root / lib / server / noded.py @ a59faf4b
History | View | Annotate | Download (27.3 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007, 2010, 2011 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 |
"""Ganeti node daemon"""
|
23 |
|
24 |
# pylint: disable-msg=C0103,W0142
|
25 |
|
26 |
# C0103: Functions in this module need to have a given name structure,
|
27 |
# and the name of the daemon doesn't match
|
28 |
|
29 |
# W0142: Used * or ** magic, since we do use it extensively in this
|
30 |
# module
|
31 |
|
32 |
import os |
33 |
import sys |
34 |
import logging |
35 |
import signal |
36 |
|
37 |
from optparse import OptionParser |
38 |
|
39 |
from ganeti import backend |
40 |
from ganeti import constants |
41 |
from ganeti import objects |
42 |
from ganeti import errors |
43 |
from ganeti import jstore |
44 |
from ganeti import daemon |
45 |
from ganeti import http |
46 |
from ganeti import utils |
47 |
from ganeti import storage |
48 |
from ganeti import serializer |
49 |
from ganeti import netutils |
50 |
|
51 |
import ganeti.http.server # pylint: disable-msg=W0611 |
52 |
|
53 |
|
54 |
queue_lock = None
|
55 |
|
56 |
|
57 |
def _PrepareQueueLock(): |
58 |
"""Try to prepare the queue lock.
|
59 |
|
60 |
@return: None for success, otherwise an exception object
|
61 |
|
62 |
"""
|
63 |
global queue_lock # pylint: disable-msg=W0603 |
64 |
|
65 |
if queue_lock is not None: |
66 |
return None |
67 |
|
68 |
# Prepare job queue
|
69 |
try:
|
70 |
queue_lock = jstore.InitAndVerifyQueue(must_lock=False)
|
71 |
return None |
72 |
except EnvironmentError, err: |
73 |
return err
|
74 |
|
75 |
|
76 |
def _RequireJobQueueLock(fn): |
77 |
"""Decorator for job queue manipulating functions.
|
78 |
|
79 |
"""
|
80 |
QUEUE_LOCK_TIMEOUT = 10
|
81 |
|
82 |
def wrapper(*args, **kwargs): |
83 |
# Locking in exclusive, blocking mode because there could be several
|
84 |
# children running at the same time. Waiting up to 10 seconds.
|
85 |
if _PrepareQueueLock() is not None: |
86 |
raise errors.JobQueueError("Job queue failed initialization," |
87 |
" cannot update jobs")
|
88 |
queue_lock.Exclusive(blocking=True, timeout=QUEUE_LOCK_TIMEOUT)
|
89 |
try:
|
90 |
return fn(*args, **kwargs)
|
91 |
finally:
|
92 |
queue_lock.Unlock() |
93 |
|
94 |
return wrapper
|
95 |
|
96 |
|
97 |
def _DecodeImportExportIO(ieio, ieioargs): |
98 |
"""Decodes import/export I/O information.
|
99 |
|
100 |
"""
|
101 |
if ieio == constants.IEIO_RAW_DISK:
|
102 |
assert len(ieioargs) == 1 |
103 |
return (objects.Disk.FromDict(ieioargs[0]), ) |
104 |
|
105 |
if ieio == constants.IEIO_SCRIPT:
|
106 |
assert len(ieioargs) == 2 |
107 |
return (objects.Disk.FromDict(ieioargs[0]), ieioargs[1]) |
108 |
|
109 |
return ieioargs
|
110 |
|
111 |
|
112 |
class MlockallRequestExecutor(http.server.HttpServerRequestExecutor): |
113 |
"""Custom Request Executor class that ensures NodeHttpServer children are
|
114 |
locked in ram.
|
115 |
|
116 |
"""
|
117 |
def __init__(self, *args, **kwargs): |
118 |
utils.Mlockall() |
119 |
|
120 |
http.server.HttpServerRequestExecutor.__init__(self, *args, **kwargs)
|
121 |
|
122 |
|
123 |
class NodeHttpServer(http.server.HttpServer): |
124 |
"""The server implementation.
|
125 |
|
126 |
This class holds all methods exposed over the RPC interface.
|
127 |
|
128 |
"""
|
129 |
# too many public methods, and unused args - all methods get params
|
130 |
# due to the API
|
131 |
# pylint: disable-msg=R0904,W0613
|
132 |
def __init__(self, *args, **kwargs): |
133 |
http.server.HttpServer.__init__(self, *args, **kwargs)
|
134 |
self.noded_pid = os.getpid()
|
135 |
|
136 |
def HandleRequest(self, req): |
137 |
"""Handle a request.
