root / daemons / ganeti-noded @ 02bea2fc
History | View | Annotate | Download (22.8 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 |
# 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 |
|
| 49 |
import ganeti.http.server # pylint: disable-msg=W0611 |
| 50 |
|
| 51 |
|
| 52 |
queue_lock = None |
| 53 |
|
| 54 |
|
| 55 |
def _PrepareQueueLock(): |
| 56 |
"""Try to prepare the queue lock. |
| 57 |
|
| 58 |
@return: None for success, otherwise an exception object |
| 59 |
|
| 60 |
""" |
| 61 |
global queue_lock # pylint: disable-msg=W0603 |
| 62 |
|
| 63 |
if queue_lock is not None: |
| 64 |
return None |
| 65 |
|
| 66 |
# Prepare job queue |
| 67 |
try: |
| 68 |
queue_lock = jstore.InitAndVerifyQueue(must_lock=False) |
| 69 |
return None |
| 70 |
except EnvironmentError, err: |
| 71 |
return err |
| 72 |
|
| 73 |
|
| 74 |
def _RequireJobQueueLock(fn): |
| 75 |
"""Decorator for job queue manipulating functions. |
| 76 |
|
| 77 |
""" |
| 78 |
QUEUE_LOCK_TIMEOUT = 10 |
| 79 |
|
| 80 |
def wrapper(*args, **kwargs): |
| 81 |
# Locking in exclusive, blocking mode because there could be several |
| 82 |
# children running at the same time. Waiting up to 10 seconds. |
| 83 |
if _PrepareQueueLock() is not None: |
| 84 |
raise errors.JobQueueError("Job queue failed initialization,"
|
| 85 |
" cannot update jobs") |
| 86 |
queue_lock.Exclusive(blocking=True, timeout=QUEUE_LOCK_TIMEOUT) |
| 87 |
try: |
| 88 |
return fn(*args, **kwargs) |
| 89 |
finally: |
| 90 |
queue_lock.Unlock() |
| 91 |
|
| 92 |
return wrapper |
| 93 |
|
| 94 |
|
| 95 |
class NodeHttpServer(http.server.HttpServer): |
| 96 |
"""The server implementation. |
| 97 |
|
| 98 |
This class holds all methods exposed over the RPC interface. |
| 99 |
|
| 100 |
""" |
| 101 |
# too many public methods, and unused args - all methods get params |
| 102 |
# due to the API |
| 103 |
# pylint: disable-msg=R0904,W0613 |
| 104 |
def __init__(self, *args, **kwargs): |
| 105 |
http.server.HttpServer.__init__(self, *args, **kwargs) |
| 106 |
self.noded_pid = os.getpid() |
| 107 |
|
| 108 |
def HandleRequest(self, req): |
| 109 |
"""Handle a request. |
| 110 |
|
| 111 |
""" |
| 112 |
if req.request_method.upper() != http.HTTP_PUT: |
| 113 |
raise http.HttpBadRequest() |
| 114 |
|
| 115 |
path = req.request_path |
| 116 |
if path.startswith("/"):
|
| 117 |
path = path[1:] |
| 118 |
|
| 119 |
method = getattr(self, "perspective_%s" % path, None) |
| 120 |
if method is None: |
| 121 |
raise http.HttpNotFound() |
| 122 |
|
| 123 |
try: |
| 124 |
rvalue = method(req.request_body) |
| 125 |
return True, rvalue |
| 126 |
|
| 127 |
except backend.RPCFail, err: |
| 128 |
# our custom failure exception; str(err) works fine if the |
| 129 |
# exception was constructed with a single argument, and in |
| 130 |
# this case, err.message == err.args[0] == str(err) |
| 131 |
return (False, str(err)) |
| 132 |
except errors.QuitGanetiException, err: |
| 133 |
# Tell parent to quit |
| 134 |
logging.info("Shutting down the node daemon, arguments: %s",
|
| 135 |
str(err.args)) |
| 136 |
os.kill(self.noded_pid, signal.SIGTERM) |
| 137 |
# And return the error's arguments, which must be already in |
| 138 |
# correct tuple format |
| 139 |
return err.args |
| 140 |
except Exception, err: |
| 141 |
logging.exception("Error in RPC call")
|
| 142 |
return False, "Error while executing backend function: %s" % str(err) |
| 143 |
|
| 144 |
# the new block devices -------------------------- |
| 145 |
|
| 146 |
@staticmethod |
| 147 |
def perspective_blockdev_create(params): |
| 148 |
"""Create a block device. |
| 149 |
|
| 150 |
""" |
| 151 |
bdev_s, size, owner, on_primary, info = params |
| 152 |
bdev = objects.Disk.FromDict(bdev_s) |
| 153 |
if bdev is None: |
| 154 |
raise ValueError("can't unserialize data!")
