-
Notifications
You must be signed in to change notification settings - Fork 0
/
VM_Adapter.py
638 lines (515 loc) · 24 KB
/
VM_Adapter.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
import os
import time
import boto.ec2
import boto.manage.cmdshell
import logging
import random
import subprocess
from datetime import date,timedelta
import novaclient.v1_1.client as nvclient
from credentials import get_nova_creds
class VM_Adapter(object):
"""docstring for VM_Adapter"""
def __init__(self, vm_name, image_id, vm_ram, vm_disk, vm_vcpus):
"""
Constructor to create a connection and a Virtual Machine.
:param vm_name: The name of the Virtual Machine to create
:param image_name: The name of the image through which we create.
:param vm_ram: The ram size of the Virtual Machine.
:param vm_disk: The disk size of the Virtual Machine.
:param vm_vcpus: Number of CPU's required by the Virtual Machine.
"""
logging.basicConfig(filename='openstack.log', level=logging.DEBUG, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s' , datefmt='%m/%d/%Y %I:%M:%S %p')
try:
# Connections with novaClient(compute API) --------------------
logging.info('Establishing Connection.')
creds = get_nova_creds()
self.nova = nvclient.Client(**creds)
except:
logging.error('Invalid Credentials.')
logging.critical('Connection Aborted.')
raise
try:
# Connections with novaClient(compute API) --------------------
is_instance_present = False
instance = self.create(vm_name, image_id, vm_ram, vm_disk, vm_vcpus)
self.instance = instance
except:
logging.error('Virtual Machine not Created.')
raise
# Creating Virtual Machine --------------------
def create(self, vm_name, image_id, vm_ram, vm_disk, vm_vcpus):
"""
Create a VM Instance.
:param vm_name: The name of the Virtual Machine to create
:param image_name: The name of the image through which we create.
:param vm_ram: The ram size of the Virtual Machine.
:param vm_disk: The disk size of the Virtual Machine.
:param vm_vcpus: Number of CPU's required by the Virtual Machine.
:rtype: :object: Virtual Machine object.
"""
try:
self.key_name = 'key_pair'
logging.info('Waiting for Virtual Machine to Create.')
if not self.nova.keypairs.findall(name=self.key_name):
with open(os.path.expanduser('~/.ssh/id_rsa.pub')) as fpubkey:
self.nova.keypairs.create(name=self.key_name, public_key=fpubkey.read())
vm_flavor = self.set_flavor(vm_ram, vm_disk, vm_vcpus)
image_object = self.nova.images.get(image_id)
instance = self.nova.servers.create(name=vm_name, image=image_object, flavor=vm_flavor, meta=None, key_name=self.key_name)
logging.info('Virtual Machine is in Pending State.')
self.is_instance_present = True
return instance
except:
logging.error('Virtual Machine not Created.')
raise
# Set Flavor for Virtual Machine --------------------
def set_flavor(self, vm_ram, vm_disk, vm_vcpus):
"""
Set the Flavor for a Virtual Machine.
:param vm_ram: The ram size of the Virtual Machine.
:param vm_disk: The disk size of the Virtual Machine.
:param vm_vcpus: Number of CPU's required by the Virtual Machine.
:rtype: string: The ID of the flavor.
"""
try:
logging.info('Flavor is being set.')
flavor_flag = 0
for flavor in self.nova.flavors.list():
if (flavor.ram == vm_ram) and (flavor.disk == vm_disk) and (flavor.vcpus == vm_vcpus):
flavor_flag = 1
vm_flavor = flavor.id
logging.info('Flavor set from the existing flavors.')
if flavor_flag == 0:
flavor_name = 'flavor_'+str(vm_ram)+'_'+str(vm_disk)+'_'+str(vm_vcpus)
flavor = self.nova.flavors.create(name=flavor_name, ram=vm_ram, vcpus=vm_vcpus, disk=vm_disk)
vm_flavor = flavor.id
logging.info('Flavor set by creating a new flavor.')
return vm_flavor
except:
logging.error('Flavor not created.')
raise
# Destroy Virtual Machine --------------------
def destroy(self):
"""
Destroy(Delete) a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
logging.info('Waiting for Virtual Machine to Terminate.')
logging.info('Terminated Virtual Machine IP is %s', self.instance.networks)
logging.info('Terminated Virtual Machine ID is %s', self.instance.id)
self.instance = self.nova.servers.get(self.instance.id)
self.is_instance_present = False
self.instance.delete()
del self.instance
logging.info('Virtual Machine has now been Terminated.')
