-
Notifications
You must be signed in to change notification settings - Fork 85
/
Copy pathprovider-kubeconfig.py
906 lines (781 loc) · 40.9 KB
/
provider-kubeconfig.py
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
import sys
import json
import subprocess
import sys
import os
import yaml
import time
import argparse
from logging.config import dictConfig
dictConfig({
'version': 1,
'formatters': {'default': {
'format': '[%(asctime)s] %(levelname)s in %(module)s: %(message)s',
}},
'handlers': {
'file.handler': {
'class': 'logging.handlers.RotatingFileHandler',
'filename': 'provider-kubeconfig.log',
'maxBytes': 10000000,
'backupCount': 5,
'level': 'DEBUG',
},
},
'root': {
'level': 'INFO',
'handlers': ['file.handler']
}
})
def create_role_rolebinding(contents, name, kubeconfig):
filePath = os.getcwd() + "/" + name
fp = open(filePath, "w")
#json_content = json.dumps(contents)
#fp.write(json_content)
yaml_content = yaml.dump(contents)
fp.write(yaml_content)
fp.close()
#print("---")
#print(yaml_content)
#print("---")
cmd = " kubectl apply -f " + filePath + kubeconfig
run_command(cmd)
def run_command(cmd):
#print("Inside run_command")
#print(cmd)
cmdOut = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()
out = cmdOut[0].decode('utf-8')
err = cmdOut[1].decode('utf-8')
#print(out)
#print("---")
#print(err)
return out, err
class KubeconfigGenerator(object):
def run_command(self, cmd):
#print("Inside run_command")
#print(cmd)
cmdOut = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()
out = cmdOut[0]
err = cmdOut[1]
#print(out)
#print("---")
#print(err)
return out, err
def _create_kubecfg_file(self, sa, namespace, filename, token, ca, server, kubeconfig, cluster_name=None):
#print("Creating kubecfg file")
top_level_dict = {}
top_level_dict["apiVersion"] = "v1"
top_level_dict["kind"] = "Config"
contextName = cluster_name if cluster_name else sa
usersList = []
usertoken = {}
usertoken["token"] = token
userInfo = {}
userInfo["name"] = sa
userInfo["user"] = usertoken
usersList.append(userInfo)
top_level_dict["users"] = usersList
clustersList = []
cluster_details = {}
cluster_details["server"] = server
# TODO: Use the certificate authority to perform tls
# cluster_details["certificate-authority-data"] = ca
cluster_details["insecure-skip-tls-verify"] = True
clusterInfo = {}
clusterInfo["cluster"] = cluster_details
clusterInfo["name"] = cluster_name if cluster_name else sa
clustersList.append(clusterInfo)
top_level_dict["clusters"] = clustersList
context_details = {}
context_details["cluster"] = cluster_name if cluster_name else sa
context_details["user"] = sa
context_details["namespace"] = namespace
contextInfo = {}
contextInfo["context"] = context_details
contextInfo["name"] = contextName
contextList = []
contextList.append(contextInfo)
top_level_dict["contexts"] = contextList
top_level_dict["current-context"] = contextName
json_file = json.dumps(top_level_dict)
#print("kubecfg file:" + json_file)
fp = open(os.getcwd() + "/" + filename, "w")
fp.write(json_file)
fp.close()
configmapName = sa
created = False
while not created:
cmd = "kubectl create configmap " + configmapName + " -n " + namespace + " --from-file=" + os.getcwd() + "/" + filename + kubeconfig
self.run_command(cmd)
get_cmd = "kubectl get configmap " + configmapName + " -n " + namespace + kubeconfig
output, err = self.run_command(get_cmd)
output = output.decode('utf-8')
if 'Error from server (NotFound)' in output:
time.sleep(2)
print("Trying again..")