|
| 155 |
return backend.BlockdevCreate(bdev, size, owner, on_primary, info) |
| 156 |
|
| 157 |
@staticmethod |
| 158 |
def perspective_blockdev_remove(params): |
| 159 |
"""Remove a block device. |
| 160 |
|
| 161 |
""" |
| 162 |
bdev_s = params[0] |
| 163 |
bdev = objects.Disk.FromDict(bdev_s) |
| 164 |
return backend.BlockdevRemove(bdev) |
| 165 |
|
| 166 |
@staticmethod |
| 167 |
def perspective_blockdev_rename(params): |
| 168 |
"""Remove a block device. |
| 169 |
|
| 170 |
""" |
| 171 |
devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params] |
| 172 |
return backend.BlockdevRename(devlist) |
| 173 |
|
| 174 |
@staticmethod |
| 175 |
def perspective_blockdev_assemble(params): |
| 176 |
"""Assemble a block device. |
| 177 |
|
| 178 |
""" |
| 179 |
bdev_s, owner, on_primary = params |
| 180 |
bdev = objects.Disk.FromDict(bdev_s) |
| 181 |
if bdev is None: |
| 182 |
raise ValueError("can't unserialize data!")
|
| 183 |
return backend.BlockdevAssemble(bdev, owner, on_primary) |
| 184 |
|
| 185 |
@staticmethod |
| 186 |
def perspective_blockdev_shutdown(params): |
| 187 |
"""Shutdown a block device. |
| 188 |
|
| 189 |
""" |
| 190 |
bdev_s = params[0] |
| 191 |
bdev = objects.Disk.FromDict(bdev_s) |
| 192 |
if bdev is None: |
| 193 |
raise ValueError("can't unserialize data!")
|
| 194 |
return backend.BlockdevShutdown(bdev) |
| 195 |
|
| 196 |
@staticmethod |
| 197 |
def perspective_blockdev_addchildren(params): |
| 198 |
"""Add a child to a mirror device. |
| 199 |
|
| 200 |
Note: this is only valid for mirror devices. It's the caller's duty |
| 201 |
to send a correct disk, otherwise we raise an error. |
| 202 |
|
| 203 |
""" |
| 204 |
bdev_s, ndev_s = params |
| 205 |
bdev = objects.Disk.FromDict(bdev_s) |
| 206 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
| 207 |
if bdev is None or ndevs.count(None) > 0: |
| 208 |
raise ValueError("can't unserialize data!")
|
| 209 |
return backend.BlockdevAddchildren(bdev, ndevs) |
| 210 |
|
| 211 |
@staticmethod |
| 212 |
def perspective_blockdev_removechildren(params): |
| 213 |
"""Remove a child from a mirror device. |
| 214 |
|
| 215 |
This is only valid for mirror devices, of course. It's the callers |
| 216 |
duty to send a correct disk, otherwise we raise an error. |
| 217 |
|
| 218 |
""" |
| 219 |
bdev_s, ndev_s = params |
| 220 |
bdev = objects.Disk.FromDict(bdev_s) |
| 221 |
ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
| 222 |
if bdev is None or ndevs.count(None) > 0: |
| 223 |
raise ValueError("can't unserialize data!")