except:
logging.error('Virtual Machine not Terminated.')
raise
# Start Virtual Machine --------------------
def start(self):
"""
Start a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
self.instance = self.nova.servers.get(self.instance.id)
if self.instance.status == 'ACTIVE':
logging.info('%s Virtual Machine is already Running', self.instance.id)
elif self.instance.status != 'ACTIVE':
logging.info('Waiting for Virtual Machine to Start.')
self.instance.start()
logging.info('Virtual Machine is now getting Started.')
logging.info('Started Virtual Machine IP is %s', self.instance.networks)
logging.info('Started Virtual Machine ID is %s', self.instance.id)
except:
logging.error('Virtual Machine not Started.')
raise
# Stop Virtual Machine --------------------
def stop(self):
"""
Stop a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
if self.instance.status == 'SHUTOFF':
logging.info('%s Virtual Machine is already Stopped.', self.instance.id)
elif self.instance.status != 'SHUTOFF':
self.instance.stop()
logging.info('Waiting for Virtual Machine to Stop.....')
logging.info('Stopped Virtual Machine IP is %s', self.instance.networks)
logging.info('Stopped Virtual Machine ID is %s', self.instance.id)
except:
logging.info('Virtual Machine is not Stopped(Shut Off).')
raise
# Suspend Virtual Machine --------------------
def suspend(self):
"""
Suspend a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
if self.instance.status == 'SUSPENDED':
logging.info('%s Virtual Machine is already Suspended', self.instance.id)
elif self.instance.status != 'SUSPENDED':
self.instance.suspend()
logging.info('Waiting for Virtual Machine to Suspend.')
logging.info('Suspended Virtual Machine IP is %s', self.instance.networks)
logging.info('Suspended Virtual Machine ID is %s', self.instance.id)
except:
logging.info('Virtual Machine is not Suspended.')
raise
# Pause Virtual Machine --------------------
def pause(self):
"""
Pause a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
if self.instance.status == 'PAUSED':
logging.info('%s Virtual Machine is already Paused', self.instance.id)
elif self.instance.status != 'PAUSED':
self.instance.pause()
logging.info('Waiting for Virtual Machine to Pause.')
logging.info('Paused Virtual Machine IP is %s', self.instance.networks)
logging.info('Paused Virtual Machine ID is %s', self.instance.id)
except:
logging.info('Virtual Machine is not Paused.')
raise
# Validate Virtual Machine ID --------------------
def validate_vm_id(self):
"""
Check validity of a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
vm_list = self.nova.servers.list()
for vm in vm_list:
if self.instance.id == vm.id:
logging.info('%s Virtual Machine is a valid Instance.', self.instance.id)
logging.info('Virtual Machine IP is %s', self.instance.networks)
logging.info('Virtual Machine ID is %s', self.instance.id)
return self.instance.id
except:
logging.info('%s Virtual Machine is a invalid Instance.', self.instance.id)
raise
# Is Running Virtual Machine --------------------
def is_running_vm(self):
"""
Check whether Virtual Machine is running or not.
:rtype: string: Returning the status of the Virtual Machine.
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
if self.instance.status == 'ACTIVE':
logging.info('%s Virtual Machine is a Running Instance.', self.instance.id)
logging.info('Running Virtual Machine IP is %s', self.instance.networks)
logging.info('Running Virtual Machine ID is %s', self.instance.id)
return self.instance.status
else:
logging.info('%s Instance is a not Running Instance.', self.instance.id)
logging.info('Not Running Virtual Machine IP is %s', self.instance.networks)
logging.info('Not Running Virtual Machine ID is %s', self.instance.id)
return self.instance.status
except:
logging.error('%s Virtual Machine details are incomplete. Status cant be retrieved.', self.instance.id)
raise
# Get Virtual Machine IP --------------------
def get_ip(self):
"""
Get IP of a Virtual Machine.
:rtype: string: IP Address of the Virtual Machine.
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
logging.info('Virtual Machine IP is %s', self.instance.networks)
logging.info('Virtual Machine ID is %s', self.instance.id)
return self.instance.networks
except:
logging.error('%s Virtual Machine details are incomplete. IP cant be retrieved.', self.instance.id)
raise
# Get RAM Size of a Virtual Machine --------------------
def get_ram(self):
"""
Get ram size of a Virtual Machine.
