/
targetconfigcontroller.go
769 lines (675 loc) · 29.9 KB
/
targetconfigcontroller.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
package targetconfigcontroller
import (
"bytes"
"context"
"crypto/x509"
"encoding/json"
"fmt"
"reflect"
"sort"
"strings"
"time"
"github.com/ghodss/yaml"
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/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
corev1listers "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/cert"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog"
kubecontrolplanev1 "github.com/openshift/api/kubecontrolplane/v1"
openshiftcontrolplanev1 "github.com/openshift/api/openshiftcontrolplane/v1"
operatorv1 "github.com/openshift/api/operator/v1"
"github.com/openshift/cluster-kube-controller-manager-operator/pkg/operator/operatorclient"
"github.com/openshift/cluster-kube-controller-manager-operator/pkg/operator/v411_00_assets"
"github.com/openshift/cluster-kube-controller-manager-operator/pkg/version"
"github.com/openshift/library-go/pkg/crypto"
"github.com/openshift/library-go/pkg/operator/events"
"github.com/openshift/library-go/pkg/operator/resource/resourceapply"
"github.com/openshift/library-go/pkg/operator/resource/resourcemerge"
"github.com/openshift/library-go/pkg/operator/resource/resourceread"
"github.com/openshift/library-go/pkg/operator/resourcesynccontroller"
"github.com/openshift/library-go/pkg/operator/v1helpers"
)
const workQueueKey = "key"
type TargetConfigController struct {
ctx context.Context
targetImagePullSpec string
operatorImagePullSpec string
clusterPolicyControllerPullSpec string
operatorClient v1helpers.StaticPodOperatorClient
kubeClient kubernetes.Interface
configMapLister corev1listers.ConfigMapLister
secretLister corev1listers.SecretLister
eventRecorder events.Recorder
// queue only ever has one item, but it has nice error handling backoff/retry semantics
queue workqueue.RateLimitingInterface
}
func NewTargetConfigController(
ctx context.Context,
targetImagePullSpec, operatorImagePullSpec, clusterPolicyControllerPullSpec string,
kubeInformersForNamespaces v1helpers.KubeInformersForNamespaces,
operatorClient v1helpers.StaticPodOperatorClient,
kubeClient kubernetes.Interface,
eventRecorder events.Recorder,
) *TargetConfigController {
c := &TargetConfigController{
ctx: ctx,
targetImagePullSpec: targetImagePullSpec,
operatorImagePullSpec: operatorImagePullSpec,
clusterPolicyControllerPullSpec: clusterPolicyControllerPullSpec,
configMapLister: kubeInformersForNamespaces.ConfigMapLister(),
secretLister: kubeInformersForNamespaces.SecretLister(),
operatorClient: operatorClient,
kubeClient: kubeClient,
eventRecorder: eventRecorder.WithComponentSuffix("target-config-controller"),
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "TargetConfigController"),
}
// this is for our general configuration input and our status output in case another actor changes it
operatorClient.Informer().AddEventHandler(c.eventHandler())
// these are for watching our outputs in case someone changes them
kubeInformersForNamespaces.InformersFor(operatorclient.TargetNamespace).Core().V1().ConfigMaps().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.TargetNamespace).Core().V1().Secrets().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.TargetNamespace).Core().V1().ServiceAccounts().Informer().AddEventHandler(c.eventHandler())
// we only watch our output namespace
kubeInformersForNamespaces.InformersFor(operatorclient.TargetNamespace).Core().V1().Namespaces().Informer().AddEventHandler(c.namespaceEventHandler())
// for configmaps and secrets from our inputs
kubeInformersForNamespaces.InformersFor(operatorclient.GlobalUserSpecifiedConfigNamespace).Core().V1().ConfigMaps().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.GlobalUserSpecifiedConfigNamespace).Core().V1().Secrets().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.GlobalMachineSpecifiedConfigNamespace).Core().V1().ConfigMaps().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.GlobalMachineSpecifiedConfigNamespace).Core().V1().Secrets().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.OperatorNamespace).Core().V1().ConfigMaps().Informer().AddEventHandler(c.eventHandler())
kubeInformersForNamespaces.InformersFor(operatorclient.OperatorNamespace).Core().V1().Secrets().Informer().AddEventHandler(c.eventHandler())
return c
}
func (c TargetConfigController) sync() error {
operatorSpec, _, _, err := c.operatorClient.GetStaticPodOperatorStateWithQuorum()
if err != nil {
return err
}
switch operatorSpec.ManagementState {
case operatorv1.Managed:
case operatorv1.Unmanaged:
return nil
case operatorv1.Removed:
// TODO probably just fail
return nil
default:
