root / snf-cyclades-app / synnefo / logic / backend.py @ 3c52a9df
History | View | Annotate | Download (36.1 kB)
1 |
# Copyright 2011-2013 GRNET S.A. All rights reserved.
|
---|---|
2 |
#
|
3 |
# Redistribution and use in source and binary forms, with or
|
4 |
# without modification, are permitted provided that the following
|
5 |
# conditions are met:
|
6 |
#
|
7 |
# 1. Redistributions of source code must retain the above
|
8 |
# copyright notice, this list of conditions and the following
|
9 |
# disclaimer.
|
10 |
#
|
11 |
# 2. Redistributions in binary form must reproduce the above
|
12 |
# copyright notice, this list of conditions and the following
|
13 |
# disclaimer in the documentation and/or other materials
|
14 |
# provided with the distribution.
|
15 |
#
|
16 |
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 |
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 |
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 |
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 |
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 |
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 |
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 |
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 |
# POSSIBILITY OF SUCH DAMAGE.
|
28 |
#
|
29 |
# The views and conclusions contained in the software and
|
30 |
# documentation are those of the authors and should not be
|
31 |
# interpreted as representing official policies, either expressed
|
32 |
# or implied, of GRNET S.A.
|
33 |
from django.conf import settings |
34 |
from django.db import transaction |
35 |
from datetime import datetime, timedelta |
36 |
|
37 |
from synnefo.db.models import (Backend, VirtualMachine, Network, |
38 |
BackendNetwork, BACKEND_STATUSES, |
39 |
pooled_rapi_client, VirtualMachineDiagnostic, |
40 |
Flavor) |
41 |
from synnefo.logic import utils |
42 |
from synnefo import quotas |
43 |
from synnefo.api.util import release_resource |
44 |
from synnefo.util.mac2eui64 import mac2eui64 |
45 |
from synnefo.logic.rapi import GanetiApiError |
46 |
|
47 |
from logging import getLogger |
48 |
log = getLogger(__name__) |
49 |
|
50 |
|
51 |
_firewall_tags = { |
52 |
'ENABLED': settings.GANETI_FIREWALL_ENABLED_TAG,
|
53 |
'DISABLED': settings.GANETI_FIREWALL_DISABLED_TAG,
|
54 |
'PROTECTED': settings.GANETI_FIREWALL_PROTECTED_TAG}
|
55 |
|
56 |
_reverse_tags = dict((v.split(':')[3], k) for k, v in _firewall_tags.items()) |
57 |
|
58 |
|
59 |
NIC_FIELDS = ["state", "mac", "ipv4", "ipv6", "network", "firewall_profile"] |
60 |
|
61 |
|
62 |
def handle_vm_quotas(vm, job_id, job_opcode, job_status, job_fields): |
63 |
"""Handle quotas for updated VirtualMachine.
|
64 |
|
65 |
Update quotas for the updated VirtualMachine based on the job that run on
|
66 |
the Ganeti backend. If a commission has been already issued for this job,
|
67 |
then this commission is just accepted or rejected based on the job status.
|
68 |
Otherwise, a new commission for the given change is issued, that is also in
|
69 |
force and auto-accept mode. In this case, previous commissions are
|
70 |
rejected, since they reflect a previous state of the VM.
|
71 |
|
72 |
"""
|
73 |
if job_status not in ["success", "error", "canceled"]: |
74 |
return vm
|
75 |
|
76 |
# Check successful completion of a job will trigger any quotable change in
|
77 |
# the VM state.
|
78 |
action = utils.get_action_from_opcode(job_opcode, job_fields) |
79 |
if action == "BUILD": |
80 |
# Quotas for new VMs are automatically accepted by the API
|
81 |
return vm
|
82 |
commission_info = quotas.get_commission_info(vm, action=action, |
83 |
action_fields=job_fields) |
84 |
|
85 |
if vm.task_job_id == job_id and vm.serial is not None: |
86 |
# Commission for this change has already been issued. So just
|
87 |
# accept/reject it. Special case is OP_INSTANCE_CREATE, which even
|
88 |
# if fails, must be accepted, as the user must manually remove the
|
89 |
# failed server
|
90 |
serial = vm.serial |
91 |
if job_status == "success": |
92 |
quotas.accept_serial(serial) |
93 |
elif job_status in ["error", "canceled"]: |
94 |
log.debug("Job %s failed. Rejecting related serial %s", job_id,
|
95 |
serial) |
96 |
quotas.reject_serial(serial) |
97 |
vm.serial = None
|
98 |
elif job_status == "success" and commission_info is not None: |
99 |
log.debug("Expected job was %s. Processing job %s. Commission for"
|
100 |
" this job: %s", vm.task_job_id, job_id, commission_info)
|
101 |
# Commission for this change has not been issued, or the issued
|
102 |
# commission was unaware of the current change. Reject all previous
|
103 |
# commissions and create a new one in forced mode!
|
104 |
commission_name = ("client: dispatcher, resource: %s, ganeti_job: %s"
|
105 |
% (vm, job_id)) |
106 |
quotas.handle_resource_commission(vm, action, |
107 |
commission_info=commission_info, |
108 |
commission_name=commission_name, |
109 |
force=True,
|
110 |
auto_accept=True)
|
111 |
log.debug("Issued new commission: %s", vm.serial)
|
112 |
|
113 |
return vm
|
114 |
|
115 |
|
116 |
@transaction.commit_on_success
|
117 |
def process_op_status(vm, etime, jobid, opcode, status, logmsg, nics=None, |
118 |
job_fields=None):
|
119 |
"""Process a job progress notification from the backend
|
120 |
|
121 |
Process an incoming message from the backend (currently Ganeti).