else:
created = True
def _apply_consumer_rbac(self, sa, namespace, kubeconfig):
role = {}
role["apiVersion"] = "rbac.authorization.k8s.io/v1"
role["kind"] = "ClusterRole"
metadata = {}
metadata["name"] = sa
metadata["namespace"] = namespace
role["metadata"] = metadata
# all resources
all_resources = []
# Read all resources
ruleGroup1 = {}
apiGroup1 = ["*",""]
resourceGroup1 = ["*"]
verbsGroup1 = ["get","watch","list"]
ruleGroup1["apiGroups"] = apiGroup1
ruleGroup1["resources"] = resourceGroup1
ruleGroup1["verbs"] = verbsGroup1
all_resources.extend(resourceGroup1)
ruleGroup8 = {}
apiGroup8 = ["apps"]
resourceGroup8 = ["deployments","daemonsets","deployments/rollback","deployments/scale","replicasets","replicasets/scale","statefulsets","statefulsets/scale"]
verbsGroup8 = ["get","watch","list","create","delete","update","patch","deletecollection"]
ruleGroup8["apiGroups"] = apiGroup8
ruleGroup8["resources"] = resourceGroup8
ruleGroup8["verbs"] = verbsGroup8
all_resources.extend(resourceGroup8)
# Impersonate users, groups, serviceaccounts
ruleGroup9 = {}
apiGroup9 = [""]
resourceGroup9 = ["users","groups","serviceaccounts"]
verbsGroup9 = ["impersonate"]
ruleGroup9["apiGroups"] = apiGroup9
ruleGroup9["resources"] = resourceGroup9
ruleGroup9["verbs"] = verbsGroup9
all_resources.extend(resourceGroup9)
# Pod/portforward to open consumerui
ruleGroup10 = {}
apiGroup10 = [""]
resourceGroup10 = ["pods/portforward"]
verbsGroup10 = ["create","get"]
ruleGroup10["apiGroups"] = apiGroup10
ruleGroup10["resources"] = resourceGroup10
ruleGroup10["verbs"] = verbsGroup10
all_resources.extend(resourceGroup10)
ruleList = []
ruleList.append(ruleGroup1)
ruleList.append(ruleGroup9)
ruleList.append(ruleGroup10)
ruleList.append(ruleGroup8)
role["rules"] = ruleList
roleName = sa + "-role-impersonate.yaml"
create_role_rolebinding(role, roleName, kubeconfig)
roleBinding = {}
roleBinding["apiVersion"] = "rbac.authorization.k8s.io/v1"
roleBinding["kind"] = "ClusterRoleBinding"
metadata = {}
metadata["name"] = sa
metadata["namespace"] = namespace
roleBinding["metadata"] = metadata
subject = {}
subject["kind"] = "ServiceAccount"
subject["name"] = sa
subject["apiGroup"] = ""
subject["namespace"] = namespace
subjectList = []
subjectList.append(subject)
roleBinding["subjects"] = subjectList
roleRef = {}
roleRef["kind"] = "ClusterRole"
roleRef["name"] = sa
roleRef["apiGroup"] = "rbac.authorization.k8s.io"
roleBinding["roleRef"] = roleRef
roleBindingName = sa + "-rolebinding-impersonate.yaml"
create_role_rolebinding(roleBinding, roleBindingName, kubeconfig)
# create configmap to store all resources
cfg_map_filename = sa + "-perms.txt"
fp = open(cfg_map_filename, "w")
all_resources.sort()
all_resources_uniq = []
[all_resources_uniq.append(x) for x in all_resources if x not in all_resources_uniq]
fp.write(str(all_resources_uniq))
fp.close()
cfg_map_name = sa + "-perms"
cmd = "kubectl create configmap " + cfg_map_name + " -n " + namespace + " --from-file=" + cfg_map_filename
self.run_command(cmd)
def _apply_provider_rbac(self, sa, namespace, kubeconfig):
role = {}
role["apiVersion"] = "rbac.authorization.k8s.io/v1"
role["kind"] = "ClusterRole"
metadata = {}
metadata["name"] = sa
metadata["namespace"] = namespace
role["metadata"] = metadata
# all resources
all_resources = []
# Read all resources
ruleGroup1 = {}
apiGroup1 = ["*",""]
resourceGroup1 = ["*"]
verbsGroup1 = ["get","watch","list"]