c.eventRecorder.Warningf("ManagementStateUnknown", "Unrecognized operator management state %q", operatorSpec.ManagementState)
return nil
}
// block until config is observed and specific paths are present
if err := isRequiredConfigPresent(operatorSpec.ObservedConfig.Raw); err != nil {
c.eventRecorder.Warning("ConfigMissing", err.Error())
return err
}
requeue, err := createTargetConfigController(c.ctx, c, c.eventRecorder, operatorSpec)
if err != nil {
return err
}
if requeue {
return fmt.Errorf("synthetic requeue request")
}
return nil
}
func isRequiredConfigPresent(config []byte) error {
if len(config) == 0 {
return fmt.Errorf("no observedConfig")
}
existingConfig := map[string]interface{}{}
if err := json.NewDecoder(bytes.NewBuffer(config)).Decode(&existingConfig); err != nil {
return fmt.Errorf("error parsing config, %v", err)
}
requiredPaths := [][]string{
{"extendedArguments", "cluster-name"},
}
for _, requiredPath := range requiredPaths {
configVal, found, err := unstructured.NestedFieldNoCopy(existingConfig, requiredPath...)
if err != nil {
return fmt.Errorf("error reading %v from config, %v", strings.Join(requiredPath, "."), err)
}
if !found {
return fmt.Errorf("%v missing from config", strings.Join(requiredPath, "."))
}
if configVal == nil {
return fmt.Errorf("%v null in config", strings.Join(requiredPath, "."))
}
if configValSlice, ok := configVal.([]interface{}); ok && len(configValSlice) == 0 {
return fmt.Errorf("%v empty in config", strings.Join(requiredPath, "."))
}
if configValString, ok := configVal.(string); ok && len(configValString) == 0 {
return fmt.Errorf("%v empty in config", strings.Join(requiredPath, "."))
}
}
return nil
}
// createTargetConfigController takes care of synchronizing (not upgrading) the thing we're managing.
func createTargetConfigController(ctx context.Context, c TargetConfigController, recorder events.Recorder, operatorSpec *operatorv1.StaticPodOperatorSpec) (bool, error) {
errors := []error{}
_, _, err := manageKubeControllerManagerConfig(c.kubeClient.CoreV1(), recorder, operatorSpec)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap", err))
}
_, _, err = manageClusterPolicyControllerConfig(c.kubeClient.CoreV1(), recorder, operatorSpec)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/cluster-policy-controller-config", err))
}
_, _, err = ManageCSRIntermediateCABundle(ctx, c.secretLister, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/csr-intermediate-ca", err))
}
_, _, err = ManageCSRCABundle(c.configMapLister, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/csr-controller-ca", err))
}
_, requeueDelay, _, err := ManageCSRSigner(ctx, c.secretLister, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "secrets/csr-signer", err))
}
if requeueDelay > 0 {
c.queue.AddAfter(workQueueKey, requeueDelay)
}
_, _, err = manageServiceAccountCABundle(c.configMapLister, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/serviceaccount-ca", err))
}
err = ensureLocalhostRecoverySAToken(ctx, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "serviceaccount/localhost-recovery-client", err))
}
// Allow the addition of the service ca to token secrets to be enabled by setting an
// UnsupportedConfigOverride field named
// enableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade
// to true.
//
// This option is provided for backwards-compatibility in 4.5, and should be removed in 4.6.
addServingServiceCAToTokenSecrets := false
if len(operatorSpec.UnsupportedConfigOverrides.Raw) > 0 {
cmConfigOverride := struct {
EnableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade bool
}{}
if err := json.Unmarshal(operatorSpec.UnsupportedConfigOverrides.Raw, &cmConfigOverride); err != nil {
errors = append(errors, fmt.Errorf("failed to load EnableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade from UnsupportedConfigOverride: %v", err))
} else {
addServingServiceCAToTokenSecrets = cmConfigOverride.EnableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade
}
}
_, _, err = managePod(ctx, c.kubeClient.CoreV1(), c.kubeClient.CoreV1(), recorder, operatorSpec, c.targetImagePullSpec, c.operatorImagePullSpec, c.clusterPolicyControllerPullSpec, addServingServiceCAToTokenSecrets)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/kube-controller-manager-pod", err))
}
err = ensureKubeControllerManagerTrustedCA(ctx, c.kubeClient.CoreV1(), recorder)
if err != nil {
errors = append(errors, fmt.Errorf("%q: %v", "configmap/trusted-ca-bundle", err))
}
// The operator is not upgradeable if serving service CA addition to token secrets is enabled
// with the UnsupportedConfigOverride field
// EnableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade.