|
| 224 |
return backend.BlockdevRemovechildren(bdev, ndevs) |
| 225 |
|
| 226 |
@staticmethod |
| 227 |
def perspective_blockdev_getmirrorstatus(params): |
| 228 |
"""Return the mirror status for a list of disks. |
| 229 |
|
| 230 |
""" |
| 231 |
disks = [objects.Disk.FromDict(dsk_s) |
| 232 |
for dsk_s in params] |
| 233 |
return [status.ToDict() |
| 234 |
for status in backend.BlockdevGetmirrorstatus(disks)] |
| 235 |
|
| 236 |
@staticmethod |
| 237 |
def perspective_blockdev_find(params): |
| 238 |
"""Expose the FindBlockDevice functionality for a disk. |
| 239 |
|
| 240 |
This will try to find but not activate a disk. |
| 241 |
|
| 242 |
""" |
| 243 |
disk = objects.Disk.FromDict(params[0]) |
| 244 |
|
| 245 |
result = backend.BlockdevFind(disk) |
| 246 |
if result is None: |
| 247 |
return None |
| 248 |
|
| 249 |
return result.ToDict() |
| 250 |
|
| 251 |
@staticmethod |
| 252 |
def perspective_blockdev_snapshot(params): |
| 253 |
"""Create a snapshot device. |
| 254 |
|
| 255 |
Note that this is only valid for LVM disks, if we get passed |
| 256 |
something else we raise an exception. The snapshot device can be |
| 257 |
remove by calling the generic block device remove call. |
| 258 |
|
| 259 |
""" |
| 260 |
cfbd = objects.Disk.FromDict(params[0]) |
| 261 |
return backend.BlockdevSnapshot(cfbd) |
| 262 |
|
| 263 |
@staticmethod |
| 264 |
def perspective_blockdev_grow(params): |
| 265 |
"""Grow a stack of devices. |
| 266 |
|
| 267 |
""" |
| 268 |
cfbd = objects.Disk.FromDict(params[0]) |
| 269 |
amount = params[1] |
| 270 |
return backend.BlockdevGrow(cfbd, amount) |
| 271 |
|
| 272 |
@staticmethod |
| 273 |
def perspective_blockdev_close(params): |
| 274 |
"""Closes the given block devices. |
| 275 |
|
| 276 |
""" |
| 277 |
disks = [objects.Disk.FromDict(cf) for cf in params[1]] |
| 278 |
return backend.BlockdevClose(params[0], disks) |
| 279 |
|
| 280 |
@staticmethod |
| 281 |
def perspective_blockdev_getsize(params): |
| 282 |
"""Compute the sizes of the given block devices. |
| 283 |
|
| 284 |
""" |
| 285 |
disks = [objects.Disk.FromDict(cf) for cf in params[0]] |
| 286 |
return backend.BlockdevGetsize(disks) |
| 287 |
|
| 288 |
@staticmethod |
| 289 |
def perspective_blockdev_export(params): |
| 290 |
"""Compute the sizes of the given block devices. |
| 291 |
|
| 292 |
""" |
| 293 |
disk = objects.Disk.FromDict(params[0]) |
| 294 |
dest_node, dest_path, cluster_name = params[1:] |
| 295 |
return backend.BlockdevExport(disk, dest_node, dest_path, cluster_name) |
| 296 |
|
| 297 |
# blockdev/drbd specific methods ---------- |
| 298 |
|
| 299 |
@staticmethod |
| 300 |
def perspective_drbd_disconnect_net(params): |
| 301 |
"""Disconnects the network connection of drbd disks. |
| 302 |
|
| 303 |
Note that this is only valid for drbd disks, so the members of the |
| 304 |
disk list must all be drbd devices. |
| 305 |
|
| 306 |
""" |
| 307 |
nodes_ip, disks = params |
| 308 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
| 309 |
return backend.DrbdDisconnectNet(nodes_ip, disks) |
| 310 |
|
| 311 |
@staticmethod |
| 312 |
def perspective_drbd_attach_net(params): |
| 313 |
"""Attaches the network connection of drbd disks. |
| 314 |
|
| 315 |
Note that this is only valid for drbd disks, so the members of the |
| 316 |
disk list must all be drbd devices. |
| 317 |
|
| 318 |
""" |
| 319 |
nodes_ip, disks, instance_name, multimaster = params |
| 320 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
| 321 |
return backend.DrbdAttachNet(nodes_ip, disks, |
| 322 |
instance_name, multimaster) |
