root / lib / server / noded.py @ cb8028f3
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# Copyright (C) 2006, 2007, 2010, 2011, 2012 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Ganeti node daemon"""
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# pylint: disable=C0103,W0142
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# C0103: Functions in this module need to have a given name structure,
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# and the name of the daemon doesn't match
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# W0142: Used * or ** magic, since we do use it extensively in this
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# module
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import os |
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import sys |
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import logging |
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import signal |
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import codecs |
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from optparse import OptionParser |
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from ganeti import backend |
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from ganeti import constants |
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from ganeti import objects |
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from ganeti import errors |
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from ganeti import jstore |
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from ganeti import daemon |
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from ganeti import http |
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from ganeti import utils |
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from ganeti.storage import container |
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from ganeti import serializer |
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from ganeti import netutils |
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from ganeti import pathutils |
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from ganeti import ssconf |
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import ganeti.http.server # pylint: disable=W0611 |
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queue_lock = None
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def _extendReasonTrail(trail, source, reason=""): |
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"""Extend the reason trail with noded information
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The trail is extended by appending the name of the noded functionality
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"""
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assert trail is not None |
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trail_source = "%s:%s" % (constants.OPCODE_REASON_SRC_NODED, source)
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trail.append((trail_source, reason, utils.EpochNano())) |
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def _PrepareQueueLock(): |
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"""Try to prepare the queue lock.
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@return: None for success, otherwise an exception object
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"""
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global queue_lock # pylint: disable=W0603 |
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if queue_lock is not None: |
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return None |
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# Prepare job queue
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try:
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queue_lock = jstore.InitAndVerifyQueue(must_lock=False)
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return None |
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except EnvironmentError, err: |
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return err
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def _RequireJobQueueLock(fn): |
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"""Decorator for job queue manipulating functions.
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"""
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QUEUE_LOCK_TIMEOUT = 10
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def wrapper(*args, **kwargs): |
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# Locking in exclusive, blocking mode because there could be several
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# children running at the same time. Waiting up to 10 seconds.
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if _PrepareQueueLock() is not None: |
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raise errors.JobQueueError("Job queue failed initialization," |
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" cannot update jobs")
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queue_lock.Exclusive(blocking=True, timeout=QUEUE_LOCK_TIMEOUT)
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try:
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return fn(*args, **kwargs)
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finally:
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queue_lock.Unlock() |
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return wrapper
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def _DecodeImportExportIO(ieio, ieioargs): |
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"""Decodes import/export I/O information.
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"""
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if ieio == constants.IEIO_RAW_DISK:
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assert len(ieioargs) == 1 |
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return (objects.Disk.FromDict(ieioargs[0]), ) |
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if ieio == constants.IEIO_SCRIPT:
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assert len(ieioargs) == 2 |
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return (objects.Disk.FromDict(ieioargs[0]), ieioargs[1]) |
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return ieioargs
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def _DefaultAlternative(value, default): |
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"""Returns value or, if evaluating to False, a default value.
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Returns the given value, unless it evaluates to False. In the latter case the
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default value is returned.
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@param value: Value to return if it doesn't evaluate to False
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@param default: Default value
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@return: Given value or the default
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"""
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if value:
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return value
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return default
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class MlockallRequestExecutor(http.server.HttpServerRequestExecutor): |
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"""Subclass ensuring request handlers are locked in RAM.
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"""
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def __init__(self, *args, **kwargs): |
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utils.Mlockall() |
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http.server.HttpServerRequestExecutor.__init__(self, *args, **kwargs)
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class NodeRequestHandler(http.server.HttpServerHandler): |
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"""The server implementation.
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This class holds all methods exposed over the RPC interface.
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"""
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# too many public methods, and unused args - all methods get params
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# due to the API
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# pylint: disable=R0904,W0613
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def __init__(self): |
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http.server.HttpServerHandler.__init__(self)
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self.noded_pid = os.getpid()
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def HandleRequest(self, req): |
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"""Handle a request.
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"""
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if req.request_method.upper() != http.HTTP_POST:
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raise http.HttpBadRequest("Only the POST method is supported") |
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path = req.request_path |
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if path.startswith("/"): |
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path = path[1:]
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method = getattr(self, "perspective_%s" % path, None) |
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if method is None: |
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raise http.HttpNotFound()
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try:
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result = (True, method(serializer.LoadJson(req.request_body)))
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except backend.RPCFail, err:
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# our custom failure exception; str(err) works fine if the
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# exception was constructed with a single argument, and in
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# this case, err.message == err.args[0] == str(err)
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result = (False, str(err)) |
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except errors.QuitGanetiException, err:
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# Tell parent to quit
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logging.info("Shutting down the node daemon, arguments: %s",
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str(err.args))
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os.kill(self.noded_pid, signal.SIGTERM)
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# And return the error's arguments, which must be already in
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# correct tuple format
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result = err.args |
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except Exception, err: |
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logging.exception("Error in RPC call")
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result = (False, "Error while executing backend function: %s" % str(err)) |
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return serializer.DumpJson(result)
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# the new block devices --------------------------
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@staticmethod
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def perspective_blockdev_create(params): |
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"""Create a block device.
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"""
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(bdev_s, size, owner, on_primary, info, excl_stor) = params |
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bdev = objects.Disk.FromDict(bdev_s) |
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if bdev is None: |
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raise ValueError("can't unserialize data!") |
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return backend.BlockdevCreate(bdev, size, owner, on_primary, info,
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excl_stor) |
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@staticmethod
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def perspective_blockdev_pause_resume_sync(params): |
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"""Pause/resume sync of a block device.
