConfig.Timeout = apiServerTimeout
t := &connTracker{
dialer: &net.Dialer{Timeout: 30 * time.Second, KeepAlive: 30 * time.Second},
conns: make(map[*closableConn]struct{}),
}
k8sRestConfig.Dial = t.DialContext
k8sRestConfig.AcceptContentTypes = strings.Join([]string{runtime.ContentTypeProtobuf, runtime.ContentTypeJSON}, ",")
k8sRestConfig.ContentType = runtime.ContentTypeProtobuf
client, err := kubernetes.NewForConfig(k8sRestConfig)
if err != nil {
return nil, err
}
nodeName, err := getNodeName(client)
if err != nil {
return nil, errors.Wrap(err, "failed getting node name")
}
daemonNamespace := os.Getenv("POD_NAMESPACE")
if len(daemonNamespace) == 0 {
daemonNamespace = "kube-system"
log.Warnf("POD_NAMESPACE is not set in environment variables, use kube-system as default namespace")
}
node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
return nil, errors.Wrap(err, "failed getting node")
}
var nodeCidr *types.IPNetSet
if daemonMode == daemonModeVPC {
// vpc mode not support ipv6
nodeCidr, err = nodeCidrFromAPIServer(client, nodeName)
if err != nil {
return nil, errors.Wrap(err, "failed getting node cidr")
}
}
storage, err := storage.NewDiskStorage(dbName, utils.NormalizePath(dbPath), serialize, deserialize)
if err != nil {
return nil, errors.Wrapf(err, "failed init db storage with path %s and bucket %s", dbPath, dbName)
}
broadcaster := record.NewBroadcaster()
source := corev1.EventSource{Component: "terway-daemon"}
recorder := broadcaster.NewRecorder(scheme.Scheme, source)
sink := &typedv1.EventSinkImpl{
Interface: typedv1.New(client.CoreV1().RESTClient()).Events(""),
}
broadcaster.StartRecordingToSink(sink)
k8sObj := &k8s{
client: client,
mode: daemonMode,
node: node,
nodeName: nodeName,
nodeCidr: nodeCidr,
daemonNamespace: daemonNamespace,
storage: storage,
apiConn: t,
broadcaster: broadcaster,
recorder: recorder,
apiConnTime: time.Now(),
Locker: &sync.RWMutex{},
}
podENICli, err := v1beta1.NewForConfig(k8sRestConfig)
if err != nil {
return nil, errors.Wrapf(err, "error init pod ENI client")
}
k8sObj.podEniClient = podENICli
go func() {
for range time.Tick(storageCleanPeriod) {
err := k8sObj.clean()
if err != nil {
log.Errorf("error cleanup k8s pod local storage, %v", err)
}
}
}()
return k8sObj, nil
}
func getNodeName(client kubernetes.Interface) (string, error) {
nodeName := os.Getenv("NODE_NAME")
if nodeName == "" {
podName := os.Getenv("POD_NAME")
podNamespace := os.Getenv("POD_NAMESPACE")
if podName == "" || podNamespace == "" {
return "", fmt.Errorf("env variables POD_NAME and POD_NAMESPACE must be set")
}
pod, err := client.CoreV1().Pods(podNamespace).Get(context.TODO(), podName, metav1.GetOptions{})
if err != nil {
return "", fmt.Errorf("error retrieving pod spec for '%s/%s': %v", podNamespace, podName, err)
}
nodeName = pod.Spec.NodeName
if nodeName == "" {
return "", fmt.Errorf("node name not present in pod spec '%s/%s'", podNamespace, podName)
}
}
return nodeName, nil
}
func nodeCidrFromAPIServer(client kubernetes.Interface, nodeName string) (*types.IPNetSet, error) {
node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{})
if err != nil {
return nil, fmt.Errorf("error retrieving node spec for '%s': %v", nodeName, err)
}
if node.Spec.PodCIDR == "" {
return nil, fmt.Errorf("node %q pod cidr not assigned", nodeName)
}
podCIDR := &types.IPNetSet{}
for _, cidr := range node.Spec.PodCIDRs {
podCIDR.SetIPNet(cidr)
}
podCIDR.SetIPNet(node.Spec.PodCIDR)
return podCIDR, nil
}
func parseCidr(cidrString string) (*net.IPNet, error) {