//
// This should be removed in 4.6.
var upgradeableCondition operatorv1.OperatorCondition
if addServingServiceCAToTokenSecrets {
upgradeableCondition = operatorv1.OperatorCondition{
Type: operatorv1.OperatorStatusTypeUpgradeable,
Status: operatorv1.ConditionFalse,
Reason: "AddServingServiceCAToTokenSecretsEnabled",
Message: "Disable the addition of the serving service ca to token secrets by removing EnableDeprecatedAndRemovedServiceCAKeyUntilNextRelease_ThisMakesClusterImpossibleToUpgrade from the operator's UnsupportedConfigOverrdies",
}
} else {
upgradeableCondition = operatorv1.OperatorCondition{
Type: operatorv1.OperatorStatusTypeUpgradeable,
Status: operatorv1.ConditionTrue,
}
}
if _, _, err := v1helpers.UpdateStaticPodStatus(c.operatorClient, v1helpers.UpdateStaticPodConditionFn(upgradeableCondition)); err != nil {
return true, err
}
if len(errors) > 0 {
condition := operatorv1.OperatorCondition{
Type: "TargetConfigControllerDegraded",
Status: operatorv1.ConditionTrue,
Reason: "SynchronizationError",
Message: v1helpers.NewMultiLineAggregate(errors).Error(),
}
if _, _, err := v1helpers.UpdateStaticPodStatus(c.operatorClient, v1helpers.UpdateStaticPodConditionFn(condition)); err != nil {
return true, err
}
return true, nil
}
condition := operatorv1.OperatorCondition{
Type: "TargetConfigControllerDegraded",
Status: operatorv1.ConditionFalse,
}
if _, _, err := v1helpers.UpdateStaticPodStatus(c.operatorClient, v1helpers.UpdateStaticPodConditionFn(condition)); err != nil {
return true, err
}
return false, nil
}
func manageKubeControllerManagerConfig(client corev1client.ConfigMapsGetter, recorder events.Recorder, operatorSpec *operatorv1.StaticPodOperatorSpec) (*corev1.ConfigMap, bool, error) {
configMap := resourceread.ReadConfigMapV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/cm.yaml"))
defaultConfig := v411_00_assets.MustAsset("v4.1.0/config/defaultconfig.yaml")
requiredConfigMap, _, err := resourcemerge.MergePrunedConfigMap(
&kubecontrolplanev1.KubeControllerManagerConfig{},
configMap,
"config.yaml",
nil,
defaultConfig,
operatorSpec.ObservedConfig.Raw,
operatorSpec.UnsupportedConfigOverrides.Raw)
if err != nil {
return nil, false, err
}
return resourceapply.ApplyConfigMap(client, recorder, requiredConfigMap)
}
func manageClusterPolicyControllerConfig(client corev1client.ConfigMapsGetter, recorder events.Recorder, operatorSpec *operatorv1.StaticPodOperatorSpec) (*corev1.ConfigMap, bool, error) {
configMap := resourceread.ReadConfigMapV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/cluster-policy-controller-cm.yaml"))
defaultConfig := v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/default-cluster-policy-controller-config.yaml")
requiredConfigMap, _, err := resourcemerge.MergePrunedConfigMap(
&openshiftcontrolplanev1.OpenShiftControllerManagerConfig{},
configMap,
"config.yaml",
nil,
defaultConfig,
operatorSpec.ObservedConfig.Raw,
operatorSpec.UnsupportedConfigOverrides.Raw)
if err != nil {
return nil, false, err
}
return resourceapply.ApplyConfigMap(client, recorder, requiredConfigMap)
}
func ensureLocalhostRecoverySAToken(ctx context.Context, client corev1client.CoreV1Interface, recorder events.Recorder) error {
requiredSA := resourceread.ReadServiceAccountV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/localhost-recovery-sa.yaml"))
requiredToken := resourceread.ReadSecretV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/localhost-recovery-token.yaml"))
saClient := client.ServiceAccounts(operatorclient.TargetNamespace)
serviceAccount, err := saClient.Get(ctx, requiredSA.Name, metav1.GetOptions{})
if err != nil {
return err
}
// The default token secrets get random names so we have created a custom secret
// to be populated with SA token so we have a stable name.
