root / daemons / ganeti-noded @ 90b54c26
History | View | Annotate | Download (21.2 kB)
1 |
#!/usr/bin/python |
---|---|
2 |
# |
3 |
|
4 |
# Copyright (C) 2006, 2007 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 |
# functions in this module need to have a given name structure, so: |
25 |
# pylint: disable-msg=C0103 |
26 |
|
27 |
import os |
28 |
import sys |
29 |
import traceback |
30 |
import SocketServer |
31 |
import errno |
32 |
import logging |
33 |
import signal |
34 |
|
35 |
from optparse import OptionParser |
36 |
|
37 |
from ganeti import backend |
38 |
from ganeti import constants |
39 |
from ganeti import objects |
40 |
from ganeti import errors |
41 |
from ganeti import jstore |
42 |
from ganeti import daemon |
43 |
from ganeti import http |
44 |
from ganeti import utils |
45 |
|
46 |
import ganeti.http.server |
47 |
|
48 |
|
49 |
queue_lock = None |
50 |
|
51 |
|
52 |
def _RequireJobQueueLock(fn): |
53 |
"""Decorator for job queue manipulating functions. |
54 |
|
55 |
""" |
56 |
QUEUE_LOCK_TIMEOUT = 10 |
57 |
|
58 |
def wrapper(*args, **kwargs): |
59 |
# Locking in exclusive, blocking mode because there could be several |
60 |
# children running at the same time. Waiting up to 10 seconds. |
61 |
queue_lock.Exclusive(blocking=True, timeout=QUEUE_LOCK_TIMEOUT) |
62 |
try: |
63 |
return fn(*args, **kwargs) |
64 |
finally: |
65 |
queue_lock.Unlock() |
66 |
|
67 |
return wrapper |
68 |
|
69 |
|
70 |
class NodeHttpServer(http.server.HttpServer): |
71 |
"""The server implementation. |
72 |
|
73 |
This class holds all methods exposed over the RPC interface. |
74 |
|
75 |
""" |
76 |
def __init__(self, *args, **kwargs): |
77 |
http.server.HttpServer.__init__(self, *args, **kwargs) |
78 |
self.noded_pid = os.getpid() |
79 |
|
80 |
def HandleRequest(self, req): |
81 |
"""Handle a request. |
82 |
|
83 |
""" |
84 |
if req.request_method.upper() != http.HTTP_PUT: |
85 |
raise http.HttpBadRequest() |
86 |
|
87 |
path = req.request_path |
88 |
if path.startswith("/"): |
89 |
path = path[1:] |
90 |
|
91 |
method = getattr(self, "perspective_%s" % path, None) |
92 |
if method is None: |
93 |
raise http.HttpNotFound() |
94 |
|
95 |
try: |
96 |
return method(req.request_body) |
97 |
except backend.RPCFail, err: |
98 |
# our custom failure exception; str(err) works fine if the |
99 |
# exception was constructed with a single argument, and in |
100 |
# this case, err.message == err.args[0] == str(err) |
101 |
return (False, str(err)) |
102 |
except errors.QuitGanetiException, err: |
103 |
# Tell parent to quit |
104 |
logging.info("Shutting down the node daemon, arguments: %s", |
105 |
str(err.args)) |
106 |
os.kill(self.noded_pid, signal.SIGTERM) |
107 |
# And return the error's arguments, which must be already in |
108 |
# correct tuple format |
109 |
return err.args |
110 |
except: |
111 |
logging.exception("Error in RPC call") |
112 |
raise |
113 |
|
114 |
# the new block devices -------------------------- |
115 |
|
116 |
@staticmethod |
117 |
def perspective_blockdev_create(params): |
118 |
"""Create a block device. |
119 |
|
120 |
""" |
121 |
bdev_s, size, owner, on_primary, info = params |
122 |
bdev = objects.Disk.FromDict(bdev_s) |
123 |
if bdev is None: |
124 |
raise ValueError("can't unserialize data!") |
125 |
return backend.BlockdevCreate(bdev, size, owner, on_primary, info) |
126 |
|
127 |
@staticmethod |
128 |
def perspective_blockdev_remove(params): |
129 |
"""Remove a block device. |
130 |
|
131 |
""" |
132 |
bdev_s = params[0] |
133 |
