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#!/usr/bin/python |
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# |
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# Copyright (C) 2006, 2007 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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|
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|
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"""Ganeti node daemon""" |
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|
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# pylint: disable-msg=C0103,W0142 |
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|
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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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|
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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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|
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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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|
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from optparse import OptionParser |
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|
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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 import storage |
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|
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import ganeti.http.server # pylint: disable-msg=W0611 |
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|
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|
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queue_lock = None |
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|
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|
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def _PrepareQueueLock(): |
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"""Try to prepare the queue lock. |
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|
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@return: None for success, otherwise an exception object |
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|
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""" |
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global queue_lock # pylint: disable-msg=W0603 |
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|
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if queue_lock is not None: |
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return None |
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|
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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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|
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|
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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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""" |
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QUEUE_LOCK_TIMEOUT = 10 |
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|
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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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|
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return wrapper |
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|
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|
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class MlockallRequestExecutor(http.server.HttpServerRequestExecutor): |
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"""Custom Request Executor class that ensures NodeHttpServer children are |
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locked in ram. |
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|
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""" |
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def __init__(self, *args, **kwargs): |
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utils.Mlockall() |
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|
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http.server.HttpServerRequestExecutor.__init__(self, *args, **kwargs) |
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|
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|
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class NodeHttpServer(http.server.HttpServer): |
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"""The server implementation. |
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|
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This class holds all methods exposed over the RPC interface. |
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|
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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-msg=R0904,W0613 |
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def __init__(self, *args, **kwargs): |
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http.server.HttpServer.__init__(self, *args, **kwargs) |
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self.noded_pid = os.getpid() |
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|
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def HandleRequest(self, req): |
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"""Handle a request. |
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|
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""" |
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if req.request_method.upper() != http.HTTP_PUT: |
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raise http.HttpBadRequest() |
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|
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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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|
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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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|
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try: |
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rvalue = method(req.request_body) |
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return True, rvalue |
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|
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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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return (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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return err.args |
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except Exception, err: |