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"""
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disks_s, pause = params |
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disks = [objects.Disk.FromDict(bdev_s) for bdev_s in disks_s] |
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return backend.BlockdevPauseResumeSync(disks, pause)
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@staticmethod
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def perspective_blockdev_wipe(params): |
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"""Wipe a block device.
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"""
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bdev_s, offset, size = params |
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bdev = objects.Disk.FromDict(bdev_s) |
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return backend.BlockdevWipe(bdev, offset, size)
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@staticmethod
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def perspective_blockdev_remove(params): |
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"""Remove a block device.
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"""
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bdev_s = params[0]
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bdev = objects.Disk.FromDict(bdev_s) |
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return backend.BlockdevRemove(bdev)
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@staticmethod
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def perspective_blockdev_rename(params): |
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"""Remove a block device.
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"""
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devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params[0]] |
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return backend.BlockdevRename(devlist)
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@staticmethod
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def perspective_blockdev_assemble(params): |
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"""Assemble a block device.
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"""
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bdev_s, owner, on_primary, idx = params |
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bdev = objects.Disk.FromDict(bdev_s) |
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if bdev is None: |
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raise ValueError("can't unserialize data!") |
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return backend.BlockdevAssemble(bdev, owner, on_primary, idx)
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@staticmethod
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def perspective_blockdev_shutdown(params): |
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"""Shutdown a block device.
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"""
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bdev_s = params[0]
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bdev = objects.Disk.FromDict(bdev_s) |
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if bdev is None: |
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raise ValueError("can't unserialize data!") |
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return backend.BlockdevShutdown(bdev)
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@staticmethod
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def perspective_blockdev_addchildren(params): |
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"""Add a child to a mirror device.
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Note: this is only valid for mirror devices. It's the caller's duty
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to send a correct disk, otherwise we raise an error.
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"""
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bdev_s, ndev_s = params |
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bdev = objects.Disk.FromDict(bdev_s) |
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ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
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if bdev is None or ndevs.count(None) > 0: |
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raise ValueError("can't unserialize data!") |
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return backend.BlockdevAddchildren(bdev, ndevs)
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@staticmethod
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def perspective_blockdev_removechildren(params): |
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"""Remove a child from a mirror device.
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This is only valid for mirror devices, of course. It's the callers
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duty to send a correct disk, otherwise we raise an error.
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"""
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bdev_s, ndev_s = params |
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bdev = objects.Disk.FromDict(bdev_s) |
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ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s] |
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if bdev is None or ndevs.count(None) > 0: |
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raise ValueError("can't unserialize data!") |
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return backend.BlockdevRemovechildren(bdev, ndevs)
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@staticmethod
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def perspective_blockdev_getmirrorstatus(params): |
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"""Return the mirror status for a list of disks.
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"""
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disks = [objects.Disk.FromDict(dsk_s) |
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for dsk_s in params[0]] |
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return [status.ToDict()
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for status in backend.BlockdevGetmirrorstatus(disks)] |
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@staticmethod
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def perspective_blockdev_getmirrorstatus_multi(params): |
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"""Return the mirror status for a list of disks.
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"""
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(node_disks, ) = params |
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disks = [objects.Disk.FromDict(dsk_s) for dsk_s in node_disks] |
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result = [] |
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for (success, status) in backend.BlockdevGetmirrorstatusMulti(disks): |
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if success:
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result.append((success, status.ToDict())) |
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else:
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result.append((success, status)) |
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return result
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@staticmethod
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def perspective_blockdev_find(params): |
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"""Expose the FindBlockDevice functionality for a disk.
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This will try to find but not activate a disk.
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"""
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disk = objects.Disk.FromDict(params[0])
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result = backend.BlockdevFind(disk) |
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if result is None: |
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return None |
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return result.ToDict()
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@staticmethod
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def perspective_blockdev_snapshot(params): |
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"""Create a snapshot device.
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Note that this is only valid for LVM disks, if we get passed
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something else we raise an exception. The snapshot device can be
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remove by calling the generic block device remove call.
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"""
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cfbd = objects.Disk.FromDict(params[0])
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return backend.BlockdevSnapshot(cfbd)
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@staticmethod
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def perspective_blockdev_grow(params): |
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"""Grow a stack of devices.
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"""
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if len(params) < 5: |
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raise ValueError("Received only %s parameters in blockdev_grow," |
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" old master?" % len(params)) |
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cfbd = objects.Disk.FromDict(params[0])
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amount = params[1]
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dryrun = params[2]
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backingstore = params[3]
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excl_stor = params[4]
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return backend.BlockdevGrow(cfbd, amount, dryrun, backingstore, excl_stor)
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@staticmethod
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def perspective_blockdev_close(params): |
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"""Closes the given block devices.
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"""
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disks = [objects.Disk.FromDict(cf) for cf in params[1]] |
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return backend.BlockdevClose(params[0], disks) |
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@staticmethod
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def perspective_blockdev_getdimensions(params): |
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"""Compute the sizes of the given block devices.
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"""
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disks = [objects.Disk.FromDict(cf) for cf in params[0]] |
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return backend.BlockdevGetdimensions(disks)
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@staticmethod
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def perspective_blockdev_setinfo(params): |
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"""Sets metadata information on the given block device.
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"""
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(disk, info) = params |
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disk = objects.Disk.FromDict(disk) |
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return backend.BlockdevSetInfo(disk, info)
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# blockdev/drbd specific methods ----------
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@staticmethod
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def perspective_drbd_disconnect_net(params): |
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"""Disconnects the network connection of drbd disks.
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Note that this is only valid for drbd disks, so the members of the
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disk list must all be drbd devices.
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"""
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(disks,) = params |
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disks = [objects.Disk.FromDict(disk) for disk in disks] |
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return backend.DrbdDisconnectNet(disks)
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@staticmethod
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def perspective_drbd_attach_net(params): |
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"""Attaches the network connection of drbd disks.