bdev = objects.Disk.FromDict(bdev_s) |
134 |
return backend.BlockdevRemove(bdev) |
135 |
|
136 |
@staticmethod |
137 |
def perspective_blockdev_rename(params): |
138 |
"""Remove a block device. |
139 |
|
140 |
""" |
141 |
devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params] |
142 |
return backend.BlockdevRename(devlist) |
143 |
|
144 |
@staticmethod |
145 |
def perspective_blockdev_assemble(params): |
146 |
"""Assemble a block device. |
147 |
|
148 |
""" |
149 |
bdev_s, owner, on_primary = params |
150 |
bdev = objects.Disk.FromDict(bdev_s) |
151 |
if bdev is None: |
152 |
raise ValueError("can't unserialize data!") |
153 |
return backend.BlockdevAssemble(bdev, owner, on_primary) |
154 |
|
155 |
@staticmethod |
156 |
def perspective_blockdev_shutdown(params): |
157 |
"""Shutdown a block device. |
158 |
|
159 |
""" |
160 |
bdev_s = params[0] |
161 |
bdev = objects.Disk.FromDict(bdev_s) |
162 |
if bdev is None: |
163 |
raise ValueError("can't unserialize data!") |
164 |
return backend.BlockdevShutdown(bdev) |
165 |
|
166 |
@staticmethod |
167 |
def perspective_blockdev_addchildren(params): |
168 |
"""Add a child to a mirror device. |
169 |
|
170 |
Note: this is only valid for mirror devices. It's the caller's duty |
171 |
to send a correct disk, otherwise we raise an error. |
172 |
|
173 |
""" |
174 |
bdev_s, ndev_s = params |
175 |
bdev = objects.Disk.FromDict(bdev_s) |
176 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
177 |
if bdev is None or ndevs.count(None) > 0: |
178 |
raise ValueError("can't unserialize data!") |
179 |
return backend.BlockdevAddchildren(bdev, ndevs) |
180 |
|
181 |
@staticmethod |
182 |
def perspective_blockdev_removechildren(params): |
183 |
"""Remove a child from a mirror device. |
184 |
|
185 |
This is only valid for mirror devices, of course. It's the callers |
186 |
duty to send a correct disk, otherwise we raise an error. |
187 |
|
188 |
""" |
189 |
bdev_s, ndev_s = params |
190 |
bdev = objects.Disk.FromDict(bdev_s) |
191 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
192 |
if bdev is None or ndevs.count(None) > 0: |
193 |
raise ValueError("can't unserialize data!") |
194 |
return backend.BlockdevRemovechildren(bdev, ndevs) |
195 |
|
196 |
@staticmethod |
197 |
def perspective_blockdev_getmirrorstatus(params): |
198 |
"""Return the mirror status for a list of disks. |
199 |
|
200 |
""" |
201 |
disks = [objects.Disk.FromDict(dsk_s) |
202 |
for dsk_s in params] |
203 |
return backend.BlockdevGetmirrorstatus(disks) |
204 |
|
205 |
@staticmethod |
206 |
def perspective_blockdev_find(params): |
207 |
"""Expose the FindBlockDevice functionality for a disk. |
208 |
|
209 |
This will try to find but not activate a disk. |
210 |
|
211 |
""" |
212 |
disk = objects.Disk.FromDict(params[0]) |
213 |
return backend.BlockdevFind(disk) |
214 |
|
215 |
@staticmethod |
216 |
def perspective_blockdev_snapshot(params): |
217 |
"""Create a snapshot device. |
218 |
|
219 |
Note that this is only valid for LVM disks, if we get passed |
220 |
something else we raise an exception. The snapshot device can be |
221 |
remove by calling the generic block device remove call. |
222 |
|
223 |
""" |
224 |
cfbd = objects.Disk.FromDict(params[0]) |
225 |
return backend.BlockdevSnapshot(cfbd) |
226 |
|
227 |
@staticmethod |
228 |
def perspective_blockdev_grow(params): |
229 |
"""Grow a stack of devices. |
230 |
|
231 |
""" |
232 |
cfbd = objects.Disk.FromDict(params[0]) |
233 |
amount = params[1] |
234 |
return backend.BlockdevGrow(cfbd, amount) |
235 |
|
236 |