|
122 |
Job notifications with a terminating status (sucess, error, or canceled),
|
123 |
also update the operating state of the VM.
|
124 |
|
125 |
"""
|
126 |
# See #1492, #1031, #1111 why this line has been removed
|
127 |
#if (opcode not in [x[0] for x in VirtualMachine.BACKEND_OPCODES] or
|
128 |
if status not in [x[0] for x in BACKEND_STATUSES]: |
129 |
raise VirtualMachine.InvalidBackendMsgError(opcode, status)
|
130 |
|
131 |
vm.backendjobid = jobid |
132 |
vm.backendjobstatus = status |
133 |
vm.backendopcode = opcode |
134 |
vm.backendlogmsg = logmsg |
135 |
|
136 |
if status in ["queued", "waiting", "running"]: |
137 |
vm.save() |
138 |
return
|
139 |
|
140 |
if job_fields is None: |
141 |
job_fields = {} |
142 |
state_for_success = VirtualMachine.OPER_STATE_FROM_OPCODE.get(opcode) |
143 |
|
144 |
# Notifications of success change the operating state
|
145 |
if status == "success": |
146 |
if state_for_success is not None: |
147 |
vm.operstate = state_for_success |
148 |
beparams = job_fields.get("beparams", None) |
149 |
if beparams:
|
150 |
# Change the flavor of the VM
|
151 |
_process_resize(vm, beparams) |
152 |
# Update backendtime only for jobs that have been successfully
|
153 |
# completed, since only these jobs update the state of the VM. Else a
|
154 |
# "race condition" may occur when a successful job (e.g.
|
155 |
# OP_INSTANCE_REMOVE) completes before an error job and messages arrive
|
156 |
# in reversed order.
|
157 |
vm.backendtime = etime |
158 |
|
159 |
if status in ["success", "error", "canceled"] and nics is not None: |
160 |
# Update the NICs of the VM
|
161 |
_process_net_status(vm, etime, nics) |
162 |
|
163 |
# Special case: if OP_INSTANCE_CREATE fails --> ERROR
|
164 |
if opcode == 'OP_INSTANCE_CREATE' and status in ('canceled', 'error'): |
165 |
vm.operstate = 'ERROR'
|
166 |
vm.backendtime = etime |
167 |
elif opcode == 'OP_INSTANCE_REMOVE': |
168 |
# Special case: OP_INSTANCE_REMOVE fails for machines in ERROR,
|
169 |
# when no instance exists at the Ganeti backend.
|
170 |
# See ticket #799 for all the details.
|
171 |
if status == 'success' or (status == 'error' and |
172 |
not vm_exists_in_backend(vm)):
|
173 |
# VM has been deleted
|
174 |
for nic in vm.nics.all(): |
175 |
# Release the IP
|
176 |
release_nic_address(nic) |
177 |
# And delete the NIC.
|
178 |
nic.delete() |
179 |
vm.deleted = True
|
180 |
vm.operstate = state_for_success |
181 |
vm.backendtime = etime |
182 |
status = "success"
|
183 |
|
184 |
if status in ["success", "error", "canceled"]: |
185 |
# Job is finalized: Handle quotas/commissioning
|
186 |
vm = handle_vm_quotas(vm, job_id=jobid, job_opcode=opcode, |
187 |
job_status=status, job_fields=job_fields) |
188 |
# and clear task fields
|
189 |
if vm.task_job_id == jobid:
|
190 |
vm.task = None
|
191 |
vm.task_job_id = None
|
192 |
|
193 |
vm.save() |
194 |
|
195 |
|
196 |
def _process_resize(vm, beparams): |
197 |
"""Change flavor of a VirtualMachine based on new beparams."""
|
198 |
old_flavor = vm.flavor |
199 |
vcpus = beparams.get("vcpus", old_flavor.cpu)
|
200 |
ram = beparams.get("maxmem", old_flavor.ram)
|
201 |
if vcpus == old_flavor.cpu and ram == old_flavor.ram: |
202 |
return
|
203 |
try:
|
204 |
new_flavor = Flavor.objects.get(cpu=vcpus, ram=ram, |
205 |
disk=old_flavor.disk, |
206 |
disk_template=old_flavor.disk_template) |
207 |
except Flavor.DoesNotExist:
|
208 |
raise Exception("Can not find flavor for VM") |
209 |
vm.flavor = new_flavor |
210 |
vm.save() |
211 |
|
212 |
|
213 |
@transaction.commit_on_success
|
214 |
def process_net_status(vm, etime, nics): |
215 |
"""Wrap _process_net_status inside transaction."""
|
216 |
_process_net_status(vm, etime, nics) |
217 |
|
218 |
|
219 |
def _process_net_status(vm, etime, nics): |
220 |
"""Process a net status notification from the backend
|
221 |
|
222 |
Process an incoming message from the Ganeti backend,
|
223 |
detailing the NIC configuration of a VM instance.
|
224 |
|
225 |
Update the state of the VM in the DB accordingly.