secretsClient := client.Secrets(operatorclient.TargetNamespace)
token, err := secretsClient.Get(ctx, requiredToken.Name, metav1.GetOptions{})
if err != nil {
return err
}
// Token creation / injection for a SA is asynchronous.
// We will report and error if it's missing, go degraded and get re-queued when the SA token is updated.
uid := token.Annotations[corev1.ServiceAccountUIDKey]
if len(uid) == 0 {
return fmt.Errorf("secret %s/%s hasn't been populated with SA token yet: missing SA UID", token.Namespace, token.Name)
}
if uid != string(serviceAccount.UID) {
return fmt.Errorf("secret %s/%s hasn't been populated with current SA token yet: SA UID mismatch", token.Namespace, token.Name)
}
if len(token.Data) == 0 {
return fmt.Errorf("secret %s/%s hasn't been populated with any data yet", token.Namespace, token.Name)
}
// Explicitly check that the fields we use are there, so we find out easily if some are removed or renamed.
_, ok := token.Data["token"]
if !ok {
return fmt.Errorf("secret %s/%s hasn't been populated with current SA token yet", token.Namespace, token.Name)
}
_, ok = token.Data["ca.crt"]
if !ok {
return fmt.Errorf("secret %s/%s hasn't been populated with current SA token root CA yet", token.Namespace, token.Name)
}
return err
}
func managePod(ctx context.Context, configMapsGetter corev1client.ConfigMapsGetter, secretsGetter corev1client.SecretsGetter, recorder events.Recorder, operatorSpec *operatorv1.StaticPodOperatorSpec, imagePullSpec, operatorImagePullSpec, clusterPolicyControllerPullSpec string, addServingServiceCAToTokenSecrets bool) (*corev1.ConfigMap, bool, error) {
required := resourceread.ReadPodV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/pod.yaml"))
// TODO: If the image pull spec is not specified, the "${IMAGE}" will be used as value and the pod will fail to start.
images := map[string]string{
"${IMAGE}": imagePullSpec,
"${OPERATOR_IMAGE}": operatorImagePullSpec,
"${CLUSTER_POLICY_CONTROLLER_IMAGE}": clusterPolicyControllerPullSpec,
}
if len(imagePullSpec) > 0 {
for i := range required.Spec.Containers {
for pat, img := range images {
if required.Spec.Containers[i].Image == pat {
required.Spec.Containers[i].Image = img
break
}
}
}
for i := range required.Spec.InitContainers {
for pat, img := range images {
if required.Spec.InitContainers[i].Image == pat {
required.Spec.InitContainers[i].Image = img
break
}
}
}
}
containerArgsWithLoglevel := required.Spec.Containers[0].Args
if argsCount := len(containerArgsWithLoglevel); argsCount > 1 {
return nil, false, fmt.Errorf("expected only one container argument, got %d", argsCount)
}
if !strings.Contains(containerArgsWithLoglevel[0], "exec hyperkube kube-controller-manager") {
return nil, false, fmt.Errorf("exec hyperkube kube-controller-manager not found in first argument %q", containerArgsWithLoglevel[0])
}
containerArgsWithLoglevel[0] = strings.TrimSpace(containerArgsWithLoglevel[0])
switch operatorSpec.LogLevel {
case operatorv1.Normal:
containerArgsWithLoglevel[0] += fmt.Sprintf(" -v=%d", 2)
case operatorv1.Debug:
containerArgsWithLoglevel[0] += fmt.Sprintf(" -v=%d", 4)
case operatorv1.Trace:
containerArgsWithLoglevel[0] += fmt.Sprintf(" -v=%d", 6)
case operatorv1.TraceAll:
containerArgsWithLoglevel[0] += fmt.Sprintf(" -v=%d", 8)
default:
containerArgsWithLoglevel[0] += fmt.Sprintf(" -v=%d", 2)
}
if _, err := secretsGetter.Secrets(required.Namespace).Get(ctx, "serving-cert", metav1.GetOptions{}); err != nil && !apierrors.IsNotFound(err) {
return nil, false, err
} else if err == nil {
containerArgsWithLoglevel[0] += " --tls-cert-file=/etc/kubernetes/static-pod-resources/secrets/serving-cert/tls.crt"
containerArgsWithLoglevel[0] += " --tls-private-key-file=/etc/kubernetes/static-pod-resources/secrets/serving-cert/tls.key"