|
138 |
|
139 |
"""
|
140 |
if req.request_method.upper() != http.HTTP_PUT:
|
141 |
raise http.HttpBadRequest()
|
142 |
|
143 |
path = req.request_path |
144 |
if path.startswith("/"): |
145 |
path = path[1:]
|
146 |
|
147 |
method = getattr(self, "perspective_%s" % path, None) |
148 |
if method is None: |
149 |
raise http.HttpNotFound()
|
150 |
|
151 |
try:
|
152 |
result = (True, method(serializer.LoadJson(req.request_body)))
|
153 |
|
154 |
except backend.RPCFail, err:
|
155 |
# our custom failure exception; str(err) works fine if the
|
156 |
# exception was constructed with a single argument, and in
|
157 |
# this case, err.message == err.args[0] == str(err)
|
158 |
result = (False, str(err)) |
159 |
except errors.QuitGanetiException, err:
|
160 |
# Tell parent to quit
|
161 |
logging.info("Shutting down the node daemon, arguments: %s",
|
162 |
str(err.args))
|
163 |
os.kill(self.noded_pid, signal.SIGTERM)
|
164 |
# And return the error's arguments, which must be already in
|
165 |
# correct tuple format
|
166 |
result = err.args |
167 |
except Exception, err: |
168 |
logging.exception("Error in RPC call")
|
169 |
result = (False, "Error while executing backend function: %s" % str(err)) |
170 |
|
171 |
return serializer.DumpJson(result, indent=False) |
172 |
|
173 |
# the new block devices --------------------------
|
174 |
|
175 |
@staticmethod
|
176 |
def perspective_blockdev_create(params): |
177 |
"""Create a block device.
|
178 |
|
179 |
"""
|
180 |
bdev_s, size, owner, on_primary, info = params |
181 |
bdev = objects.Disk.FromDict(bdev_s) |
182 |
if bdev is None: |
183 |
raise ValueError("can't unserialize data!") |
184 |
return backend.BlockdevCreate(bdev, size, owner, on_primary, info)
|
185 |
|
186 |
@staticmethod
|
187 |
def perspective_blockdev_pause_resume_sync(params): |
188 |
"""Pause/resume sync of a block device.
|
189 |
|
190 |
"""
|
191 |
disks_s, pause = params |
192 |
disks = [objects.Disk.FromDict(bdev_s) for bdev_s in disks_s] |
193 |
return backend.BlockdevPauseResumeSync(disks, pause)
|
194 |
|
195 |
@staticmethod
|
196 |
def perspective_blockdev_wipe(params): |
197 |
"""Wipe a block device.
|
198 |
|
199 |
"""
|
200 |
bdev_s, offset, size = params |
201 |
bdev = objects.Disk.FromDict(bdev_s) |
202 |
return backend.BlockdevWipe(bdev, offset, size)
|
203 |
|
204 |
@staticmethod
|
205 |
def perspective_blockdev_remove(params): |
206 |
"""Remove a block device.
|
207 |
|
208 |
"""
|
209 |
bdev_s = params[0]
|
210 |
bdev = objects.Disk.FromDict(bdev_s) |
211 |
return backend.BlockdevRemove(bdev)
|
212 |
|
213 |
@staticmethod
|
214 |
def perspective_blockdev_rename(params): |
215 |
"""Remove a block device.
|
216 |
|
217 |
"""
|
218 |
devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params] |
219 |
return backend.BlockdevRename(devlist)
|
220 |
|
221 |
@staticmethod
|
222 |
def perspective_blockdev_assemble(params): |
223 |
"""Assemble a block device.
|
224 |
|
225 |
"""
|
226 |
bdev_s, owner, on_primary, idx = params |
227 |
bdev = objects.Disk.FromDict(bdev_s) |
228 |
if bdev is None: |
229 |
raise ValueError("can't unserialize data!") |
230 |
return backend.BlockdevAssemble(bdev, owner, on_primary, idx)
|
231 |
|
232 |
@staticmethod
|
233 |
def perspective_blockdev_shutdown(params): |
234 |
"""Shutdown a block device.
|
235 |
|
236 |
"""
|
237 |
bdev_s = params[0]
|
238 |
bdev = objects.Disk.FromDict(bdev_s) |
239 |
if bdev is None: |
240 |
raise ValueError("can't unserialize data!") |
241 |
return backend.BlockdevShutdown(bdev)
|
242 |
|
243 |
@staticmethod
|
244 |
def perspective_blockdev_addchildren(params): |
245 |
"""Add a child to a mirror device.
|
246 |
|
247 |
Note: this is only valid for mirror devices. It's the caller's duty
|
248 |
to send a correct disk, otherwise we raise an error.
|
249 |
|
250 |
"""
|
251 |
bdev_s, ndev_s = params |
252 |
bdev = objects.Disk.FromDict(bdev_s) |
253 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
254 |
if bdev is None or ndevs.count(None) > 0: |
255 |
raise ValueError("can't unserialize data!") |
256 |
return backend.BlockdevAddchildren(bdev, ndevs)
|
257 |
|
258 |
@staticmethod
|
259 |
def perspective_blockdev_removechildren(params): |
260 |
"""Remove a child from a mirror device.