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logging.exception("Error in RPC call")
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return False, "Error while executing backend function: %s" % str(err) |
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|
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# the new block devices -------------------------- |
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|
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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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""" |
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bdev_s, size, owner, on_primary, info = 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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|
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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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""" |
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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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|
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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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""" |
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devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params] |
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return backend.BlockdevRename(devlist) |
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|
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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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""" |
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bdev_s, owner, on_primary = 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) |
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|
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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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""" |
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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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|
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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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|
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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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""" |
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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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|
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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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""" |
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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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|
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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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""" |
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disks = [objects.Disk.FromDict(dsk_s) |
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for dsk_s in params] |
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return [status.ToDict() |
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for status in backend.BlockdevGetmirrorstatus(disks)] |
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|
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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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""" |
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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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|
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return result.ToDict() |
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|
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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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""" |
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cfbd = objects.Disk.FromDict(params[0]) |
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return backend.BlockdevSnapshot(cfbd) |
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|
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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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""" |
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cfbd = objects.Disk.FromDict(params[0]) |
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amount = params[1] |
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return backend.BlockdevGrow(cfbd, amount) |
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|
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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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""" |
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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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|
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@staticmethod |
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def perspective_blockdev_getsize(params): |
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"""Compute the sizes of the given block devices. |
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|
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""" |
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disks = [objects.Disk.FromDict(cf) for cf in params[0]] |
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return backend.BlockdevGetsize(disks) |
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|
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@staticmethod |
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def perspective_blockdev_export(params): |
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"""Compute the sizes of the given block devices. |
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|
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""" |
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disk = objects.Disk.FromDict(params[0]) |
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dest_node, dest_path, cluster_name = params[1:] |
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return backend.BlockdevExport(disk, dest_node, dest_path, cluster_name) |
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|
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# blockdev/drbd specific methods ---------- |
