Revision 5c9c0e0e
b/.gitignore | ||
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36 | 36 |
/daemons/daemon-util |
37 | 37 |
/daemons/ensure-dirs |
38 | 38 |
/daemons/ganeti-cleaner |
39 |
/daemons/ganeti-confd |
|
39 | 40 |
/daemons/ganeti-masterd |
40 | 41 |
/daemons/ganeti-watcher |
41 | 42 |
|
b/Makefile.am | ||
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197 | 197 |
|
198 | 198 |
server_PYTHON = \ |
199 | 199 |
lib/server/__init__.py \ |
200 |
lib/server/confd.py \ |
|
200 | 201 |
lib/server/masterd.py |
201 | 202 |
|
202 | 203 |
docrst = \ |
... | ... | |
281 | 282 |
scripts/gnt-os |
282 | 283 |
|
283 | 284 |
PYTHON_BOOTSTRAP = \ |
285 |
daemons/ganeti-confd \ |
|
284 | 286 |
daemons/ganeti-masterd \ |
285 | 287 |
daemons/ganeti-watcher \ |
286 | 288 |
scripts/gnt-backup \ |
... | ... | |
293 | 295 |
|
294 | 296 |
dist_sbin_SCRIPTS = \ |
295 | 297 |
daemons/ganeti-noded \ |
296 |
daemons/ganeti-confd \ |
|
297 | 298 |
daemons/ganeti-rapi |
298 | 299 |
|
299 | 300 |
nodist_sbin_SCRIPTS = \ |
/dev/null | ||
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1 |
#!/usr/bin/python |
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2 |
# |
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3 |
|
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# Copyright (C) 2009, 2010 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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9 |
# (at your option) any later version. |
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10 |
# |
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# This program is distributed in the hope that it will be useful, but |
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12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
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16 |
# You should have received a copy of the GNU General Public License |
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17 |
# along with this program; if not, write to the Free Software |
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18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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20 |
|
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|
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22 |
"""Ganeti configuration daemon |
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23 |
|
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Ganeti-confd is a daemon to query master candidates for configuration values. |
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25 |
It uses UDP+HMAC for authentication with a global cluster key. |
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26 |
|
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27 |
""" |
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28 |
|
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29 |
# pylint: disable-msg=C0103 |
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# C0103: Invalid name ganeti-confd |
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31 |
|
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32 |
import os |
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33 |
import sys |
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34 |
import logging |
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35 |
import time |
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36 |
|
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37 |
try: |
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38 |
# pylint: disable-msg=E0611 |
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39 |
from pyinotify import pyinotify |
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40 |
except ImportError: |
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41 |
import pyinotify |
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42 |
|
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from optparse import OptionParser |
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44 |
|
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45 |
from ganeti import asyncnotifier |
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46 |
from ganeti import confd |
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47 |
from ganeti.confd import server as confd_server |
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48 |
from ganeti import constants |
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49 |
from ganeti import errors |
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50 |
from ganeti import daemon |
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51 |
from ganeti import netutils |
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52 |
|
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53 |
|
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54 |
class ConfdAsyncUDPServer(daemon.AsyncUDPSocket): |
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55 |
"""The confd udp server, suitable for use with asyncore. |
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56 |
|
|
57 |
""" |
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58 |
def __init__(self, bind_address, port, processor): |
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59 |
"""Constructor for ConfdAsyncUDPServer |
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60 |
|
