root / lib / cmdlib / network.py @ 1c4910f7
History | View | Annotate | Download (18.7 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Google Inc.
|
5 |
#
|
6 |
# This program is free software; you can redistribute it and/or modify
|
7 |
# it under the terms of the GNU General Public License as published by
|
8 |
# the Free Software Foundation; either version 2 of the License, or
|
9 |
# (at your option) any later version.
|
10 |
#
|
11 |
# This program is distributed in the hope that it will be useful, but
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
# General Public License for more details.
|
15 |
#
|
16 |
# You should have received a copy of the GNU General Public License
|
17 |
# along with this program; if not, write to the Free Software
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
# 02110-1301, USA.
|
20 |
|
21 |
|
22 |
"""Logical units dealing with networks."""
|
23 |
|
24 |
from ganeti import constants |
25 |
from ganeti import errors |
26 |
from ganeti import locking |
27 |
from ganeti import network |
28 |
from ganeti import objects |
29 |
from ganeti import utils |
30 |
from ganeti.cmdlib.base import LogicalUnit |
31 |
from ganeti.cmdlib.common import CheckNodeGroupInstances |
32 |
|
33 |
|
34 |
def _BuildNetworkHookEnv(name, subnet, gateway, network6, gateway6, |
35 |
mac_prefix, tags): |
36 |
"""Builds network related env variables for hooks
|
37 |
|
38 |
This builds the hook environment from individual variables.
|
39 |
|
40 |
@type name: string
|
41 |
@param name: the name of the network
|
42 |
@type subnet: string
|
43 |
@param subnet: the ipv4 subnet
|
44 |
@type gateway: string
|
45 |
@param gateway: the ipv4 gateway
|
46 |
@type network6: string
|
47 |
@param network6: the ipv6 subnet
|
48 |
@type gateway6: string
|
49 |
@param gateway6: the ipv6 gateway
|
50 |
@type mac_prefix: string
|
51 |
@param mac_prefix: the mac_prefix
|
52 |
@type tags: list
|
53 |
@param tags: the tags of the network
|
54 |
|
55 |
"""
|
56 |
env = {} |
57 |
if name:
|
58 |
env["NETWORK_NAME"] = name
|
59 |
if subnet:
|
60 |
env["NETWORK_SUBNET"] = subnet
|
61 |
if gateway:
|
62 |
env["NETWORK_GATEWAY"] = gateway
|
63 |
if network6:
|
64 |
env["NETWORK_SUBNET6"] = network6
|
65 |
if gateway6:
|
66 |
env["NETWORK_GATEWAY6"] = gateway6
|
67 |
if mac_prefix:
|
68 |
env["NETWORK_MAC_PREFIX"] = mac_prefix
|
69 |
if tags:
|
70 |
env["NETWORK_TAGS"] = " ".join(tags) |
71 |
|
72 |
return env
|
73 |
|
74 |
|
75 |
class LUNetworkAdd(LogicalUnit): |
76 |
"""Logical unit for creating networks.
|
77 |
|
78 |
"""
|
79 |
HPATH = "network-add"
|
80 |
HTYPE = constants.HTYPE_NETWORK |
81 |
REQ_BGL = False
|
82 |
|
83 |
def BuildHooksNodes(self): |
84 |
"""Build hooks nodes.
|
85 |
|
86 |
"""
|
87 |
mn = self.cfg.GetMasterNode()
|
88 |
return ([mn], [mn])
|
89 |
|
90 |
def CheckArguments(self): |
91 |
if self.op.mac_prefix: |
92 |
self.op.mac_prefix = \
|
93 |
utils.NormalizeAndValidateThreeOctetMacPrefix(self.op.mac_prefix)
|
94 |
|
95 |
def ExpandNames(self): |
96 |
self.network_uuid = self.cfg.GenerateUniqueID(self.proc.GetECId()) |
97 |
|
98 |
if self.op.conflicts_check: |
99 |
self.share_locks[locking.LEVEL_NODE] = 1 |
100 |
self.share_locks[locking.LEVEL_NODE_ALLOC] = 1 |
101 |
self.needed_locks = {
|
102 |
locking.LEVEL_NODE: locking.ALL_SET, |
103 |
locking.LEVEL_NODE_ALLOC: locking.ALL_SET, |
104 |
} |
105 |
else:
|
106 |
self.needed_locks = {}
|
107 |
|
108 |
self.add_locks[locking.LEVEL_NETWORK] = self.network_uuid |
109 |
|
110 |
def CheckPrereq(self): |
111 |
if self.op.network is None: |
112 |
raise errors.OpPrereqError("Network must be given", |
113 |
errors.ECODE_INVAL) |
114 |
|
115 |
try:
|
116 |
existing_uuid = self.cfg.LookupNetwork(self.op.network_name) |
117 |
except errors.OpPrereqError:
|
118 |
pass
|
119 |
else:
|
120 |
raise errors.OpPrereqError("Desired network name '%s' already exists as a" |
121 |
" network (UUID: %s)" %
|
122 |
(self.op.network_name, existing_uuid),
|
123 |
errors.ECODE_EXISTS) |
124 |
|
125 |
# Check tag validity
|
126 |
for tag in self.op.tags: |
127 |
objects.TaggableObject.ValidateTag(tag) |
128 |
|
129 |
def BuildHooksEnv(self): |
130 |
"""Build hooks env.