|
261 |
|
262 |
This is only valid for mirror devices, of course. It's the callers
|
263 |
duty to send a correct disk, otherwise we raise an error.
|
264 |
|
265 |
"""
|
266 |
bdev_s, ndev_s = params |
267 |
bdev = objects.Disk.FromDict(bdev_s) |
268 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
269 |
if bdev is None or ndevs.count(None) > 0: |
270 |
raise ValueError("can't unserialize data!") |
271 |
return backend.BlockdevRemovechildren(bdev, ndevs)
|
272 |
|
273 |
@staticmethod
|
274 |
def perspective_blockdev_getmirrorstatus(params): |
275 |
"""Return the mirror status for a list of disks.
|
276 |
|
277 |
"""
|
278 |
disks = [objects.Disk.FromDict(dsk_s) |
279 |
for dsk_s in params] |
280 |
return [status.ToDict()
|
281 |
for status in backend.BlockdevGetmirrorstatus(disks)] |
282 |
|
283 |
@staticmethod
|
284 |
def perspective_blockdev_getmirrorstatus_multi(params): |
285 |
"""Return the mirror status for a list of disks.
|
286 |
|
287 |
"""
|
288 |
(node_disks, ) = params |
289 |
|
290 |
node_name = netutils.Hostname.GetSysName() |
291 |
|
292 |
disks = [objects.Disk.FromDict(dsk_s) |
293 |
for dsk_s in node_disks.get(node_name, [])] |
294 |
|
295 |
result = [] |
296 |
|
297 |
for (success, status) in backend.BlockdevGetmirrorstatusMulti(disks): |
298 |
if success:
|
299 |
result.append((success, status.ToDict())) |
300 |
else:
|
301 |
result.append((success, status)) |
302 |
|
303 |
return result
|
304 |
|
305 |
@staticmethod
|
306 |
def perspective_blockdev_find(params): |
307 |
"""Expose the FindBlockDevice functionality for a disk.
|
308 |
|
309 |
This will try to find but not activate a disk.
|
310 |
|
311 |
"""
|
312 |
disk = objects.Disk.FromDict(params[0])
|
313 |
|
314 |
result = backend.BlockdevFind(disk) |
315 |
if result is None: |
316 |
return None |
317 |
|
318 |
return result.ToDict()
|
319 |
|
320 |
@staticmethod
|
321 |
def perspective_blockdev_snapshot(params): |
322 |
"""Create a snapshot device.
|
323 |
|
324 |
Note that this is only valid for LVM disks, if we get passed
|
325 |
something else we raise an exception. The snapshot device can be
|
326 |
remove by calling the generic block device remove call.
|
327 |
|
328 |
"""
|
329 |
cfbd = objects.Disk.FromDict(params[0])
|
330 |
return backend.BlockdevSnapshot(cfbd)
|
331 |
|
332 |
@staticmethod
|
333 |
def perspective_blockdev_grow(params): |
334 |
"""Grow a stack of devices.
|
335 |
|
336 |
"""
|
337 |
cfbd = objects.Disk.FromDict(params[0])
|
338 |
amount = params[1]
|
339 |
dryrun = params[2]
|
340 |
return backend.BlockdevGrow(cfbd, amount, dryrun)
|
341 |
|
342 |
@staticmethod
|
343 |
def perspective_blockdev_close(params): |
344 |
"""Closes the given block devices.
|
345 |
|
346 |
"""
|
347 |
disks = [objects.Disk.FromDict(cf) for cf in params[1]] |
348 |
return backend.BlockdevClose(params[0], disks) |
349 |
|
350 |
@staticmethod
|
351 |
def perspective_blockdev_getsize(params): |
352 |
"""Compute the sizes of the given block devices.
|
353 |
|
354 |
"""
|
355 |
disks = [objects.Disk.FromDict(cf) for cf in params[0]] |
356 |
return backend.BlockdevGetsize(disks)
|
357 |
|
358 |
@staticmethod
|
359 |
def perspective_blockdev_export(params): |
360 |
"""Compute the sizes of the given block devices.
|
361 |
|
362 |
"""
|
363 |
disk = objects.Disk.FromDict(params[0])
|
364 |
dest_node, dest_path, cluster_name = params[1:]
|
365 |
return backend.BlockdevExport(disk, dest_node, dest_path, cluster_name)
|
366 |
|
367 |
# blockdev/drbd specific methods ----------
|
368 |
|
369 |
@staticmethod
|
370 |
def perspective_drbd_disconnect_net(params): |
371 |
"""Disconnects the network connection of drbd disks.
|
372 |
|
373 |
Note that this is only valid for drbd disks, so the members of the
|
374 |
disk list must all be drbd devices.
|
375 |
|
376 |
"""
|
377 |
nodes_ip, disks = params |
378 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
379 |
return backend.DrbdDisconnectNet(nodes_ip, disks)
|
380 |
|
381 |
@staticmethod
|
382 |
def perspective_drbd_attach_net(params): |
383 |
"""Attaches the network connection of drbd disks.