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61 |
@type bind_address: string |
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62 |
@param bind_address: socket bind address |
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63 |
@type port: int |
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64 |
@param port: udp port |
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65 |
@type processor: L{confd.server.ConfdProcessor} |
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66 |
@param processor: ConfdProcessor to use to handle queries |
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67 |
|
|
68 |
""" |
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69 |
family = netutils.IPAddress.GetAddressFamily(bind_address) |
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70 |
daemon.AsyncUDPSocket.__init__(self, family) |
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71 |
self.bind_address = bind_address |
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self.port = port |
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self.processor = processor |
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self.bind((bind_address, port)) |
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logging.debug("listening on ('%s':%d)", bind_address, port) |
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76 |
|
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# this method is overriding a daemon.AsyncUDPSocket method |
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78 |
def handle_datagram(self, payload_in, ip, port): |
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79 |
try: |
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80 |
query = confd.UnpackMagic(payload_in) |
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81 |
except errors.ConfdMagicError, err: |
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82 |
logging.debug(err) |
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return |
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84 |
|
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85 |
answer = self.processor.ExecQuery(query, ip, port) |
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86 |
if answer is not None: |
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87 |
try: |
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88 |
self.enqueue_send(ip, port, confd.PackMagic(answer)) |
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89 |
except errors.UdpDataSizeError: |
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90 |
logging.error("Reply too big to fit in an udp packet.") |
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91 |
|
|
92 |
|
|
93 |
class ConfdConfigurationReloader(object): |
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94 |
"""Logic to control when to reload the ganeti configuration |
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95 |
|
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96 |
This class is able to alter between inotify and polling, to rate-limit the |
|
97 |
number of reloads. When using inotify it also supports a fallback timed |
|
98 |
check, to verify that the reload hasn't failed. |
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99 |
|
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""" |
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def __init__(self, processor, mainloop): |
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"""Constructor for ConfdConfigurationReloader |
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|
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@type processor: L{confd.server.ConfdProcessor} |
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@param processor: ganeti-confd ConfdProcessor |
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@type mainloop: L{daemon.Mainloop} |
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107 |
@param mainloop: ganeti-confd mainloop |
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108 |
|
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109 |
""" |
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110 |
self.processor = processor |
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self.mainloop = mainloop |
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112 |
|
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self.polling = True |
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114 |
self.last_notification = 0 |
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115 |
|
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# Asyncronous inotify handler for config changes |
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117 |
cfg_file = constants.CLUSTER_CONF_FILE |
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118 |
self.wm = pyinotify.WatchManager() |
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119 |
self.inotify_handler = asyncnotifier.SingleFileEventHandler(self.wm, |
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120 |
self.OnInotify, |
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121 |
cfg_file) |
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122 |
notifier_class = asyncnotifier.ErrorLoggingAsyncNotifier |
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123 |
self.notifier = notifier_class(self.wm, self.inotify_handler) |