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|
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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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|
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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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""" |
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nodes_ip, disks = params |
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disks = [objects.Disk.FromDict(cf) for cf in disks] |
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return backend.DrbdDisconnectNet(nodes_ip, disks) |
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|
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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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|
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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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""" |
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nodes_ip, disks, instance_name, multimaster = params |
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disks = [objects.Disk.FromDict(cf) for cf in disks] |
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return backend.DrbdAttachNet(nodes_ip, disks, |
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instance_name, multimaster) |
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|
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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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|
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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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""" |
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nodes_ip, disks = params |
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disks = [objects.Disk.FromDict(cf) for cf in disks] |
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return backend.DrbdWaitSync(nodes_ip, disks) |
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|
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# export/import -------------------------- |
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|
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@staticmethod |
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def perspective_snapshot_export(params): |
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"""Export a given snapshot. |
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|
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""" |
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disk = objects.Disk.FromDict(params[0]) |
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dest_node = params[1] |
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instance = objects.Instance.FromDict(params[2]) |
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cluster_name = params[3] |
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dev_idx = params[4] |
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debug = params[5] |
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return backend.ExportSnapshot(disk, dest_node, instance, |
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cluster_name, dev_idx, debug) |
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|
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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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""" |
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instance = objects.Instance.FromDict(params[0]) |
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|
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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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|
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return backend.FinalizeExport(instance, snap_disks) |
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|
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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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|
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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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""" |
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path = params[0] |
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return backend.ExportInfo(path) |
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|
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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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|
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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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(constants.EXPORT_DIR). |
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|
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""" |
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return backend.ListExports() |
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|
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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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""" |
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export = params[0] |
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return backend.RemoveExport(export) |
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|
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# volume -------------------------- |
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|
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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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""" |
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vgname = params[0] |
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return backend.GetVolumeList(vgname) |
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|
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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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""" |
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return backend.ListVolumeGroups() |
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|
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# Storage -------------------------- |
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|
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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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""" |