| 323 |
|
| 324 |
@staticmethod |
| 325 |
def perspective_drbd_wait_sync(params): |
| 326 |
"""Wait until DRBD disks are synched. |
| 327 |
|
| 328 |
Note that this is only valid for drbd disks, so the members of the |
| 329 |
disk list must all be drbd devices. |
| 330 |
|
| 331 |
""" |
| 332 |
nodes_ip, disks = params |
| 333 |
disks = [objects.Disk.FromDict(cf) for cf in disks] |
| 334 |
return backend.DrbdWaitSync(nodes_ip, disks) |
| 335 |
|
| 336 |
# export/import -------------------------- |
| 337 |
|
| 338 |
@staticmethod |
| 339 |
def perspective_snapshot_export(params): |
| 340 |
"""Export a given snapshot. |
| 341 |
|
| 342 |
""" |
| 343 |
disk = objects.Disk.FromDict(params[0]) |
| 344 |
dest_node = params[1] |
| 345 |
instance = objects.Instance.FromDict(params[2]) |
| 346 |
cluster_name = params[3] |
| 347 |
dev_idx = params[4] |
| 348 |
debug = params[5] |
| 349 |
return backend.ExportSnapshot(disk, dest_node, instance, |
| 350 |
cluster_name, dev_idx, debug) |
| 351 |
|
| 352 |
@staticmethod |
| 353 |
def perspective_finalize_export(params): |
| 354 |
"""Expose the finalize export functionality. |
| 355 |
|
| 356 |
""" |
| 357 |
instance = objects.Instance.FromDict(params[0]) |
| 358 |
|
| 359 |
snap_disks = [] |
| 360 |
for disk in params[1]: |
| 361 |
if isinstance(disk, bool): |
| 362 |
snap_disks.append(disk) |
| 363 |
else: |
| 364 |
snap_disks.append(objects.Disk.FromDict(disk)) |
| 365 |
|
| 366 |
return backend.FinalizeExport(instance, snap_disks) |
| 367 |
|
| 368 |
@staticmethod |
| 369 |
def perspective_export_info(params): |
| 370 |
"""Query information about an existing export on this node. |
| 371 |
|
| 372 |
The given path may not contain an export, in which case we return |
| 373 |
None. |
| 374 |
|
| 375 |
""" |
| 376 |
path = params[0] |
| 377 |
return backend.ExportInfo(path) |
| 378 |
|
| 379 |
@staticmethod |
| 380 |
def perspective_export_list(params): |
| 381 |
"""List the available exports on this node. |
| 382 |
|
| 383 |
Note that as opposed to export_info, which may query data about an |
| 384 |
export in any path, this only queries the standard Ganeti path |
| 385 |
(constants.EXPORT_DIR). |
| 386 |
|
| 387 |
""" |
| 388 |
return backend.ListExports() |
| 389 |
|
| 390 |
@staticmethod |
| 391 |
def perspective_export_remove(params): |
| 392 |
"""Remove an export. |
| 393 |
|
| 394 |
""" |
| 395 |
export = params[0] |
| 396 |
return backend.RemoveExport(export) |
| 397 |
|
| 398 |
# volume -------------------------- |
| 399 |
|
| 400 |
@staticmethod |
| 401 |
def perspective_lv_list(params): |
| 402 |
"""Query the list of logical volumes in a given volume group. |
| 403 |
|
| 404 |
""" |
| 405 |
vgname = params[0] |
| 406 |
return backend.GetVolumeList(vgname) |
| 407 |
|
| 408 |
@staticmethod |
| 409 |
def perspective_vg_list(params): |
| 410 |
"""Query the list of volume groups. |
| 411 |
|
| 412 |
""" |
| 413 |
return backend.ListVolumeGroups() |
| 414 |
|
| 415 |
# Storage -------------------------- |
| 416 |
|
| 417 |
@staticmethod |
| 418 |
def perspective_storage_list(params): |
| 419 |
"""Get list of storage units. |
| 420 |
|
| 421 |
""" |
| 422 |
(su_name, su_args, name, fields) = params |
| 423 |
return storage.GetStorage(su_name, *su_args).List(name, fields) |
| 424 |
|
| 425 |
@staticmethod |
| 426 |
def perspective_storage_modify(params): |
| 427 |
"""Modify a storage unit. |
| 428 |
|
| 429 |
""" |
| 430 |
(su_name, su_args, name, changes) = params |
| 431 |
return storage.GetStorage(su_name, *su_args).Modify(name, changes) |
| 432 |
|