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124 |
|
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125 |
self.timer_handle = None |
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126 |
self._EnableTimer() |
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127 |
|
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128 |
def OnInotify(self, notifier_enabled): |
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"""Receive an inotify notification. |
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130 |
|
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@type notifier_enabled: boolean |
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132 |
@param notifier_enabled: whether the notifier is still enabled |
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133 |
|
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134 |
""" |
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current_time = time.time() |
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136 |
time_delta = current_time - self.last_notification |
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137 |
self.last_notification = current_time |
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138 |
|
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139 |
if time_delta < constants.CONFD_CONFIG_RELOAD_RATELIMIT: |
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logging.debug("Moving from inotify mode to polling mode") |
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self.polling = True |
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if notifier_enabled: |
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self.inotify_handler.disable() |
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144 |
|
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if not self.polling and not notifier_enabled: |
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146 |
try: |
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self.inotify_handler.enable() |
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148 |
except errors.InotifyError: |
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149 |
self.polling = True |
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150 |
|
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151 |
try: |
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152 |
reloaded = self.processor.reader.Reload() |
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153 |
if reloaded: |
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154 |
logging.info("Reloaded ganeti config") |
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else: |
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logging.debug("Skipped double config reload") |
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157 |
except errors.ConfigurationError: |
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158 |
self.DisableConfd() |
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159 |
self.inotify_handler.disable() |
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160 |
return |
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161 |
|
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# Reset the timer. If we're polling it will go to the polling rate, if |
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# we're not it will delay it again to its base safe timeout. |
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self._ResetTimer() |
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|
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def _DisableTimer(self): |
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if self.timer_handle is not None: |
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self.mainloop.scheduler.cancel(self.timer_handle) |
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self.timer_handle = None |
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170 |
|
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def _EnableTimer(self): |
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if self.polling: |
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timeout = constants.CONFD_CONFIG_RELOAD_RATELIMIT |
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174 |
else: |
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timeout = constants.CONFD_CONFIG_RELOAD_TIMEOUT |
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176 |
|
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177 |
if self.timer_handle is None: |
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178 |
self.timer_handle = self.mainloop.scheduler.enter( |
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timeout, 1, self.OnTimer, []) |
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180 |
|
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181 |
def _ResetTimer(self): |
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self._DisableTimer() |
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self._EnableTimer() |
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184 |
|
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def OnTimer(self): |
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"""Function called when the timer fires |
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187 |
|
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""" |