}
containerArgsWithLoglevel[0] = strings.TrimSpace(containerArgsWithLoglevel[0])
var observedConfig map[string]interface{}
if err := yaml.Unmarshal(operatorSpec.ObservedConfig.Raw, &observedConfig); err != nil {
return nil, false, fmt.Errorf("failed to unmarshal the observedConfig: %v", err)
}
proxyConfig, _, err := unstructured.NestedStringMap(observedConfig, "targetconfigcontroller", "proxy")
if err != nil {
return nil, false, fmt.Errorf("couldn't get the proxy config from observedConfig: %v", err)
}
proxyEnvVars := proxyMapToEnvVars(proxyConfig)
for i, container := range required.Spec.Containers {
required.Spec.Containers[i].Env = append(container.Env, proxyEnvVars...)
}
if addServingServiceCAToTokenSecrets {
// Ensure the addition of serving service ca to token secrets by setting the environment
// variable that will enable the behavior in the controller manager.
for _, container := range required.Spec.Containers {
if container.Name == "kube-controller-manager" {
container.Env = append(container.Env, corev1.EnvVar{
Name: "ADD_SERVICE_SERVING_CA_TO_TOKEN_SECRETS",
Value: "true",
})
break
}
}
}
configMap := resourceread.ReadConfigMapV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/pod-cm.yaml"))
configMap.Data["pod.yaml"] = resourceread.WritePodV1OrDie(required)
configMap.Data["forceRedeploymentReason"] = operatorSpec.ForceRedeploymentReason
configMap.Data["version"] = version.Get().String()
return resourceapply.ApplyConfigMap(configMapsGetter, recorder, configMap)
}
func manageServiceAccountCABundle(lister corev1listers.ConfigMapLister, client corev1client.ConfigMapsGetter, recorder events.Recorder) (*corev1.ConfigMap, bool, error) {
requiredConfigMap, err := resourcesynccontroller.CombineCABundleConfigMaps(
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.TargetNamespace, Name: "serviceaccount-ca"},
lister,
// include the ca bundle needed to recognize the server
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.GlobalMachineSpecifiedConfigNamespace, Name: "kube-apiserver-server-ca"},
// include the ca bundle needed to recognize default
// certificates generated by cluster-ingress-operator
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.GlobalMachineSpecifiedConfigNamespace, Name: "default-ingress-cert"},
)
if err != nil {
return nil, false, err
}
return resourceapply.ApplyConfigMap(client, recorder, requiredConfigMap)
}
func ManageCSRCABundle(lister corev1listers.ConfigMapLister, client corev1client.ConfigMapsGetter, recorder events.Recorder) (*corev1.ConfigMap, bool, error) {
requiredConfigMap, err := resourcesynccontroller.CombineCABundleConfigMaps(
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.OperatorNamespace, Name: "csr-controller-ca"},
lister,
// include the CA we use to sign CSRs
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.OperatorNamespace, Name: "csr-signer-ca"},
// include the CA we use to sign the cert key pairs from from csr-signer
resourcesynccontroller.ResourceLocation{Namespace: operatorclient.OperatorNamespace, Name: "csr-controller-signer-ca"},
)
if err != nil {
return nil, false, err
}
return resourceapply.ApplyConfigMap(client, recorder, requiredConfigMap)
}
func ManageCSRSigner(ctx context.Context, lister corev1listers.SecretLister, client corev1client.SecretsGetter, recorder events.Recorder) (*corev1.Secret, time.Duration, bool, error) {
// get the certkey pair we will sign with. We're going to add the cert to a ca bundle so we can recognize the chain it signs back to the signer
csrSigner, err := lister.Secrets(operatorclient.OperatorNamespace).Get("csr-signer")
if apierrors.IsNotFound(err) {
return nil, 0, false, nil