|
226 |
|
227 |
"""
|
228 |
ganeti_nics = process_ganeti_nics(nics) |
229 |
db_nics = dict([(nic.id, nic) for nic in vm.nics.all()]) |
230 |
|
231 |
# Get X-Lock on backend before getting X-Lock on network IP pools, to
|
232 |
# guarantee that no deadlock will occur with Backend allocator.
|
233 |
Backend.objects.select_for_update().get(id=vm.backend_id) |
234 |
|
235 |
for nic_name in set(db_nics.keys()) | set(ganeti_nics.keys()): |
236 |
db_nic = db_nics.get(nic_name) |
237 |
ganeti_nic = ganeti_nics.get(nic_name) |
238 |
if ganeti_nic is None: |
239 |
# NIC exists in DB but not in Ganeti. If the NIC is in 'building'
|
240 |
# state for more than 5 minutes, then we remove the NIC.
|
241 |
# TODO: This is dangerous as the job may be stack in the queue, and
|
242 |
# releasing the IP may lead to duplicate IP use.
|
243 |
if nic.state != "BUILDING" or (nic.state == "BUILDING" and |
244 |
etime > nic.created + timedelta(minutes=5)):
|
245 |
release_nic_address(nic) |
246 |
nic.delete() |
247 |
else:
|
248 |
log.warning("Ignoring recent building NIC: %s", nic)
|
249 |
elif db_nic is None: |
250 |
# NIC exists in Ganeti but not in DB
|
251 |
if ganeti_nic["ipv4"]: |
252 |
network = ganeti_nic["network"]
|
253 |
network.reserve_address(ganeti_nic["ipv4"])
|
254 |
vm.nics.create(**ganeti_nic) |
255 |
elif not nics_are_equal(db_nic, ganeti_nic): |
256 |
# Special case where the IPv4 address has changed, because you
|
257 |
# need to release the old IPv4 address and reserve the new one
|
258 |
if db_nic.ipv4 != ganeti_nic["ipv4"]: |
259 |
release_nic_address(db_nic) |
260 |
if ganeti_nic["ipv4"]: |
261 |
ganeti_nic["network"].reserve_address(ganeti_nic["ipv4"]) |
262 |
|
263 |
# Update the NIC in DB with the values from Ganeti NIC
|
264 |
[setattr(db_nic, f, ganeti_nic[f]) for f in NIC_FIELDS] |
265 |
db_nic.save() |
266 |
|
267 |
# Dummy update the network, to work with 'changed-since'
|
268 |
db_nic.network.save() |
269 |
|
270 |
vm.backendtime = etime |
271 |
vm.save() |
272 |
|
273 |
|
274 |
def nics_are_equal(db_nic, gnt_nic): |
275 |
for field in NIC_FIELDS: |
276 |
if getattr(db_nic, field) != gnt_nic[field]: |
277 |
return False |
278 |
return True |
279 |
|
280 |
|
281 |
def process_ganeti_nics(ganeti_nics): |
282 |
"""Process NIC dict from ganeti"""
|
283 |
new_nics = [] |
284 |
for index, gnic in enumerate(ganeti_nics): |
285 |
nic_name = gnic.get("name", None) |
286 |
if nic_name is not None: |
287 |
nic_id = utils.id_from_nic_name(nic_name) |
288 |
else:
|
289 |
# Put as default value the index. If it is an unknown NIC to
|
290 |
# synnefo it will be created automaticaly.
|
291 |
nic_id = "unknown-" + str(index) |
292 |
network_name = gnic.get('network', '') |
293 |
network_id = utils.id_from_network_name(network_name) |
294 |
network = Network.objects.get(id=network_id) |
295 |
|
296 |
# Get the new nic info
|
297 |
mac = gnic.get('mac')
|
298 |
ipv4 = gnic.get('ip')
|
299 |
ipv6 = mac2eui64(mac, network.subnet6)\ |
300 |
if network.subnet6 is not None else None |
301 |
|
302 |
firewall = gnic.get('firewall')
|
303 |
firewall_profile = _reverse_tags.get(firewall) |
304 |
if not firewall_profile and network.public: |
305 |
firewall_profile = settings.DEFAULT_FIREWALL_PROFILE |
306 |
|
307 |
nic_info = { |
308 |
'index': index,
|
309 |
'network': network,
|
310 |
'mac': mac,
|
311 |
'ipv4': ipv4,
|
312 |
'ipv6': ipv6,
|
313 |
'firewall_profile': firewall_profile,
|
314 |
'state': 'ACTIVE'} |
315 |
|
316 |
new_nics.append((nic_id, nic_info)) |
317 |
return dict(new_nics) |
318 |
|
319 |
|
320 |
def release_nic_address(nic): |
321 |
"""Release the IPv4 address of a NIC.
|
322 |
|
323 |
Check if an instance's NIC has an IPv4 address and release it if it is not
|
324 |
a Floating IP.
|
325 |
|
326 |
"""
|
327 |
|
328 |
if nic.ipv4 and not nic.ip_type == "FLOATING": |
329 |
nic.network.release_address(nic.ipv4) |
330 |
|
331 |
|
332 |
@transaction.commit_on_success
|
333 |
def process_network_status(back_network, etime, jobid, opcode, status, logmsg): |
334 |
if status not in [x[0] for x in BACKEND_STATUSES]: |
335 |
raise Network.InvalidBackendMsgError(opcode, status)
|
336 |
|
337 |
back_network.backendjobid = jobid |
338 |
back_network.backendjobstatus = status |
339 |
back_network.backendopcode = opcode |
340 |
back_network.backendlogmsg = logmsg |
341 |
|
342 |
network = back_network.network |
343 |
|
344 |
# Notifications of success change the operating state
|
345 |
state_for_success = BackendNetwork.OPER_STATE_FROM_OPCODE.get(opcode, None)
|
346 |
if status == 'success' and state_for_success is not None: |
347 |
back_network.operstate = state_for_success |
348 |
|
349 |
if status in ('canceled', 'error') and opcode == 'OP_NETWORK_ADD': |
350 |
back_network.operstate = 'ERROR'
|
351 |
back_network.backendtime = etime |
352 |
|
353 |
if opcode == 'OP_NETWORK_REMOVE': |
354 |
network_is_deleted = (status == "success")
|
355 |
if network_is_deleted or (status == "error" and not |
356 |
network_exists_in_backend(back_network)): |
357 |
back_network.operstate = state_for_success |
358 |
back_network.deleted = True
|
359 |
back_network.backendtime = etime |
360 |
|
361 |
if status == 'success': |
362 |
back_network.backendtime = etime |
363 |
back_network.save() |
364 |
# Also you must update the state of the Network!!
|
365 |
update_network_state(network) |
366 |
|
367 |
|
368 |
def update_network_state(network): |
369 |
"""Update the state of a Network based on BackendNetwork states.
