Hardware introspection daemon for OpenStack Ironic
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ironic-inspector/ironic_inspector/introspect.py

227 lines
8.4 KiB

# 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.
"""Handling introspection request."""
import re
import string
import time
from eventlet import semaphore
from ironicclient import exceptions
from oslo_config import cfg
from ironic_inspector.common.i18n import _, _LI, _LW
from ironic_inspector import firewall
from ironic_inspector import node_cache
from ironic_inspector import utils
CONF = cfg.CONF
LOG = utils.getProcessingLogger(__name__)
PASSWORD_ACCEPTED_CHARS = set(string.ascii_letters + string.digits)
PASSWORD_MAX_LENGTH = 20 # IPMI v2.0
_LAST_INTROSPECTION_TIME = 0
_LAST_INTROSPECTION_LOCK = semaphore.BoundedSemaphore()
def _validate_ipmi_credentials(node, new_ipmi_credentials):
if not CONF.processing.enable_setting_ipmi_credentials:
raise utils.Error(
_('IPMI credentials setup is disabled in configuration'))
new_username, new_password = new_ipmi_credentials
if not new_username:
new_username = node.driver_info.get('ipmi_username')
if not new_username:
raise utils.Error(_('Setting IPMI credentials requested, but neither '
'new user name nor driver_info[ipmi_username] '
'are provided'),
node_info=node)
wrong_chars = {c for c in new_password
if c not in PASSWORD_ACCEPTED_CHARS}
if wrong_chars:
raise utils.Error(_('Forbidden characters encountered in new IPMI '
'password: "%s"; use only letters and numbers')
% ''.join(wrong_chars), node_info=node)
if not 0 < len(new_password) <= PASSWORD_MAX_LENGTH:
raise utils.Error(_('IPMI password length should be > 0 and <= %d')
% PASSWORD_MAX_LENGTH, node_info=node)
return new_username, new_password
def introspect(uuid, new_ipmi_credentials=None, token=None):
"""Initiate hardware properties introspection for a given node.
:param uuid: node uuid
:param new_ipmi_credentials: tuple (new username, new password) or None
:param token: authentication token
:raises: Error
"""
ironic = utils.get_client(token)
try:
node = ironic.node.get(uuid)
except exceptions.NotFound:
raise utils.Error(_("Cannot find node %s") % uuid, code=404)
except exceptions.HttpError as exc:
raise utils.Error(_("Cannot get node %(node)s: %(exc)s") %
{'node': uuid, 'exc': exc})
utils.check_provision_state(node, with_credentials=new_ipmi_credentials)
if new_ipmi_credentials:
new_ipmi_credentials = (
_validate_ipmi_credentials(node, new_ipmi_credentials))
else:
validation = ironic.node.validate(node.uuid)
if not validation.power['result']:
msg = _('Failed validation of power interface, reason: %s')
raise utils.Error(msg % validation.power['reason'],
node_info=node)
node_info = node_cache.add_node(node.uuid,
bmc_address=utils.get_ipmi_address(node),
ironic=ironic)
node_info.set_option('new_ipmi_credentials', new_ipmi_credentials)
def _handle_exceptions():
try:
_background_introspect(ironic, node_info)
except utils.Error as exc:
# Logging has already happened in Error.__init__
node_info.finished(error=str(exc))
except Exception as exc:
msg = _('Unexpected exception in background introspection thread')
LOG.exception(msg, node_info=node_info)
node_info.finished(error=msg)
utils.spawn_n(_handle_exceptions)
def _background_introspect(ironic, node_info):
global _LAST_INTROSPECTION_TIME
if not node_info.options.get('new_ipmi_credentials'):
if re.match(CONF.introspection_delay_drivers, node_info.node().driver):
LOG.debug('Attempting to acquire lock on last introspection time')
with _LAST_INTROSPECTION_LOCK:
delay = (_LAST_INTROSPECTION_TIME - time.time()
+ CONF.introspection_delay)
if delay > 0:
LOG.debug('Waiting %d seconds before sending the next '
'node on introspection', delay)
time.sleep(delay)
_LAST_INTROSPECTION_TIME = time.time()
node_info.acquire_lock()
try:
_background_introspect_locked(ironic, node_info)
finally:
node_info.release_lock()
def _background_introspect_locked(ironic, node_info):
# TODO(dtantsur): pagination
macs = list(node_info.ports())
if macs:
node_info.add_attribute(node_cache.MACS_ATTRIBUTE, macs)
LOG.info(_LI('Whitelisting MAC\'s %s on the firewall'), macs,
node_info=node_info)
firewall.update_filters(ironic)
attrs = node_info.attributes
if CONF.processing.node_not_found_hook is None and not attrs:
raise utils.Error(
_('No lookup attributes were found, inspector won\'t '
'be able to find it after introspection, consider creating '
'ironic ports or providing an IPMI address'),
node_info=node_info)
LOG.info(_LI('The following attributes will be used for look up: %s'),
attrs, node_info=node_info)
if not node_info.options.get('new_ipmi_credentials'):
try:
ironic.node.set_boot_device(node_info.uuid, 'pxe',
persistent=False)
except Exception as exc:
LOG.warning(_LW('Failed to set boot device to PXE: %s'),
exc, node_info=node_info)
try:
ironic.node.set_power_state(node_info.uuid, 'reboot')
except Exception as exc:
raise utils.Error(_('Failed to power on the node, check it\'s '
'power management configuration: %s'),
exc, node_info=node_info)
LOG.info(_LI('Introspection started successfully'),
node_info=node_info)
else:
LOG.info(_LI('Introspection environment is ready, manual power on is '
'required within %d seconds'), CONF.timeout,
node_info=node_info)
def abort(uuid, token=None):
"""Abort running introspection.
:param uuid: node uuid
:param token: authentication token
:raises: Error
"""
LOG.debug('Aborting introspection for node %s', uuid)
ironic = utils.get_client(token)
node_info = node_cache.get_node(uuid, ironic=ironic, locked=False)
# check pending operations
locked = node_info.acquire_lock(blocking=False)
if not locked:
# Node busy --- cannot abort atm
raise utils.Error(_('Node is locked, please, retry later'),
node_info=node_info, code=409)
utils.spawn_n(_abort, node_info, ironic)
def _abort(node_info, ironic):
# runs in background
if node_info.finished_at is not None:
# introspection already finished; nothing to do
LOG.info(_LI('Cannot abort introspection as it is already '
'finished'), node_info=node_info)
node_info.release_lock()
return
# block this node from PXE Booting the introspection image
try:
firewall.update_filters(ironic)
except Exception as exc:
# Note(mkovacik): this will be retried in firewall update
# periodic task; we continue aborting
LOG.warning(_LW('Failed to update firewall filters: %s'), exc,
node_info=node_info)
# finish the introspection
LOG.debug('Forcing power-off', node_info=node_info)
try:
ironic.node.set_power_state(node_info.uuid, 'off')
except Exception as exc:
LOG.warning(_LW('Failed to power off node: %s'), exc,
node_info=node_info)
node_info.finished(error=_('Canceled by operator'))
LOG.info(_LI('Introspection aborted'), node_info=node_info)