}
if err != nil {
return nil, 0, false, err
}
// the CSR signing controller only accepts a single cert. make sure we only ever have one (not multiple to construct a larger chain)
certBytes, signingKey, useAfter, _, err := extractSigner(csrSigner)
if certBytes == nil || signingKey == nil || err != nil {
return nil, 0, false, err
}
// make sure we wait five minutes to propagate the change to other components, like kas for trust
useAfter = useAfter.Add(5 * time.Minute)
now := time.Now()
oldSigner, err := client.Secrets(operatorclient.TargetNamespace).Get(ctx, "csr-signer", metav1.GetOptions{})
_, _, _, oldUseBefore, _ := extractSigner(oldSigner)
switch {
case apierrors.IsNotFound(err):
// apply the secret
case oldUseBefore.Before(now):
// apply the secret
case now.After(useAfter):
// apply the secret
default:
// wait a little while longer until after the useAfter
return nil, useAfter.Sub(now) + 10*time.Second, false, nil
}
csrSigner = &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{Namespace: operatorclient.TargetNamespace, Name: "csr-signer"},
Data: map[string][]byte{
"tls.crt": certBytes,
"tls.key": signingKey,
},
Type: corev1.SecretTypeTLS,
}
secret, modified, err := resourceapply.ApplySecret(client, recorder, csrSigner)
return secret, 0, modified, err
}
func extractSigner(csrSigner *corev1.Secret) ([]byte, []byte, time.Time, time.Time, error) {
useAfter := time.Unix(0, 0)
useBefore := time.Unix(0, 0)
if csrSigner == nil {
return nil, nil, useAfter, useBefore, nil
}
signingCert := csrSigner.Data["tls.crt"]
if len(signingCert) == 0 {
return nil, nil, useAfter, useBefore, nil
}
signingKey := csrSigner.Data["tls.key"]
if len(signingKey) == 0 {
return nil, nil, useAfter, useBefore, nil
}
signingCertKeyPair, err := crypto.GetCAFromBytes(signingCert, signingKey)
if err != nil {
return nil, nil, useAfter, useBefore, err
}
certBytes, err := crypto.EncodeCertificates(signingCertKeyPair.Config.Certs[0])
if err != nil {
return nil, nil, useAfter, useBefore, err
}
useAfter = signingCertKeyPair.Config.Certs[0].NotBefore
useBefore = signingCertKeyPair.Config.Certs[0].NotAfter
return certBytes, signingKey, useAfter, useBefore, nil
}
func ManageCSRIntermediateCABundle(ctx context.Context, lister corev1listers.SecretLister, client corev1client.ConfigMapsGetter, recorder events.Recorder) (*corev1.ConfigMap, bool, error) {
// get the certkey pair we will sign with. We're going to add the cert to a ca bundle so we can recognize the chain it signs back to the signer
csrSigner, err := lister.Secrets(operatorclient.OperatorNamespace).Get("csr-signer")
if apierrors.IsNotFound(err) {
return nil, false, nil
}
if err != nil {
return nil, false, err
}
signingCert := csrSigner.Data["tls.crt"]
if len(signingCert) == 0 {
return nil, false, nil
}
signingKey := csrSigner.Data["tls.key"]
if len(signingCert) == 0 {
return nil, false, nil
}
signingCertKeyPair, err := crypto.GetCAFromBytes(signingCert, signingKey)
if err != nil {
return nil, false, err
}
csrSignerCA, err := client.ConfigMaps(operatorclient.OperatorNamespace).Get(ctx, "csr-signer-ca", metav1.GetOptions{})
if apierrors.IsNotFound(err) {
csrSignerCA = &corev1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{Namespace: operatorclient.OperatorNamespace, Name: "csr-signer-ca"},
Data: map[string]string{},
}
} else if err != nil {
return nil, false, err
}
certificates := []*x509.Certificate{}
caBundle := csrSignerCA.Data["ca-bundle.crt"]
if len(caBundle) > 0 {
var err error
certificates, err = cert.ParseCertsPEM([]byte(caBundle))
if err != nil {
return nil, false, err
}
}
certificates = append(certificates, signingCertKeyPair.Config.Certs...)
certificates = crypto.FilterExpiredCerts(certificates...)