:rtype: integer: Ram Size of the Virtual Machine.
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
ram = flavor_object.ram
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine RAM Size is %s', ram)
return ram
except:
logging.error('%s Virtual Machine details are incomplete. Ram Size cant be retrieved.', self.instance.id)
raise
# Get Disk Size of a Virtual Machine --------------------
def get_disk(self):
"""
Get disk size of a Virtual Machine.
:rtype: integer: Disk Size of the Virtual Machine.
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
disk = flavor_object.disk
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine DISK Size is %s', disk)
return disk
except:
logging.error('%s Virtual Machine details are incomplete. Disk Size cant be retrieved.', self.instance.id)
raise
# Get flavor of Virtual Machine --------------------
def get_flavor(self):
"""
Get flavor of a Virtual Machine.
:rtype: dict: Details of the Virtual Machine flavor
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
flavor = {}
flavor['Virtual_Machine_Name'] = str(self.instance.name)
flavor['Virtual_Machine_ID'] = str(self.instance.id)
flavor['Flavor_Name'] = str(flavor_object.name)
flavor['Flavor_ID'] = str(flavor_object.id)
flavor['Ram_Size'] = flavor_object.ram
flavor['Disk_Size'] = flavor_object.disk
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine Flavor is %s', flavor)
return flavor
except:
logging.error('%s Virtual Machine details are incomplete. Flavor cant be retrieved.', self.instance.id)
raise
# Change RAM size of a Virtual Machine --------------------
def change_ram(self, new_ram):
"""
Change ram size (keeping other things same) of a Virtual Machine.
:param new_ram: The new ram size to be allocated.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
vm_disk = flavor_object.disk
vm_vcpus = flavor_object.vcpus
new_flavor_id = self.set_flavor(new_ram, vm_disk, vm_vcpus)
new_flavor_object = self.nova.flavors.get(new_flavor_id)
logging.info('New_Flavor_Object %s', new_flavor_object)
logging.info('New_Flavor_ID %s', new_flavor_id)
self.nova.servers.resize(server=self.instance.id, flavor=new_flavor_object)
self.instance = self.nova.servers.get(self.instance.id)
while self.instance.status != 'VERIFY_RESIZE':
time.sleep(5)
logging.info('Checking for Confirmation')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.confirm_resize(server=self.instance)
logging.info('Confirmation Done')
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine FLAVOR is %s', new_flavor_object.name)
logging.info('Virtual Machine RAM Size is %s', new_flavor_object.ram)
logging.info('Virtual Machine DISK Size is %s', new_flavor_object.disk)
logging.info('Virtual Machine VCPUS Size is %s', new_flavor_object.vcpus)
except:
logging.error('%s Virtual Machine details are incomplete. Ram Size cant be changed.', self.instance.id)
raise
# Change DISK size of a Virtual Machine --------------------
def change_disk(self, new_disk):
"""
Change disk size (keeping other things same) of a Virtual Machine.
:param new_disk: The new disk size to be allocated.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
vm_ram = flavor_object.ram
vm_vcpus = flavor_object.vcpus
new_flavor_id = self.set_flavor(vm_ram, new_disk, vm_vcpus)
new_flavor_object = self.nova.flavors.get(new_flavor_id)
logging.info('New_Flavor_Object %s', new_flavor_object)
logging.info('New_Flavor_ID %s', new_flavor_id)
self.nova.servers.resize(server=self.instance.id, flavor=new_flavor_object)
self.instance = self.nova.servers.get(self.instance.id)
while self.instance.status != 'VERIFY_RESIZE':
time.sleep(5)
logging.info('Checking for Confirmation')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.confirm_resize(server=self.instance)
logging.info('Confirmation Done')
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine FLAVOR is %s', new_flavor_object.name)
logging.info('Virtual Machine RAM Size is %s', new_flavor_object.ram)
logging.info('Virtual Machine DISK Size is %s', new_flavor_object.disk)
logging.info('Virtual Machine VCPUS Size is %s', new_flavor_object.vcpus)
except:
logging.error('%s Virtual Machine details are incomplete. Disk Size cant be changed.', self.instance.id)
raise
# Change flavor of Virtual Machine --------------------
def change_flavor(self, new_ram, new_disk):
"""
Change flavor of a Virtual Machine.
:param new_ram: The new ram size to be allocated.