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Note that this is only valid for drbd disks, so the members of the
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disk list must all be drbd devices.
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"""
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disks, instance_name, multimaster = params |
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disks = [objects.Disk.FromDict(disk) for disk in disks] |
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return backend.DrbdAttachNet(disks, instance_name, multimaster)
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@staticmethod
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def perspective_drbd_wait_sync(params): |
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"""Wait until DRBD disks are synched.
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Note that this is only valid for drbd disks, so the members of the
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disk list must all be drbd devices.
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"""
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(disks,) = params |
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disks = [objects.Disk.FromDict(disk) for disk in disks] |
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return backend.DrbdWaitSync(disks)
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@staticmethod
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def perspective_drbd_needs_activation(params): |
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"""Checks if the drbd devices need activation
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Note that this is only valid for drbd disks, so the members of the
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disk list must all be drbd devices.
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"""
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(disks,) = params |
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disks = [objects.Disk.FromDict(disk) for disk in disks] |
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return backend.DrbdNeedsActivation(disks)
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@staticmethod
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def perspective_drbd_helper(_): |
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"""Query drbd helper.
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"""
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return backend.GetDrbdUsermodeHelper()
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# export/import --------------------------
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@staticmethod
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def perspective_finalize_export(params): |
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"""Expose the finalize export functionality.
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"""
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instance = objects.Instance.FromDict(params[0])
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snap_disks = [] |
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for disk in params[1]: |
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if isinstance(disk, bool): |
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snap_disks.append(disk) |
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else:
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snap_disks.append(objects.Disk.FromDict(disk)) |
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return backend.FinalizeExport(instance, snap_disks)
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@staticmethod
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def perspective_export_info(params): |
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"""Query information about an existing export on this node.
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The given path may not contain an export, in which case we return
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None.
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"""
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path = params[0]
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return backend.ExportInfo(path)
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@staticmethod
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def perspective_export_list(params): |
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"""List the available exports on this node.
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Note that as opposed to export_info, which may query data about an
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export in any path, this only queries the standard Ganeti path
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(pathutils.EXPORT_DIR).
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"""
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return backend.ListExports()
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@staticmethod
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def perspective_export_remove(params): |
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"""Remove an export.
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"""
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export = params[0]
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return backend.RemoveExport(export)
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# block device ---------------------
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@staticmethod
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def perspective_bdev_sizes(params): |
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"""Query the list of block devices
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"""
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devices = params[0]
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return backend.GetBlockDevSizes(devices)
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# volume --------------------------
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@staticmethod
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def perspective_lv_list(params): |
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"""Query the list of logical volumes in a given volume group.
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"""
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vgname = params[0]
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return backend.GetVolumeList(vgname)
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@staticmethod
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def perspective_vg_list(params): |
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"""Query the list of volume groups.
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"""
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return backend.ListVolumeGroups()
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# Storage --------------------------
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@staticmethod
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def perspective_storage_list(params): |
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"""Get list of storage units.
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"""
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(su_name, su_args, name, fields) = params |
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return container.GetStorage(su_name, *su_args).List(name, fields)
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@staticmethod
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def perspective_storage_modify(params): |
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"""Modify a storage unit.
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"""
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(su_name, su_args, name, changes) = params |
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return container.GetStorage(su_name, *su_args).Modify(name, changes)
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@staticmethod
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def perspective_storage_execute(params): |
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"""Execute an operation on a storage unit.
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"""
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(su_name, su_args, name, op) = params |
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return container.GetStorage(su_name, *su_args).Execute(name, op)
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556 |
|
557 |
# bridge --------------------------
|
558 |
|
559 |
@staticmethod
|
560 |
def perspective_bridges_exist(params): |
561 |
"""Check if all bridges given exist on this node.
|
562 |
|
563 |
"""
|
564 |
bridges_list = params[0]
|
565 |
return backend.BridgesExist(bridges_list)
|
566 |
|
567 |
# instance --------------------------
|
568 |
|
569 |
@staticmethod
|
570 |
def perspective_instance_os_add(params): |
571 |
"""Install an OS on a given instance.
|
572 |
|
573 |
"""
|
574 |
inst_s = params[0]
|
575 |
inst = objects.Instance.FromDict(inst_s) |
576 |
reinstall = params[1]
|
577 |
debug = params[2]
|
578 |
return backend.InstanceOsAdd(inst, reinstall, debug)
|
579 |
|
580 |
@staticmethod
|
581 |
def perspective_instance_run_rename(params): |
582 |
"""Runs the OS rename script for an instance.
|
583 |
|
584 |
"""
|
585 |
inst_s, old_name, debug = params |
586 |
inst = objects.Instance.FromDict(inst_s) |
587 |
return backend.RunRenameInstance(inst, old_name, debug)
|
588 |
|
589 |
@staticmethod
|
590 |
def perspective_instance_shutdown(params): |
591 |
"""Shutdown an instance.
|
592 |
|
593 |
"""
|
594 |
instance = objects.Instance.FromDict(params[0])
|
595 |
timeout = params[1]
|
596 |
trail = params[2]
|
597 |
_extendReasonTrail(trail, "shutdown")
|
598 |
return backend.InstanceShutdown(instance, timeout, trail)
|
599 |
|
600 |
@staticmethod
|
601 |
def perspective_instance_start(params): |
602 |
"""Start an instance.
|
603 |
|
604 |
"""
|
605 |
(instance_name, startup_paused, trail) = params |
606 |
instance = objects.Instance.FromDict(instance_name) |
607 |
_extendReasonTrail(trail, "start")
|
608 |
return backend.StartInstance(instance, startup_paused, trail)
|
609 |
|
610 |
@staticmethod
|
611 |
def perspective_hotplug_device(params): |
612 |
"""Hotplugs device to a running instance.