|
384 |
|
385 |
Note that this is only valid for drbd disks, so the members of the
|
386 |
disk list must all be drbd devices.
|
387 |
|
388 |
"""
|
389 |
nodes_ip, disks, instance_name, multimaster = params |
390 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
391 |
return backend.DrbdAttachNet(nodes_ip, disks,
|
392 |
instance_name, multimaster) |
393 |
|
394 |
@staticmethod
|
395 |
def perspective_drbd_wait_sync(params): |
396 |
"""Wait until DRBD disks are synched.
|
397 |
|
398 |
Note that this is only valid for drbd disks, so the members of the
|
399 |
disk list must all be drbd devices.
|
400 |
|
401 |
"""
|
402 |
nodes_ip, disks = params |
403 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
404 |
return backend.DrbdWaitSync(nodes_ip, disks)
|
405 |
|
406 |
@staticmethod
|
407 |
def perspective_drbd_helper(params): |
408 |
"""Query drbd helper.
|
409 |
|
410 |
"""
|
411 |
return backend.GetDrbdUsermodeHelper()
|
412 |
|
413 |
# export/import --------------------------
|
414 |
|
415 |
@staticmethod
|
416 |
def perspective_finalize_export(params): |
417 |
"""Expose the finalize export functionality.
|
418 |
|
419 |
"""
|
420 |
instance = objects.Instance.FromDict(params[0])
|
421 |
|
422 |
snap_disks = [] |
423 |
for disk in params[1]: |
424 |
if isinstance(disk, bool): |
425 |
snap_disks.append(disk) |
426 |
else:
|
427 |
snap_disks.append(objects.Disk.FromDict(disk)) |
428 |
|
429 |
return backend.FinalizeExport(instance, snap_disks)
|
430 |
|
431 |
@staticmethod
|
432 |
def perspective_export_info(params): |
433 |
"""Query information about an existing export on this node.
|
434 |
|
435 |
The given path may not contain an export, in which case we return
|
436 |
None.
|
437 |
|
438 |
"""
|
439 |
path = params[0]
|
440 |
return backend.ExportInfo(path)
|
441 |
|
442 |
@staticmethod
|
443 |
def perspective_export_list(params): |
444 |
"""List the available exports on this node.
|
445 |
|
446 |
Note that as opposed to export_info, which may query data about an
|
447 |
export in any path, this only queries the standard Ganeti path
|
448 |
(constants.EXPORT_DIR).
|
449 |
|
450 |
"""
|
451 |
return backend.ListExports()
|
452 |
|
453 |
@staticmethod
|
454 |
def perspective_export_remove(params): |
455 |
"""Remove an export.
|
456 |
|
457 |
"""
|
458 |
export = params[0]
|
459 |
return backend.RemoveExport(export)
|
460 |
|
461 |
# block device ---------------------
|
462 |
@staticmethod
|
463 |
def perspective_bdev_sizes(params): |
464 |
"""Query the list of block devices
|
465 |
|
466 |
"""
|
467 |
devices = params[0]
|
468 |
return backend.GetBlockDevSizes(devices)
|
469 |
|
470 |
# volume --------------------------
|
471 |
|
472 |
@staticmethod
|
473 |
def perspective_lv_list(params): |
474 |
"""Query the list of logical volumes in a given volume group.
|
475 |
|
476 |
"""
|
477 |
vgname = params[0]
|
478 |
return backend.GetVolumeList(vgname)
|
479 |
|
480 |
@staticmethod
|
481 |
def perspective_vg_list(params): |
482 |
"""Query the list of volume groups.
|
483 |
|
484 |
"""
|
485 |
return backend.ListVolumeGroups()
|
486 |
|
487 |
# Storage --------------------------
|
488 |
|
489 |
@staticmethod
|
490 |
def perspective_storage_list(params): |
491 |
"""Get list of storage units.
|
492 |
|
493 |
"""
|
494 |
(su_name, su_args, name, fields) = params |
495 |
return storage.GetStorage(su_name, *su_args).List(name, fields)
|
496 |
|
497 |
@staticmethod
|
498 |
def perspective_storage_modify(params): |
499 |
"""Modify a storage unit.
|
500 |
|
501 |
"""
|
502 |
(su_name, su_args, name, changes) = params |
503 |
return storage.GetStorage(su_name, *su_args).Modify(name, changes)
|
504 |
|
505 |
@staticmethod
|
506 |
def perspective_storage_execute(params): |
507 |
"""Execute an operation on a storage unit.
|
508 |
|
509 |
"""
|
510 |
(su_name, su_args, name, op) = params |
511 |
return storage.GetStorage(su_name, *su_args).Execute(name, op)
|
512 |
|
513 |
# bridge --------------------------
|
514 |
|
515 |
@staticmethod
|
516 |
def perspective_bridges_exist(params): |
517 |
"""Check if all bridges given exist on this node.