ruleGroup1["apiGroups"] = apiGroup1
ruleGroup1["resources"] = resourceGroup1
ruleGroup1["verbs"] = verbsGroup1
# CRUD on resourcecompositions et. al.
ruleGroup2 = {}
apiGroup2 = ["workflows.kubeplus"]
resourceGroup2 = ["resourcecompositions","resourcemonitors","resourcepolicies","resourceevents"]
verbsGroup2 = ["get","watch","list","create","delete","update","patch"]
ruleGroup2["apiGroups"] = apiGroup2
ruleGroup2["resources"] = resourceGroup2
ruleGroup2["verbs"] = verbsGroup2
all_resources.extend(resourceGroup2)
# CRUD on clusterroles and clusterrolebindings
ruleGroup3 = {}
apiGroup3 = ["rbac.authorization.k8s.io"]
resourceGroup3 = ["clusterroles","clusterrolebindings","roles","rolebindings"]
verbsGroup3 = ["get","watch","list","create","delete","update","patch","deletecollection"]
ruleGroup3["apiGroups"] = apiGroup3
ruleGroup3["resources"] = resourceGroup3
ruleGroup3["verbs"] = verbsGroup3
all_resources.extend(resourceGroup3)
# CRUD on Port forward
ruleGroup4 = {}
apiGroup4 = [""]
resourceGroup4 = ["pods/portforward"]
verbsGroup4 = ["get","watch","list","create","delete","update","patch"]
ruleGroup4["apiGroups"] = apiGroup4
ruleGroup4["resources"] = resourceGroup4
ruleGroup4["verbs"] = verbsGroup4
all_resources.extend(resourceGroup4)
# CRUD on platformapi.kubeplus
ruleGroup5 = {}
apiGroup5 = ["platformapi.kubeplus"]
resourceGroup5 = ["*"]
verbsGroup5 = ["get","watch","list","create","delete","update","patch"]
ruleGroup5["apiGroups"] = apiGroup5
ruleGroup5["resources"] = resourceGroup5
ruleGroup5["verbs"] = verbsGroup5
# CRUD on secrets, serviceaccounts, configmaps
ruleGroup6 = {}
apiGroup6 = [""]
resourceGroup6 = ["secrets", "serviceaccounts", "configmaps","events","persistentvolumeclaims","serviceaccounts/token","services","services/proxy","endpoints"]
verbsGroup6 = ["get","watch","list","create","delete","update","patch", "deletecollection"]
ruleGroup6["apiGroups"] = apiGroup6
ruleGroup6["resources"] = resourceGroup6
ruleGroup6["verbs"] = verbsGroup6
all_resources.extend(resourceGroup6)
# CRUD on namespaces
ruleGroup7 = {}
apiGroup7 = [""]
resourceGroup7 = ["namespaces"]
verbsGroup7 = ["get","watch","list","create","delete","update","patch"]
ruleGroup7["apiGroups"] = apiGroup7
ruleGroup7["resources"] = resourceGroup7
ruleGroup7["verbs"] = verbsGroup7
all_resources.extend(resourceGroup7)
# CRUD on Deployments
ruleGroup8 = {}
apiGroup8 = ["apps"]
resourceGroup8 = ["deployments","daemonsets","deployments/rollback","deployments/scale","replicasets","replicasets/scale","statefulsets","statefulsets/scale"]
verbsGroup8 = ["get","watch","list","create","delete","update","patch","deletecollection"]
ruleGroup8["apiGroups"] = apiGroup8
ruleGroup8["resources"] = resourceGroup8
ruleGroup8["verbs"] = verbsGroup8
all_resources.extend(resourceGroup8)
# Impersonate users, groups, serviceaccounts
ruleGroup9 = {}
apiGroup9 = [""]
resourceGroup9 = ["users","groups","serviceaccounts"]
verbsGroup9 = ["impersonate"]
ruleGroup9["apiGroups"] = apiGroup9
ruleGroup9["resources"] = resourceGroup9
ruleGroup9["verbs"] = verbsGroup9
all_resources.extend(resourceGroup9)
# Exec into the Pods and others in the "" apiGroup
ruleGroup10 = {}
apiGroup10 = [""]
resourceGroup10 = ["pods","pods/attach","pods/exec","pods/portforward","pods/proxy","pods/eviction","replicationcontrollers","replicationcontrollers/scale"]
verbsGroup10 = ["get","list","create","update","delete","watch","patch","deletecollection"]
ruleGroup10["apiGroups"] = apiGroup10
ruleGroup10["resources"] = resourceGroup10
ruleGroup10["verbs"] = verbsGroup10
all_resources.extend(resourceGroup10)
# AdmissionRegistration
ruleGroup11 = {}
apiGroup11 = ["admissionregistration.k8s.io"]