|
613 |
|
614 |
"""
|
615 |
(idict, action, dev_type, ddict, extra, seq) = params |
616 |
instance = objects.Instance.FromDict(idict) |
617 |
if dev_type == constants.HOTPLUG_TARGET_DISK:
|
618 |
device = objects.Disk.FromDict(ddict) |
619 |
elif dev_type == constants.HOTPLUG_TARGET_NIC:
|
620 |
device = objects.NIC.FromDict(ddict) |
621 |
else:
|
622 |
assert dev_type in constants.HOTPLUG_ALL_TARGETS |
623 |
return backend.HotplugDevice(instance, action, dev_type, device, extra, seq)
|
624 |
|
625 |
@staticmethod
|
626 |
def perspective_hotplug_supported(params): |
627 |
"""Checks if hotplug is supported.
|
628 |
|
629 |
"""
|
630 |
instance = objects.Instance.FromDict(params[0])
|
631 |
return backend.HotplugSupported(instance)
|
632 |
|
633 |
@staticmethod
|
634 |
def perspective_migration_info(params): |
635 |
"""Gather information about an instance to be migrated.
|
636 |
|
637 |
"""
|
638 |
instance = objects.Instance.FromDict(params[0])
|
639 |
return backend.MigrationInfo(instance)
|
640 |
|
641 |
@staticmethod
|
642 |
def perspective_accept_instance(params): |
643 |
"""Prepare the node to accept an instance.
|
644 |
|
645 |
"""
|
646 |
instance, info, target = params |
647 |
instance = objects.Instance.FromDict(instance) |
648 |
return backend.AcceptInstance(instance, info, target)
|
649 |
|
650 |
@staticmethod
|
651 |
def perspective_instance_finalize_migration_dst(params): |
652 |
"""Finalize the instance migration on the destination node.
|
653 |
|
654 |
"""
|
655 |
instance, info, success = params |
656 |
instance = objects.Instance.FromDict(instance) |
657 |
return backend.FinalizeMigrationDst(instance, info, success)
|
658 |
|
659 |
@staticmethod
|
660 |
def perspective_instance_migrate(params): |
661 |
"""Migrates an instance.
|
662 |
|
663 |
"""
|
664 |
cluster_name, instance, target, live = params |
665 |
instance = objects.Instance.FromDict(instance) |
666 |
return backend.MigrateInstance(cluster_name, instance, target, live)
|
667 |
|
668 |
@staticmethod
|
669 |
def perspective_instance_finalize_migration_src(params): |
670 |
"""Finalize the instance migration on the source node.
|
671 |
|
672 |
"""
|
673 |
instance, success, live = params |
674 |
instance = objects.Instance.FromDict(instance) |
675 |
return backend.FinalizeMigrationSource(instance, success, live)
|
676 |
|
677 |
@staticmethod
|
678 |
def perspective_instance_get_migration_status(params): |
679 |
"""Reports migration status.
|
680 |
|
681 |
"""
|
682 |
instance = objects.Instance.FromDict(params[0])
|
683 |
return backend.GetMigrationStatus(instance).ToDict()
|
684 |
|
685 |
@staticmethod
|
686 |
def perspective_instance_reboot(params): |
687 |
"""Reboot an instance.
|
688 |
|
689 |
"""
|
690 |
instance = objects.Instance.FromDict(params[0])
|
691 |
reboot_type = params[1]
|
692 |
shutdown_timeout = params[2]
|
693 |
trail = params[3]
|
694 |
_extendReasonTrail(trail, "reboot")
|
695 |
return backend.InstanceReboot(instance, reboot_type, shutdown_timeout,
|
696 |
trail) |
697 |
|
698 |
@staticmethod
|
699 |
def perspective_instance_balloon_memory(params): |
700 |
"""Modify instance runtime memory.
|
701 |
|
702 |
"""
|
703 |
instance_dict, memory = params |
704 |
instance = objects.Instance.FromDict(instance_dict) |
705 |
return backend.InstanceBalloonMemory(instance, memory)
|
706 |
|
707 |
@staticmethod
|
708 |
def perspective_instance_info(params): |
709 |
"""Query instance information.
|
710 |
|
711 |
"""
|
712 |
(instance_name, hypervisor_name, hvparams) = params |
713 |
return backend.GetInstanceInfo(instance_name, hypervisor_name, hvparams)
|
714 |
|
715 |
@staticmethod
|
716 |
def perspective_instance_migratable(params): |
717 |
"""Query whether the specified instance can be migrated.
|
718 |
|
719 |
"""
|
720 |
instance = objects.Instance.FromDict(params[0])
|
721 |
return backend.GetInstanceMigratable(instance)
|
722 |
|
723 |
@staticmethod
|
724 |
def perspective_all_instances_info(params): |
725 |
"""Query information about all instances.
|
726 |
|
727 |
"""
|
728 |
(hypervisor_list, all_hvparams) = params |
729 |
return backend.GetAllInstancesInfo(hypervisor_list, all_hvparams)
|
730 |
|
731 |
@staticmethod
|
732 |
def perspective_instance_console_info(params): |
733 |
"""Query information on how to get console access to instances
|
734 |
|
735 |
"""
|
736 |
return backend.GetInstanceConsoleInfo(params)
|
737 |
|
738 |
@staticmethod
|
739 |
def perspective_instance_list(params): |
740 |
"""Query the list of running instances.