|
518 |
|
519 |
"""
|
520 |
bridges_list = params[0]
|
521 |
return backend.BridgesExist(bridges_list)
|
522 |
|
523 |
# instance --------------------------
|
524 |
|
525 |
@staticmethod
|
526 |
def perspective_instance_os_add(params): |
527 |
"""Install an OS on a given instance.
|
528 |
|
529 |
"""
|
530 |
inst_s = params[0]
|
531 |
inst = objects.Instance.FromDict(inst_s) |
532 |
reinstall = params[1]
|
533 |
debug = params[2]
|
534 |
return backend.InstanceOsAdd(inst, reinstall, debug)
|
535 |
|
536 |
@staticmethod
|
537 |
def perspective_instance_run_rename(params): |
538 |
"""Runs the OS rename script for an instance.
|
539 |
|
540 |
"""
|
541 |
inst_s, old_name, debug = params |
542 |
inst = objects.Instance.FromDict(inst_s) |
543 |
return backend.RunRenameInstance(inst, old_name, debug)
|
544 |
|
545 |
@staticmethod
|
546 |
def perspective_instance_shutdown(params): |
547 |
"""Shutdown an instance.
|
548 |
|
549 |
"""
|
550 |
instance = objects.Instance.FromDict(params[0])
|
551 |
timeout = params[1]
|
552 |
return backend.InstanceShutdown(instance, timeout)
|
553 |
|
554 |
@staticmethod
|
555 |
def perspective_instance_start(params): |
556 |
"""Start an instance.
|
557 |
|
558 |
"""
|
559 |
instance = objects.Instance.FromDict(params[0])
|
560 |
return backend.StartInstance(instance)
|
561 |
|
562 |
@staticmethod
|
563 |
def perspective_migration_info(params): |
564 |
"""Gather information about an instance to be migrated.
|
565 |
|
566 |
"""
|
567 |
instance = objects.Instance.FromDict(params[0])
|
568 |
return backend.MigrationInfo(instance)
|
569 |
|
570 |
@staticmethod
|
571 |
def perspective_accept_instance(params): |
572 |
"""Prepare the node to accept an instance.
|
573 |
|
574 |
"""
|
575 |
instance, info, target = params |
576 |
instance = objects.Instance.FromDict(instance) |
577 |
return backend.AcceptInstance(instance, info, target)
|
578 |
|
579 |
@staticmethod
|
580 |
def perspective_finalize_migration(params): |
581 |
"""Finalize the instance migration.
|
582 |
|
583 |
"""
|
584 |
instance, info, success = params |
585 |
instance = objects.Instance.FromDict(instance) |
586 |
return backend.FinalizeMigration(instance, info, success)
|
587 |
|
588 |
@staticmethod
|
589 |
def perspective_instance_migrate(params): |
590 |
"""Migrates an instance.
|
591 |
|
592 |
"""
|
593 |
instance, target, live = params |
594 |
instance = objects.Instance.FromDict(instance) |
595 |
return backend.MigrateInstance(instance, target, live)
|
596 |
|
597 |
@staticmethod
|
598 |
def perspective_instance_reboot(params): |
599 |
"""Reboot an instance.
|
600 |
|
601 |
"""
|
602 |
instance = objects.Instance.FromDict(params[0])
|
603 |
reboot_type = params[1]
|
604 |
shutdown_timeout = params[2]
|
605 |
return backend.InstanceReboot(instance, reboot_type, shutdown_timeout)
|
606 |
|
607 |
@staticmethod
|
608 |
def perspective_instance_info(params): |
609 |
"""Query instance information.
|
610 |
|
611 |
"""
|
612 |
return backend.GetInstanceInfo(params[0], params[1]) |
613 |
|
614 |
@staticmethod
|
615 |
def perspective_instance_migratable(params): |
616 |
"""Query whether the specified instance can be migrated.
|
617 |
|
618 |
"""
|
619 |
instance = objects.Instance.FromDict(params[0])
|
620 |
return backend.GetInstanceMigratable(instance)
|
621 |
|
622 |
@staticmethod
|
623 |
def perspective_all_instances_info(params): |
624 |
"""Query information about all instances.
|
625 |
|
626 |
"""
|
627 |
return backend.GetAllInstancesInfo(params[0]) |
628 |
|
629 |
@staticmethod
|
630 |
def perspective_instance_list(params): |
631 |
"""Query the list of running instances.
|
632 |
|
633 |
"""
|
634 |
return backend.GetInstanceList(params[0]) |
635 |
|
636 |
# node --------------------------
|
637 |
|
638 |
@staticmethod
|
639 |
def perspective_node_tcp_ping(params): |
640 |
"""Do a TcpPing on the remote node.
|
641 |
|
642 |
"""
|
643 |
return netutils.TcpPing(params[1], params[2], timeout=params[3], |
644 |
live_port_needed=params[4], source=params[0]) |
645 |
|
646 |
@staticmethod
|
647 |
def perspective_node_has_ip_address(params): |
648 |
"""Checks if a node has the given ip address.