|
370 |
|
371 |
Update the state of a Network based on the operstate of the networks in the
|
372 |
backends that network exists.
|
373 |
|
374 |
The state of the network is:
|
375 |
* ACTIVE: If it is 'ACTIVE' in at least one backend.
|
376 |
* DELETED: If it is is 'DELETED' in all backends that have been created.
|
377 |
|
378 |
This function also releases the resources (MAC prefix or Bridge) and the
|
379 |
quotas for the network.
|
380 |
|
381 |
"""
|
382 |
if network.deleted:
|
383 |
# Network has already been deleted. Just assert that state is also
|
384 |
# DELETED
|
385 |
if not network.state == "DELETED": |
386 |
network.state = "DELETED"
|
387 |
network.save() |
388 |
return
|
389 |
|
390 |
backend_states = [s.operstate for s in network.backend_networks.all()] |
391 |
if not backend_states and network.action != "DESTROY": |
392 |
if network.state != "ACTIVE": |
393 |
network.state = "ACTIVE"
|
394 |
network.save() |
395 |
return
|
396 |
|
397 |
# Network is deleted when all BackendNetworks go to "DELETED" operstate
|
398 |
deleted = reduce(lambda x, y: x == y and "DELETED", backend_states, |
399 |
"DELETED")
|
400 |
|
401 |
# Release the resources on the deletion of the Network
|
402 |
if deleted:
|
403 |
log.info("Network %r deleted. Releasing link %r mac_prefix %r",
|
404 |
network.id, network.mac_prefix, network.link) |
405 |
network.deleted = True
|
406 |
network.state = "DELETED"
|
407 |
if network.mac_prefix:
|
408 |
if network.FLAVORS[network.flavor]["mac_prefix"] == "pool": |
409 |
release_resource(res_type="mac_prefix",
|
410 |
value=network.mac_prefix) |
411 |
if network.link:
|
412 |
if network.FLAVORS[network.flavor]["link"] == "pool": |
413 |
release_resource(res_type="bridge", value=network.link)
|
414 |
|
415 |
# Issue commission
|
416 |
if network.userid:
|
417 |
quotas.issue_and_accept_commission(network, delete=True)
|
418 |
# the above has already saved the object and committed;
|
419 |
# a second save would override others' changes, since the
|
420 |
# object is now unlocked
|
421 |
return
|
422 |
elif not network.public: |
423 |
log.warning("Network %s does not have an owner!", network.id)
|
424 |
network.save() |
425 |
|
426 |
|
427 |
@transaction.commit_on_success
|
428 |
def process_network_modify(back_network, etime, jobid, opcode, status, |
429 |
job_fields): |
430 |
assert (opcode == "OP_NETWORK_SET_PARAMS") |
431 |
if status not in [x[0] for x in BACKEND_STATUSES]: |
432 |
raise Network.InvalidBackendMsgError(opcode, status)
|
433 |
|
434 |
back_network.backendjobid = jobid |
435 |
back_network.backendjobstatus = status |
436 |
back_network.opcode = opcode |
437 |
|
438 |
add_reserved_ips = job_fields.get("add_reserved_ips")
|
439 |
if add_reserved_ips:
|
440 |
net = back_network.network |
441 |
pool = net.get_pool() |
442 |
if add_reserved_ips:
|
443 |
for ip in add_reserved_ips: |
444 |
pool.reserve(ip, external=True)
|
445 |
pool.save() |
446 |
|
447 |
if status == 'success': |
448 |
back_network.backendtime = etime |
449 |
back_network.save() |
450 |
|
451 |
|
452 |
@transaction.commit_on_success
|
453 |
def process_create_progress(vm, etime, progress): |
454 |
|
455 |
percentage = int(progress)
|
456 |
|
457 |
# The percentage may exceed 100%, due to the way
|
458 |
# snf-image:copy-progress tracks bytes read by image handling processes
|
459 |
percentage = 100 if percentage > 100 else percentage |
460 |
if percentage < 0: |
461 |
raise ValueError("Percentage cannot be negative") |
462 |
|
463 |
# FIXME: log a warning here, see #1033
|
464 |
# if last_update > percentage:
|
465 |
# raise ValueError("Build percentage should increase monotonically " \
|
466 |
# "(old = %d, new = %d)" % (last_update, percentage))
|
467 |
|
468 |
# This assumes that no message of type 'ganeti-create-progress' is going to
|
469 |
# arrive once OP_INSTANCE_CREATE has succeeded for a Ganeti instance and
|
470 |
# the instance is STARTED. What if the two messages are processed by two
|
471 |
# separate dispatcher threads, and the 'ganeti-op-status' message for
|
472 |
# successful creation gets processed before the 'ganeti-create-progress'
|
473 |
# message? [vkoukis]
|
474 |
#
|
475 |
#if not vm.operstate == 'BUILD':
|
476 |
# raise VirtualMachine.IllegalState("VM is not in building state")
|
477 |
|
478 |
vm.buildpercentage = percentage |
479 |
vm.backendtime = etime |
480 |
vm.save() |
481 |
|
482 |
|
483 |
@transaction.commit_on_success
|
484 |
def create_instance_diagnostic(vm, message, source, level="DEBUG", etime=None, |
485 |
details=None):
|
486 |
"""
|
487 |
Create virtual machine instance diagnostic entry.
|
488 |
|
489 |
:param vm: VirtualMachine instance to create diagnostic for.