|
741 |
|
742 |
"""
|
743 |
(hypervisor_list, hvparams) = params |
744 |
return backend.GetInstanceList(hypervisor_list, hvparams)
|
745 |
|
746 |
# node --------------------------
|
747 |
|
748 |
@staticmethod
|
749 |
def perspective_node_has_ip_address(params): |
750 |
"""Checks if a node has the given ip address.
|
751 |
|
752 |
"""
|
753 |
return netutils.IPAddress.Own(params[0]) |
754 |
|
755 |
@staticmethod
|
756 |
def perspective_node_info(params): |
757 |
"""Query node information.
|
758 |
|
759 |
"""
|
760 |
(storage_units, hv_specs) = params |
761 |
return backend.GetNodeInfo(storage_units, hv_specs)
|
762 |
|
763 |
@staticmethod
|
764 |
def perspective_etc_hosts_modify(params): |
765 |
"""Modify a node entry in /etc/hosts.
|
766 |
|
767 |
"""
|
768 |
backend.EtcHostsModify(params[0], params[1], params[2]) |
769 |
|
770 |
return True |
771 |
|
772 |
@staticmethod
|
773 |
def perspective_node_verify(params): |
774 |
"""Run a verify sequence on this node.
|
775 |
|
776 |
"""
|
777 |
(what, cluster_name, hvparams, node_groups, groups_cfg) = params |
778 |
return backend.VerifyNode(what, cluster_name, hvparams,
|
779 |
node_groups, groups_cfg) |
780 |
|
781 |
@classmethod
|
782 |
def perspective_node_verify_light(cls, params): |
783 |
"""Run a light verify sequence on this node.
|
784 |
|
785 |
This call is meant to perform a less strict verification of the node in
|
786 |
certain situations. Right now, it is invoked only when a node is just about
|
787 |
to be added to a cluster, and even then, it performs the same checks as
|
788 |
L{perspective_node_verify}.
|
789 |
"""
|
790 |
return cls.perspective_node_verify(params)
|
791 |
|
792 |
@staticmethod
|
793 |
def perspective_node_start_master_daemons(params): |
794 |
"""Start the master daemons on this node.
|
795 |
|
796 |
"""
|
797 |
return backend.StartMasterDaemons(params[0]) |
798 |
|
799 |
@staticmethod
|
800 |
def perspective_node_activate_master_ip(params): |
801 |
"""Activate the master IP on this node.
|
802 |
|
803 |
"""
|
804 |
master_params = objects.MasterNetworkParameters.FromDict(params[0])
|
805 |
return backend.ActivateMasterIp(master_params, params[1]) |
806 |
|
807 |
@staticmethod
|
808 |
def perspective_node_deactivate_master_ip(params): |
809 |
"""Deactivate the master IP on this node.
|
810 |
|
811 |
"""
|
812 |
master_params = objects.MasterNetworkParameters.FromDict(params[0])
|
813 |
return backend.DeactivateMasterIp(master_params, params[1]) |
814 |
|
815 |
@staticmethod
|
816 |
def perspective_node_stop_master(params): |
817 |
"""Stops master daemons on this node.
|
818 |
|
819 |
"""
|
820 |
return backend.StopMasterDaemons()
|
821 |
|
822 |
@staticmethod
|
823 |
def perspective_node_change_master_netmask(params): |
824 |
"""Change the master IP netmask.
|
825 |
|
826 |
"""
|
827 |
return backend.ChangeMasterNetmask(params[0], params[1], params[2], |
828 |
params[3])
|
829 |
|
830 |
@staticmethod
|
831 |
def perspective_node_leave_cluster(params): |
832 |
"""Cleanup after leaving a cluster.
|
833 |
|
834 |
"""
|
835 |
return backend.LeaveCluster(params[0]) |
836 |
|
837 |
@staticmethod
|
838 |
def perspective_node_volumes(params): |
839 |
"""Query the list of all logical volume groups.
|
840 |
|
841 |
"""
|
842 |
return backend.NodeVolumes()
|
843 |
|
844 |
@staticmethod
|
845 |
def perspective_node_demote_from_mc(params): |
846 |
"""Demote a node from the master candidate role.
|
847 |
|
848 |
"""
|
849 |
return backend.DemoteFromMC()
|
850 |
|
851 |
@staticmethod
|
852 |
def perspective_node_powercycle(params): |
853 |
"""Tries to powercycle the node.
|
854 |
|
855 |
"""
|
856 |
(hypervisor_type, hvparams) = params |
857 |
return backend.PowercycleNode(hypervisor_type, hvparams)
|
858 |
|
859 |
@staticmethod
|
860 |
def perspective_node_configure_ovs(params): |
861 |
"""Sets up OpenvSwitch on the node.
|
862 |
|
863 |
"""
|
864 |
(ovs_name, ovs_link) = params |
865 |
return backend.ConfigureOVS(ovs_name, ovs_link)
|
866 |
|
867 |
@staticmethod
|
868 |
def perspective_node_crypto_tokens(params): |
869 |
"""Gets the node's public crypto tokens.
|
870 |
|
871 |
"""
|
872 |
token_requests = params[0]
|
873 |
return backend.GetCryptoTokens(token_requests)
|
874 |
|
875 |
# cluster --------------------------
|
876 |
|
877 |
@staticmethod
|
878 |
def perspective_version(params): |
879 |
"""Query version information.
|
880 |
|
881 |
"""
|
882 |
return constants.PROTOCOL_VERSION
|
883 |
|
884 |
@staticmethod
|
885 |
def perspective_upload_file(params): |
886 |
"""Upload a file.
|
887 |
|
888 |
Note that the backend implementation imposes strict rules on which
|
889 |
files are accepted.
|
890 |
|
891 |
"""
|
892 |
return backend.UploadFile(*(params[0])) |
893 |
|
894 |
@staticmethod
|
895 |
def perspective_master_node_name(params): |
896 |
"""Returns the master node name.
