91 lines
3.2 KiB
Python
91 lines
3.2 KiB
Python
# Copyright 2014 Cloudbase Solutions Srl
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import socket
|
|
import time
|
|
|
|
from oslo.config import cfg
|
|
|
|
from cloudbaseinit.openstack.common import log as logging
|
|
from cloudbaseinit.osutils import factory as osutils_factory
|
|
from cloudbaseinit.plugins import base
|
|
from cloudbaseinit.utils import dhcp
|
|
|
|
opts = [
|
|
cfg.BoolOpt('ntp_use_dhcp_config', default=False,
|
|
help='Configures NTP client time synchronization using '
|
|
'the NTP servers provided via DHCP'),
|
|
]
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(opts)
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class NTPClientPlugin(base.BasePlugin):
|
|
def _check_w32time_svc_status(self, osutils):
|
|
_W32TIME_SERVICE = "w32time"
|
|
|
|
svc_start_mode = osutils.get_service_start_mode(
|
|
_W32TIME_SERVICE)
|
|
|
|
if svc_start_mode != osutils.SERVICE_START_MODE_AUTOMATIC:
|
|
osutils.set_service_start_mode(
|
|
_W32TIME_SERVICE,
|
|
osutils.SERVICE_START_MODE_AUTOMATIC)
|
|
|
|
svc_status = osutils.get_service_status(_W32TIME_SERVICE)
|
|
if svc_status == osutils.SERVICE_STATUS_STOPPED:
|
|
osutils.start_service(_W32TIME_SERVICE)
|
|
|
|
i = 0
|
|
max_retries = 30
|
|
while svc_status != osutils.SERVICE_STATUS_RUNNING:
|
|
if i >= max_retries:
|
|
raise Exception('Service %s did not start' %
|
|
_W32TIME_SERVICE)
|
|
time.sleep(1)
|
|
svc_status = osutils.get_service_status(_W32TIME_SERVICE)
|
|
i += 1
|
|
|
|
def execute(self, service, shared_data):
|
|
if CONF.ntp_use_dhcp_config:
|
|
osutils = osutils_factory.get_os_utils()
|
|
dhcp_hosts = osutils.get_dhcp_hosts_in_use()
|
|
|
|
ntp_option_data = None
|
|
|
|
for (mac_address, dhcp_host) in dhcp_hosts:
|
|
options_data = dhcp.get_dhcp_options(dhcp_host,
|
|
[dhcp.OPTION_NTP_SERVERS])
|
|
if options_data:
|
|
ntp_option_data = options_data.get(dhcp.OPTION_NTP_SERVERS)
|
|
if ntp_option_data:
|
|
break
|
|
|
|
if not ntp_option_data:
|
|
LOG.debug("Could not obtain the NTP configuration via DHCP")
|
|
return (base.PLUGIN_EXECUTE_ON_NEXT_BOOT, False)
|
|
|
|
# TODO(alexpilotti): support multiple NTP servers
|
|
ntp_host = socket.inet_ntoa(ntp_option_data[:4])
|
|
|
|
self._check_w32time_svc_status(osutils)
|
|
osutils.set_ntp_client_config(ntp_host)
|
|
|
|
LOG.info('NTP client configured. Server: %s' % ntp_host)
|
|
|
|
return (base.PLUGIN_EXECUTION_DONE, False)
|