|
490 |
:param message: Diagnostic message.
|
491 |
:param source: Diagnostic source identifier (e.g. image-helper).
|
492 |
:param level: Diagnostic level (`DEBUG`, `INFO`, `WARNING`, `ERROR`).
|
493 |
:param etime: The time the message occured (if available).
|
494 |
:param details: Additional details or debug information.
|
495 |
"""
|
496 |
VirtualMachineDiagnostic.objects.create_for_vm(vm, level, source=source, |
497 |
source_date=etime, |
498 |
message=message, |
499 |
details=details) |
500 |
|
501 |
|
502 |
def create_instance(vm, nics, flavor, image): |
503 |
"""`image` is a dictionary which should contain the keys:
|
504 |
'backend_id', 'format' and 'metadata'
|
505 |
|
506 |
metadata value should be a dictionary.
|
507 |
"""
|
508 |
|
509 |
# Handle arguments to CreateInstance() as a dictionary,
|
510 |
# initialize it based on a deployment-specific value.
|
511 |
# This enables the administrator to override deployment-specific
|
512 |
# arguments, such as the disk template to use, name of os provider
|
513 |
# and hypervisor-specific parameters at will (see Synnefo #785, #835).
|
514 |
#
|
515 |
kw = vm.backend.get_create_params() |
516 |
kw['mode'] = 'create' |
517 |
kw['name'] = vm.backend_vm_id
|
518 |
# Defined in settings.GANETI_CREATEINSTANCE_KWARGS
|
519 |
|
520 |
kw['disk_template'] = flavor.disk_template
|
521 |
kw['disks'] = [{"size": flavor.disk * 1024}] |
522 |
provider = flavor.disk_provider |
523 |
if provider:
|
524 |
kw['disks'][0]['provider'] = provider |
525 |
kw['disks'][0]['origin'] = flavor.disk_origin |
526 |
|
527 |
kw['nics'] = [{"name": nic.backend_uuid, |
528 |
"network": nic.network.backend_id,
|
529 |
"ip": nic.ipv4}
|
530 |
for nic in nics] |
531 |
backend = vm.backend |
532 |
depend_jobs = [] |
533 |
for nic in nics: |
534 |
network = Network.objects.select_for_update().get(id=nic.network.id) |
535 |
bnet, created = BackendNetwork.objects.get_or_create(backend=backend, |
536 |
network=network) |
537 |
if bnet.operstate != "ACTIVE": |
538 |
if network.public:
|
539 |
msg = "Can not connect instance to network %s. Network is not"\
|
540 |
" ACTIVE in backend %s." % (network, backend)
|
541 |
raise Exception(msg) |
542 |
else:
|
543 |
jobs = create_network(network, backend, connect=True)
|
544 |
if isinstance(jobs, list): |
545 |
depend_jobs.extend(jobs) |
546 |
else:
|
547 |
depend_jobs.append(jobs) |
548 |
kw["depends"] = [[job, ["success", "error", "canceled"]] |
549 |
for job in depend_jobs] |
550 |
|
551 |
# Defined in settings.GANETI_CREATEINSTANCE_KWARGS
|
552 |
# kw['os'] = settings.GANETI_OS_PROVIDER
|
553 |
kw['ip_check'] = False |
554 |
kw['name_check'] = False |
555 |
|
556 |
# Do not specific a node explicitly, have
|
557 |
# Ganeti use an iallocator instead
|
558 |
#kw['pnode'] = rapi.GetNodes()[0]
|
559 |
|
560 |
kw['dry_run'] = settings.TEST
|
561 |
|
562 |
kw['beparams'] = {
|
563 |
'auto_balance': True, |
564 |
'vcpus': flavor.cpu,
|
565 |
'memory': flavor.ram}
|
566 |
|
567 |
kw['osparams'] = {
|
568 |
'config_url': vm.config_url,
|
569 |
# Store image id and format to Ganeti
|
570 |
'img_id': image['backend_id'], |
571 |
'img_format': image['format']} |
572 |
|
573 |
# Use opportunistic locking
|
574 |
kw['opportunistic_locking'] = True |
575 |
|
576 |
# Defined in settings.GANETI_CREATEINSTANCE_KWARGS
|
577 |
# kw['hvparams'] = dict(serial_console=False)
|
578 |
|
579 |
log.debug("Creating instance %s", utils.hide_pass(kw))
|
580 |
with pooled_rapi_client(vm) as client: |
581 |
return client.CreateInstance(**kw)
|
582 |
|
583 |
|
584 |
def delete_instance(vm): |
585 |
with pooled_rapi_client(vm) as client: |
586 |
return client.DeleteInstance(vm.backend_vm_id, dry_run=settings.TEST)