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189 |
self.timer_handle = None |
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190 |
reloaded = False |
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191 |
was_disabled = False |
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192 |
try: |
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193 |
if self.processor.reader is None: |
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was_disabled = True |
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self.EnableConfd() |
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reloaded = True |
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else: |
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reloaded = self.processor.reader.Reload() |
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except errors.ConfigurationError: |
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self.DisableConfd(silent=was_disabled) |
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return |
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202 |
|
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if self.polling and reloaded: |
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logging.info("Reloaded ganeti config") |
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elif reloaded: |
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# We have reloaded the config files, but received no inotify event. If |
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# an event is pending though, we just happen to have timed out before |
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# receiving it, so this is not a problem, and we shouldn't alert |
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if not self.notifier.check_events() and not was_disabled: |
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logging.warning("Config file reload at timeout (inotify failure)") |
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elif self.polling: |
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# We're polling, but we haven't reloaded the config: |
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# Going back to inotify mode |
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logging.debug("Moving from polling mode to inotify mode") |
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self.polling = False |
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try: |
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self.inotify_handler.enable() |
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except errors.InotifyError: |
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self.polling = True |
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else: |
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logging.debug("Performed configuration check") |
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222 |
|
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self._EnableTimer() |
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224 |
|
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def DisableConfd(self, silent=False): |
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"""Puts confd in non-serving mode |
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|
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""" |
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if not silent: |
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logging.warning("Confd is being disabled") |
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self.processor.Disable() |
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self.polling = False |
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self._ResetTimer() |
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234 |
|
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def EnableConfd(self): |
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self.processor.Enable() |
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logging.warning("Confd is being enabled") |
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self.polling = True |
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self._ResetTimer() |
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240 |
|
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241 |
|
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def CheckConfd(_, args): |
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"""Initial checks whether to run exit with a failure. |
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244 |
|
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""" |
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if args: # confd doesn't take any arguments |
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print >> sys.stderr, ("Usage: %s [-f] [-d] [-b ADDRESS]" % sys.argv[0]) |
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sys.exit(constants.EXIT_FAILURE) |
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249 |
|
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250 |
# TODO: collapse HMAC daemons handling in daemons GenericMain, when we'll |
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# have more than one. |
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252 |
if not os.path.isfile(constants.CONFD_HMAC_KEY): |