finalCertificates := []*x509.Certificate{}
// now check for duplicates. n^2, but super simple
for i := range certificates {
found := false
for j := range finalCertificates {
if reflect.DeepEqual(certificates[i].Raw, finalCertificates[j].Raw) {
found = true
break
}
}
if !found {
finalCertificates = append(finalCertificates, certificates[i])
}
}
caBytes, err := crypto.EncodeCertificates(finalCertificates...)
if err != nil {
return nil, false, err
}
csrSignerCA.Data["ca-bundle.crt"] = string(caBytes)
return resourceapply.ApplyConfigMap(client, recorder, csrSignerCA)
}
func ensureKubeControllerManagerTrustedCA(ctx context.Context, client corev1client.CoreV1Interface, recorder events.Recorder) error {
required := resourceread.ReadConfigMapV1OrDie(v411_00_assets.MustAsset("v4.1.0/kube-controller-manager/trusted-ca-cm.yaml"))
cmCLient := client.ConfigMaps(operatorclient.TargetNamespace)
cm, err := cmCLient.Get(ctx, "trusted-ca-bundle", metav1.GetOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
_, err = cmCLient.Create(ctx, required, metav1.CreateOptions{})
}
return err
}
// update if modified by the user
if val, ok := cm.Labels["config.openshift.io/inject-trusted-cabundle"]; !ok || val != "true" {
cm.Labels["config.openshift.io/inject-trusted-cabundle"] = "true"
_, err = cmCLient.Update(ctx, cm, metav1.UpdateOptions{})
return err
}
return err
}
// Run starts the kube-controller-manager and blocks until stopCh is closed.
func (c *TargetConfigController) Run(workers int, stopCh <-chan struct{}) {
defer runtime.HandleCrash()
defer c.queue.ShutDown()
klog.Infof("Starting TargetConfigController")
defer klog.Infof("Shutting down TargetConfigController")
// doesn't matter what workers say, only start one.
go wait.Until(c.runWorker, time.Second, stopCh)
<-stopCh
}
func (c *TargetConfigController) runWorker() {
for c.processNextWorkItem() {
}
}
func (c *TargetConfigController) processNextWorkItem() bool {
dsKey, quit := c.queue.Get()
if quit {
return false
}
defer c.queue.Done(dsKey)
err := c.sync()
if err == nil {
c.queue.Forget(dsKey)
return true
}
runtime.HandleError(fmt.Errorf("%v failed with : %v", dsKey, err))
c.queue.AddRateLimited(dsKey)
return true
}
// eventHandler queues the operator to check spec and status
func (c *TargetConfigController) eventHandler() cache.ResourceEventHandler {
return cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
UpdateFunc: func(old, new interface{}) { c.queue.Add(workQueueKey) },
DeleteFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
}
}
// this set of namespaces will include things like logging and metrics which are used to drive
var interestingNamespaces = sets.NewString(operatorclient.TargetNamespace)
func (c *TargetConfigController) namespaceEventHandler() cache.ResourceEventHandler {
return cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
ns, ok := obj.(*corev1.Namespace)
if !ok {
c.queue.Add(workQueueKey)
}
if ns.Name == operatorclient.TargetNamespace {
c.queue.Add(workQueueKey)
}
},
UpdateFunc: func(old, new interface{}) {
ns, ok := old.(*corev1.Namespace)
if !ok {
c.queue.Add(workQueueKey)
}
if ns.Name == operatorclient.TargetNamespace {
c.queue.Add(workQueueKey)
}
},
DeleteFunc: func(obj interface{}) {
ns, ok := obj.(*corev1.Namespace)
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
runtime.HandleError(fmt.Errorf("couldn't get object from tombstone %#v", obj))
return
}
ns, ok = tombstone.Obj.(*corev1.Namespace)
if !ok {
runtime.HandleError(fmt.Errorf("tombstone contained object that is not a Namespace %#v", obj))
return
}
}
if ns.Name == operatorclient.TargetNamespace {
c.queue.Add(workQueueKey)
}
},
}
}
func proxyMapToEnvVars(proxyConfig map[string]string) []corev1.EnvVar {
if proxyConfig == nil {
return nil
}
envVars := []corev1.EnvVar{}
for k, v := range proxyConfig {
envVars = append(envVars, corev1.EnvVar{Name: k, Value: v})
}
// need to sort the slice so that kube-controller-manager-pod configmap does not change all the time
sort.Slice(envVars, func(i, j int) bool { return envVars[i].Name < envVars[j].Name })
return envVars
}