|
131 |
|
132 |
"""
|
133 |
args = { |
134 |
"name": self.op.network_name, |
135 |
"subnet": self.op.network, |
136 |
"gateway": self.op.gateway, |
137 |
"network6": self.op.network6, |
138 |
"gateway6": self.op.gateway6, |
139 |
"mac_prefix": self.op.mac_prefix, |
140 |
"tags": self.op.tags, |
141 |
} |
142 |
return _BuildNetworkHookEnv(**args) # pylint: disable=W0142 |
143 |
|
144 |
def Exec(self, feedback_fn): |
145 |
"""Add the ip pool to the cluster.
|
146 |
|
147 |
"""
|
148 |
nobj = objects.Network(name=self.op.network_name,
|
149 |
network=self.op.network,
|
150 |
gateway=self.op.gateway,
|
151 |
network6=self.op.network6,
|
152 |
gateway6=self.op.gateway6,
|
153 |
mac_prefix=self.op.mac_prefix,
|
154 |
uuid=self.network_uuid)
|
155 |
# Initialize the associated address pool
|
156 |
try:
|
157 |
pool = network.AddressPool.InitializeNetwork(nobj) |
158 |
except errors.AddressPoolError, err:
|
159 |
raise errors.OpExecError("Cannot create IP address pool for network" |
160 |
" '%s': %s" % (self.op.network_name, err)) |
161 |
|
162 |
# Check if we need to reserve the nodes and the cluster master IP
|
163 |
# These may not be allocated to any instances in routed mode, as
|
164 |
# they wouldn't function anyway.
|
165 |
if self.op.conflicts_check: |
166 |
for node in self.cfg.GetAllNodesInfo().values(): |
167 |
for ip in [node.primary_ip, node.secondary_ip]: |
168 |
try:
|
169 |
if pool.Contains(ip):
|
170 |
pool.Reserve(ip, external=True)
|
171 |
self.LogInfo("Reserved IP address of node '%s' (%s)", |
172 |
node.name, ip) |
173 |
except errors.AddressPoolError, err:
|
174 |
self.LogWarning("Cannot reserve IP address '%s' of node '%s': %s", |
175 |
ip, node.name, err) |
176 |
|
177 |
master_ip = self.cfg.GetClusterInfo().master_ip
|
178 |
try:
|
179 |
if pool.Contains(master_ip):
|
180 |
pool.Reserve(master_ip, external=True)
|
181 |
self.LogInfo("Reserved cluster master IP address (%s)", master_ip) |
182 |
except errors.AddressPoolError, err:
|
183 |
self.LogWarning("Cannot reserve cluster master IP address (%s): %s", |
184 |
master_ip, err) |
185 |
|
186 |
if self.op.add_reserved_ips: |
187 |
for ip in self.op.add_reserved_ips: |
188 |
try:
|
189 |
pool.Reserve(ip, external=True)
|
190 |
except errors.AddressPoolError, err:
|
191 |
raise errors.OpExecError("Cannot reserve IP address '%s': %s" % |
192 |
(ip, err)) |
193 |
|
194 |
if self.op.tags: |
195 |
for tag in self.op.tags: |
196 |
nobj.AddTag(tag) |
197 |
|
198 |
self.cfg.AddNetwork(nobj, self.proc.GetECId(), check_uuid=False) |
199 |
del self.remove_locks[locking.LEVEL_NETWORK] |
200 |
|
201 |
|
202 |
class LUNetworkRemove(LogicalUnit): |
203 |
HPATH = "network-remove"
|
204 |
HTYPE = constants.HTYPE_NETWORK |
205 |
REQ_BGL = False
|
206 |
|
207 |
def ExpandNames(self): |
208 |
self.network_uuid = self.cfg.LookupNetwork(self.op.network_name) |
209 |
|
210 |
self.share_locks[locking.LEVEL_NODEGROUP] = 1 |
211 |
self.needed_locks = {
|
212 |
locking.LEVEL_NETWORK: [self.network_uuid],
|
213 |
locking.LEVEL_NODEGROUP: locking.ALL_SET, |
214 |
} |
215 |
|
216 |
def CheckPrereq(self): |
217 |
"""Check prerequisites.