|
897 |
|
898 |
"""
|
899 |
return backend.GetMasterNodeName()
|
900 |
|
901 |
@staticmethod
|
902 |
def perspective_run_oob(params): |
903 |
"""Runs oob on node.
|
904 |
|
905 |
"""
|
906 |
output = backend.RunOob(params[0], params[1], params[2], params[3]) |
907 |
if output:
|
908 |
result = serializer.LoadJson(output) |
909 |
else:
|
910 |
result = None
|
911 |
return result
|
912 |
|
913 |
@staticmethod
|
914 |
def perspective_restricted_command(params): |
915 |
"""Runs a restricted command.
|
916 |
|
917 |
"""
|
918 |
(cmd, ) = params |
919 |
|
920 |
return backend.RunRestrictedCmd(cmd)
|
921 |
|
922 |
@staticmethod
|
923 |
def perspective_write_ssconf_files(params): |
924 |
"""Write ssconf files.
|
925 |
|
926 |
"""
|
927 |
(values,) = params |
928 |
return ssconf.WriteSsconfFiles(values)
|
929 |
|
930 |
@staticmethod
|
931 |
def perspective_get_watcher_pause(params): |
932 |
"""Get watcher pause end.
|
933 |
|
934 |
"""
|
935 |
return utils.ReadWatcherPauseFile(pathutils.WATCHER_PAUSEFILE)
|
936 |
|
937 |
@staticmethod
|
938 |
def perspective_set_watcher_pause(params): |
939 |
"""Set watcher pause.
|
940 |
|
941 |
"""
|
942 |
(until, ) = params |
943 |
return backend.SetWatcherPause(until)
|
944 |
|
945 |
# os -----------------------
|
946 |
|
947 |
@staticmethod
|
948 |
def perspective_os_diagnose(params): |
949 |
"""Query detailed information about existing OSes.
|
950 |
|
951 |
"""
|
952 |
return backend.DiagnoseOS()
|
953 |
|
954 |
@staticmethod
|
955 |
def perspective_os_get(params): |
956 |
"""Query information about a given OS.
|
957 |
|
958 |
"""
|
959 |
name = params[0]
|
960 |
os_obj = backend.OSFromDisk(name) |
961 |
return os_obj.ToDict()
|
962 |
|
963 |
@staticmethod
|
964 |
def perspective_os_validate(params): |
965 |
"""Run a given OS' validation routine.
|
966 |
|
967 |
"""
|
968 |
required, name, checks, params = params |
969 |
return backend.ValidateOS(required, name, checks, params)
|
970 |
|
971 |
# extstorage -----------------------
|
972 |
|
973 |
@staticmethod
|
974 |
def perspective_extstorage_diagnose(params): |
975 |
"""Query detailed information about existing extstorage providers.
|
976 |
|
977 |
"""
|
978 |
return backend.DiagnoseExtStorage()
|
979 |
|
980 |
# hooks -----------------------
|
981 |
|
982 |
@staticmethod
|
983 |
def perspective_hooks_runner(params): |
984 |
"""Run hook scripts.
|
985 |
|
986 |
"""
|
987 |
hpath, phase, env = params |
988 |
hr = backend.HooksRunner() |
989 |
return hr.RunHooks(hpath, phase, env)
|
990 |
|
991 |
# iallocator -----------------
|
992 |
|
993 |
@staticmethod
|
994 |
def perspective_iallocator_runner(params): |
995 |
"""Run an iallocator script.
|
996 |
|
997 |
"""
|
998 |
name, idata, ial_params_dict = params |
999 |
ial_params = [] |
1000 |
for ial_param in ial_params_dict.items(): |
1001 |
ial_params.append("--" + ial_param[0] + "=" + ial_param[1]) |
1002 |
iar = backend.IAllocatorRunner() |
1003 |
return iar.Run(name, idata, ial_params)
|
1004 |
|
1005 |
# test -----------------------
|
1006 |
|
1007 |
@staticmethod
|
1008 |
def perspective_test_delay(params): |
1009 |
"""Run test delay.
|
1010 |
|
1011 |
"""
|
1012 |
duration = params[0]
|
1013 |
status, rval = utils.TestDelay(duration) |
1014 |
if not status: |
1015 |
raise backend.RPCFail(rval)
|
1016 |
return rval
|
1017 |
|
1018 |
# file storage ---------------
|
1019 |
|
1020 |
@staticmethod
|
1021 |
def perspective_file_storage_dir_create(params): |
1022 |
"""Create the file storage directory.
|
1023 |
|
1024 |
"""
|
1025 |
file_storage_dir = params[0]
|
1026 |
return backend.CreateFileStorageDir(file_storage_dir)
|
1027 |
|
1028 |
@staticmethod
|
1029 |
def perspective_file_storage_dir_remove(params): |
1030 |
"""Remove the file storage directory.
|
1031 |
|
1032 |
"""
|
1033 |
file_storage_dir = params[0]
|
1034 |
return backend.RemoveFileStorageDir(file_storage_dir)
|
1035 |
|
1036 |
@staticmethod
|
1037 |
def perspective_file_storage_dir_rename(params): |
1038 |
"""Rename the file storage directory.
|
1039 |
|
1040 |
"""
|
1041 |
old_file_storage_dir = params[0]
|
1042 |
new_file_storage_dir = params[1]
|
1043 |
return backend.RenameFileStorageDir(old_file_storage_dir,
|
1044 |
new_file_storage_dir) |
1045 |
|
1046 |
# jobs ------------------------
|
1047 |
|
1048 |
@staticmethod
|
1049 |
@_RequireJobQueueLock
|
1050 |
def perspective_jobqueue_update(params): |
1051 |
"""Update job queue.