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(su_name, su_args, name, fields) = params |
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return storage.GetStorage(su_name, *su_args).List(name, fields) |
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|
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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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""" |
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(su_name, su_args, name, changes) = params |
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return storage.GetStorage(su_name, *su_args).Modify(name, changes) |
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|
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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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""" |
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(su_name, su_args, name, op) = params |
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return storage.GetStorage(su_name, *su_args).Execute(name, op) |
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|
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# bridge -------------------------- |
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|
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@staticmethod |
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def perspective_bridges_exist(params): |
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"""Check if all bridges given exist on this node. |
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|
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""" |
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bridges_list = params[0] |
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return backend.BridgesExist(bridges_list) |
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|
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# instance -------------------------- |
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|
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@staticmethod |
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def perspective_instance_os_add(params): |
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"""Install an OS on a given instance. |
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|
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""" |
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inst_s = params[0] |
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inst = objects.Instance.FromDict(inst_s) |
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reinstall = params[1] |
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debug = params[2] |
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return backend.InstanceOsAdd(inst, reinstall, debug) |
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|
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@staticmethod |
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def perspective_instance_run_rename(params): |
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"""Runs the OS rename script for an instance. |
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|
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""" |
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inst_s, old_name, debug = params |
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inst = objects.Instance.FromDict(inst_s) |
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return backend.RunRenameInstance(inst, old_name, debug) |
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|
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@staticmethod |
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def perspective_instance_os_import(params): |
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"""Run the import function of an OS onto a given instance. |
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|
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""" |
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inst_s, src_node, src_images, cluster_name, debug = params |
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inst = objects.Instance.FromDict(inst_s) |
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return backend.ImportOSIntoInstance(inst, src_node, src_images, |
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cluster_name, debug) |
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|
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@staticmethod |
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def perspective_instance_shutdown(params): |
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"""Shutdown an instance. |
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|
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""" |
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instance = objects.Instance.FromDict(params[0]) |
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timeout = params[1] |
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return backend.InstanceShutdown(instance, timeout) |
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|
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@staticmethod |
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def perspective_instance_start(params): |
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"""Start an instance. |
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|
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""" |
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instance = objects.Instance.FromDict(params[0]) |
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return backend.StartInstance(instance) |
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|
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@staticmethod |
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def perspective_migration_info(params): |
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"""Gather information about an instance to be migrated. |
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|
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""" |
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instance = objects.Instance.FromDict(params[0]) |
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return backend.MigrationInfo(instance) |
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|
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@staticmethod |
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def perspective_accept_instance(params): |
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"""Prepare the node to accept an instance. |
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|
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""" |