|
218 |
|
219 |
This checks that the given network name exists as a network, that is
|
220 |
empty (i.e., contains no nodes), and that is not the last group of the
|
221 |
cluster.
|
222 |
|
223 |
"""
|
224 |
# Verify that the network is not conncted.
|
225 |
node_groups = [group.name |
226 |
for group in self.cfg.GetAllNodeGroupsInfo().values() |
227 |
if self.network_uuid in group.networks] |
228 |
|
229 |
if node_groups:
|
230 |
self.LogWarning("Network '%s' is connected to the following" |
231 |
" node groups: %s" %
|
232 |
(self.op.network_name,
|
233 |
utils.CommaJoin(utils.NiceSort(node_groups)))) |
234 |
raise errors.OpPrereqError("Network still connected", errors.ECODE_STATE) |
235 |
|
236 |
def BuildHooksEnv(self): |
237 |
"""Build hooks env.
|
238 |
|
239 |
"""
|
240 |
return {
|
241 |
"NETWORK_NAME": self.op.network_name, |
242 |
} |
243 |
|
244 |
def BuildHooksNodes(self): |
245 |
"""Build hooks nodes.
|
246 |
|
247 |
"""
|
248 |
mn = self.cfg.GetMasterNode()
|
249 |
return ([mn], [mn])
|
250 |
|
251 |
def Exec(self, feedback_fn): |
252 |
"""Remove the network.
|
253 |
|
254 |
"""
|
255 |
try:
|
256 |
self.cfg.RemoveNetwork(self.network_uuid) |
257 |
except errors.ConfigurationError:
|
258 |
raise errors.OpExecError("Network '%s' with UUID %s disappeared" % |
259 |
(self.op.network_name, self.network_uuid)) |
260 |
|
261 |
|
262 |
class LUNetworkSetParams(LogicalUnit): |
263 |
"""Modifies the parameters of a network.
|
264 |
|
265 |
"""
|
266 |
HPATH = "network-modify"
|
267 |
HTYPE = constants.HTYPE_NETWORK |
268 |
REQ_BGL = False
|
269 |
|
270 |
def CheckArguments(self): |
271 |
if (self.op.gateway and |
272 |
(self.op.add_reserved_ips or self.op.remove_reserved_ips)): |
273 |
raise errors.OpPrereqError("Cannot modify gateway and reserved ips" |
274 |
" at once", errors.ECODE_INVAL)
|
275 |
|
276 |
def ExpandNames(self): |
277 |
self.network_uuid = self.cfg.LookupNetwork(self.op.network_name) |
278 |
|
279 |
self.needed_locks = {
|
280 |
locking.LEVEL_NETWORK: [self.network_uuid],
|
281 |
} |
282 |
|
283 |
def CheckPrereq(self): |
284 |
"""Check prerequisites.
|
285 |
|
286 |
"""
|
287 |
self.network = self.cfg.GetNetwork(self.network_uuid) |
288 |
self.gateway = self.network.gateway |
289 |
self.mac_prefix = self.network.mac_prefix |
290 |
self.network6 = self.network.network6 |
291 |
self.gateway6 = self.network.gateway6 |
292 |
self.tags = self.network.tags |
293 |
|
294 |
self.pool = network.AddressPool(self.network) |
295 |
|
296 |
if self.op.gateway: |
297 |
if self.op.gateway == constants.VALUE_NONE: |
298 |
self.gateway = None |
299 |
else:
|
300 |
self.gateway = self.op.gateway |
301 |
if self.pool.IsReserved(self.gateway): |
302 |
raise errors.OpPrereqError("Gateway IP address '%s' is already" |
303 |
" reserved" % self.gateway, |
304 |
errors.ECODE_STATE) |
305 |
|
306 |
if self.op.mac_prefix: |
307 |
if self.op.mac_prefix == constants.VALUE_NONE: |
308 |
self.mac_prefix = None |
309 |
else:
|
310 |
self.mac_prefix = \
|
311 |
utils.NormalizeAndValidateThreeOctetMacPrefix(self.op.mac_prefix)
|
312 |
|
313 |
if self.op.gateway6: |
314 |
if self.op.gateway6 == constants.VALUE_NONE: |
315 |
self.gateway6 = None |
316 |
else:
|
317 |
self.gateway6 = self.op.gateway6 |
318 |
|
319 |
if self.op.network6: |
320 |
if self.op.network6 == constants.VALUE_NONE: |
321 |
self.network6 = None |
322 |
else:
|
323 |
self.network6 = self.op.network6 |
324 |
|
325 |
def BuildHooksEnv(self): |
326 |
"""Build hooks env.