|
649 |
|
650 |
"""
|
651 |
return netutils.IPAddress.Own(params[0]) |
652 |
|
653 |
@staticmethod
|
654 |
def perspective_node_info(params): |
655 |
"""Query node information.
|
656 |
|
657 |
"""
|
658 |
vgname, hypervisor_type = params |
659 |
return backend.GetNodeInfo(vgname, hypervisor_type)
|
660 |
|
661 |
@staticmethod
|
662 |
def perspective_etc_hosts_modify(params): |
663 |
"""Modify a node entry in /etc/hosts.
|
664 |
|
665 |
"""
|
666 |
backend.EtcHostsModify(params[0], params[1], params[2]) |
667 |
|
668 |
return True |
669 |
|
670 |
@staticmethod
|
671 |
def perspective_node_verify(params): |
672 |
"""Run a verify sequence on this node.
|
673 |
|
674 |
"""
|
675 |
return backend.VerifyNode(params[0], params[1]) |
676 |
|
677 |
@staticmethod
|
678 |
def perspective_node_start_master(params): |
679 |
"""Promote this node to master status.
|
680 |
|
681 |
"""
|
682 |
return backend.StartMaster(params[0], params[1]) |
683 |
|
684 |
@staticmethod
|
685 |
def perspective_node_stop_master(params): |
686 |
"""Demote this node from master status.
|
687 |
|
688 |
"""
|
689 |
return backend.StopMaster(params[0]) |
690 |
|
691 |
@staticmethod
|
692 |
def perspective_node_leave_cluster(params): |
693 |
"""Cleanup after leaving a cluster.
|
694 |
|
695 |
"""
|
696 |
return backend.LeaveCluster(params[0]) |
697 |
|
698 |
@staticmethod
|
699 |
def perspective_node_volumes(params): |
700 |
"""Query the list of all logical volume groups.
|
701 |
|
702 |
"""
|
703 |
return backend.NodeVolumes()
|
704 |
|
705 |
@staticmethod
|
706 |
def perspective_node_demote_from_mc(params): |
707 |
"""Demote a node from the master candidate role.
|
708 |
|
709 |
"""
|
710 |
return backend.DemoteFromMC()
|
711 |
|
712 |
|
713 |
@staticmethod
|
714 |
def perspective_node_powercycle(params): |
715 |
"""Tries to powercycle the nod.
|
716 |
|
717 |
"""
|
718 |
hypervisor_type = params[0]
|
719 |
return backend.PowercycleNode(hypervisor_type)
|
720 |
|
721 |
|
722 |
# cluster --------------------------
|
723 |
|
724 |
@staticmethod
|
725 |
def perspective_version(params): |
726 |
"""Query version information.
|
727 |
|
728 |
"""
|
729 |
return constants.PROTOCOL_VERSION
|
730 |
|
731 |
@staticmethod
|
732 |
def perspective_upload_file(params): |
733 |
"""Upload a file.
|
734 |
|
735 |
Note that the backend implementation imposes strict rules on which
|
736 |
files are accepted.
|
737 |
|
738 |
"""
|
739 |
return backend.UploadFile(*params)
|
740 |
|
741 |
@staticmethod
|
742 |
def perspective_master_info(params): |
743 |
"""Query master information.
|
744 |
|
745 |
"""
|
746 |
return backend.GetMasterInfo()
|
747 |
|
748 |
@staticmethod
|
749 |
def perspective_run_oob(params): |
750 |
"""Runs oob on node.
|
751 |
|
752 |
"""
|
753 |
output = backend.RunOob(params[0], params[1], params[2], params[3]) |
754 |
if output:
|
755 |
result = serializer.LoadJson(output) |
756 |
else:
|
757 |
result = None
|
758 |
return result
|
759 |
|
760 |
@staticmethod
|
761 |
def perspective_write_ssconf_files(params): |
762 |
"""Write ssconf files.
|
763 |
|
764 |
"""
|
765 |
(values,) = params |
766 |
return backend.WriteSsconfFiles(values)
|
767 |
|
768 |
# os -----------------------
|
769 |
|
770 |
@staticmethod
|
771 |
def perspective_os_diagnose(params): |
772 |
"""Query detailed information about existing OSes.
|
773 |
|
774 |
"""
|
775 |
return backend.DiagnoseOS()
|
776 |
|
777 |
@staticmethod
|
778 |
def perspective_os_get(params): |
779 |
"""Query information about a given OS.
|
780 |
|
781 |
"""
|
782 |
name = params[0]
|
783 |
os_obj = backend.OSFromDisk(name) |
784 |
return os_obj.ToDict()
|
785 |
|
786 |
@staticmethod
|
787 |
def perspective_os_validate(params): |
788 |
"""Run a given OS' validation routine.