@staticmethod |
237 |
def perspective_blockdev_close(params): |
238 |
"""Closes the given block devices. |
239 |
|
240 |
""" |
241 |
disks = [objects.Disk.FromDict(cf) for cf in params[1]] |
242 |
return backend.BlockdevClose(params[0], disks) |
243 |
|
244 |
# blockdev/drbd specific methods ---------- |
245 |
|
246 |
@staticmethod |
247 |
def perspective_drbd_disconnect_net(params): |
248 |
"""Disconnects the network connection of drbd disks. |
249 |
|
250 |
Note that this is only valid for drbd disks, so the members of the |
251 |
disk list must all be drbd devices. |
252 |
|
253 |
""" |
254 |
nodes_ip, disks = params |
255 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
256 |
return backend.DrbdDisconnectNet(nodes_ip, disks) |
257 |
|
258 |
@staticmethod |
259 |
def perspective_drbd_attach_net(params): |
260 |
"""Attaches the network connection of drbd disks. |
261 |
|
262 |
Note that this is only valid for drbd disks, so the members of the |
263 |
disk list must all be drbd devices. |
264 |
|
265 |
""" |
266 |
nodes_ip, disks, instance_name, multimaster = params |
267 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
268 |
return backend.DrbdAttachNet(nodes_ip, disks, |
269 |
instance_name, multimaster) |
270 |
|
271 |
@staticmethod |
272 |
def perspective_drbd_wait_sync(params): |
273 |
"""Wait until DRBD disks are synched. |
274 |
|
275 |
Note that this is only valid for drbd disks, so the members of the |
276 |
disk list must all be drbd devices. |
277 |
|
278 |
""" |
279 |
nodes_ip, disks = params |
280 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
281 |
return backend.DrbdWaitSync(nodes_ip, disks) |
282 |
|
283 |
# export/import -------------------------- |
284 |
|
285 |
@staticmethod |
286 |
def perspective_snapshot_export(params): |
287 |
"""Export a given snapshot. |
288 |
|
289 |
""" |
290 |
disk = objects.Disk.FromDict(params[0]) |
291 |
dest_node = params[1] |
292 |
instance = objects.Instance.FromDict(params[2]) |
293 |
cluster_name = params[3] |
294 |
dev_idx = params[4] |
295 |
return backend.ExportSnapshot(disk, dest_node, instance, |
296 |
cluster_name, dev_idx) |
297 |
|
298 |
@staticmethod |
299 |
def perspective_finalize_export(params): |
300 |
"""Expose the finalize export functionality. |
301 |
|
302 |
""" |
303 |
instance = objects.Instance.FromDict(params[0]) |
304 |
snap_disks = [objects.Disk.FromDict(str_data) |
305 |
for str_data in params[1]] |
306 |
return backend.FinalizeExport(instance, snap_disks) |
307 |
|
308 |
@staticmethod |
309 |
def perspective_export_info(params): |
310 |
"""Query information about an existing export on this node. |
311 |
|
312 |
The given path may not contain an export, in which case we return |
313 |
None. |
314 |
|
315 |
""" |
316 |
path = params[0] |
317 |
return backend.ExportInfo(path) |
318 |
|
319 |
@staticmethod |
320 |
def perspective_export_list(params): |
321 |
"""List the available exports on this node. |
322 |
|
323 |
Note that as opposed to export_info, which may query data about an |
324 |
export in any path, this only queries the standard Ganeti path |
325 |
(constants.EXPORT_DIR). |
326 |
|
327 |
""" |
328 |
return backend.ListExports() |
329 |
|
330 |
@staticmethod |
331 |
def perspective_export_remove(params): |
332 |
"""Remove an export. |
333 |
|
334 |
""" |
335 |
export = params[0] |
336 |
return backend.RemoveExport(export) |
337 |
|
338 |
# volume -------------------------- |
339 |
|
340 |
@staticmethod |
341 |
def perspective_volume_list(params): |
342 |