|
327 |
|
328 |
"""
|
329 |
args = { |
330 |
"name": self.op.network_name, |
331 |
"subnet": self.network.network, |
332 |
"gateway": self.gateway, |
333 |
"network6": self.network6, |
334 |
"gateway6": self.gateway6, |
335 |
"mac_prefix": self.mac_prefix, |
336 |
"tags": self.tags, |
337 |
} |
338 |
return _BuildNetworkHookEnv(**args) # pylint: disable=W0142 |
339 |
|
340 |
def BuildHooksNodes(self): |
341 |
"""Build hooks nodes.
|
342 |
|
343 |
"""
|
344 |
mn = self.cfg.GetMasterNode()
|
345 |
return ([mn], [mn])
|
346 |
|
347 |
def Exec(self, feedback_fn): |
348 |
"""Modifies the network.
|
349 |
|
350 |
"""
|
351 |
#TODO: reserve/release via temporary reservation manager
|
352 |
# extend cfg.ReserveIp/ReleaseIp with the external flag
|
353 |
if self.op.gateway: |
354 |
if self.gateway == self.network.gateway: |
355 |
self.LogWarning("Gateway is already %s", self.gateway) |
356 |
else:
|
357 |
if self.gateway: |
358 |
self.pool.Reserve(self.gateway, external=True) |
359 |
if self.network.gateway: |
360 |
self.pool.Release(self.network.gateway, external=True) |
361 |
self.network.gateway = self.gateway |
362 |
|
363 |
if self.op.add_reserved_ips: |
364 |
for ip in self.op.add_reserved_ips: |
365 |
try:
|
366 |
self.pool.Reserve(ip, external=True) |
367 |
except errors.AddressPoolError, err:
|
368 |
self.LogWarning("Cannot reserve IP address %s: %s", ip, err) |
369 |
|
370 |
if self.op.remove_reserved_ips: |
371 |
for ip in self.op.remove_reserved_ips: |
372 |
if ip == self.network.gateway: |
373 |
self.LogWarning("Cannot unreserve Gateway's IP") |
374 |
continue
|
375 |
try:
|
376 |
self.pool.Release(ip, external=True) |
377 |
except errors.AddressPoolError, err:
|
378 |
self.LogWarning("Cannot release IP address %s: %s", ip, err) |
379 |
|
380 |
if self.op.mac_prefix: |
381 |
self.network.mac_prefix = self.mac_prefix |
382 |
|
383 |
if self.op.network6: |
384 |
self.network.network6 = self.network6 |
385 |
|
386 |
if self.op.gateway6: |
387 |
self.network.gateway6 = self.gateway6 |
388 |
|
389 |
self.pool.Validate()
|
390 |
|
391 |
self.cfg.Update(self.network, feedback_fn) |
392 |
|
393 |
|
394 |
def _FmtNetworkConflict(details): |
395 |
"""Utility for L{_NetworkConflictCheck}.
|
396 |
|
397 |
"""
|
398 |
return utils.CommaJoin("nic%s/%s" % (idx, ipaddr) |
399 |
for (idx, ipaddr) in details) |
400 |
|
401 |
|
402 |
def _NetworkConflictCheck(lu, check_fn, action, instances): |
403 |
"""Checks for network interface conflicts with a network.
|
404 |
|
405 |
@type lu: L{LogicalUnit}
|
406 |
@type check_fn: callable receiving one parameter (L{objects.NIC}) and
|
407 |
returning boolean
|
408 |
@param check_fn: Function checking for conflict
|
409 |
@type action: string
|
410 |
@param action: Part of error message (see code)
|
411 |
@param instances: the instances to check
|
412 |
@type instances: list of instance objects
|
413 |
@raise errors.OpPrereqError: If conflicting IP addresses are found.