|
1052 |
|
1053 |
"""
|
1054 |
(file_name, content) = params |
1055 |
return backend.JobQueueUpdate(file_name, content)
|
1056 |
|
1057 |
@staticmethod
|
1058 |
@_RequireJobQueueLock
|
1059 |
def perspective_jobqueue_purge(params): |
1060 |
"""Purge job queue.
|
1061 |
|
1062 |
"""
|
1063 |
return backend.JobQueuePurge()
|
1064 |
|
1065 |
@staticmethod
|
1066 |
@_RequireJobQueueLock
|
1067 |
def perspective_jobqueue_rename(params): |
1068 |
"""Rename a job queue file.
|
1069 |
|
1070 |
"""
|
1071 |
# TODO: What if a file fails to rename?
|
1072 |
return [backend.JobQueueRename(old, new) for old, new in params[0]] |
1073 |
|
1074 |
@staticmethod
|
1075 |
@_RequireJobQueueLock
|
1076 |
def perspective_jobqueue_set_drain_flag(params): |
1077 |
"""Set job queue's drain flag.
|
1078 |
|
1079 |
"""
|
1080 |
(flag, ) = params |
1081 |
|
1082 |
return jstore.SetDrainFlag(flag)
|
1083 |
|
1084 |
# hypervisor ---------------
|
1085 |
|
1086 |
@staticmethod
|
1087 |
def perspective_hypervisor_validate_params(params): |
1088 |
"""Validate the hypervisor parameters.
|
1089 |
|
1090 |
"""
|
1091 |
(hvname, hvparams) = params |
1092 |
return backend.ValidateHVParams(hvname, hvparams)
|
1093 |
|
1094 |
# Crypto
|
1095 |
|
1096 |
@staticmethod
|
1097 |
def perspective_x509_cert_create(params): |
1098 |
"""Creates a new X509 certificate for SSL/TLS.
|
1099 |
|
1100 |
"""
|
1101 |
(validity, ) = params |
1102 |
return backend.CreateX509Certificate(validity)
|
1103 |
|
1104 |
@staticmethod
|
1105 |
def perspective_x509_cert_remove(params): |
1106 |
"""Removes a X509 certificate.
|
1107 |
|
1108 |
"""
|
1109 |
(name, ) = params |
1110 |
return backend.RemoveX509Certificate(name)
|
1111 |
|
1112 |
# Import and export
|
1113 |
|
1114 |
@staticmethod
|
1115 |
def perspective_import_start(params): |
1116 |
"""Starts an import daemon.
|
1117 |
|
1118 |
"""
|
1119 |
(opts_s, instance, component, (dest, dest_args)) = params |
1120 |
|
1121 |
opts = objects.ImportExportOptions.FromDict(opts_s) |
1122 |
|
1123 |
return backend.StartImportExportDaemon(constants.IEM_IMPORT, opts,
|
1124 |
None, None, |
1125 |
objects.Instance.FromDict(instance), |
1126 |
component, dest, |
1127 |
_DecodeImportExportIO(dest, |
1128 |
dest_args)) |
1129 |
|
1130 |
@staticmethod
|
1131 |
def perspective_export_start(params): |
1132 |
"""Starts an export daemon.
|
1133 |
|
1134 |
"""
|
1135 |
(opts_s, host, port, instance, component, (source, source_args)) = params |
1136 |
|
1137 |
opts = objects.ImportExportOptions.FromDict(opts_s) |
1138 |
|
1139 |
return backend.StartImportExportDaemon(constants.IEM_EXPORT, opts,
|
1140 |
host, port, |
1141 |
objects.Instance.FromDict(instance), |
1142 |
component, source, |
1143 |
_DecodeImportExportIO(source, |
1144 |
source_args)) |
1145 |
|
1146 |
@staticmethod
|
1147 |
def perspective_impexp_status(params): |
1148 |
"""Retrieves the status of an import or export daemon.
|
1149 |
|
1150 |
"""
|
1151 |
return backend.GetImportExportStatus(params[0]) |
1152 |
|
1153 |
@staticmethod
|
1154 |
def perspective_impexp_abort(params): |
1155 |
"""Aborts an import or export.
|
1156 |
|
1157 |
"""
|
1158 |
return backend.AbortImportExport(params[0]) |
1159 |
|
1160 |
@staticmethod
|
1161 |
def perspective_impexp_cleanup(params): |
1162 |
"""Cleans up after an import or export.
|
1163 |
|
1164 |
"""
|
1165 |
return backend.CleanupImportExport(params[0]) |
1166 |
|
1167 |
|
1168 |
def CheckNoded(_, args): |
1169 |
"""Initial checks whether to run or exit with a failure.
|
1170 |
|
1171 |
"""
|
1172 |
if args: # noded doesn't take any arguments |
1173 |
print >> sys.stderr, ("Usage: %s [-f] [-d] [-p port] [-b ADDRESS]" % |
1174 |
sys.argv[0])
|
1175 |
sys.exit(constants.EXIT_FAILURE) |
1176 |
try:
|
1177 |
codecs.lookup("string-escape")
|
1178 |
except LookupError: |
1179 |
print >> sys.stderr, ("Can't load the string-escape code which is part" |
1180 |
" of the Python installation. Is your installation"
|
1181 |
" complete/correct? Aborting.")
|
1182 |
sys.exit(constants.EXIT_FAILURE) |
1183 |
|
1184 |
|
1185 |
def SSLVerifyPeer(conn, cert, errnum, errdepth, ok): |
1186 |
"""Callback function to verify a peer against the candidate cert map.
|
1187 |
|
1188 |
Note that we have a chicken-and-egg problem during cluster init and upgrade.