"""Query the list of logical volumes in a given volume group. |
343 |
|
344 |
""" |
345 |
vgname = params[0] |
346 |
return True, backend.GetVolumeList(vgname) |
347 |
|
348 |
@staticmethod |
349 |
def perspective_vg_list(params): |
350 |
"""Query the list of volume groups. |
351 |
|
352 |
""" |
353 |
return backend.ListVolumeGroups() |
354 |
|
355 |
# bridge -------------------------- |
356 |
|
357 |
@staticmethod |
358 |
def perspective_bridges_exist(params): |
359 |
"""Check if all bridges given exist on this node. |
360 |
|
361 |
""" |
362 |
bridges_list = params[0] |
363 |
return backend.BridgesExist(bridges_list) |
364 |
|
365 |
# instance -------------------------- |
366 |
|
367 |
@staticmethod |
368 |
def perspective_instance_os_add(params): |
369 |
"""Install an OS on a given instance. |
370 |
|
371 |
""" |
372 |
inst_s = params[0] |
373 |
inst = objects.Instance.FromDict(inst_s) |
374 |
reinstall = params[1] |
375 |
return backend.InstanceOsAdd(inst, reinstall) |
376 |
|
377 |
@staticmethod |
378 |
def perspective_instance_run_rename(params): |
379 |
"""Runs the OS rename script for an instance. |
380 |
|
381 |
""" |
382 |
inst_s, old_name = params |
383 |
inst = objects.Instance.FromDict(inst_s) |
384 |
return backend.RunRenameInstance(inst, old_name) |
385 |
|
386 |
@staticmethod |
387 |
def perspective_instance_os_import(params): |
388 |
"""Run the import function of an OS onto a given instance. |
389 |
|
390 |
""" |
391 |
inst_s, src_node, src_images, cluster_name = params |
392 |
inst = objects.Instance.FromDict(inst_s) |
393 |
return backend.ImportOSIntoInstance(inst, src_node, src_images, |
394 |
cluster_name) |
395 |
|
396 |
@staticmethod |
397 |
def perspective_instance_shutdown(params): |
398 |
"""Shutdown an instance. |
399 |
|
400 |
""" |
401 |
instance = objects.Instance.FromDict(params[0]) |
402 |
return backend.InstanceShutdown(instance) |
403 |
|
404 |
@staticmethod |
405 |
def perspective_instance_start(params): |
406 |
"""Start an instance. |
407 |
|
408 |
""" |
409 |
instance = objects.Instance.FromDict(params[0]) |
410 |
return backend.StartInstance(instance) |
411 |
|
412 |
@staticmethod |
413 |
def perspective_migration_info(params): |
414 |
"""Gather information about an instance to be migrated. |
415 |
|
416 |
""" |
417 |
instance = objects.Instance.FromDict(params[0]) |
418 |
return backend.MigrationInfo(instance) |
419 |
|
420 |
@staticmethod |
421 |
def perspective_accept_instance(params): |
422 |
"""Prepare the node to accept an instance. |
423 |
|
424 |
""" |
425 |
instance, info, target = params |
426 |
instance = objects.Instance.FromDict(instance) |
427 |
return backend.AcceptInstance(instance, info, target) |
428 |
|
429 |
@staticmethod |
430 |
def perspective_finalize_migration(params): |
431 |
"""Finalize the instance migration. |
432 |
|
433 |
""" |
434 |
instance, info, success = params |
435 |
instance = objects.Instance.FromDict(instance) |
436 |
return backend.FinalizeMigration(instance, info, success) |
437 |
|
438 |
@staticmethod |
439 |
def perspective_instance_migrate(params): |
440 |
"""Migrates an instance. |
441 |
|
442 |
""" |
443 |
instance, target, live = params |
444 |
instance = objects.Instance.FromDict(instance) |
445 |
return backend.MigrateInstance(instance, target, live) |
446 |
|
447 |
@staticmethod |
448 |
def perspective_instance_reboot(params): |
449 |
"""Reboot an instance. |
450 |
|
451 |
""" |
452 |
instance = objects.Instance.FromDict(params[0]) |
453 |
reboot_type = params[1] |
454 |
return backend.InstanceReboot(instance, reboot_type) |