| 433 |
@staticmethod |
| 434 |
def perspective_storage_execute(params): |
| 435 |
"""Execute an operation on a storage unit. |
| 436 |
|
| 437 |
""" |
| 438 |
(su_name, su_args, name, op) = params |
| 439 |
return storage.GetStorage(su_name, *su_args).Execute(name, op) |
| 440 |
|
| 441 |
# bridge -------------------------- |
| 442 |
|
| 443 |
@staticmethod |
| 444 |
def perspective_bridges_exist(params): |
| 445 |
"""Check if all bridges given exist on this node. |
| 446 |
|
| 447 |
""" |
| 448 |
bridges_list = params[0] |
| 449 |
return backend.BridgesExist(bridges_list) |
| 450 |
|
| 451 |
# instance -------------------------- |
| 452 |
|
| 453 |
@staticmethod |
| 454 |
def perspective_instance_os_add(params): |
| 455 |
"""Install an OS on a given instance. |
| 456 |
|
| 457 |
""" |
| 458 |
inst_s = params[0] |
| 459 |
inst = objects.Instance.FromDict(inst_s) |
| 460 |
reinstall = params[1] |
| 461 |
debug = params[2] |
| 462 |
return backend.InstanceOsAdd(inst, reinstall, debug) |
| 463 |
|
| 464 |
@staticmethod |
| 465 |
def perspective_instance_run_rename(params): |
| 466 |
"""Runs the OS rename script for an instance. |
| 467 |
|
| 468 |
""" |
| 469 |
inst_s, old_name, debug = params |
| 470 |
inst = objects.Instance.FromDict(inst_s) |
| 471 |
return backend.RunRenameInstance(inst, old_name, debug) |
| 472 |
|
| 473 |
@staticmethod |
| 474 |
def perspective_instance_os_import(params): |
| 475 |
"""Run the import function of an OS onto a given instance. |
| 476 |
|
| 477 |
""" |
| 478 |
inst_s, src_node, src_images, cluster_name, debug = params |
| 479 |
inst = objects.Instance.FromDict(inst_s) |
| 480 |
return backend.ImportOSIntoInstance(inst, src_node, src_images, |
| 481 |
cluster_name, debug) |
| 482 |
|
| 483 |
@staticmethod |
| 484 |
def perspective_instance_shutdown(params): |
| 485 |
"""Shutdown an instance. |
| 486 |
|
| 487 |
""" |
| 488 |
instance = objects.Instance.FromDict(params[0]) |
| 489 |
timeout = params[1] |
| 490 |
return backend.InstanceShutdown(instance, timeout) |
| 491 |
|
| 492 |
@staticmethod |
| 493 |
def perspective_instance_start(params): |
| 494 |
"""Start an instance. |
| 495 |
|
| 496 |
""" |
| 497 |
instance = objects.Instance.FromDict(params[0]) |
| 498 |
return backend.StartInstance(instance) |
| 499 |
|
| 500 |
@staticmethod |
| 501 |
def perspective_migration_info(params): |
| 502 |
"""Gather information about an instance to be migrated. |
| 503 |
|
| 504 |
""" |
| 505 |
instance = objects.Instance.FromDict(params[0]) |
| 506 |
return backend.MigrationInfo(instance) |
| 507 |
|
| 508 |
@staticmethod |
| 509 |
def perspective_accept_instance(params): |
| 510 |
"""Prepare the node to accept an instance. |
| 511 |
|
| 512 |
""" |
| 513 |
instance, info, target = params |
| 514 |
instance = objects.Instance.FromDict(instance) |
| 515 |
return backend.AcceptInstance(instance, info, target) |
| 516 |
|
| 517 |
@staticmethod |
| 518 |
def perspective_finalize_migration(params): |
| 519 |
"""Finalize the instance migration. |
| 520 |
|
| 521 |
""" |
| 522 |
instance, info, success = params |
| 523 |
instance = objects.Instance.FromDict(instance) |
| 524 |
return backend.FinalizeMigration(instance, info, success) |
| 525 |
|
| 526 |
@staticmethod |
| 527 |
def perspective_instance_migrate(params): |
| 528 |
"""Migrates an instance. |
| 529 |
|
| 530 |
""" |
| 531 |
instance, target, live = params |
| 532 |
instance = objects.Instance.FromDict(instance) |
| 533 |
return backend.MigrateInstance(instance, target, live) |
| 534 |
|
| 535 |
@staticmethod |
| 536 |