_, cidr, err := net.ParseCIDR(cidrString)
return cidr, err
}
func serviceCidrFromAPIServer(client kubernetes.Interface) (*net.IPNet, error) {
kubeadmConfigMap, err := client.CoreV1().ConfigMaps(k8sSystemNamespace).Get(context.TODO(), k8sKubeadmConfigmap, metav1.GetOptions{})
if err != nil {
return nil, err
}
kubeNetworkingConfig, ok := kubeadmConfigMap.Data[k8sKubeadmConfigmapNetworking]
if !ok {
kubeNetworkingConfig, ok = kubeadmConfigMap.Data[k8sKubeadmConfigmapClusterconfiguration]
if !ok {
return nil, fmt.Errorf("cannot found kubeproxy config for svc cidr")
}
}
configMap := make(map[interface{}]interface{})
err = yaml.Unmarshal([]byte(kubeNetworkingConfig), &configMap)
if err != nil {
return nil, errors.Wrapf(err, "error get networking config from configmap")
}
if networkingObj, ok := configMap["networking"]; ok {
if networkingMap, ok := networkingObj.(map[interface{}]interface{}); ok {
if svcObj, ok := networkingMap["serviceSubnet"]; ok {
if svcStr, ok := svcObj.(string); ok {
return parseCidr(svcStr)
}
}
}
}
return nil, fmt.Errorf("cannot found kubeproxy config for svc cidr")
}
const k8sSystemNamespace = "kube-system"
const k8sKubeadmConfigmap = "kubeadm-config"
const k8sKubeadmConfigmapNetworking = "MasterConfiguration"
const k8sKubeadmConfigmapClusterconfiguration = "ClusterConfiguration"
const podNeedEni = "k8s.aliyun.com/ENI"
const podIngressBandwidth = "k8s.aliyun.com/ingress-bandwidth" //deprecated
const podEgressBandwidth = "k8s.aliyun.com/egress-bandwidth" //deprecated
const podWithEip = "k8s.aliyun.com/pod-with-eip"
const eciWithEip = "k8s.aliyun.com/eci-with-eip" // to adopt ask annotation
const podEipBandwidth = "k8s.aliyun.com/eip-bandwidth"
const podEipChargeType = "k8s.aliyun.com/eip-charge-type"
const podEipInternetChargeType = "k8s.aliyun.com/eip-internet-charge-type" // to adopt ask annotation
const podEciEipInstanceID = "k8s.aliyun.com/eci-eip-instanceid" // to adopt ask annotation
const podPodEipInstanceID = "k8s.aliyun.com/pod-eip-instanceid"
const podEipAddress = "k8s.aliyun.com/allocated-eipAddress"
const eipBandwidthPackageID = "k8s.aliyun.com/eip-common-bandwidth-package-id"
const eipISP = "k8s.aliyun.com/eip-isp"
const eipPublicIPAddressPoolID = "k8s.aliyun.com/eip-public-ip-address-pool-id"
const defaultStickTimeForSts = 5 * time.Minute
var (
storageCleanTimeout = 1 * time.Hour
storageCleanPeriod = 5 * time.Minute
)
func podNetworkType(daemonMode string, pod *corev1.Pod) string {
switch daemonMode {
case daemonModeENIMultiIP:
return podNetworkTypeENIMultiIP
case daemonModeVPC:
podAnnotation := pod.GetAnnotations()
useENI := false
if needEni, ok := podAnnotation[podNeedEni]; ok && (needEni != "" && needEni != conditionFalse && needEni != "0") {
useENI = true
}
for _, c := range pod.Spec.Containers {
if _, ok := c.Resources.Requests[deviceplugin.ENIResName]; ok {
useENI = true
break
}
}
if useENI {
return podNetworkTypeVPCENI
}
return podNetworkTypeVPCIP
case daemonModeENIOnly:
return podNetworkTypeVPCENI
}
panic(fmt.Errorf("unknown daemon mode %s", daemonMode))
}
func convertPod(daemonMode string, statefulWorkloadKindSet sets.String, pod *corev1.Pod) *types.PodInfo {
pi := &types.PodInfo{
Name: pod.Name,
Namespace: pod.Namespace,
PodIPs: types.IPSet{},
PodUID: string(pod.UID),
}
pi.PodNetworkType = podNetworkType(daemonMode, pod)
for _, str := range pod.Status.PodIPs {
pi.PodIPs.SetIP(str.IP)
}
pi.PodIPs.SetIP(pod.Status.PodIP)
podAnnotation := pod.GetAnnotations()