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print >> sys.stderr, "Need HMAC key %s to run" % constants.CONFD_HMAC_KEY |
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254 |
sys.exit(constants.EXIT_FAILURE) |
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255 |
|
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256 |
# TODO: once we have a cluster param specifying the address family |
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257 |
# preference, we need to check if the requested options.bind_address does not |
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258 |
# conflict with that. If so, we might warn or EXIT_FAILURE. |
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259 |
|
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260 |
|
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def PrepConfd(options, _): |
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262 |
"""Prep confd function, executed with PID file held |
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263 |
|
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264 |
""" |
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265 |
# TODO: clarify how the server and reloader variables work (they are |
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266 |
# not used) |
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267 |
|
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268 |
# pylint: disable-msg=W0612 |
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269 |
mainloop = daemon.Mainloop() |
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270 |
|
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271 |
# Asyncronous confd UDP server |
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272 |
processor = confd_server.ConfdProcessor() |
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273 |
try: |
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274 |
processor.Enable() |
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275 |
except errors.ConfigurationError: |
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276 |
# If enabling the processor has failed, we can still go on, but confd will |
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277 |
# be disabled |
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278 |
logging.warning("Confd is starting in disabled mode") |
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279 |
|
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280 |
server = ConfdAsyncUDPServer(options.bind_address, options.port, processor) |
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281 |
|
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282 |
# Configuration reloader |
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283 |
reloader = ConfdConfigurationReloader(processor, mainloop) |
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284 |
|
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285 |
return mainloop |
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286 |
|
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287 |
|
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288 |
def ExecConfd(options, args, prep_data): # pylint: disable-msg=W0613 |
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289 |
"""Main confd function, executed with PID file held |
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290 |
|
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291 |
""" |
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292 |
mainloop = prep_data |
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293 |
mainloop.Run() |
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294 |
|
|
295 |
|
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296 |
def main(): |
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297 |
"""Main function for the confd daemon. |
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298 |
|
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299 |
""" |
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300 |
parser = OptionParser(description="Ganeti configuration daemon", |
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301 |
usage="%prog [-f] [-d] [-b ADDRESS]", |
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302 |
version="%%prog (ganeti) %s" % |
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303 |
constants.RELEASE_VERSION) |
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304 |
|
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305 |
daemon.GenericMain(constants.CONFD, parser, CheckConfd, PrepConfd, ExecConfd) |
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306 |
|
|
307 |
|
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308 |
if __name__ == "__main__": |
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main() |
b/lib/server/confd.py | ||
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1 |
#!/usr/bin/python |
|
2 |
# |
|
3 |
|
|
4 |
# Copyright (C) 2009, 2010 Google Inc. |
|
5 |
# |
|
6 |
# This program is free software; you can redistribute it and/or modify |
|
7 |
# it under the terms of the GNU General Public License as published by |
|
8 |
# the Free Software Foundation; either version 2 of the License, or |
|
9 |
# (at your option) any later version. |
|
10 |
# |
|
11 |