def perspective_instance_reboot(params): |
| 537 |
"""Reboot an instance. |
| 538 |
|
| 539 |
""" |
| 540 |
instance = objects.Instance.FromDict(params[0]) |
| 541 |
reboot_type = params[1] |
| 542 |
shutdown_timeout = params[2] |
| 543 |
return backend.InstanceReboot(instance, reboot_type, shutdown_timeout) |
| 544 |
|
| 545 |
@staticmethod |
| 546 |
def perspective_instance_info(params): |
| 547 |
"""Query instance information. |
| 548 |
|
| 549 |
""" |
| 550 |
return backend.GetInstanceInfo(params[0], params[1]) |
| 551 |
|
| 552 |
@staticmethod |
| 553 |
def perspective_instance_migratable(params): |
| 554 |
"""Query whether the specified instance can be migrated. |
| 555 |
|
| 556 |
""" |
| 557 |
instance = objects.Instance.FromDict(params[0]) |
| 558 |
return backend.GetInstanceMigratable(instance) |
| 559 |
|
| 560 |
@staticmethod |
| 561 |
def perspective_all_instances_info(params): |
| 562 |
"""Query information about all instances. |
| 563 |
|
| 564 |
""" |
| 565 |
return backend.GetAllInstancesInfo(params[0]) |
| 566 |
|
| 567 |
@staticmethod |
| 568 |
def perspective_instance_list(params): |
| 569 |
"""Query the list of running instances. |
| 570 |
|
| 571 |
""" |
| 572 |
return backend.GetInstanceList(params[0]) |
| 573 |
|
| 574 |
# node -------------------------- |
| 575 |
|
| 576 |
@staticmethod |
| 577 |
def perspective_node_tcp_ping(params): |
| 578 |
"""Do a TcpPing on the remote node. |
| 579 |
|
| 580 |
""" |
| 581 |
return utils.TcpPing(params[1], params[2], timeout=params[3], |
| 582 |
live_port_needed=params[4], source=params[0]) |
| 583 |
|
| 584 |
@staticmethod |
| 585 |
def perspective_node_has_ip_address(params): |
| 586 |
"""Checks if a node has the given ip address. |
| 587 |
|
| 588 |
""" |
| 589 |
return utils.OwnIpAddress(params[0]) |
| 590 |
|
| 591 |
@staticmethod |
| 592 |
def perspective_node_info(params): |
| 593 |
"""Query node information. |
| 594 |
|
| 595 |
""" |
| 596 |
vgname, hypervisor_type = params |
| 597 |
return backend.GetNodeInfo(vgname, hypervisor_type) |
| 598 |
|
| 599 |
@staticmethod |
| 600 |
def perspective_node_add(params): |
| 601 |
"""Complete the registration of this node in the cluster. |
| 602 |
|
| 603 |
""" |
| 604 |
return backend.AddNode(params[0], params[1], params[2], |
| 605 |
params[3], params[4], params[5]) |
| 606 |
|
| 607 |
@staticmethod |
| 608 |
def perspective_node_verify(params): |
| 609 |
"""Run a verify sequence on this node. |
| 610 |
|
| 611 |
""" |
| 612 |
return backend.VerifyNode(params[0], params[1]) |
| 613 |
|
| 614 |
@staticmethod |
| 615 |
def perspective_node_start_master(params): |
| 616 |
"""Promote this node to master status. |
| 617 |
|
| 618 |
""" |
| 619 |
return backend.StartMaster(params[0], params[1]) |
| 620 |
|
| 621 |
@staticmethod |
| 622 |
def perspective_node_stop_master(params): |
| 623 |
"""Demote this node from master status. |
| 624 |
|
| 625 |
""" |
| 626 |
return backend.StopMaster(params[0]) |
| 627 |
|
| 628 |
@staticmethod |
| 629 |
def perspective_node_leave_cluster(params): |
| 630 |
"""Cleanup after leaving a cluster. |
| 631 |
|
| 632 |
""" |
| 633 |
return backend.LeaveCluster(params[0]) |
| 634 |
|
| 635 |
@staticmethod |
| 636 |
def perspective_node_volumes(params): |
| 637 |
"""Query the list of all logical volume groups. |
| 638 |
|
| 639 |
""" |
| 640 |
return backend.NodeVolumes() |
| 641 |
|
| 642 |
@staticmethod |
| 643 |
def perspective_node_demote_from_mc(params): |
| 644 |
"""Demote a node from the master candidate role. |
| 645 |
|
| 646 |
""" |
| 647 |
return backend.DemoteFromMC() |