if ingressBandwidth, ok := podAnnotation[podIngressBandwidth]; ok {
if ingress, err := parseBandwidth(ingressBandwidth); err == nil {
pi.TcIngress = ingress
} else {
_ = tracing.RecordPodEvent(pod.Name, pod.Namespace, eventTypeWarning,
"ParseFailed", fmt.Sprintf("Parse ingress bandwidth %s failed.", ingressBandwidth))
}
}
if egressBandwidth, ok := podAnnotation[podEgressBandwidth]; ok {
if egress, err := parseBandwidth(egressBandwidth); err == nil {
pi.TcEgress = egress
} else {
_ = tracing.RecordPodEvent(pod.Name, pod.Namespace, eventTypeWarning,
"ParseFailed", fmt.Sprintf("Parse egress bandwidth %s failed.", egressBandwidth))
}
}
if eipAnnotation, ok := podAnnotation[podWithEip]; ok && eipAnnotation == conditionTrue {
pi.EipInfo.PodEip = true
pi.EipInfo.PodEipBandWidth = 5
pi.EipInfo.PodEipChargeType = types.PayByTraffic
}
if eipAnnotation, ok := podAnnotation[eciWithEip]; ok && eipAnnotation == conditionTrue {
pi.EipInfo.PodEip = true
pi.EipInfo.PodEipBandWidth = 5
pi.EipInfo.PodEipChargeType = types.PayByTraffic
}
if eipAnnotation, ok := podAnnotation[podEipBandwidth]; ok {
eipBandwidth, err := strconv.Atoi(eipAnnotation)
if err != nil {
log.Errorf("error convert eip bandwidth: %v", eipBandwidth)
} else {
pi.EipInfo.PodEipBandWidth = eipBandwidth
}
}
if eipAnnotation, ok := podAnnotation[podEipChargeType]; ok {
pi.EipInfo.PodEipChargeType = types.InternetChargeType(eipAnnotation)
}
if eipAnnotation, ok := podAnnotation[podEipInternetChargeType]; ok {
pi.EipInfo.PodEipChargeType = types.InternetChargeType(eipAnnotation)
}
if eipAnnotation, ok := podAnnotation[podEciEipInstanceID]; ok && eipAnnotation != "" {
pi.EipInfo.PodEip = true
pi.EipInfo.PodEipID = eipAnnotation
}
if eipAnnotation, ok := podAnnotation[podPodEipInstanceID]; ok && eipAnnotation != "" {
pi.EipInfo.PodEip = true
pi.EipInfo.PodEipID = eipAnnotation
}
if eipAnnotation, ok := podAnnotation[eipISP]; ok && eipAnnotation != "" {
pi.EipInfo.PodEipISP = eipAnnotation
}
if eipAnnotation, ok := podAnnotation[eipBandwidthPackageID]; ok && eipAnnotation != "" {
pi.EipInfo.PodEipBandwidthPackageID = eipAnnotation
}
if eipAnnotation, ok := podAnnotation[eipPublicIPAddressPoolID]; ok && eipAnnotation != "" {
pi.EipInfo.PodEipPoolID = eipAnnotation
}
pi.SandboxExited = pod.Status.Phase == corev1.PodFailed || pod.Status.Phase == corev1.PodSucceeded
if podENI, ok := podAnnotation[types.PodENI]; ok {
var err error
pi.PodENI, err = strconv.ParseBool(podENI)
if err != nil {
_ = tracing.RecordPodEvent(pod.Name, pod.Namespace, eventTypeWarning,
"ParseFailed", fmt.Sprintf("Parse pod eni %s failed.", podENI))
}
}
if prio, ok := podAnnotation[types.NetworkPriority]; ok {
switch types.NetworkPrio(prio) {
case types.NetworkPrioBestEffort, types.NetworkPrioBurstable, types.NetworkPrioGuaranteed:
pi.NetworkPriority = prio
default:
_ = tracing.RecordPodEvent(pod.Name, pod.Namespace, eventTypeWarning,
"ParseFailed", fmt.Sprintf("Parse pod annotation %s failed.", types.NetworkPriority))
}
}
// determine whether pod's IP will stick 5 minutes for a reuse, priorities as below,
// 1. pod has a positive pod-ip-reservation annotation
// 2. pod is owned by a known stateful workload
switch {
case parseBool(pod.Annotations[types.PodIPReservation]):
pi.IPStickTime = defaultStickTimeForSts
case len(pod.OwnerReferences) > 0:
for i := range pod.OwnerReferences {
if statefulWorkloadKindSet.Has(strings.ToLower(pod.OwnerReferences[i].Kind)) {
pi.IPStickTime = defaultStickTimeForSts