resourceGroup11 = ["mutatingwebhookconfigurations"]
verbsGroup11 = ["get","create","delete","update"]
ruleGroup11["apiGroups"] = apiGroup11
ruleGroup11["resources"] = resourceGroup11
ruleGroup11["verbs"] = verbsGroup11
all_resources.extend(resourceGroup11)
# APIExtension
ruleGroup12 = {}
apiGroup12 = ["apiextensions.k8s.io"]
resourceGroup12 = ["customresourcedefinitions"]
verbsGroup12 = ["get","create","delete","update", "patch"]
ruleGroup12["apiGroups"] = apiGroup12
ruleGroup12["resources"] = resourceGroup12
ruleGroup12["verbs"] = verbsGroup12
all_resources.extend(resourceGroup12)
# Certificates
ruleGroup13 = {}
apiGroup13 = ["certificates.k8s.io"]
resourceGroup13 = ["signers"]
resourceNames13 = ["kubernetes.io/legacy-unknown","kubernetes.io/kubelet-serving","kubernetes.io/kube-apiserver-client","cloudark.io/kubeplus"]
verbsGroup13 = ["get","create","delete","update", "patch", "approve"]
ruleGroup13["apiGroups"] = apiGroup13
ruleGroup13["resources"] = resourceGroup13
ruleGroup13["resourceNames"] = resourceNames13
ruleGroup13["verbs"] = verbsGroup13
all_resources.extend(resourceGroup13)
# Read all
ruleGroup14 = {}
apiGroup14 = ["*"]
resourceGroup14 = ["*"]
verbsGroup14 = ["get"]
ruleGroup14["apiGroups"] = apiGroup14
ruleGroup14["resources"] = resourceGroup14
ruleGroup14["verbs"] = verbsGroup14
ruleGroup15 = {}
apiGroup15 = ["certificates.k8s.io"]
resourceGroup15 = ["certificatesigningrequests", "certificatesigningrequests/approval"]
verbsGroup15 = ["create","delete","update", "patch"]
ruleGroup15["apiGroups"] = apiGroup15
ruleGroup15["resources"] = resourceGroup15
ruleGroup15["verbs"] = verbsGroup15
all_resources.extend(resourceGroup15)
ruleGroup16 = {}
apiGroup16 = ["extensions"]
resourceGroup16 = ["deployments","daemonsets","deployments/rollback","deployments/scale","replicasets","replicasets/scale","replicationcontrollers/scale","ingresses","networkpolicies"]
verbsGroup16 = ["get","watch","list","create","delete","update","patch","deletecollection"]
ruleGroup16["apiGroups"] = apiGroup16
ruleGroup16["resources"] = resourceGroup16
ruleGroup16["verbs"] = verbsGroup16
all_resources.extend(resourceGroup16)
ruleGroup17 = {}
apiGroup17 = ["networking.k8s.io"]
resourceGroup17 = ["ingresses","networkpolicies"]
verbsGroup17 = ["get","watch","list","create","delete","update","patch","deletecollection"]
ruleGroup17["apiGroups"] = apiGroup17
ruleGroup17["resources"] = resourceGroup17
ruleGroup17["verbs"] = verbsGroup17
all_resources.extend(resourceGroup17)
ruleGroup18 = {}
apiGroup18 = ["authorization.k8s.io"]
resourceGroup18 = ["localsubjectaccessreviews"]
verbsGroup18 = ["create"]
ruleGroup18["apiGroups"] = apiGroup18
ruleGroup18["resources"] = resourceGroup18
ruleGroup18["verbs"] = verbsGroup18
all_resources.extend(resourceGroup18)
ruleGroup19 = {}
apiGroup19 = ["autoscaling"]
resourceGroup19 = ["horizontalpodautoscalers"]
verbsGroup19 = ["create", "delete", "deletecollection", "patch", "update"]
ruleGroup19["apiGroups"] = apiGroup19
ruleGroup19["resources"] = resourceGroup19
ruleGroup19["verbs"] = verbsGroup19
all_resources.extend(resourceGroup19)
ruleGroup20 = {}
apiGroup20 = ["batch"]
resourceGroup20 = ["cronjobs","jobs"]
verbsGroup20 = ["create", "delete", "deletecollection", "patch", "update"]
ruleGroup20["apiGroups"] = apiGroup20
ruleGroup20["resources"] = resourceGroup20
ruleGroup20["verbs"] = verbsGroup20
all_resources.extend(resourceGroup20)
ruleGroup21 = {}
apiGroup21 = ["policy"]
resourceGroup21 = ["poddisruptionbudgets"]
verbsGroup21 = ["create", "delete", "deletecollection", "patch", "update"]
ruleGroup21["apiGroups"] = apiGroup21
ruleGroup21["resources"] = resourceGroup21