455 |
|
456 |
@staticmethod |
457 |
def perspective_instance_info(params): |
458 |
"""Query instance information. |
459 |
|
460 |
""" |
461 |
return backend.GetInstanceInfo(params[0], params[1]) |
462 |
|
463 |
@staticmethod |
464 |
def perspective_instance_migratable(params): |
465 |
"""Query whether the specified instance can be migrated. |
466 |
|
467 |
""" |
468 |
instance = objects.Instance.FromDict(params[0]) |
469 |
return backend.GetInstanceMigratable(instance) |
470 |
|
471 |
@staticmethod |
472 |
def perspective_all_instances_info(params): |
473 |
"""Query information about all instances. |
474 |
|
475 |
""" |
476 |
return backend.GetAllInstancesInfo(params[0]) |
477 |
|
478 |
@staticmethod |
479 |
def perspective_instance_list(params): |
480 |
"""Query the list of running instances. |
481 |
|
482 |
""" |
483 |
return True, backend.GetInstanceList(params[0]) |
484 |
|
485 |
# node -------------------------- |
486 |
|
487 |
@staticmethod |
488 |
def perspective_node_tcp_ping(params): |
489 |
"""Do a TcpPing on the remote node. |
490 |
|
491 |
""" |
492 |
return utils.TcpPing(params[1], params[2], timeout=params[3], |
493 |
live_port_needed=params[4], source=params[0]) |
494 |
|
495 |
@staticmethod |
496 |
def perspective_node_has_ip_address(params): |
497 |
"""Checks if a node has the given ip address. |
498 |
|
499 |
""" |
500 |
return True, utils.OwnIpAddress(params[0]) |
501 |
|
502 |
@staticmethod |
503 |
def perspective_node_info(params): |
504 |
"""Query node information. |
505 |
|
506 |
""" |
507 |
vgname, hypervisor_type = params |
508 |
return backend.GetNodeInfo(vgname, hypervisor_type) |
509 |
|
510 |
@staticmethod |
511 |
def perspective_node_add(params): |
512 |
"""Complete the registration of this node in the cluster. |
513 |
|
514 |
""" |
515 |
return backend.AddNode(params[0], params[1], params[2], |
516 |
params[3], params[4], params[5]) |
517 |
|
518 |
@staticmethod |
519 |
def perspective_node_verify(params): |
520 |
"""Run a verify sequence on this node. |
521 |
|
522 |
""" |
523 |
return backend.VerifyNode(params[0], params[1]) |
524 |
|
525 |
@staticmethod |
526 |
def perspective_node_start_master(params): |
527 |
"""Promote this node to master status. |
528 |
|
529 |
""" |
530 |
return backend.StartMaster(params[0]) |
531 |
|
532 |
@staticmethod |
533 |
def perspective_node_stop_master(params): |
534 |
"""Demote this node from master status. |
535 |
|
536 |
""" |
537 |
return backend.StopMaster(params[0]) |
538 |
|
539 |
@staticmethod |
540 |
def perspective_node_leave_cluster(params): |
541 |
"""Cleanup after leaving a cluster. |
542 |
|
543 |
""" |
544 |
return backend.LeaveCluster() |
545 |
|
546 |
@staticmethod |
547 |
def perspective_node_volumes(params): |
548 |
"""Query the list of all logical volume groups. |
549 |
|
550 |
""" |
551 |
return backend.NodeVolumes() |
552 |
|
553 |
@staticmethod |
554 |
def perspective_node_demote_from_mc(params): |
555 |
"""Demote a node from the master candidate role. |
556 |
|
557 |
""" |
558 |
return backend.DemoteFromMC() |
559 |
|
560 |
|
561 |
@staticmethod |
562 |
def perspective_node_powercycle(params): |
563 |
"""Tries to powercycle the nod. |
564 |
|
565 |
""" |
566 |
hypervisor_type = params[0] |
567 |
return backend.PowercycleNode(hypervisor_type) |
568 |
|
569 |
|
570 |
# cluster -------------------------- |
571 |
|
572 |
@staticmethod |
573 |
def perspective_version(params): |
574 |
"""Query version information. |
575 |
|
576 |
""" |
577 |