break
}
}
}
return pi
}
func parseBool(s string) bool {
b, _ := strconv.ParseBool(s)
return b
}
// bandwidth limit unit
const (
BYTE = 1 << (10 * iota)
KILOBYTE
MEGABYTE
GIGABYTE
TERABYTE
)
func parseBandwidth(s string) (uint64, error) {
// when bandwidth is "", return
if len(s) == 0 {
return 0, fmt.Errorf("invalid bandwidth %s", s)
}
s = strings.TrimSpace(s)
s = strings.ToUpper(s)
i := strings.IndexFunc(s, unicode.IsLetter)
bytesString, multiple := s[:i], s[i:]
bytes, err := strconv.ParseFloat(bytesString, 64)
if err != nil || bytes <= 0 {
return 0, fmt.Errorf("invalid bandwidth %s", s)
}
switch multiple {
case "T", "TB", "TIB":
return uint64(bytes * TERABYTE), nil
case "G", "GB", "GIB":
return uint64(bytes * GIGABYTE), nil
case "M", "MB", "MIB":
return uint64(bytes * MEGABYTE), nil
case "K", "KB", "KIB":
return uint64(bytes * KILOBYTE), nil
case "B", "":
return uint64(bytes), nil
default:
return 0, fmt.Errorf("invalid bandwidth %s", s)
}
}
type storageItem struct {
Pod *types.PodInfo
deletionTime *time.Time
}
func podInfoKey(namespace, name string) string {
return fmt.Sprintf("%s/%s", namespace, name)
}
func serialize(item interface{}) ([]byte, error) {
return json.Marshal(item)
}
func deserialize(data []byte) (interface{}, error) {
item := &storageItem{}
if err := json.Unmarshal(data, item); err != nil {
return nil, err
}
return item, nil
}
func (k *k8s) GetPod(namespace, name string) (*types.PodInfo, error) {
pod, err := k.client.CoreV1().Pods(namespace).Get(context.TODO(), name, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
if apierrors.IsNotFound(err) {
key := podInfoKey(namespace, name)
obj, err := k.storage.Get(key)
if err == nil {
item := obj.(*storageItem)
return item.Pod, nil
}
if err != storage.ErrNotFound {
return nil, err
}
}
k.reconnectOnTimeoutError(err)
return nil, err
}
podInfo := convertPod(k.mode, k.statefulWorkloadKindSet, pod)
item := &storageItem{
Pod: podInfo,
}
if err := k.storage.Put(podInfoKey(podInfo.Namespace, podInfo.Name), item); err != nil {
return nil, err
}
return podInfo, nil
}
func (k *k8s) GetNodeCidr() *types.IPNetSet {
return k.nodeCidr
}
func (k *k8s) GetLocalPods() ([]*types.PodInfo, error) {
options := metav1.ListOptions{
FieldSelector: fields.OneTermEqualSelector("spec.nodeName", k.nodeName).String(),
ResourceVersion: "0",
}
list, err := k.client.CoreV1().Pods(corev1.NamespaceAll).List(context.TODO(), options)
if err != nil {
k.reconnectOnTimeoutError(err)
return nil, errors.Wrapf(err, "failed listting pods on %s from apiserver", k.nodeName)
}
var ret []*types.PodInfo
for _, pod := range list.Items {
podInfo := convertPod(k.mode, k.statefulWorkloadKindSet, &pod)
ret = append(ret, podInfo)
}
return ret, nil
}
func (k *k8s) GetServiceCIDR() *types.IPNetSet {
return k.svcCidr
}
func (k *k8s) SetNodeAllocatablePod(count int) error {
return nil
}
// clean up storage
// tag the object as deletion when found pod not exist
// the tagged object will be deleted on secondary scan
func (k *k8s) clean() error {
list, err := k.storage.List()
if err != nil {
return err
}
localPods, err := k.GetLocalPods()
if err != nil {
return errors.Wrap(err, "error get local pods")
}
podsMap := make(map[string]*types.PodInfo)
for _, pod := range localPods {
key := podInfoKey(pod.Namespace, pod.Name)
podsMap[key] = pod
}
for _, obj := range list {
item := obj.(*storageItem)
key := podInfoKey(item.Pod.Namespace, item.Pod.Name)
if _, exists := podsMap[key]; exists {
if item.deletionTime != nil {