|
587 |
|
588 |
|
589 |
def reboot_instance(vm, reboot_type): |
590 |
assert reboot_type in ('soft', 'hard') |
591 |
kwargs = {"instance": vm.backend_vm_id,
|
592 |
"reboot_type": "hard"} |
593 |
# XXX: Currently shutdown_timeout parameter is not supported from the
|
594 |
# Ganeti RAPI. Until supported, we will fallback for both reboot types
|
595 |
# to the default shutdown timeout of Ganeti (120s). Note that reboot
|
596 |
# type of Ganeti job must be always hard. The 'soft' and 'hard' type
|
597 |
# of OS API is different from the one in Ganeti, and maps to
|
598 |
# 'shutdown_timeout'.
|
599 |
#if reboot_type == "hard":
|
600 |
# kwargs["shutdown_timeout"] = 0
|
601 |
if settings.TEST:
|
602 |
kwargs["dry_run"] = True |
603 |
with pooled_rapi_client(vm) as client: |
604 |
return client.RebootInstance(**kwargs)
|
605 |
|
606 |
|
607 |
def startup_instance(vm): |
608 |
with pooled_rapi_client(vm) as client: |
609 |
return client.StartupInstance(vm.backend_vm_id, dry_run=settings.TEST)
|
610 |
|
611 |
|
612 |
def shutdown_instance(vm): |
613 |
with pooled_rapi_client(vm) as client: |
614 |
return client.ShutdownInstance(vm.backend_vm_id, dry_run=settings.TEST)
|
615 |
|
616 |
|
617 |
def resize_instance(vm, vcpus, memory): |
618 |
beparams = {"vcpus": int(vcpus), |
619 |
"minmem": int(memory), |
620 |
"maxmem": int(memory)} |
621 |
with pooled_rapi_client(vm) as client: |
622 |
return client.ModifyInstance(vm.backend_vm_id, beparams=beparams)
|
623 |
|
624 |
|
625 |
def get_instance_console(vm): |
626 |
# RAPI GetInstanceConsole() returns endpoints to the vnc_bind_address,
|
627 |
# which is a cluster-wide setting, either 0.0.0.0 or 127.0.0.1, and pretty
|
628 |
# useless (see #783).
|
629 |
#
|
630 |
# Until this is fixed on the Ganeti side, construct a console info reply
|
631 |
# directly.
|
632 |
#
|
633 |
# WARNING: This assumes that VNC runs on port network_port on
|
634 |
# the instance's primary node, and is probably
|
635 |
# hypervisor-specific.
|
636 |
#
|
637 |
log.debug("Getting console for vm %s", vm)
|
638 |
|
639 |
console = {} |
640 |
console['kind'] = 'vnc' |
641 |
|
642 |
with pooled_rapi_client(vm) as client: |
643 |
i = client.GetInstance(vm.backend_vm_id) |
644 |
|
645 |
if vm.backend.hypervisor == "kvm" and i['hvparams']['serial_console']: |
646 |
raise Exception("hv parameter serial_console cannot be true") |
647 |
console['host'] = i['pnode'] |
648 |
console['port'] = i['network_port'] |
649 |
|
650 |
return console
|
651 |
|
652 |
|
653 |
def get_instance_info(vm): |
654 |
with pooled_rapi_client(vm) as client: |
655 |
return client.GetInstance(vm.backend_vm_id)
|
656 |
|
657 |
|
658 |
def vm_exists_in_backend(vm): |
659 |
try:
|
660 |
get_instance_info(vm) |
661 |
return True |
662 |
except GanetiApiError as e: |
663 |
if e.code == 404: |
664 |
return False |
665 |
raise e
|
666 |
|
667 |
|
668 |
def get_network_info(backend_network): |
669 |
with pooled_rapi_client(backend_network) as client: |
670 |
return client.GetNetwork(backend_network.network.backend_id)
|
671 |
|
672 |
|
673 |
def network_exists_in_backend(backend_network): |
674 |
try:
|
675 |
get_network_info(backend_network) |
676 |
return True |
677 |
except GanetiApiError as e: |
678 |
if e.code == 404: |
679 |
return False |
680 |
|
681 |
|
682 |
def create_network(network, backend, connect=True): |
683 |
"""Create a network in a Ganeti backend"""
|
684 |
log.debug("Creating network %s in backend %s", network, backend)
|
685 |
|
686 |
job_id = _create_network(network, backend) |
687 |
|
688 |
if connect:
|
689 |
job_ids = connect_network(network, backend, depends=[job_id]) |
690 |
return job_ids
|
691 |
else:
|
692 |
return [job_id]
|
693 |
|
694 |
|
695 |
def _create_network(network, backend): |
696 |
"""Create a network."""
|
697 |
|
698 |
tags = network.backend_tag |
699 |
if network.dhcp:
|
700 |
tags.append('nfdhcpd')
|
701 |
|
702 |
if network.public:
|
703 |
conflicts_check = True
|
704 |
tags.append('public')
|
705 |
else:
|
706 |
conflicts_check = False
|
707 |
tags.append('private')
|
708 |
|
709 |
# Use a dummy network subnet for IPv6 only networks. Currently Ganeti does
|
710 |
# not support IPv6 only networks. To bypass this limitation, we create the
|
711 |
# network with a dummy network subnet, and make Cyclades connect instances
|
712 |
# to such networks, with address=None.
|
713 |
subnet = network.subnet |
714 |
if subnet is None: |
715 |
subnet = "10.0.0.0/24"
|
716 |
|
717 |
try:
|
718 |
bn = BackendNetwork.objects.get(network=network, backend=backend) |
719 |
mac_prefix = bn.mac_prefix |
720 |
except BackendNetwork.DoesNotExist:
|
721 |
raise Exception("BackendNetwork for network '%s' in backend '%s'" |
722 |
" does not exist" % (network.id, backend.id))
|
723 |
|
724 |
with pooled_rapi_client(backend) as client: |
725 |
return client.CreateNetwork(network_name=network.backend_id,
|
726 |
network=subnet, |
727 |
network6=network.subnet6, |
728 |
gateway=network.gateway, |
729 |
gateway6=network.gateway6, |
730 |
mac_prefix=mac_prefix, |
731 |
conflicts_check=conflicts_check, |
732 |
tags=tags) |
733 |
|
734 |
|
735 |
def connect_network(network, backend, depends=[], group=None): |
736 |
"""Connect a network to nodegroups."""