return True, constants.PROTOCOL_VERSION |
578 |
|
579 |
@staticmethod |
580 |
def perspective_upload_file(params): |
581 |
"""Upload a file. |
582 |
|
583 |
Note that the backend implementation imposes strict rules on which |
584 |
files are accepted. |
585 |
|
586 |
""" |
587 |
return backend.UploadFile(*params) |
588 |
|
589 |
@staticmethod |
590 |
def perspective_master_info(params): |
591 |
"""Query master information. |
592 |
|
593 |
""" |
594 |
return backend.GetMasterInfo() |
595 |
|
596 |
@staticmethod |
597 |
def perspective_write_ssconf_files(params): |
598 |
"""Write ssconf files. |
599 |
|
600 |
""" |
601 |
(values,) = params |
602 |
return backend.WriteSsconfFiles(values) |
603 |
|
604 |
# os ----------------------- |
605 |
|
606 |
@staticmethod |
607 |
def perspective_os_diagnose(params): |
608 |
"""Query detailed information about existing OSes. |
609 |
|
610 |
""" |
611 |
return [os_obj.ToDict() for os_obj in backend.DiagnoseOS()] |
612 |
|
613 |
@staticmethod |
614 |
def perspective_os_get(params): |
615 |
"""Query information about a given OS. |
616 |
|
617 |
""" |
618 |
name = params[0] |
619 |
try: |
620 |
os_obj = backend.OSFromDisk(name) |
621 |
except errors.InvalidOS, err: |
622 |
os_obj = objects.OS.FromInvalidOS(err) |
623 |
return os_obj.ToDict() |
624 |
|
625 |
# hooks ----------------------- |
626 |
|
627 |
@staticmethod |
628 |
def perspective_hooks_runner(params): |
629 |
"""Run hook scripts. |
630 |
|
631 |
""" |
632 |
hpath, phase, env = params |
633 |
hr = backend.HooksRunner() |
634 |
return hr.RunHooks(hpath, phase, env) |
635 |
|
636 |
# iallocator ----------------- |
637 |
|
638 |
@staticmethod |
639 |
def perspective_iallocator_runner(params): |
640 |
"""Run an iallocator script. |
641 |
|
642 |
""" |
643 |
name, idata = params |
644 |
iar = backend.IAllocatorRunner() |
645 |
return iar.Run(name, idata) |
646 |
|
647 |
# test ----------------------- |
648 |
|
649 |
@staticmethod |
650 |
def perspective_test_delay(params): |
651 |
"""Run test delay. |
652 |
|
653 |
""" |
654 |
duration = params[0] |
655 |
return utils.TestDelay(duration) |
656 |
|
657 |
# file storage --------------- |
658 |
|
659 |
@staticmethod |
660 |
def perspective_file_storage_dir_create(params): |
661 |
"""Create the file storage directory. |
662 |
|
663 |
""" |
664 |
file_storage_dir = params[0] |
665 |
return backend.CreateFileStorageDir(file_storage_dir) |
666 |
|
667 |
@staticmethod |
668 |
def perspective_file_storage_dir_remove(params): |
669 |
"""Remove the file storage directory. |
670 |
|
671 |
""" |
672 |
file_storage_dir = params[0] |
673 |
return backend.RemoveFileStorageDir(file_storage_dir) |
674 |
|
675 |
@staticmethod |
676 |
def perspective_file_storage_dir_rename(params): |
677 |
"""Rename the file storage directory. |
678 |
|
679 |
""" |
680 |
old_file_storage_dir = params[0] |
681 |
new_file_storage_dir = params[1] |
682 |
return backend.RenameFileStorageDir(old_file_storage_dir, |
683 |
new_file_storage_dir) |
684 |
|
685 |
# jobs ------------------------ |
686 |
|
687 |
@staticmethod |
688 |
@_RequireJobQueueLock |
689 |
def perspective_jobqueue_update(params): |
690 |
"""Update job queue. |
691 |
|
692 |
""" |
693 |
(file_name, content) = params |
694 |
return backend.JobQueueUpdate(file_name, content) |
695 |
|
696 |
@staticmethod |
697 |
@_RequireJobQueueLock |
698 |
def perspective_jobqueue_purge(params): |
699 |
"""Purge job queue. |
700 |
|
701 |
""" |
702 |
return backend.JobQueuePurge() |
703 |
|
704 |
@staticmethod |
705 |
@_RequireJobQueueLock |