ruleGroup21["verbs"] = verbsGroup21
all_resources.extend(resourceGroup21)
ruleGroup22 = {}
apiGroup22 = [""]
resourceGroup22 = ["resourcequotas"]
verbsGroup22 = ["create", "delete", "deletecollection", "patch", "update"]
ruleGroup22["apiGroups"] = apiGroup22
ruleGroup22["resources"] = resourceGroup22
ruleGroup22["verbs"] = verbsGroup22
all_resources.extend(resourceGroup22)
# PersistentVolumes and PersistentVolumeClaims for charts storage in helmer container
ruleGroup23 = {}
apiGroup23 = [""]
resourceGroup23 = ["persistentvolumes", "persistentvolumeclaims"]
verbsGroup23 = ["get", "watch", "list", "create", "delete", "update", "patch"]
ruleGroup23["apiGroups"] = apiGroup23
ruleGroup23["resources"] = resourceGroup23
ruleGroup23["verbs"] = verbsGroup23
all_resources.extend(resourceGroup23)
ruleList = []
ruleList.append(ruleGroup1)
ruleList.append(ruleGroup2)
ruleList.append(ruleGroup3)
ruleList.append(ruleGroup4)
ruleList.append(ruleGroup5)
ruleList.append(ruleGroup6)
ruleList.append(ruleGroup7)
ruleList.append(ruleGroup8)
ruleList.append(ruleGroup9)
ruleList.append(ruleGroup10)
ruleList.append(ruleGroup11)
ruleList.append(ruleGroup12)
ruleList.append(ruleGroup13)
ruleList.append(ruleGroup14)
ruleList.append(ruleGroup15)
ruleList.append(ruleGroup16)
ruleList.append(ruleGroup17)
ruleList.append(ruleGroup18)
ruleList.append(ruleGroup19)
ruleList.append(ruleGroup20)
ruleList.append(ruleGroup21)
ruleList.append(ruleGroup22)
ruleList.append(ruleGroup23)
role["rules"] = ruleList
roleName = sa + "-role.yaml"
create_role_rolebinding(role, roleName, kubeconfig)
roleBinding = {}
roleBinding["apiVersion"] = "rbac.authorization.k8s.io/v1"
roleBinding["kind"] = "ClusterRoleBinding"
metadata = {}
metadata["name"] = sa
metadata["namespace"] = namespace
roleBinding["metadata"] = metadata
subject = {}
subject["kind"] = "ServiceAccount"
subject["name"] = sa
subject["apiGroup"] = ""
subject["namespace"] = namespace
subjectList = []
subjectList.append(subject)
roleBinding["subjects"] = subjectList
roleRef = {}
roleRef["kind"] = "ClusterRole"
roleRef["name"] = sa
roleRef["apiGroup"] = "rbac.authorization.k8s.io"
roleBinding["roleRef"] = roleRef
roleBindingName = sa + "-rolebinding.yaml"
create_role_rolebinding(roleBinding, roleBindingName, kubeconfig)
# create configmap to store all resources
cfg_map_filename = sa + "-perms.txt"
fp = open(cfg_map_filename, "w")
all_resources.sort()
all_resources_uniq = []
[all_resources_uniq.append(x) for x in all_resources if x not in all_resources_uniq]
fp.write(str(all_resources_uniq))
fp.close()
cfg_map_name = sa + "-perms"
cmd = "kubectl create configmap " + cfg_map_name + " -n " + namespace + " --from-file=" + cfg_map_filename
self.run_command(cmd)
def _update_rbac(self, permissionfile, sa, namespace, kubeconfig):
role = {}
role["apiVersion"] = "rbac.authorization.k8s.io/v1"
role["kind"] = "ClusterRole"
metadata = {}
metadata["name"] = sa + "-update"
metadata["namespace"] = namespace
role["metadata"] = metadata
ruleList = []
ruleGroup = {}
fp = open(permissionfile, "r")
data = fp.read()
perms_data = json.loads(data)
perms = perms_data["perms"]
new_resources = []
for apiGroup, res_actions in perms.items():
for res in res_actions:
for resource, verbs in res.items():
#print(apiGroup + " " + resource + " " + str(verbs))
if resource not in new_resources:
new_resources.append(resource.strip())
ruleGroup = {}
if apiGroup == "non-apigroup":
if 'nonResourceURL' in resource:
parts = resource.split("nonResourceURL::")
nonRes = parts[0].strip()
ruleGroup['nonResourceURLs'] = [nonRes]
ruleGroup['verbs'] = verbs
else:
ruleGroup["apiGroups"] = [apiGroup]
ruleGroup["verbs"] = verbs
if 'resourceName' in resource:
parts = resource.split("/resourceName::")
resNameParent = parts[0].strip()
resName = parts[1].strip()
ruleGroup["resources"] = [resNameParent]
ruleGroup["resourceNames"] = [resName]
else:
ruleGroup["resources"] = [resource]
ruleList.append(ruleGroup)
role["rules"] = ruleList
roleName = sa + "-update-role.yaml"
create_role_rolebinding(role, roleName, kubeconfig)
roleBinding = {}
roleBinding["apiVersion"] = "rbac.authorization.k8s.io/v1"
roleBinding["kind"] = "ClusterRoleBinding"
metadata = {}
metadata["name"] = sa + "-update"
metadata["namespace"] = namespace
roleBinding["metadata"] = metadata
subject = {}
subject["kind"] = "ServiceAccount"
subject["name"] = sa
subject["apiGroup"] = ""
subject["namespace"] = namespace
subjectList = []
subjectList.append(subject)
roleBinding["subjects"] = subjectList
roleRef = {}
roleRef["kind"] = "ClusterRole"
roleRef["name"] = sa + "-update"
roleRef["apiGroup"] = "rbac.authorization.k8s.io"
roleBinding["roleRef"] = roleRef
roleBindingName = sa + "-update-rolebinding.yaml"
create_role_rolebinding(roleBinding, roleBindingName, kubeconfig)
# Read configmap to get earlier permissions; delete it and create it with all new permissions:
cfg_map_name = sa + "-perms"
cfg_map_filename = sa + "-perms.txt"
cmd = "kubectl get configmap " + cfg_map_name + " -o json -n " + namespace
out1, err1 = self.run_command(cmd)
#print("Original Perms Out:" + str(out1))
#print("Perms Err:" + str(err1))
kubeplus_perms = []
if out1 != '':
json_op = json.loads(out1)
perms = json_op['data'][cfg_map_filename]
#print(perms)
k_perms = perms.split(",")
for p in k_perms:
p = p.replace("'","")
p = p.replace("[","")
p = p.replace("]","")
p = p.strip()
kubeplus_perms.append(p)
new_resources.extend(kubeplus_perms)
#print("New perms:" + str(new_resources))
cmd = "kubectl delete configmap " + cfg_map_name + " -n " + namespace
self.run_command(cmd)
# create configmap to store all resources
fp = open(cfg_map_filename, "w")
new_resources.sort()
new_resources_uniq = []
[new_resources_uniq.append(x) for x in new_resources if x not in new_resources_uniq]
fp.write(str(new_resources_uniq))
fp.close()
cmd = "kubectl create configmap " + cfg_map_name + " -n " + namespace + " --from-file=" + cfg_map_filename
self.run_command(cmd)
def _apply_rbac(self, sa, namespace, entity='', kubeconfig=''):
if entity == 'provider':
self._apply_provider_rbac(sa, namespace, kubeconfig)
if entity == 'consumer':
self._apply_consumer_rbac(sa, namespace, kubeconfig)
def _create_secret(self, sa, namespace, kubeconfig):
annotations = {}
annotations['kubernetes.io/service-account.name'] = sa
metadata = {}
metadata['name'] = sa
metadata['namespace'] = namespace
metadata['annotations'] = annotations
secret = {}
secret['apiVersion'] = "v1"
secret['kind'] = "Secret"
secret['metadata'] = metadata
secret['type'] = 'kubernetes.io/service-account-token'
secretName = sa + "-secret.yaml"
filePath = os.getcwd() + "/" + secretName
fp = open(filePath, "w")
yaml_content = yaml.dump(secret)
fp.write(yaml_content)
fp.close()
#print("---")
#print(yaml_content)
#print("---")
created = False
count = 0
while not created and count < 5:
cmd = " kubectl create -f " + filePath + kubeconfig
out, err = self.run_command(cmd)
if out != '':
out = out.decode('utf-8').strip()
#print(out)
if 'created' in out:
created = True
else:
time.sleep(2)
count = count + 1
#print("Create secret:" + out)
if not created and count >= 5:
print(err)
sys.exit()
return out
def _extract_kubeconfig(self, sa, namespace, filename, serverip='', kubecfg='', cluster_name=None):
#print("Extracting kubeconfig")
secretName = sa
tokenFound = False
kubeconfig = kubecfg
api_server_ip = serverip
cmdprefix = ""