|
789 |
|
790 |
"""
|
791 |
required, name, checks, params = params |
792 |
return backend.ValidateOS(required, name, checks, params)
|
793 |
|
794 |
# hooks -----------------------
|
795 |
|
796 |
@staticmethod
|
797 |
def perspective_hooks_runner(params): |
798 |
"""Run hook scripts.
|
799 |
|
800 |
"""
|
801 |
hpath, phase, env = params |
802 |
hr = backend.HooksRunner() |
803 |
return hr.RunHooks(hpath, phase, env)
|
804 |
|
805 |
# iallocator -----------------
|
806 |
|
807 |
@staticmethod
|
808 |
def perspective_iallocator_runner(params): |
809 |
"""Run an iallocator script.
|
810 |
|
811 |
"""
|
812 |
name, idata = params |
813 |
iar = backend.IAllocatorRunner() |
814 |
return iar.Run(name, idata)
|
815 |
|
816 |
# test -----------------------
|
817 |
|
818 |
@staticmethod
|
819 |
def perspective_test_delay(params): |
820 |
"""Run test delay.
|
821 |
|
822 |
"""
|
823 |
duration = params[0]
|
824 |
status, rval = utils.TestDelay(duration) |
825 |
if not status: |
826 |
raise backend.RPCFail(rval)
|
827 |
return rval
|
828 |
|
829 |
# file storage ---------------
|
830 |
|
831 |
@staticmethod
|
832 |
def perspective_file_storage_dir_create(params): |
833 |
"""Create the file storage directory.
|
834 |
|
835 |
"""
|
836 |
file_storage_dir = params[0]
|
837 |
return backend.CreateFileStorageDir(file_storage_dir)
|
838 |
|
839 |
@staticmethod
|
840 |
def perspective_file_storage_dir_remove(params): |
841 |
"""Remove the file storage directory.
|
842 |
|
843 |
"""
|
844 |
file_storage_dir = params[0]
|
845 |
return backend.RemoveFileStorageDir(file_storage_dir)
|
846 |
|
847 |
@staticmethod
|
848 |
def perspective_file_storage_dir_rename(params): |
849 |
"""Rename the file storage directory.
|
850 |
|
851 |
"""
|
852 |
old_file_storage_dir = params[0]
|
853 |
new_file_storage_dir = params[1]
|
854 |
return backend.RenameFileStorageDir(old_file_storage_dir,
|
855 |
new_file_storage_dir) |
856 |
|
857 |
# jobs ------------------------
|
858 |
|
859 |
@staticmethod
|
860 |
@_RequireJobQueueLock
|
861 |
def perspective_jobqueue_update(params): |
862 |
"""Update job queue.
|
863 |
|
864 |
"""
|
865 |
(file_name, content) = params |
866 |
return backend.JobQueueUpdate(file_name, content)
|
867 |
|
868 |
@staticmethod
|
869 |
@_RequireJobQueueLock
|
870 |
def perspective_jobqueue_purge(params): |
871 |
"""Purge job queue.
|
872 |
|
873 |
"""
|
874 |
return backend.JobQueuePurge()
|
875 |
|
876 |
@staticmethod
|
877 |
@_RequireJobQueueLock
|
878 |
def perspective_jobqueue_rename(params): |
879 |
"""Rename a job queue file.
|
880 |
|
881 |
"""
|
882 |
# TODO: What if a file fails to rename?
|
883 |
return [backend.JobQueueRename(old, new) for old, new in params] |
884 |
|
885 |
# hypervisor ---------------
|
886 |
|
887 |
@staticmethod
|
888 |
def perspective_hypervisor_validate_params(params): |
889 |
"""Validate the hypervisor parameters.
|
890 |
|
891 |
"""
|
892 |
(hvname, hvparams) = params |
893 |
return backend.ValidateHVParams(hvname, hvparams)
|
894 |
|
895 |
# Crypto
|
896 |
|
897 |
@staticmethod
|
898 |
def perspective_x509_cert_create(params): |
899 |
"""Creates a new X509 certificate for SSL/TLS.
|
900 |
|
901 |
"""
|
902 |
(validity, ) = params |
903 |
return backend.CreateX509Certificate(validity)
|
904 |
|
905 |
@staticmethod
|
906 |
def perspective_x509_cert_remove(params): |
907 |
"""Removes a X509 certificate.
|
908 |
|
909 |
"""
|
910 |
(name, ) = params |
911 |
return backend.RemoveX509Certificate(name)
|
912 |
|
913 |
# Import and export
|
914 |
|
915 |
@staticmethod
|
916 |
def perspective_import_start(params): |
917 |
"""Starts an import daemon.
|
918 |
|
919 |
"""
|
920 |
(opts_s, instance, dest, dest_args) = params |
921 |
|
922 |
opts = objects.ImportExportOptions.FromDict(opts_s) |
923 |
|
924 |
return backend.StartImportExportDaemon(constants.IEM_IMPORT, opts,
|
925 |
None, None, |
926 |
objects.Instance.FromDict(instance), |
927 |
dest, |
928 |
_DecodeImportExportIO(dest, |
929 |
dest_args)) |
930 |
|
931 |
@staticmethod
|
932 |
def perspective_export_start(params): |
933 |
"""Starts an export daemon.