|
737 |
log.debug("Connecting network %s to backend %s", network, backend)
|
738 |
|
739 |
if network.public:
|
740 |
conflicts_check = True
|
741 |
else:
|
742 |
conflicts_check = False
|
743 |
|
744 |
depends = [[job, ["success", "error", "canceled"]] for job in depends] |
745 |
with pooled_rapi_client(backend) as client: |
746 |
groups = [group] if group is not None else client.GetGroups() |
747 |
job_ids = [] |
748 |
for group in groups: |
749 |
job_id = client.ConnectNetwork(network.backend_id, group, |
750 |
network.mode, network.link, |
751 |
conflicts_check, |
752 |
depends=depends) |
753 |
job_ids.append(job_id) |
754 |
return job_ids
|
755 |
|
756 |
|
757 |
def delete_network(network, backend, disconnect=True): |
758 |
log.debug("Deleting network %s from backend %s", network, backend)
|
759 |
|
760 |
depends = [] |
761 |
if disconnect:
|
762 |
depends = disconnect_network(network, backend) |
763 |
_delete_network(network, backend, depends=depends) |
764 |
|
765 |
|
766 |
def _delete_network(network, backend, depends=[]): |
767 |
depends = [[job, ["success", "error", "canceled"]] for job in depends] |
768 |
with pooled_rapi_client(backend) as client: |
769 |
return client.DeleteNetwork(network.backend_id, depends)
|
770 |
|
771 |
|
772 |
def disconnect_network(network, backend, group=None): |
773 |
log.debug("Disconnecting network %s to backend %s", network, backend)
|
774 |
|
775 |
with pooled_rapi_client(backend) as client: |
776 |
groups = [group] if group is not None else client.GetGroups() |
777 |
job_ids = [] |
778 |
for group in groups: |
779 |
job_id = client.DisconnectNetwork(network.backend_id, group) |
780 |
job_ids.append(job_id) |
781 |
return job_ids
|
782 |
|
783 |
|
784 |
def connect_to_network(vm, nic): |
785 |
network = nic.network |
786 |
backend = vm.backend |
787 |
network = Network.objects.select_for_update().get(id=network.id) |
788 |
bnet, created = BackendNetwork.objects.get_or_create(backend=backend, |
789 |
network=network) |
790 |
depend_jobs = [] |
791 |
if bnet.operstate != "ACTIVE": |
792 |
depend_jobs = create_network(network, backend, connect=True)
|
793 |
|
794 |
depends = [[job, ["success", "error", "canceled"]] for job in depend_jobs] |
795 |
|
796 |
nic = {'name': nic.backend_uuid,
|
797 |
'network': network.backend_id,
|
798 |
'ip': nic.ipv4}
|
799 |
|
800 |
log.debug("Adding NIC %s to VM %s", nic, vm)
|
801 |
|
802 |
kwargs = { |
803 |
"instance": vm.backend_vm_id,
|
804 |
"nics": [("add", "-1", nic)], |
805 |
"depends": depends,
|
806 |
} |
807 |
if vm.backend.use_hotplug():
|
808 |
kwargs["hotplug"] = True |
809 |
if settings.TEST:
|
810 |
kwargs["dry_run"] = True |
811 |
|
812 |
with pooled_rapi_client(vm) as client: |
813 |
return client.ModifyInstance(**kwargs)
|
814 |
|
815 |
|
816 |
def disconnect_from_network(vm, nic): |
817 |
log.debug("Removing NIC %s of VM %s", nic, vm)
|
818 |
|
819 |
kwargs = { |
820 |
"instance": vm.backend_vm_id,
|
821 |
"nics": [("remove", nic.index, {})], |
822 |
} |
823 |
if vm.backend.use_hotplug():
|
824 |
kwargs["hotplug"] = True |
825 |
if settings.TEST:
|
826 |
kwargs["dry_run"] = True |
827 |
|
828 |
with pooled_rapi_client(vm) as client: |
829 |
jobID = client.ModifyInstance(**kwargs) |
830 |
# If the NIC has a tag for a firewall profile it must be deleted,
|
831 |
# otherwise it may affect another NIC. XXX: Deleting the tag should
|
832 |
# depend on the removing the NIC, but currently RAPI client does not
|
833 |
# support this, this may result in clearing the firewall profile
|
834 |
# without successfully removing the NIC. This issue will be fixed with
|
835 |
# use of NIC UUIDs.
|
836 |
firewall_profile = nic.firewall_profile |
837 |
if firewall_profile and firewall_profile != "DISABLED": |
838 |
tag = _firewall_tags[firewall_profile] % nic.index |
839 |
client.DeleteInstanceTags(vm.backend_vm_id, [tag], |
840 |
dry_run=settings.TEST) |
841 |
|
842 |
return jobID
|
843 |
|
844 |
|
845 |
def set_firewall_profile(vm, profile, index=0): |
846 |
try:
|
847 |
tag = _firewall_tags[profile] % index |
848 |
except KeyError: |
849 |
raise ValueError("Unsopported Firewall Profile: %s" % profile) |
850 |
|
851 |
log.debug("Setting tag of VM %s, NIC index %d, to %s", vm, index, profile)
|
852 |
|
853 |
with pooled_rapi_client(vm) as client: |
854 |
# Delete previous firewall tags
|
855 |
old_tags = client.GetInstanceTags(vm.backend_vm_id) |
856 |
delete_tags = [(t % index) for t in _firewall_tags.values() |
857 |
if (t % index) in old_tags] |
858 |
if delete_tags:
|
859 |
client.DeleteInstanceTags(vm.backend_vm_id, delete_tags, |
860 |
dry_run=settings.TEST) |
861 |
|
862 |
if profile != "DISABLED": |
863 |
client.AddInstanceTags(vm.backend_vm_id, [tag], |
864 |
dry_run=settings.TEST) |
865 |
|
866 |
# XXX NOP ModifyInstance call to force process_net_status to run
|
867 |
# on the dispatcher
|
868 |
os_name = settings.GANETI_CREATEINSTANCE_KWARGS['os']
|
869 |
client.ModifyInstance(vm.backend_vm_id, |
870 |
os_name=os_name) |
871 |
return None |
872 |
|
873 |
|
874 |
def get_instances(backend, bulk=True): |
875 |
with pooled_rapi_client(backend) as c: |
876 |
return c.GetInstances(bulk=bulk)
|
877 |
|
878 |
|
879 |
def get_nodes(backend, bulk=True): |
880 |
with pooled_rapi_client(backend) as c: |
881 |
return c.GetNodes(bulk=bulk)
|
882 |
|
883 |
|
884 |
def get_jobs(backend, bulk=True): |
885 |
with pooled_rapi_client(backend) as c: |
886 |
return c.GetJobs(bulk=bulk)
|
887 |
|
888 |
|
889 |
def get_physical_resources(backend): |
890 |
""" Get the physical resources of a backend.