# This program is distributed in the hope that it will be useful, but |
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
14 |
# General Public License for more details. |
|
15 |
# |
|
16 |
# You should have received a copy of the GNU General Public License |
|
17 |
# along with this program; if not, write to the Free Software |
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
19 |
# 02110-1301, USA. |
|
20 |
|
|
21 |
|
|
22 |
"""Ganeti configuration daemon |
|
23 |
|
|
24 |
Ganeti-confd is a daemon to query master candidates for configuration values. |
|
25 |
It uses UDP+HMAC for authentication with a global cluster key. |
|
26 |
|
|
27 |
""" |
|
28 |
|
|
29 |
# pylint: disable-msg=C0103 |
|
30 |
# C0103: Invalid name ganeti-confd |
|
31 |
|
|
32 |
import os |
|
33 |
import sys |
|
34 |
import logging |
|
35 |
import time |
|
36 |
|
|
37 |
try: |
|
38 |
# pylint: disable-msg=E0611 |
|
39 |
from pyinotify import pyinotify |
|
40 |
except ImportError: |
|
41 |
import pyinotify |
|
42 |
|
|
43 |
from optparse import OptionParser |
|
44 |
|
|
45 |
from ganeti import asyncnotifier |
|
46 |
from ganeti import confd |
|
47 |
from ganeti.confd import server as confd_server |
|
48 |
from ganeti import constants |
|
49 |
from ganeti import errors |
|
50 |
from ganeti import daemon |
|
51 |
from ganeti import netutils |
|
52 |
|
|
53 |
|
|
54 |
class ConfdAsyncUDPServer(daemon.AsyncUDPSocket): |
|
55 |
"""The confd udp server, suitable for use with asyncore. |
|
56 |
|
|
57 |
""" |
|
58 |
def __init__(self, bind_address, port, processor): |
|
59 |
"""Constructor for ConfdAsyncUDPServer |
|
60 |
|
|
61 |
@type bind_address: string |
|
62 |
@param bind_address: socket bind address |
|
63 |
@type port: int |
|
64 |
@param port: udp port |
|
65 |
@type processor: L{confd.server.ConfdProcessor} |
|
66 |
@param processor: ConfdProcessor to use to handle queries |
|
67 |
|
|
68 |
""" |
|
69 |
family = netutils.IPAddress.GetAddressFamily(bind_address) |
|
70 |
daemon.AsyncUDPSocket.__init__(self, family) |
|
71 |
self.bind_address = bind_address |
|
72 |
self.port = port |
|
73 |
self.processor = processor |
|
74 |
self.bind((bind_address, port)) |
|
75 |
logging.debug("listening on ('%s':%d)", bind_address, port) |
|
76 |
|
|
77 |
# this method is overriding a daemon.AsyncUDPSocket method |
|
78 |
def handle_datagram(self, payload_in, ip, port): |
|
79 |
try: |
|
80 |
query = confd.UnpackMagic(payload_in) |
|
81 |
except errors.ConfdMagicError, err: |
|
82 |
logging.debug(err) |
|
83 |
return |
|
84 |
|
|
85 |
answer = self.processor.ExecQuery(query, ip, port) |
|
86 |
if answer is not None: |
|
87 |
try: |
|
88 |
self.enqueue_send(ip, port, confd.PackMagic(answer)) |
|
89 |
except errors.UdpDataSizeError: |
|
90 |
logging.error("Reply too big to fit in an udp packet.") |
|
91 |
|
|
92 |
|
|
93 |
class ConfdConfigurationReloader(object): |
|
94 |
"""Logic to control when to reload the ganeti configuration |
|
95 |
|
|
96 |
This class is able to alter between inotify and polling, to rate-limit the |
|
97 |
number of reloads. When using inotify it also supports a fallback timed |
|
98 |
check, to verify that the reload hasn't failed. |
|
99 |
|
|
100 |
""" |
|
101 |
def __init__(self, processor, mainloop): |
|
102 |
"""Constructor for ConfdConfigurationReloader |
|
103 |
|
|
104 |
@type processor: L{confd.server.ConfdProcessor} |
|
105 |
@param processor: ganeti-confd ConfdProcessor |
|
106 |
@type mainloop: L{daemon.Mainloop} |
|
107 |
@param mainloop: ganeti-confd mainloop |
|
108 |
|
|
109 |
""" |
|
110 |
self.processor = processor |
|
111 |
self.mainloop = mainloop |
|
112 |
|
|
113 |
self.polling = True |
|
114 |
self.last_notification = 0 |
|
115 |
|
|
116 |
# Asyncronous inotify handler for config changes |
|
117 |
cfg_file = constants.CLUSTER_CONF_FILE |
|
118 |
self.wm = pyinotify.WatchManager() |
|
119 |
self.inotify_handler = asyncnotifier.SingleFileEventHandler(self.wm, |
|
120 |
self.OnInotify, |
|
121 |
cfg_file) |
|
122 |
notifier_class = asyncnotifier.ErrorLoggingAsyncNotifier |
|
123 |
self.notifier = notifier_class(self.wm, self.inotify_handler) |
|
124 |
|
|
125 |
self.timer_handle = None |
|
126 |
self._EnableTimer() |
|
127 |
|
|
128 |
def OnInotify(self, notifier_enabled): |
|
129 |
"""Receive an inotify notification. |
|
130 |
|
|
131 |
@type notifier_enabled: boolean |
|
132 |
@param notifier_enabled: whether the notifier is still enabled |
|
133 |
|
|
134 |
""" |
|
135 |
current_time = time.time() |
|
136 |
time_delta = current_time - self.last_notification |
|
137 |
self.last_notification = current_time |
|
138 |
|
|
139 |
if time_delta < constants.CONFD_CONFIG_RELOAD_RATELIMIT: |
|
140 |
logging.debug("Moving from inotify mode to polling mode") |
|
141 |
self.polling = True |
|
142 |
if notifier_enabled: |
|
143 |
self.inotify_handler.disable() |
|
144 |
|
|
145 |
if not self.polling and not notifier_enabled: |
|
146 |
try: |
|
147 |
self.inotify_handler.enable() |
|
148 |
except errors.InotifyError: |
|
149 |
self.polling = True |
|
150 |
|
|
151 |
try: |
|
152 |
reloaded = self.processor.reader.Reload() |
|
153 |
if reloaded: |
|
154 |
logging.info("Reloaded ganeti config") |
|
155 |
else: |
|
156 |
logging.debug("Skipped double config reload") |
|
157 |
except errors.ConfigurationError: |
|
158 |
self.DisableConfd() |
|
159 |
self.inotify_handler.disable() |
|
160 |