|
934 |
|
935 |
"""
|
936 |
(opts_s, host, port, instance, source, source_args) = params |
937 |
|
938 |
opts = objects.ImportExportOptions.FromDict(opts_s) |
939 |
|
940 |
return backend.StartImportExportDaemon(constants.IEM_EXPORT, opts,
|
941 |
host, port, |
942 |
objects.Instance.FromDict(instance), |
943 |
source, |
944 |
_DecodeImportExportIO(source, |
945 |
source_args)) |
946 |
|
947 |
@staticmethod
|
948 |
def perspective_impexp_status(params): |
949 |
"""Retrieves the status of an import or export daemon.
|
950 |
|
951 |
"""
|
952 |
return backend.GetImportExportStatus(params[0]) |
953 |
|
954 |
@staticmethod
|
955 |
def perspective_impexp_abort(params): |
956 |
"""Aborts an import or export.
|
957 |
|
958 |
"""
|
959 |
return backend.AbortImportExport(params[0]) |
960 |
|
961 |
@staticmethod
|
962 |
def perspective_impexp_cleanup(params): |
963 |
"""Cleans up after an import or export.
|
964 |
|
965 |
"""
|
966 |
return backend.CleanupImportExport(params[0]) |
967 |
|
968 |
|
969 |
def CheckNoded(_, args): |
970 |
"""Initial checks whether to run or exit with a failure.
|
971 |
|
972 |
"""
|
973 |
if args: # noded doesn't take any arguments |
974 |
print >> sys.stderr, ("Usage: %s [-f] [-d] [-p port] [-b ADDRESS]" % |
975 |
sys.argv[0])
|
976 |
sys.exit(constants.EXIT_FAILURE) |
977 |
|
978 |
|
979 |
def PrepNoded(options, _): |
980 |
"""Preparation node daemon function, executed with the PID file held.
|
981 |
|
982 |
"""
|
983 |
if options.mlock:
|
984 |
request_executor_class = MlockallRequestExecutor |
985 |
try:
|
986 |
utils.Mlockall() |
987 |
except errors.NoCtypesError:
|
988 |
logging.warning("Cannot set memory lock, ctypes module not found")
|
989 |
request_executor_class = http.server.HttpServerRequestExecutor |
990 |
else:
|
991 |
request_executor_class = http.server.HttpServerRequestExecutor |
992 |
|
993 |
# Read SSL certificate
|
994 |
if options.ssl:
|
995 |
ssl_params = http.HttpSslParams(ssl_key_path=options.ssl_key, |
996 |
ssl_cert_path=options.ssl_cert) |
997 |
else:
|
998 |
ssl_params = None
|
999 |
|
1000 |
err = _PrepareQueueLock() |
1001 |
if err is not None: |
1002 |
# this might be some kind of file-system/permission error; while
|
1003 |
# this breaks the job queue functionality, we shouldn't prevent
|
1004 |
# startup of the whole node daemon because of this
|
1005 |
logging.critical("Can't init/verify the queue, proceeding anyway: %s", err)
|
1006 |
|
1007 |
mainloop = daemon.Mainloop() |
1008 |
server = NodeHttpServer(mainloop, options.bind_address, options.port, |
1009 |
ssl_params=ssl_params, ssl_verify_peer=True,
|
1010 |
request_executor_class=request_executor_class) |
1011 |
server.Start() |
1012 |
return (mainloop, server)
|
1013 |
|
1014 |
|
1015 |
def ExecNoded(options, args, prep_data): # pylint: disable-msg=W0613 |
1016 |
"""Main node daemon function, executed with the PID file held.
|
1017 |
|
1018 |
"""
|
1019 |
(mainloop, server) = prep_data |
1020 |
try:
|
1021 |
mainloop.Run() |
1022 |
finally:
|
1023 |
server.Stop() |
1024 |
|
1025 |
|
1026 |
def Main(): |
1027 |
"""Main function for the node daemon.
|
1028 |
|
1029 |
"""
|
1030 |
parser = OptionParser(description="Ganeti node daemon",
|
1031 |
usage="%prog [-f] [-d] [-p port] [-b ADDRESS]",
|
1032 |
version="%%prog (ganeti) %s" %
|
1033 |
constants.RELEASE_VERSION) |
1034 |
parser.add_option("--no-mlock", dest="mlock", |
1035 |
help="Do not mlock the node memory in ram",
|
1036 |
default=True, action="store_false") |
1037 |
|
1038 |
daemon.GenericMain(constants.NODED, parser, CheckNoded, PrepNoded, ExecNoded, |
1039 |
default_ssl_cert=constants.NODED_CERT_FILE, |
1040 |
default_ssl_key=constants.NODED_CERT_FILE, |
1041 |
console_logging=True)
|