|
414 |
|
415 |
"""
|
416 |
conflicts = [] |
417 |
|
418 |
for instance in instances: |
419 |
instconflicts = [(idx, nic.ip) |
420 |
for (idx, nic) in enumerate(instance.nics) |
421 |
if check_fn(nic)]
|
422 |
|
423 |
if instconflicts:
|
424 |
conflicts.append((instance.name, instconflicts)) |
425 |
|
426 |
if conflicts:
|
427 |
lu.LogWarning("IP addresses from network '%s', which is about to %s"
|
428 |
" node group '%s', are in use: %s" %
|
429 |
(lu.network_name, action, lu.group.name, |
430 |
utils.CommaJoin(("%s: %s" %
|
431 |
(name, _FmtNetworkConflict(details))) |
432 |
for (name, details) in conflicts))) |
433 |
|
434 |
raise errors.OpPrereqError("Conflicting IP addresses found; " |
435 |
" remove/modify the corresponding network"
|
436 |
" interfaces", errors.ECODE_STATE)
|
437 |
|
438 |
|
439 |
class LUNetworkConnect(LogicalUnit): |
440 |
"""Connect a network to a nodegroup
|
441 |
|
442 |
"""
|
443 |
HPATH = "network-connect"
|
444 |
HTYPE = constants.HTYPE_NETWORK |
445 |
REQ_BGL = False
|
446 |
|
447 |
def ExpandNames(self): |
448 |
self.network_name = self.op.network_name |
449 |
self.group_name = self.op.group_name |
450 |
self.network_mode = self.op.network_mode |
451 |
self.network_link = self.op.network_link |
452 |
|
453 |
self.network_uuid = self.cfg.LookupNetwork(self.network_name) |
454 |
self.group_uuid = self.cfg.LookupNodeGroup(self.group_name) |
455 |
|
456 |
self.needed_locks = {
|
457 |
locking.LEVEL_INSTANCE: [], |
458 |
locking.LEVEL_NODEGROUP: [self.group_uuid],
|
459 |
} |
460 |
self.share_locks[locking.LEVEL_INSTANCE] = 1 |
461 |
|
462 |
if self.op.conflicts_check: |
463 |
self.needed_locks[locking.LEVEL_NETWORK] = [self.network_uuid] |
464 |
self.share_locks[locking.LEVEL_NETWORK] = 1 |
465 |
|
466 |
def DeclareLocks(self, level): |
467 |
if level == locking.LEVEL_INSTANCE:
|
468 |
assert not self.needed_locks[locking.LEVEL_INSTANCE] |
469 |
|
470 |
# Lock instances optimistically, needs verification once group lock has
|
471 |
# been acquired
|
472 |
if self.op.conflicts_check: |
473 |
self.needed_locks[locking.LEVEL_INSTANCE] = \
|
474 |
self.cfg.GetInstanceNames(
|
475 |
self.cfg.GetNodeGroupInstances(self.group_uuid)) |
476 |
|
477 |
def BuildHooksEnv(self): |
478 |
ret = { |
479 |
"GROUP_NAME": self.group_name, |
480 |
"GROUP_NETWORK_MODE": self.network_mode, |
481 |
"GROUP_NETWORK_LINK": self.network_link, |
482 |
} |
483 |
return ret
|
484 |
|
485 |
def BuildHooksNodes(self): |
486 |
node_uuids = self.cfg.GetNodeGroup(self.group_uuid).members |
487 |
return (node_uuids, node_uuids)
|
488 |
|
489 |
def CheckPrereq(self): |
490 |
owned_groups = frozenset(self.owned_locks(locking.LEVEL_NODEGROUP)) |
491 |
|
492 |
assert self.group_uuid in owned_groups |
493 |
|
494 |
# Check if locked instances are still correct
|
495 |
owned_instance_names = frozenset(self.owned_locks(locking.LEVEL_INSTANCE)) |
496 |
if self.op.conflicts_check: |
497 |
CheckNodeGroupInstances(self.cfg, self.group_uuid, owned_instance_names) |
498 |
|
499 |
self.netparams = {
|
500 |
constants.NIC_MODE: self.network_mode,
|
501 |
constants.NIC_LINK: self.network_link,
|
502 |
} |
503 |
objects.NIC.CheckParameterSyntax(self.netparams)
|
504 |
|
505 |
self.group = self.cfg.GetNodeGroup(self.group_uuid) |
506 |
#if self.network_mode == constants.NIC_MODE_BRIDGED:
|
507 |
# _CheckNodeGroupBridgesExist(self, self.network_link, self.group_uuid)
|
508 |
self.connected = False |
509 |