return |
|
161 |
|
|
162 |
# Reset the timer. If we're polling it will go to the polling rate, if |
|
163 |
# we're not it will delay it again to its base safe timeout. |
|
164 |
self._ResetTimer() |
|
165 |
|
|
166 |
def _DisableTimer(self): |
|
167 |
if self.timer_handle is not None: |
|
168 |
self.mainloop.scheduler.cancel(self.timer_handle) |
|
169 |
self.timer_handle = None |
|
170 |
|
|
171 |
def _EnableTimer(self): |
|
172 |
if self.polling: |
|
173 |
timeout = constants.CONFD_CONFIG_RELOAD_RATELIMIT |
|
174 |
else: |
|
175 |
timeout = constants.CONFD_CONFIG_RELOAD_TIMEOUT |
|
176 |
|
|
177 |
if self.timer_handle is None: |
|
178 |
self.timer_handle = self.mainloop.scheduler.enter( |
|
179 |
timeout, 1, self.OnTimer, []) |
|
180 |
|
|
181 |
def _ResetTimer(self): |
|
182 |
self._DisableTimer() |
|
183 |
self._EnableTimer() |
|
184 |
|
|
185 |
def OnTimer(self): |
|
186 |
"""Function called when the timer fires |
|
187 |
|
|
188 |
""" |
|
189 |
self.timer_handle = None |
|
190 |
reloaded = False |
|
191 |
was_disabled = False |
|
192 |
try: |
|
193 |
if self.processor.reader is None: |
|
194 |
was_disabled = True |
|
195 |
self.EnableConfd() |
|
196 |
reloaded = True |
|
197 |
else: |
|
198 |
reloaded = self.processor.reader.Reload() |
|
199 |
except errors.ConfigurationError: |
|
200 |
self.DisableConfd(silent=was_disabled) |
|
201 |
return |
|
202 |
|
|
203 |
if self.polling and reloaded: |
|
204 |
logging.info("Reloaded ganeti config") |
|
205 |
elif reloaded: |
|
206 |
# We have reloaded the config files, but received no inotify event. If |
|
207 |
# an event is pending though, we just happen to have timed out before |
|
208 |
# receiving it, so this is not a problem, and we shouldn't alert |
|
209 |
if not self.notifier.check_events() and not was_disabled: |
|
210 |
logging.warning("Config file reload at timeout (inotify failure)") |
|
211 |
elif self.polling: |
|
212 |
# We're polling, but we haven't reloaded the config: |
|
213 |
# Going back to inotify mode |
|
214 |
logging.debug("Moving from polling mode to inotify mode") |
|
215 |
self.polling = False |
|
216 |
try: |
|
217 |
self.inotify_handler.enable() |
|
218 |
except errors.InotifyError: |
|
219 |
self.polling = True |
|
220 |
else: |
|
221 |
logging.debug("Performed configuration check") |
|
222 |
|
|
223 |
self._EnableTimer() |
|
224 |
|
|
225 |
def DisableConfd(self, silent=False): |
|
226 |
"""Puts confd in non-serving mode |
|
227 |
|
|
228 |
""" |
|
229 |
if not silent: |
|
230 |
logging.warning("Confd is being disabled") |
|
231 |
self.processor.Disable() |
|
232 |
self.polling = False |
|
233 |
self._ResetTimer() |
|
234 |
|
|
235 |
def EnableConfd(self): |
|
236 |
self.processor.Enable() |
|
237 |
logging.warning("Confd is being enabled") |
|
238 |
self.polling = True |
|
239 |
self._ResetTimer() |
|
240 |
|
|
241 |
|
|
242 |
def CheckConfd(_, args): |
|
243 |
"""Initial checks whether to run exit with a failure. |
|
244 |
|
|
245 |
""" |
|
246 |
if args: # confd doesn't take any arguments |
|
247 |
print >> sys.stderr, ("Usage: %s [-f] [-d] [-b ADDRESS]" % sys.argv[0]) |
|
248 |
sys.exit(constants.EXIT_FAILURE) |
|
249 |
|
|
250 |
# TODO: collapse HMAC daemons handling in daemons GenericMain, when we'll |
|
251 |
# have more than one. |
|
252 |
if not os.path.isfile(constants.CONFD_HMAC_KEY): |
|
253 |
print >> sys.stderr, "Need HMAC key %s to run" % constants.CONFD_HMAC_KEY |
|
254 |
sys.exit(constants.EXIT_FAILURE) |
|
255 |
|
|
256 |
# TODO: once we have a cluster param specifying the address family |
|
257 |
# preference, we need to check if the requested options.bind_address does not |
|
258 |
# conflict with that. If so, we might warn or EXIT_FAILURE. |
|
259 |
|
|
260 |
|
|
261 |
def PrepConfd(options, _): |
|
262 |
"""Prep confd function, executed with PID file held |
|
263 |
|
|
264 |
""" |
|
265 |
# TODO: clarify how the server and reloader variables work (they are |
|
266 |
# not used) |
|
267 |
|
|
268 |
# pylint: disable-msg=W0612 |
|
269 |
mainloop = daemon.Mainloop() |
|
270 |
|
|
271 |
# Asyncronous confd UDP server |
|
272 |
processor = confd_server.ConfdProcessor() |
|
273 |
try: |
|
274 |
processor.Enable() |
|
275 |
except errors.ConfigurationError: |
|
276 |
# If enabling the processor has failed, we can still go on, but confd will |
|
277 |
# be disabled |
|
278 |
logging.warning("Confd is starting in disabled mode") |
|
279 |
|
|
280 |
server = ConfdAsyncUDPServer(options.bind_address, options.port, processor) |
|
281 |
|
|
282 |
# Configuration reloader |
|
283 |
reloader = ConfdConfigurationReloader(processor, mainloop) |
|
284 |
|
|
285 |
return mainloop |
|
286 |
|
|
287 |
|
|
288 |
def ExecConfd(options, args, prep_data): # pylint: disable-msg=W0613 |
|
289 |
"""Main confd function, executed with PID file held |
|
290 |
|
|
291 |
""" |
|
292 |
mainloop = prep_data |
|
293 |
mainloop.Run() |
|
294 |
|
|
295 |
|
|
296 |
def Main(): |
|
297 |
"""Main function for the confd daemon. |
|
298 |
|
|
299 |
""" |
|
300 |
parser = OptionParser(description="Ganeti configuration daemon", |
|
301 |
usage="%prog [-f] [-d] [-b ADDRESS]", |
|
302 |
version="%%prog (ganeti) %s" % |
|
303 |
constants.RELEASE_VERSION) |
|
304 |
|
|
305 |
daemon.GenericMain(constants.CONFD, parser, CheckConfd, PrepConfd, ExecConfd) |
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