item.deletionTime = nil
if err := k.storage.Put(key, item); err != nil {
return errors.Wrapf(err, "error save storage")
}
}
continue
}
if item.deletionTime == nil {
now := time.Now()
item.deletionTime = &now
if err := k.storage.Put(key, item); err != nil {
return errors.Wrap(err, "error save storage")
}
continue
}
if time.Since(*item.deletionTime) > storageCleanTimeout {
if err := k.storage.Delete(key); err != nil {
return errors.Wrap(err, "error delete storage")
}
}
}
return nil
}
func (k *k8s) reconnectOnTimeoutError(err error) {
if err != nil && strings.Contains(strings.ToLower(err.Error()), "timeout") {
log.Warnf("apiserver connection timeout: [%v], last establish: [%v], reconnecting...", err, k.apiConnTime)
k.Lock()
// avoid connection boom
if k.apiConnTime.Add(apiServerReconnectThrottle).Before(time.Now()) {
k.apiConn.closeAllConns()
k.apiConnTime = time.Now()
}
k.Unlock()
}
}
func (k *k8s) RecordNodeEvent(eventType, reason, message string) {
ref := &corev1.ObjectReference{
Kind: "Node",
Name: k.node.Name,
UID: k.node.UID,
Namespace: "",
}
k.recorder.Event(ref, eventType, reason, message)
}
func (k *k8s) RecordPodEvent(podName, podNamespace, eventType, reason, message string) error {
pod, err := k.client.CoreV1().Pods(podNamespace).Get(context.TODO(), podName, metav1.GetOptions{
ResourceVersion: "0",
})
if err != nil {
k.reconnectOnTimeoutError(err)
return err
}
ref := &corev1.ObjectReference{
Kind: "Pod",
Name: pod.Name,
UID: pod.UID,
Namespace: pod.Namespace,
}
k.recorder.Event(ref, eventType, reason, message)
return nil
}
// GetNodeDynamicConfigLabel returns value with label config
func (k *k8s) GetNodeDynamicConfigLabel() string {
// use node cached in newK8s()
cfgName, ok := k.node.Labels[labelDynamicConfig]
if !ok {
return ""
}
return cfgName
}
// GetDynamicConfigWithName gets the Dynamic Config's content with its ConfigMap name
func (k *k8s) GetDynamicConfigWithName(name string) (string, error) {
cfgMap, err := k.client.CoreV1().ConfigMaps(k.daemonNamespace).Get(context.TODO(), name, metav1.GetOptions{
TypeMeta: metav1.TypeMeta{},
ResourceVersion: "0",
})
if err != nil {
return "", err
}
content, ok := cfgMap.Data["eni_conf"]
if ok {
return content, nil
}
return "", errors.New("configmap not included eni_conf")
}
// connTracker is a dialer that tracks all open connections it creates.
type connTracker struct {
dialer *net.Dialer
mu sync.Mutex
conns map[*closableConn]struct{}
}
// closeAllConns forcibly closes all tracked connections.
func (c *connTracker) closeAllConns() {
c.mu.Lock()
conns := c.conns
c.conns = make(map[*closableConn]struct{})
c.mu.Unlock()
for conn := range conns {
conn.Close()
}
}
func (c *connTracker) Dial(network, address string) (net.Conn, error) {
return c.DialContext(context.Background(), network, address)
}
func (c *connTracker) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
conn, err := c.dialer.DialContext(ctx, network, address)
if err != nil {
return nil, err
}
closable := &closableConn{Conn: conn}
// Start tracking the connection
c.mu.Lock()
c.conns[closable] = struct{}{}
c.mu.Unlock()
// When the connection is closed, remove it from the map. This will
// be no-op if the connection isn't in the map, e.g. if closeAllConns()
// is called.
closable.onClose = func() {
c.mu.Lock()
delete(c.conns, closable)
c.mu.Unlock()
}
return closable, nil
}
type closableConn struct {
onClose func()
net.Conn
}
func (c *closableConn) Close() error {
go c.onClose()
return c.Conn.Close()
}