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instance, info, target = params |
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instance = objects.Instance.FromDict(instance) |
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return backend.AcceptInstance(instance, info, target) |
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|
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@staticmethod |
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def perspective_finalize_migration(params): |
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"""Finalize the instance migration. |
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|
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""" |
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instance, info, success = params |
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instance = objects.Instance.FromDict(instance) |
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return backend.FinalizeMigration(instance, info, success) |
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|
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@staticmethod |
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def perspective_instance_migrate(params): |
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"""Migrates an instance. |
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|
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""" |
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instance, target, live = params |
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instance = objects.Instance.FromDict(instance) |
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return backend.MigrateInstance(instance, target, live) |
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|
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@staticmethod |
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def perspective_instance_reboot(params): |
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"""Reboot an instance. |
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|
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""" |
| 551 |
instance = objects.Instance.FromDict(params[0]) |
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reboot_type = params[1] |
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shutdown_timeout = params[2] |
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return backend.InstanceReboot(instance, reboot_type, shutdown_timeout) |
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|
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@staticmethod |
| 557 |
def perspective_instance_info(params): |
| 558 |
"""Query instance information. |
| 559 |
|
| 560 |
""" |
| 561 |
return backend.GetInstanceInfo(params[0], params[1]) |
| 562 |
|
| 563 |
@staticmethod |
| 564 |
def perspective_instance_migratable(params): |
| 565 |
"""Query whether the specified instance can be migrated. |
| 566 |
|
| 567 |
""" |
| 568 |
instance = objects.Instance.FromDict(params[0]) |
| 569 |
return backend.GetInstanceMigratable(instance) |
| 570 |
|
| 571 |
@staticmethod |
| 572 |
def perspective_all_instances_info(params): |
| 573 |
"""Query information about all instances. |
| 574 |
|
| 575 |
""" |
| 576 |
return backend.GetAllInstancesInfo(params[0]) |
| 577 |
|
| 578 |
@staticmethod |
| 579 |
def perspective_instance_list(params): |
| 580 |
"""Query the list of running instances. |
| 581 |
|
| 582 |
""" |
| 583 |
return backend.GetInstanceList(params[0]) |
| 584 |
|
| 585 |
# node -------------------------- |
| 586 |
|
| 587 |
@staticmethod |
| 588 |
def perspective_node_tcp_ping(params): |
| 589 |
"""Do a TcpPing on the remote node. |
| 590 |
|
| 591 |
""" |
| 592 |
return utils.TcpPing(params[1], params[2], timeout=params[3], |
| 593 |
live_port_needed=params[4], source=params[0]) |
| 594 |
|
| 595 |
@staticmethod |
| 596 |
def perspective_node_has_ip_address(params): |
| 597 |
"""Checks if a node has the given ip address. |
| 598 |
|
| 599 |
""" |
| 600 |
return utils.OwnIpAddress(params[0]) |
| 601 |
|
| 602 |
@staticmethod |
| 603 |
def perspective_node_info(params): |
| 604 |
"""Query node information. |
| 605 |
|
| 606 |
""" |
| 607 |
vgname, hypervisor_type = params |
| 608 |
return backend.GetNodeInfo(vgname, hypervisor_type) |
| 609 |
|
| 610 |
@staticmethod |
| 611 |
def perspective_node_add(params): |
| 612 |
"""Complete the registration of this node in the cluster. |
| 613 |
|
| 614 |
""" |
| 615 |
return backend.AddNode(params[0], params[1], params[2], |
| 616 |
params[3], params[4], params[5]) |
| 617 |
|
| 618 |
@staticmethod |
| 619 |
def perspective_node_verify(params): |
| 620 |
"""Run a verify sequence on this node. |
| 621 |
|
| 622 |
""" |
| 623 |
return backend.VerifyNode(params[0], params[1]) |
| 624 |
|
| 625 |
@staticmethod |
| 626 |
def perspective_node_start_master(params): |
| 627 |
"""Promote this node to master status. |
| 628 |
|
| 629 |
""" |
| 630 |
return backend.StartMaster(params[0], params[1]) |
| 631 |
|
| 632 |
@staticmethod |
| 633 |
def perspective_node_stop_master(params): |
| 634 |
"""Demote this node from master status. |
| 635 |
|
| 636 |
""" |
| 637 |
return backend.StopMaster(params[0]) |
| 638 |
|
| 639 |
@staticmethod |
| 640 |
def perspective_node_leave_cluster(params): |
| 641 |
"""Cleanup after leaving a cluster. |
| 642 |
|
| 643 |
""" |
| 644 |
return backend.LeaveCluster(params[0]) |
| 645 |
|
| 646 |
@staticmethod |
| 647 |
def perspective_node_volumes(params): |
| 648 |
"""Query the list of all logical volume groups. |
| 649 |
|
| 650 |
""" |
| 651 |
return backend.NodeVolumes() |
| 652 |
|
| 653 |
@staticmethod |
| 654 |
def perspective_node_demote_from_mc(params): |
| 655 |
"""Demote a node from the master candidate role. |
| 656 |
|
| 657 |
""" |
| 658 |
return backend.DemoteFromMC() |
| 659 |
|
| 660 |
|
| 661 |
@staticmethod |
| 662 |
def perspective_node_powercycle(params): |
| 663 |
"""Tries to powercycle the nod. |
| 664 |
|
| 665 |
""" |
| 666 |
hypervisor_type = params[0] |
| 667 |
return backend.PowercycleNode(hypervisor_type) |
| 668 |
|
| 669 |
|
| 670 |
# cluster -------------------------- |
| 671 |
|
| 672 |
@staticmethod |
| 673 |
def perspective_version(params): |
| 674 |
"""Query version information. |
| 675 |
|
| 676 |
""" |
| 677 |
return constants.PROTOCOL_VERSION |
| 678 |
|
| 679 |
@staticmethod |
| 680 |
def perspective_upload_file(params): |
| 681 |
"""Upload a file. |
| 682 |
|
| 683 |
Note that the backend implementation imposes strict rules on which |
| 684 |
files are accepted. |
| 685 |
|
| 686 |
""" |
| 687 |
return backend.UploadFile(*params) |
| 688 |
|
| 689 |
@staticmethod |
| 690 |
def perspective_master_info(params): |
| 691 |
"""Query master information. |
| 692 |
|
| 693 |
""" |
| 694 |