| 648 |
|
| 649 |
|
| 650 |
@staticmethod |
| 651 |
def perspective_node_powercycle(params): |
| 652 |
"""Tries to powercycle the nod. |
| 653 |
|
| 654 |
""" |
| 655 |
hypervisor_type = params[0] |
| 656 |
return backend.PowercycleNode(hypervisor_type) |
| 657 |
|
| 658 |
|
| 659 |
# cluster -------------------------- |
| 660 |
|
| 661 |
@staticmethod |
| 662 |
def perspective_version(params): |
| 663 |
"""Query version information. |
| 664 |
|
| 665 |
""" |
| 666 |
return constants.PROTOCOL_VERSION |
| 667 |
|
| 668 |
@staticmethod |
| 669 |
def perspective_upload_file(params): |
| 670 |
"""Upload a file. |
| 671 |
|
| 672 |
Note that the backend implementation imposes strict rules on which |
| 673 |
files are accepted. |
| 674 |
|
| 675 |
""" |
| 676 |
return backend.UploadFile(*params) |
| 677 |
|
| 678 |
@staticmethod |
| 679 |
def perspective_master_info(params): |
| 680 |
"""Query master information. |
| 681 |
|
| 682 |
""" |
| 683 |
return backend.GetMasterInfo() |
| 684 |
|
| 685 |
@staticmethod |
| 686 |
def perspective_write_ssconf_files(params): |
| 687 |
"""Write ssconf files. |
| 688 |
|
| 689 |
""" |
| 690 |
(values,) = params |
| 691 |
return backend.WriteSsconfFiles(values) |
| 692 |
|
| 693 |
# os ----------------------- |
| 694 |
|
| 695 |
@staticmethod |
| 696 |
def perspective_os_diagnose(params): |
| 697 |
"""Query detailed information about existing OSes. |
| 698 |
|
| 699 |
""" |
| 700 |
return backend.DiagnoseOS() |
| 701 |
|
| 702 |
@staticmethod |
| 703 |
def perspective_os_get(params): |
| 704 |
"""Query information about a given OS. |
| 705 |
|
| 706 |
""" |
| 707 |
name = params[0] |
| 708 |
os_obj = backend.OSFromDisk(name) |
| 709 |
return os_obj.ToDict() |
| 710 |
|
| 711 |
# hooks ----------------------- |
| 712 |
|
| 713 |
@staticmethod |
| 714 |
def perspective_hooks_runner(params): |
| 715 |
"""Run hook scripts. |
| 716 |
|
| 717 |
""" |
| 718 |
hpath, phase, env = params |
| 719 |
hr = backend.HooksRunner() |
| 720 |
return hr.RunHooks(hpath, phase, env) |
| 721 |
|
| 722 |
# iallocator ----------------- |
| 723 |
|
| 724 |
@staticmethod |
| 725 |
def perspective_iallocator_runner(params): |
| 726 |
"""Run an iallocator script. |
| 727 |
|
| 728 |
""" |
| 729 |
name, idata = params |
| 730 |
iar = backend.IAllocatorRunner() |
| 731 |
return iar.Run(name, idata) |
| 732 |
|
| 733 |
# test ----------------------- |
| 734 |
|
| 735 |
@staticmethod |
| 736 |
def perspective_test_delay(params): |
| 737 |
"""Run test delay. |
| 738 |
|
| 739 |
""" |
| 740 |
duration = params[0] |
| 741 |
status, rval = utils.TestDelay(duration) |
| 742 |
if not status: |
| 743 |
raise backend.RPCFail(rval) |
| 744 |
return rval |
| 745 |
|
| 746 |
# file storage --------------- |
| 747 |
|
| 748 |
@staticmethod |
| 749 |
def perspective_file_storage_dir_create(params): |
| 750 |
"""Create the file storage directory. |
| 751 |
|
| 752 |
""" |
| 753 |
file_storage_dir = params[0] |
| 754 |
return backend.CreateFileStorageDir(file_storage_dir) |
| 755 |
|
| 756 |
@staticmethod |
| 757 |
def perspective_file_storage_dir_remove(params): |
| 758 |
"""Remove the file storage directory. |
| 759 |
|
| 760 |
""" |
| 761 |
file_storage_dir = params[0] |
| 762 |
return backend.RemoveFileStorageDir(file_storage_dir) |
| 763 |
|
| 764 |
@staticmethod |
| 765 |
def perspective_file_storage_dir_rename(params): |
| 766 |
"""Rename the file storage directory. |
| 767 |
|
| 768 |
""" |
| 769 |
old_file_storage_dir = params[0] |
| 770 |
new_file_storage_dir = params[1] |
| 771 |