|
891 |
|
892 |
Get the resources of a backend as reported by the backend (not the db).
|
893 |
|
894 |
"""
|
895 |
nodes = get_nodes(backend, bulk=True)
|
896 |
attr = ['mfree', 'mtotal', 'dfree', 'dtotal', 'pinst_cnt', 'ctotal'] |
897 |
res = {} |
898 |
for a in attr: |
899 |
res[a] = 0
|
900 |
for n in nodes: |
901 |
# Filter out drained, offline and not vm_capable nodes since they will
|
902 |
# not take part in the vm allocation process
|
903 |
can_host_vms = n['vm_capable'] and not (n['drained'] or n['offline']) |
904 |
if can_host_vms and n['cnodes']: |
905 |
for a in attr: |
906 |
res[a] += int(n[a])
|
907 |
return res
|
908 |
|
909 |
|
910 |
def update_backend_resources(backend, resources=None): |
911 |
""" Update the state of the backend resources in db.
|
912 |
|
913 |
"""
|
914 |
|
915 |
if not resources: |
916 |
resources = get_physical_resources(backend) |
917 |
|
918 |
backend.mfree = resources['mfree']
|
919 |
backend.mtotal = resources['mtotal']
|
920 |
backend.dfree = resources['dfree']
|
921 |
backend.dtotal = resources['dtotal']
|
922 |
backend.pinst_cnt = resources['pinst_cnt']
|
923 |
backend.ctotal = resources['ctotal']
|
924 |
backend.updated = datetime.now() |
925 |
backend.save() |
926 |
|
927 |
|
928 |
def get_memory_from_instances(backend): |
929 |
""" Get the memory that is used from instances.
|
930 |
|
931 |
Get the used memory of a backend. Note: This is different for
|
932 |
the real memory used, due to kvm's memory de-duplication.
|
933 |
|
934 |
"""
|
935 |
with pooled_rapi_client(backend) as client: |
936 |
instances = client.GetInstances(bulk=True)
|
937 |
mem = 0
|
938 |
for i in instances: |
939 |
mem += i['oper_ram']
|
940 |
return mem
|
941 |
|
942 |
|
943 |
def get_available_disk_templates(backend): |
944 |
"""Get the list of available disk templates of a Ganeti backend.
|
945 |
|
946 |
The list contains the disk templates that are enabled in the Ganeti backend
|
947 |
and also included in ipolicy-disk-templates.
|
948 |
|
949 |
"""
|
950 |
with pooled_rapi_client(backend) as c: |
951 |
info = c.GetInfo() |
952 |
ipolicy_disk_templates = info["ipolicy"]["disk-templates"] |
953 |
try:
|
954 |
enabled_disk_templates = info["enabled_disk_templates"]
|
955 |
return [dp for dp in enabled_disk_templates |
956 |
if dp in ipolicy_disk_templates] |
957 |
except KeyError: |
958 |
# Ganeti < 2.8 does not have 'enabled_disk_templates'
|
959 |
return ipolicy_disk_templates
|
960 |
|
961 |
|
962 |
def update_backend_disk_templates(backend): |
963 |
disk_templates = get_available_disk_templates(backend) |
964 |
backend.disk_templates = disk_templates |
965 |
backend.save() |
966 |
|
967 |
|
968 |
##
|
969 |
## Synchronized operations for reconciliation
|
970 |
##
|
971 |
|
972 |
|
973 |
def create_network_synced(network, backend): |
974 |
result = _create_network_synced(network, backend) |
975 |
if result[0] != 'success': |
976 |
return result
|
977 |
result = connect_network_synced(network, backend) |
978 |
return result
|
979 |
|
980 |
|
981 |
def _create_network_synced(network, backend): |
982 |
with pooled_rapi_client(backend) as client: |
983 |
job = _create_network(network, backend) |
984 |
result = wait_for_job(client, job) |
985 |
return result
|
986 |
|
987 |
|
988 |
def connect_network_synced(network, backend): |
989 |
with pooled_rapi_client(backend) as client: |
990 |
for group in client.GetGroups(): |
991 |
job = client.ConnectNetwork(network.backend_id, group, |
992 |
network.mode, network.link) |
993 |
result = wait_for_job(client, job) |
994 |
if result[0] != 'success': |
995 |
return result
|
996 |
|
997 |
return result
|
998 |
|
999 |
|
1000 |
def wait_for_job(client, jobid): |
1001 |
result = client.WaitForJobChange(jobid, ['status', 'opresult'], None, None) |
1002 |
status = result['job_info'][0] |
1003 |
while status not in ['success', 'error', 'cancel']: |
1004 |
result = client.WaitForJobChange(jobid, ['status', 'opresult'], |
1005 |
[result], None)
|
1006 |
status = result['job_info'][0] |
1007 |
|
1008 |
if status == 'success': |
1009 |
return (status, None) |
1010 |
else:
|
1011 |
error = result['job_info'][1] |
1012 |
return (status, error)
|