|
1189 |
This method checks whether the incoming connection comes from a master
|
1190 |
candidate by comparing it to the master certificate map in the cluster
|
1191 |
configuration. However, during cluster init and cluster upgrade there
|
1192 |
are various RPC calls done to the master node itself, before the candidate
|
1193 |
certificate list is established and the cluster configuration is written.
|
1194 |
In this case, we cannot check against the master candidate map.
|
1195 |
|
1196 |
This problem is solved by checking whether the candidate map is empty. An
|
1197 |
initialized 2.11 or higher cluster has at least one entry for the master
|
1198 |
node in the candidate map. If the map is empty, we know that we are still
|
1199 |
in the bootstrap/upgrade phase. In this case, we read the server certificate
|
1200 |
digest and compare it to the incoming request.
|
1201 |
|
1202 |
This means that after an upgrade of Ganeti, the system continues to operate
|
1203 |
like before, using server certificates only. After the client certificates
|
1204 |
are generated with ``gnt-cluster renew-crypto --new-node-certificates``,
|
1205 |
RPC communication is switched to using client certificates and the trick of
|
1206 |
using server certificates does not work anymore.
|
1207 |
|
1208 |
@type conn: C{OpenSSL.SSL.Connection}
|
1209 |
@param conn: the OpenSSL connection object
|
1210 |
@type cert: C{OpenSSL.X509}
|
1211 |
@param cert: the peer's SSL certificate
|
1212 |
|
1213 |
"""
|
1214 |
# some parameters are unused, but this is the API
|
1215 |
# pylint: disable=W0613
|
1216 |
_BOOTSTRAP = "bootstrap"
|
1217 |
sstore = ssconf.SimpleStore() |
1218 |
try:
|
1219 |
candidate_certs = sstore.GetMasterCandidatesCertMap() |
1220 |
except errors.ConfigurationError:
|
1221 |
logging.info("No candidate certificates found. Switching to "
|
1222 |
"bootstrap/update mode.")
|
1223 |
candidate_certs = None
|
1224 |
if not candidate_certs: |
1225 |
candidate_certs = { |
1226 |
_BOOTSTRAP: utils.GetCertificateDigest( |
1227 |
cert_filename=pathutils.NODED_CERT_FILE)} |
1228 |
return cert.digest("sha1") in candidate_certs.values() |
1229 |
# pylint: enable=W0613
|
1230 |
|
1231 |
|
1232 |
def PrepNoded(options, _): |
1233 |
"""Preparation node daemon function, executed with the PID file held.
|
1234 |
|
1235 |
"""
|
1236 |
if options.mlock:
|
1237 |
request_executor_class = MlockallRequestExecutor |
1238 |
try:
|
1239 |
utils.Mlockall() |
1240 |
except errors.NoCtypesError:
|
1241 |
logging.warning("Cannot set memory lock, ctypes module not found")
|
1242 |
request_executor_class = http.server.HttpServerRequestExecutor |
1243 |
else:
|
1244 |
request_executor_class = http.server.HttpServerRequestExecutor |
1245 |
|
1246 |
# Read SSL certificate
|
1247 |
if options.ssl:
|
1248 |
ssl_params = http.HttpSslParams(ssl_key_path=options.ssl_key, |
1249 |
ssl_cert_path=options.ssl_cert) |
1250 |
else:
|
1251 |
ssl_params = None
|
1252 |
|
1253 |
err = _PrepareQueueLock() |
1254 |
if err is not None: |
1255 |
# this might be some kind of file-system/permission error; while
|
1256 |
# this breaks the job queue functionality, we shouldn't prevent
|
1257 |
# startup of the whole node daemon because of this
|
1258 |
logging.critical("Can't init/verify the queue, proceeding anyway: %s", err)
|
1259 |
|
1260 |
handler = NodeRequestHandler() |
1261 |
|
1262 |
mainloop = daemon.Mainloop() |
1263 |
server = \ |
1264 |
http.server.HttpServer(mainloop, options.bind_address, options.port, |
1265 |
handler, ssl_params=ssl_params, ssl_verify_peer=True,
|
1266 |
request_executor_class=request_executor_class, |
1267 |
ssl_verify_callback=SSLVerifyPeer) |
1268 |
server.Start() |
1269 |
|
1270 |
return (mainloop, server)
|
1271 |
|
1272 |
|
1273 |
def ExecNoded(options, args, prep_data): # pylint: disable=W0613 |
1274 |
"""Main node daemon function, executed with the PID file held.
|
1275 |
|
1276 |
"""
|
1277 |
(mainloop, server) = prep_data |
1278 |
try:
|
1279 |
mainloop.Run() |
1280 |
finally:
|
1281 |
server.Stop() |
1282 |
|
1283 |
|
1284 |
def Main(): |
1285 |
"""Main function for the node daemon.
|
1286 |
|
1287 |
"""
|
1288 |
parser = OptionParser(description="Ganeti node daemon",
|
1289 |
usage=("%prog [-f] [-d] [-p port] [-b ADDRESS]"
|
1290 |
" [-i INTERFACE]"),
|
1291 |
version="%%prog (ganeti) %s" %
|
1292 |
constants.RELEASE_VERSION) |
1293 |
parser.add_option("--no-mlock", dest="mlock", |
1294 |
help="Do not mlock the node memory in ram",
|
1295 |
default=True, action="store_false") |
1296 |
|
1297 |
daemon.GenericMain(constants.NODED, parser, CheckNoded, PrepNoded, ExecNoded, |
1298 |
default_ssl_cert=pathutils.NODED_CERT_FILE, |
1299 |
default_ssl_key=pathutils.NODED_CERT_FILE, |
1300 |
console_logging=True)
|