return backend.RenameFileStorageDir(old_file_storage_dir, |
| 772 |
new_file_storage_dir) |
| 773 |
|
| 774 |
# jobs ------------------------ |
| 775 |
|
| 776 |
@staticmethod |
| 777 |
@_RequireJobQueueLock |
| 778 |
def perspective_jobqueue_update(params): |
| 779 |
"""Update job queue. |
| 780 |
|
| 781 |
""" |
| 782 |
(file_name, content) = params |
| 783 |
return backend.JobQueueUpdate(file_name, content) |
| 784 |
|
| 785 |
@staticmethod |
| 786 |
@_RequireJobQueueLock |
| 787 |
def perspective_jobqueue_purge(params): |
| 788 |
"""Purge job queue. |
| 789 |
|
| 790 |
""" |
| 791 |
return backend.JobQueuePurge() |
| 792 |
|
| 793 |
@staticmethod |
| 794 |
@_RequireJobQueueLock |
| 795 |
def perspective_jobqueue_rename(params): |
| 796 |
"""Rename a job queue file. |
| 797 |
|
| 798 |
""" |
| 799 |
# TODO: What if a file fails to rename? |
| 800 |
return [backend.JobQueueRename(old, new) for old, new in params] |
| 801 |
|
| 802 |
@staticmethod |
| 803 |
def perspective_jobqueue_set_drain(params): |
| 804 |
"""Set/unset the queue drain flag. |
| 805 |
|
| 806 |
""" |
| 807 |
drain_flag = params[0] |
| 808 |
return backend.JobQueueSetDrainFlag(drain_flag) |
| 809 |
|
| 810 |
|
| 811 |
# hypervisor --------------- |
| 812 |
|
| 813 |
@staticmethod |
| 814 |
def perspective_hypervisor_validate_params(params): |
| 815 |
"""Validate the hypervisor parameters. |
| 816 |
|
| 817 |
""" |
| 818 |
(hvname, hvparams) = params |
| 819 |
return backend.ValidateHVParams(hvname, hvparams) |
| 820 |
|
| 821 |
|
| 822 |
def CheckNoded(_, args): |
| 823 |
"""Initial checks whether to run or exit with a failure. |
| 824 |
|
| 825 |
""" |
| 826 |
if args: # noded doesn't take any arguments |
| 827 |
print >> sys.stderr, ("Usage: %s [-f] [-d] [-p port] [-b ADDRESS]" %
|
| 828 |
sys.argv[0]) |
| 829 |
sys.exit(constants.EXIT_FAILURE) |
| 830 |
|
| 831 |
|
| 832 |
def ExecNoded(options, _): |
| 833 |
"""Main node daemon function, executed with the PID file held. |
| 834 |
|
| 835 |
""" |
| 836 |
utils.Mlockall() |
| 837 |
|
| 838 |
# Read SSL certificate |
| 839 |
if options.ssl: |
| 840 |
ssl_params = http.HttpSslParams(ssl_key_path=options.ssl_key, |
| 841 |
ssl_cert_path=options.ssl_cert) |
| 842 |
else: |
| 843 |
ssl_params = None |
| 844 |
|
| 845 |
err = _PrepareQueueLock() |
| 846 |
if err is not None: |
| 847 |
# this might be some kind of file-system/permission error; while |
| 848 |
# this breaks the job queue functionality, we shouldn't prevent |
| 849 |
# startup of the whole node daemon because of this |
| 850 |
logging.critical("Can't init/verify the queue, proceeding anyway: %s", err)
|
| 851 |
|
| 852 |
mainloop = daemon.Mainloop() |
| 853 |
server = NodeHttpServer(mainloop, options.bind_address, options.port, |
| 854 |
ssl_params=ssl_params, ssl_verify_peer=True) |
| 855 |
server.Start() |
| 856 |
try: |
| 857 |
mainloop.Run() |
| 858 |
finally: |
| 859 |
server.Stop() |
| 860 |
|
| 861 |
|
| 862 |
def main(): |
| 863 |
"""Main function for the node daemon. |
| 864 |
|
| 865 |
""" |
| 866 |
parser = OptionParser(description="Ganeti node daemon", |
| 867 |
usage="%prog [-f] [-d] [-p port] [-b ADDRESS]", |
| 868 |
version="%%prog (ganeti) %s" % |
| 869 |
constants.RELEASE_VERSION) |
| 870 |
dirs = [(val, constants.RUN_DIRS_MODE) for val in constants.SUB_RUN_DIRS] |
| 871 |
dirs.append((constants.LOG_OS_DIR, 0750)) |
| 872 |
dirs.append((constants.LOCK_DIR, 1777)) |
| 873 |
daemon.GenericMain(constants.NODED, parser, dirs, CheckNoded, ExecNoded) |
| 874 |
|
| 875 |
|
| 876 |
if __name__ == '__main__': |
| 877 |
main() |