706 |
def perspective_jobqueue_rename(params): |
707 |
"""Rename a job queue file. |
708 |
|
709 |
""" |
710 |
# TODO: What if a file fails to rename? |
711 |
return [backend.JobQueueRename(old, new) for old, new in params] |
712 |
|
713 |
@staticmethod |
714 |
def perspective_jobqueue_set_drain(params): |
715 |
"""Set/unset the queue drain flag. |
716 |
|
717 |
""" |
718 |
drain_flag = params[0] |
719 |
return backend.JobQueueSetDrainFlag(drain_flag) |
720 |
|
721 |
|
722 |
# hypervisor --------------- |
723 |
|
724 |
@staticmethod |
725 |
def perspective_hypervisor_validate_params(params): |
726 |
"""Validate the hypervisor parameters. |
727 |
|
728 |
""" |
729 |
(hvname, hvparams) = params |
730 |
return backend.ValidateHVParams(hvname, hvparams) |
731 |
|
732 |
|
733 |
def ParseOptions(): |
734 |
"""Parse the command line options. |
735 |
|
736 |
@return: (options, args) as from OptionParser.parse_args() |
737 |
|
738 |
""" |
739 |
parser = OptionParser(description="Ganeti node daemon", |
740 |
usage="%prog [-f] [-d] [-b ADDRESS]", |
741 |
version="%%prog (ganeti) %s" % |
742 |
constants.RELEASE_VERSION) |
743 |
|
744 |
parser.add_option("-f", "--foreground", dest="fork", |
745 |
help="Don't detach from the current terminal", |
746 |
default=True, action="store_false") |
747 |
parser.add_option("-d", "--debug", dest="debug", |
748 |
help="Enable some debug messages", |
749 |
default=False, action="store_true") |
750 |
parser.add_option("-b", "--bind", dest="bind_address", |
751 |
help="Bind address", |
752 |
default="", metavar="ADDRESS") |
753 |
|
754 |
options, args = parser.parse_args() |
755 |
return options, args |
756 |
|
757 |
|
758 |
def main(): |
759 |
"""Main function for the node daemon. |
760 |
|
761 |
""" |
762 |
global queue_lock |
763 |
|
764 |
options, args = ParseOptions() |
765 |
utils.debug = options.debug |
766 |
|
767 |
if options.fork: |
768 |
utils.CloseFDs() |
769 |
|
770 |
for fname in (constants.SSL_CERT_FILE,): |
771 |
if not os.path.isfile(fname): |
772 |
print "config %s not there, will not run." % fname |
773 |
sys.exit(5) |
774 |
|
775 |
try: |
776 |
port = utils.GetNodeDaemonPort() |
777 |
except errors.ConfigurationError, err: |
778 |
print "Cluster configuration incomplete: '%s'" % str(err) |
779 |
sys.exit(5) |
780 |
|
781 |
dirs = [(val, constants.RUN_DIRS_MODE) for val in constants.SUB_RUN_DIRS] |
782 |
dirs.append((constants.LOG_OS_DIR, 0750)) |
783 |
dirs.append((constants.LOCK_DIR, 1777)) |
784 |
utils.EnsureDirs(dirs) |
785 |
|
786 |
# become a daemon |
787 |
if options.fork: |
788 |
utils.Daemonize(logfile=constants.LOG_NODESERVER) |
789 |
|
790 |
utils.WritePidFile(constants.NODED_PID) |
791 |
try: |
792 |
utils.SetupLogging(logfile=constants.LOG_NODESERVER, debug=options.debug, |
793 |
stderr_logging=not options.fork) |
794 |
logging.info("ganeti node daemon startup") |
795 |
|
796 |
# Read SSL certificate |
797 |
ssl_params = http.HttpSslParams(ssl_key_path=constants.SSL_CERT_FILE, |
798 |
ssl_cert_path=constants.SSL_CERT_FILE) |
799 |
|
800 |
# Prepare job queue |
801 |
queue_lock = jstore.InitAndVerifyQueue(must_lock=False) |
802 |
|
803 |
mainloop = daemon.Mainloop() |
804 |
server = NodeHttpServer(mainloop, options.bind_address, port, |
805 |
ssl_params=ssl_params, ssl_verify_peer=True) |
806 |
server.Start() |
807 |
try: |
808 |
mainloop.Run() |
809 |
finally: |
810 |
server.Stop() |
811 |
finally: |
812 |
utils.RemovePidFile(constants.NODED_PID) |
813 |
|
814 |
|
815 |
if __name__ == '__main__': |
816 |
main() |