if self.network_uuid in self.group.networks: |
510 |
self.LogWarning("Network '%s' is already mapped to group '%s'" % |
511 |
(self.network_name, self.group.name)) |
512 |
self.connected = True |
513 |
|
514 |
# check only if not already connected
|
515 |
elif self.op.conflicts_check: |
516 |
pool = network.AddressPool(self.cfg.GetNetwork(self.network_uuid)) |
517 |
|
518 |
_NetworkConflictCheck( |
519 |
self, lambda nic: pool.Contains(nic.ip), "connect to", |
520 |
[instance_info for (_, instance_info) in |
521 |
self.cfg.GetMultiInstanceInfoByName(owned_instance_names)])
|
522 |
|
523 |
def Exec(self, feedback_fn): |
524 |
# Connect the network and update the group only if not already connected
|
525 |
if not self.connected: |
526 |
self.group.networks[self.network_uuid] = self.netparams |
527 |
self.cfg.Update(self.group, feedback_fn) |
528 |
|
529 |
|
530 |
class LUNetworkDisconnect(LogicalUnit): |
531 |
"""Disconnect a network to a nodegroup
|
532 |
|
533 |
"""
|
534 |
HPATH = "network-disconnect"
|
535 |
HTYPE = constants.HTYPE_NETWORK |
536 |
REQ_BGL = False
|
537 |
|
538 |
def ExpandNames(self): |
539 |
self.network_name = self.op.network_name |
540 |
self.group_name = self.op.group_name |
541 |
|
542 |
self.network_uuid = self.cfg.LookupNetwork(self.network_name) |
543 |
self.group_uuid = self.cfg.LookupNodeGroup(self.group_name) |
544 |
|
545 |
self.needed_locks = {
|
546 |
locking.LEVEL_INSTANCE: [], |
547 |
locking.LEVEL_NODEGROUP: [self.group_uuid],
|
548 |
} |
549 |
self.share_locks[locking.LEVEL_INSTANCE] = 1 |
550 |
|
551 |
def DeclareLocks(self, level): |
552 |
if level == locking.LEVEL_INSTANCE:
|
553 |
assert not self.needed_locks[locking.LEVEL_INSTANCE] |
554 |
|
555 |
# Lock instances optimistically, needs verification once group lock has
|
556 |
# been acquired
|
557 |
self.needed_locks[locking.LEVEL_INSTANCE] = \
|
558 |
self.cfg.GetInstanceNames(
|
559 |
self.cfg.GetNodeGroupInstances(self.group_uuid)) |
560 |
|
561 |
def BuildHooksEnv(self): |
562 |
ret = { |
563 |
"GROUP_NAME": self.group_name, |
564 |
} |
565 |
return ret
|
566 |
|
567 |
def BuildHooksNodes(self): |
568 |
nodes = self.cfg.GetNodeGroup(self.group_uuid).members |
569 |
return (nodes, nodes)
|
570 |
|
571 |
def CheckPrereq(self): |
572 |
owned_groups = frozenset(self.owned_locks(locking.LEVEL_NODEGROUP)) |
573 |
|
574 |
assert self.group_uuid in owned_groups |
575 |
|
576 |
# Check if locked instances are still correct
|
577 |
owned_instances = frozenset(self.owned_locks(locking.LEVEL_INSTANCE)) |
578 |
CheckNodeGroupInstances(self.cfg, self.group_uuid, owned_instances) |
579 |
|
580 |
self.group = self.cfg.GetNodeGroup(self.group_uuid) |
581 |
self.connected = True |
582 |
if self.network_uuid not in self.group.networks: |
583 |
self.LogWarning("Network '%s' is not mapped to group '%s'", |
584 |
self.network_name, self.group.name) |
585 |
self.connected = False |
586 |
|
587 |
# We need this check only if network is not already connected
|
588 |
else:
|
589 |
_NetworkConflictCheck( |
590 |
self, lambda nic: nic.network == self.network_uuid, "disconnect from", |
591 |
[instance_info for (_, instance_info) in |
592 |
self.cfg.GetMultiInstanceInfoByName(owned_instances)])
|
593 |
|
594 |
def Exec(self, feedback_fn): |
595 |
# Disconnect the network and update the group only if network is connected
|
596 |
if self.connected: |
597 |
del self.group.networks[self.network_uuid] |
598 |
self.cfg.Update(self.group, feedback_fn) |