while not tokenFound:
cmd1 = " kubectl describe secret " + secretName + " -n " + namespace + kubeconfig
cmdToRun = cmdprefix + " " + cmd1
out1 = subprocess.Popen(cmdToRun, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()[0]
out1 = out1.decode('utf-8')
#print(out1)
token = ''
for line in out1.split("\n"):
if 'token' in line:
parts = line.split(":")
token = parts[1].strip()
if token != '':
tokenFound = True
else:
time.sleep(2)
cmd1 = " kubectl get secret " + secretName + " -n " + namespace + " -o json " + kubeconfig
cmdToRun = cmdprefix + " " + cmd1
out1 = subprocess.Popen(cmdToRun, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()[0]
out1 = out1.decode('utf-8')
json_output1 = json.loads(out1)
ca_cert = json_output1["data"]["ca.crt"].strip()
#print("CA Cert:" + ca_cert)
#cmd2 = " kubectl config view --minify -o json "
server = ''
if api_server_ip == '':
cmd2 = "kubectl -n default get endpoints kubernetes " + kubeconfig + " | awk '{print $2}' | grep -v ENDPOINTS"
cmdToRun = cmdprefix + " " + cmd2
out2 = subprocess.Popen(cmdToRun, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()[0]
#print("Config view Minify:")
#print(out2)
out2 = out2.decode('utf-8')
#json_output2 = json.loads(out2)
#server = json_output2["clusters"][0]["cluster"]["server"].strip()
server = out2.strip()
server = "https://" + server
else:
if "https" not in api_server_ip:
server = "https://" + api_server_ip
else:
server = api_server_ip
#print("Kube API Server:" + server)
self._create_kubecfg_file(sa, namespace, filename, token, ca_cert, server, kubeconfig, cluster_name)
def _generate_kubeconfig(self, sa, namespace, filename, api_server_ip='', kubeconfig='', cluster_name=None):
cmdprefix = ""
cmd = " kubectl create sa " + sa + " -n " + namespace + kubeconfig
cmdToRun = cmdprefix + " " + cmd
self.run_command(cmdToRun)
#cmd = " kubectl get sa " + sa + " -n " + namespace + " -o json "
#cmdToRun = cmdprefix + " " + cmd
#out = subprocess.Popen(cmdToRun, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).communicate()[0]
secretName = sa
out = self._create_secret(secretName, namespace, kubeconfig)
#print("Create secret:" + out)
if 'secret/' + sa + ' created' in out:
#json_output = json.loads(out)
#secretName = json_output["secrets"][0]["name"]
#print("Secret Name:" + secretName)
# Moving from here
#print("Got secret token")
self._extract_kubeconfig(sa, namespace, filename, serverip=api_server_ip, kubecfg=kubeconfig, cluster_name=cluster_name)
if __name__ == '__main__':
kubeconfigPath = os.getenv("HOME") + "/.kube/config"
parser = argparse.ArgumentParser()
parser.add_argument("action", help="command", choices=['create', 'delete', 'update', 'extract'])
parser.add_argument("namespace", help="namespace in which KubePlus will be installed.")
parser.add_argument("-k", "--kubeconfig", help='''This flag is used to specify the path
of the kubeconfig file that should be used for executing steps in provider-kubeconfig.
The default value is ~/.kube/config''')
parser.add_argument("-s", "--apiserverurl", help='''This flag is to be used to pass the API Server URL of the
API server on which KubePlus is installed. This API Server URL will be used in constructing the
server endpoint in the provider kubeconfig. Use the command
`kubectl config view --minify -o jsonpath='{.clusters[0].cluster.server}'`
to retrieve the API Server URL.''')
parser.add_argument("-f", "--filename", help='''This flag is used to specify the
output file name in which generated provider kubeconfig will be store
(The default value is kubeplus-saas-provider.json)''')
parser.add_argument("-x", "--clustername", help='''This flag is used to specify the name of the cluster.