return backend.GetMasterInfo() |
| 695 |
|
| 696 |
@staticmethod |
| 697 |
def perspective_write_ssconf_files(params): |
| 698 |
"""Write ssconf files. |
| 699 |
|
| 700 |
""" |
| 701 |
(values,) = params |
| 702 |
return backend.WriteSsconfFiles(values) |
| 703 |
|
| 704 |
# os ----------------------- |
| 705 |
|
| 706 |
@staticmethod |
| 707 |
def perspective_os_diagnose(params): |
| 708 |
"""Query detailed information about existing OSes. |
| 709 |
|
| 710 |
""" |
| 711 |
return backend.DiagnoseOS() |
| 712 |
|
| 713 |
@staticmethod |
| 714 |
def perspective_os_get(params): |
| 715 |
"""Query information about a given OS. |
| 716 |
|
| 717 |
""" |
| 718 |
name = params[0] |
| 719 |
os_obj = backend.OSFromDisk(name) |
| 720 |
return os_obj.ToDict() |
| 721 |
|
| 722 |
# hooks ----------------------- |
| 723 |
|
| 724 |
@staticmethod |
| 725 |
def perspective_hooks_runner(params): |
| 726 |
"""Run hook scripts. |
| 727 |
|
| 728 |
""" |
| 729 |
hpath, phase, env = params |
| 730 |
hr = backend.HooksRunner() |
| 731 |
return hr.RunHooks(hpath, phase, env) |
| 732 |
|
| 733 |
# iallocator ----------------- |
| 734 |
|
| 735 |
@staticmethod |
| 736 |
def perspective_iallocator_runner(params): |
| 737 |
"""Run an iallocator script. |
| 738 |
|
| 739 |
""" |
| 740 |
name, idata = params |
| 741 |
iar = backend.IAllocatorRunner() |
| 742 |
return iar.Run(name, idata) |
| 743 |
|
| 744 |
# test ----------------------- |
| 745 |
|
| 746 |
@staticmethod |
| 747 |
def perspective_test_delay(params): |
| 748 |
"""Run test delay. |
| 749 |
|
| 750 |
""" |
| 751 |
duration = params[0] |
| 752 |
status, rval = utils.TestDelay(duration) |
| 753 |
if not status: |
| 754 |
raise backend.RPCFail(rval) |
| 755 |
return rval |
| 756 |
|
| 757 |
# file storage --------------- |
| 758 |
|
| 759 |
@staticmethod |
| 760 |
def perspective_file_storage_dir_create(params): |
| 761 |
"""Create the file storage directory. |
| 762 |
|
| 763 |
""" |
| 764 |
file_storage_dir = params[0] |
| 765 |
return backend.CreateFileStorageDir(file_storage_dir) |
| 766 |
|
| 767 |
@staticmethod |
| 768 |
def perspective_file_storage_dir_remove(params): |
| 769 |
"""Remove the file storage directory. |
| 770 |
|
| 771 |
""" |
| 772 |
file_storage_dir = params[0] |
| 773 |
return backend.RemoveFileStorageDir(file_storage_dir) |
| 774 |
|
| 775 |
@staticmethod |
| 776 |
def perspective_file_storage_dir_rename(params): |
| 777 |
"""Rename the file storage directory. |
| 778 |
|
| 779 |
""" |
| 780 |
old_file_storage_dir = params[0] |
| 781 |
new_file_storage_dir = params[1] |
| 782 |
return backend.RenameFileStorageDir(old_file_storage_dir, |
| 783 |
new_file_storage_dir) |
| 784 |
|
| 785 |
# jobs ------------------------ |
| 786 |
|
| 787 |
@staticmethod |
| 788 |
@_RequireJobQueueLock |
| 789 |
def perspective_jobqueue_update(params): |
| 790 |
"""Update job queue. |
| 791 |
|
| 792 |
""" |
| 793 |
(file_name, content) = params |
| 794 |
return backend.JobQueueUpdate(file_name, content) |
| 795 |
|
| 796 |
@staticmethod |
| 797 |
@_RequireJobQueueLock |
| 798 |
def perspective_jobqueue_purge(params): |
| 799 |
"""Purge job queue. |
| 800 |
|
| 801 |
""" |
| 802 |
return backend.JobQueuePurge() |
| 803 |
|
| 804 |
@staticmethod |
| 805 |
@_RequireJobQueueLock |
| 806 |
def perspective_jobqueue_rename(params): |
| 807 |
"""Rename a job queue file. |
| 808 |
|
| 809 |
""" |
| 810 |
# TODO: What if a file fails to rename? |
| 811 |
return [backend.JobQueueRename(old, new) for old, new in params] |
| 812 |
|
| 813 |
@staticmethod |
| 814 |
def perspective_jobqueue_set_drain(params): |
| 815 |
"""Set/unset the queue drain flag. |
| 816 |
|
| 817 |
""" |
| 818 |
drain_flag = params[0] |
| 819 |
return backend.JobQueueSetDrainFlag(drain_flag) |
| 820 |
|
| 821 |
|
| 822 |
# hypervisor --------------- |
| 823 |
|
| 824 |
@staticmethod |
| 825 |
def perspective_hypervisor_validate_params(params): |
| 826 |
"""Validate the hypervisor parameters. |
| 827 |
|
| 828 |
""" |
| 829 |
(hvname, hvparams) = params |
| 830 |
return backend.ValidateHVParams(hvname, hvparams) |
| 831 |
|
| 832 |
|
| 833 |
def CheckNoded(_, args): |
| 834 |
"""Initial checks whether to run or exit with a failure. |
| 835 |
|
| 836 |
""" |
| 837 |
if args: # noded doesn't take any arguments |
| 838 |
print >> sys.stderr, ("Usage: %s [-f] [-d] [-p port] [-b ADDRESS]" %
|
| 839 |
sys.argv[0]) |
| 840 |
sys.exit(constants.EXIT_FAILURE) |
| 841 |
|
| 842 |
|
| 843 |
def ExecNoded(options, _): |
| 844 |
"""Main node daemon function, executed with the PID file held. |
| 845 |
|
| 846 |
""" |
| 847 |
if options.mlock: |
| 848 |
request_executor_class = MlockallRequestExecutor |
| 849 |
try: |
| 850 |
utils.Mlockall() |
| 851 |
except errors.NoCtypesError: |
| 852 |
logging.warning("Cannot set memory lock, ctypes module not found")
|
| 853 |
request_executor_class = http.server.HttpServerRequestExecutor |
| 854 |
else: |
| 855 |
request_executor_class = http.server.HttpServerRequestExecutor |
| 856 |
|
| 857 |
# Read SSL certificate |
| 858 |
if options.ssl: |
| 859 |
ssl_params = http.HttpSslParams(ssl_key_path=options.ssl_key, |
| 860 |
ssl_cert_path=options.ssl_cert) |
| 861 |
else: |
| 862 |
ssl_params = None |
| 863 |
|
| 864 |
err = _PrepareQueueLock() |
| 865 |
if err is not None: |
| 866 |
# this might be some kind of file-system/permission error; while |
| 867 |
# this breaks the job queue functionality, we shouldn't prevent |
| 868 |
# startup of the whole node daemon because of this |
| 869 |
logging.critical("Can't init/verify the queue, proceeding anyway: %s", err)
|
| 870 |
|
| 871 |
mainloop = daemon.Mainloop() |
| 872 |
server = NodeHttpServer(mainloop, options.bind_address, options.port, |
| 873 |
ssl_params=ssl_params, ssl_verify_peer=True, |
| 874 |
request_executor_class=request_executor_class) |
| 875 |
server.Start() |
| 876 |
try: |
| 877 |
mainloop.Run() |
| 878 |
finally: |
| 879 |
server.Stop() |
| 880 |
|
| 881 |
|
| 882 |
def main(): |
| 883 |
"""Main function for the node daemon. |
| 884 |
|
| 885 |
""" |
| 886 |
parser = OptionParser(description="Ganeti node daemon", |
| 887 |
usage="%prog [-f] [-d] [-p port] [-b ADDRESS]", |
| 888 |
version="%%prog (ganeti) %s" % |
| 889 |
constants.RELEASE_VERSION) |
| 890 |
parser.add_option("--no-mlock", dest="mlock",
|
| 891 |
help="Do not mlock the node memory in ram", |
| 892 |
default=True, action="store_false") |
| 893 |
|
| 894 |
dirs = [(val, constants.RUN_DIRS_MODE) for val in constants.SUB_RUN_DIRS] |
| 895 |
dirs.append((constants.LOG_OS_DIR, 0750)) |
| 896 |
dirs.append((constants.LOCK_DIR, 1777)) |
| 897 |
daemon.GenericMain(constants.NODED, parser, dirs, CheckNoded, ExecNoded, |
| 898 |
console_logging=True) |
| 899 |
|
| 900 |
|
| 901 |
if __name__ == '__main__': |
| 902 |
main() |