:param new_disk: The new disk size to be allocated.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
flavor_id = self.instance.flavor.get('id')
flavor_object = self.nova.flavors.get(flavor_id)
vm_vcpus = flavor_object.vcpus
new_flavor_id = self.set_flavor(new_ram, new_disk, vm_vcpus)
new_flavor_object = self.nova.flavors.get(new_flavor_id)
logging.info('New_Flavor_Object %s', new_flavor_object)
logging.info('New_Flavor_ID %s', new_flavor_id)
self.nova.servers.resize(server=self.instance.id, flavor=new_flavor_object)
self.instance = self.nova.servers.get(self.instance.id)
while self.instance.status != 'VERIFY_RESIZE':
time.sleep(5)
logging.info('Checking for Confirmation')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.confirm_resize(server=self.instance)
self.instance = self.nova.servers.get(self.instance.id)
logging.info('Virtual Machine ID is %s', self.instance.id)
logging.info('Virtual Machine FLAVOR is %s', new_flavor_object.name)
logging.info('Virtual Machine DISK Size is %s', new_flavor_object.disk)
logging.info('Virtual Machine RAM Size is %s', new_flavor_object.ram)
logging.info('Virtual Machine VCPUS Size is %s', new_flavor_object.vcpus)
except:
logging.error('%s Virtual Machine details are incomplete. DISK Size cant be changed.', self.instance.id)
raise
# Restart Virtual Machine --------------------
def restart(self):
"""
Restart a Virtual Machine.
:rtype: NULL
"""
try:
assert(self.is_instance_present)
except:
logging.warning('Virtual Machine does not exist.')
raise
try:
logging.info('Present status of Virtual Machine is %s', self.instance.status)
self.instance = self.nova.servers.get(self.instance.id)
if self.instance.status == 'ACTIVE':
logging.info('Rebooting an ACTIVE Virtual Machine')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.reboot(self.instance,reboot_type='SOFT')
logging.info('Waiting for the Virtual Machine to Reboot')
elif self.instance.status == 'PAUSED':
logging.info('Unpausing(Starting) a PAUSED Virtual Machine')
self.nova.servers.unpause(self.instance)
while self.instance.status != 'ACTIVE':
time.sleep(20)
self.instance = self.nova.servers.get(self.instance.id)
logging.info('Waiting for the Virtual Machine to Unpause(Start)')
logging.info('Rebooting an ACTIVE Virtual Machine')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.reboot(self.instance,reboot_type='SOFT')
elif self.instance.status == 'SUSPENDED':
logging.info('Resuming(Starting) a SUSPENDED Virtual Machine')
self.nova.servers.resume(self.instance)
self.instance = self.nova.servers.get(self.instance.id)
while self.instance.status != 'ACTIVE':
time.sleep(20)
self.instance = self.nova.servers.get(self.instance.id)
logging.info('Waiting for the Virtual Machine to Resume(Start)')
logging.info('Rebooting an ACTIVE Virtual Machine')
self.instance = self.nova.servers.get(self.instance.id)
self.nova.servers.reboot(self.instance,reboot_type='SOFT')
logging.info('Waiting for the Virtual Machine to Reboot')
except:
logging.error('%s Virtual Machine details are incomplete. Virtual Machine REBOOT is not possible.', self.instance.id)
raise
#vm_1 = VM_Adapter(vm_name='h2', image_name='image1', vm_ram=2048, vm_disk=20, vm_vcpus=1)
#vm_1.set_flavor(vm_ram=2000, vm_disk=2, vm_vcpus=1)
#vm_1.stop()
#vm_1.start()
#vm_1.restart()
#vm_1.suspend()
#vm_1.restart()
#vm_1.pause()
#vm_1.restart()
#vm_1.validate_vm_id()
#vm_1.is_running_vm()
#vm_1.get_ip()
#vm_1.get_ram()
#vm_1.get_disk()
#vm_1.get_flavor()
#vm_1.change_ram(new_ram=3000)
#vm_1.change_disk(new_disk=30)
#vm_1.change_flavor(new_ram=3000, new_disk=35)
#vm_1.destroy()
#vm_1 = VM_Adapter(vm_name='h1', image_id='2df7f480-587a-401d-af2f-fab947303dfb', vm_ram=2048, vm_disk=20, vm_vcpus=1)
#time.sleep(10)
#vm_1.ssh_connect_to_vm()