This name will be used in setting the value of the context attribute, along with the cluster name,
in the generated kubeconfig file.''')
permission_help = "permissions file - use with update command.\n"
permission_help = permission_help + "Should be a JSON file with the following structure:\n"
permission_help = permission_help + "{perms:{<apiGroup1>:[{resource1|resource/resourceName::<resourceName>: [verb1, verb2, ...]}, {resource2: [..]}], {<apiGroup2>:[...]}}}"
parser.add_argument("-p", "--permissionfile", help=permission_help)
parser.add_argument("-c", "--consumer", help="Generate kubeconfig for consumer")
pargs = parser.parse_args()
#print(pargs.action)
#print(pargs.namespace)
action = pargs.action
namespace = pargs.namespace
if pargs.kubeconfig:
#print("Kubeconfig file:" + pargs.kubeconfig)
kubeconfigPath = pargs.kubeconfig
kubeconfigString = " --kubeconfig=" + kubeconfigPath
api_s_ip = ''
if pargs.apiserverurl:
#print("Server ip:" + pargs.serverip)
api_s_ip = pargs.apiserverurl
permission_file = ''
if pargs.permissionfile:
#print("Permission file:" + pargs.permissionfile)
permission_file = pargs.permissionfile
cluster_name = ''
if pargs.clustername:
#print("Cluster name:" + pargs.clustername)
cluster_name = pargs.clustername
if action == 'update' and permission_file == '':
print("Permission file missing. Please provide permission file.")
print(permission_help)
exit(0)
kubeconfigGenerator = KubeconfigGenerator()
sa = 'kubeplus-saas-provider'
if pargs.consumer:
sa = pargs.consumer
filename = sa
if pargs.filename:
filename = pargs.filename
if not filename.endswith(".json"):
filename += ".json"
if action == "create":
if permission_file:
print("Permissions file should be used with update command.")
exit(1)
create_ns = "kubectl get ns " + namespace + kubeconfigString
out, err = run_command(create_ns)
if 'not found' in out or 'not found' in err:
run_command(create_ns)
cmd = "kubectl label --overwrite=true ns " + namespace + " managedby=kubeplus " + kubeconfigString
run_command(cmd)
# 1. Generate Provider kubeconfig
if sa == "kubeplus-saas-provider":
kubeconfigGenerator._generate_kubeconfig(sa, namespace, filename, api_server_ip=api_s_ip, kubeconfig=kubeconfigString, cluster_name=cluster_name)
kubeconfigGenerator._apply_rbac(sa, namespace, entity='provider', kubeconfig=kubeconfigString)
print("Provider kubeconfig created: " + filename)
else:
kubeconfigGenerator._generate_kubeconfig(sa, namespace, filename, api_server_ip=api_s_ip, kubeconfig=kubeconfigString, cluster_name=cluster_name)
kubeconfigGenerator._apply_rbac(sa, namespace, entity='consumer', kubeconfig=kubeconfigString)
print("Consumer kubeconfig created: " + filename)
if action == "extract":
kubeconfigGenerator._extract_kubeconfig(sa, namespace, filename, serverip=api_s_ip, kubecfg=kubeconfigString)
print("Provider kubeconfig created: " + filename)
if action == "update":
kubeconfigGenerator._update_rbac(permission_file, sa, namespace, kubeconfigString)
print("kubeconfig permissions updated: " + filename)
if action == "delete":
run_command("kubectl delete sa " + sa + " -n " + namespace + kubeconfigString)
run_command("kubectl delete configmap " + sa + " -n " + namespace + kubeconfigString)
run_command("kubectl delete clusterrole " + sa + " -n " + namespace + kubeconfigString)
run_command("kubectl delete clusterrolebinding " + sa + " -n " + namespace + kubeconfigString)
run_command("kubectl delete clusterrole " + sa + "-update" + " -n " + namespace + kubeconfigString)
run_command("kubectl delete clusterrolebinding " + sa + "-update" + " -n " + namespace + kubeconfigString)
perms_cfg_map = sa + "-perms"
run_command("kubectl delete configmap " + perms_cfg_map + " -n " + namespace)
cwd = os.getcwd()
run_command("rm " + cwd + "/" + sa + "-secret.yaml")
run_command("rm " + cwd + "/" + filename)
run_command("rm " + cwd + "/" + sa + "-role.yaml")
run_command("rm " + cwd + "/" + sa + "-update-role.yaml")
run_command("rm " + cwd + "/" + sa + "-rolebinding.yaml")
run_command("rm " + cwd + "/" + sa + "-role-impersonate.yaml")
run_command("rm " + cwd + "/" + sa + "-rolebinding-impersonate.yaml")
run_command("rm " + cwd + "/" + sa + "-update-rolebinding.yaml")
run_command("rm " + cwd + "/" + sa + "-perms.txt")
run_command("rm " + cwd + "/" + sa + "-perms-update.txt")