# 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.
"""Functionality related to cleaning."""
from oslo_log import log
from ironic.common import exception
from ironic.common.i18n import _
from ironic.common import states
from ironic.conductor import steps as conductor_steps
from ironic.conductor import task_manager
from ironic.conductor import utils
from ironic.conf import CONF
from ironic.drivers import utils as driver_utils
LOG = log.getLogger(__name__)
[docs]@task_manager.require_exclusive_lock
def do_node_clean(task, clean_steps=None, disable_ramdisk=False):
"""Internal RPC method to perform cleaning of a node.
:param task: a TaskManager instance with an exclusive lock on its node
:param clean_steps: For a manual clean, the list of clean steps to
perform. Is None For automated cleaning (default).
For more information, see the clean_steps parameter
of :func:`ConductorManager.do_node_clean`.
:param disable_ramdisk: Whether to skip booting ramdisk for cleaning.
"""
node = task.node
manual_clean = clean_steps is not None
clean_type = 'manual' if manual_clean else 'automated'
LOG.debug('Starting %(type)s cleaning for node %(node)s',
{'type': clean_type, 'node': node.uuid})
if not manual_clean and utils.skip_automated_cleaning(node):
# Skip cleaning, move to AVAILABLE.
node.clean_step = None
node.save()
task.process_event('done')
LOG.info('Automated cleaning is disabled, node %s has been '
'successfully moved to AVAILABLE state.', node.uuid)
return
# NOTE(dtantsur): this is only reachable during automated cleaning,
# for manual cleaning we verify maintenance mode earlier on.
if (not CONF.conductor.allow_provisioning_in_maintenance
and node.maintenance):
msg = _('Cleaning a node in maintenance mode is not allowed')
return utils.cleaning_error_handler(task, msg,
tear_down_cleaning=False)
try:
# NOTE(ghe): Valid power and network values are needed to perform
# a cleaning.
task.driver.power.validate(task)
if not disable_ramdisk:
task.driver.network.validate(task)
except exception.InvalidParameterValue as e:
msg = (_('Validation failed. Cannot clean node %(node)s. '
'Error: %(msg)s') %
{'node': node.uuid, 'msg': e})
return utils.cleaning_error_handler(task, msg)
utils.wipe_cleaning_internal_info(task)
if manual_clean:
info = node.driver_internal_info
info['clean_steps'] = clean_steps
info['cleaning_disable_ramdisk'] = disable_ramdisk
node.driver_internal_info = info
task.node.save()
# Retrieve BIOS config settings for this node
utils.node_cache_bios_settings(task, node)
# Allow the deploy driver to set up the ramdisk again (necessary for
# IPA cleaning)
try:
if not disable_ramdisk:
prepare_result = task.driver.deploy.prepare_cleaning(task)
else:
LOG.info('Skipping preparing for in-band cleaning since '
'out-of-band only cleaning has been requested for node '
'%s', node.uuid)
prepare_result = None
except Exception as e:
msg = (_('Failed to prepare node %(node)s for cleaning: %(e)s')
% {'node': node.uuid, 'e': e})
return utils.cleaning_error_handler(task, msg, traceback=True)
if prepare_result == states.CLEANWAIT:
# Prepare is asynchronous, the deploy driver will need to
# set node.driver_internal_info['clean_steps'] and
# node.clean_step and then make an RPC call to
# continue_node_clean to start cleaning.
# For manual cleaning, the target provision state is MANAGEABLE,
# whereas for automated cleaning, it is AVAILABLE (the default).
target_state = states.MANAGEABLE if manual_clean else None
task.process_event('wait', target_state=target_state)
return
try:
conductor_steps.set_node_cleaning_steps(
task, disable_ramdisk=disable_ramdisk)
except (exception.InvalidParameterValue,
exception.NodeCleaningFailure) as e:
msg = (_('Cannot clean node %(node)s. Error: %(msg)s')
% {'node': node.uuid, 'msg': e})
return utils.cleaning_error_handler(task, msg)
steps = node.driver_internal_info.get('clean_steps', [])
step_index = 0 if steps else None
do_next_clean_step(task, step_index, disable_ramdisk=disable_ramdisk)
[docs]@utils.fail_on_error(utils.cleaning_error_handler,
_("Unexpected error when processing next clean step"),
traceback=True)
@task_manager.require_exclusive_lock
def do_next_clean_step(task, step_index, disable_ramdisk=None):
"""Do cleaning, starting from the specified clean step.
:param task: a TaskManager instance with an exclusive lock
:param step_index: The first clean step in the list to execute. This
is the index (from 0) into the list of clean steps in the node's
driver_internal_info['clean_steps']. Is None if there are no steps
to execute.
:param disable_ramdisk: Whether to skip booting ramdisk for cleaning.
"""
node = task.node
# For manual cleaning, the target provision state is MANAGEABLE,
# whereas for automated cleaning, it is AVAILABLE.
manual_clean = node.target_provision_state == states.MANAGEABLE
if step_index is None:
steps = []
else:
assert node.driver_internal_info.get('clean_steps') is not None, \
f"BUG: No clean steps for {node.uuid}, step index is {step_index}"
steps = node.driver_internal_info['clean_steps'][step_index:]
if disable_ramdisk is None:
disable_ramdisk = node.driver_internal_info.get(
'cleaning_disable_ramdisk', False)
LOG.info('Executing %(kind)s cleaning on node %(node)s, remaining steps: '
'%(steps)s', {'node': node.uuid, 'steps': steps,
'kind': 'manual' if manual_clean else 'automated'})
# Execute each step until we hit an async step or run out of steps
for ind, step in enumerate(steps):
# Save which step we're about to start so we can restart
# if necessary
node.clean_step = step
driver_internal_info = node.driver_internal_info
driver_internal_info['clean_step_index'] = step_index + ind
node.driver_internal_info = driver_internal_info
node.save()
interface = getattr(task.driver, step.get('interface'))
LOG.info('Executing %(step)s on node %(node)s',
{'step': step, 'node': node.uuid})
try:
result = interface.execute_clean_step(task, step)
except Exception as e:
if isinstance(e, exception.AgentConnectionFailed):
if task.node.driver_internal_info.get('cleaning_reboot'):
LOG.info('Agent is not yet running on node %(node)s '
'after cleaning reboot, waiting for agent to '
'come up to run next clean step %(step)s.',
{'node': node.uuid, 'step': step})
driver_internal_info['skip_current_clean_step'] = False
node.driver_internal_info = driver_internal_info
target_state = (states.MANAGEABLE if manual_clean
else None)
task.process_event('wait', target_state=target_state)
return
if isinstance(e, exception.AgentInProgress):
LOG.info('Conductor attempted to process clean step for '
'node %(node)s. Agent indicated it is presently '
'executing a command. Error: %(error)s',
{'node': task.node.uuid,
'error': e})
driver_internal_info['skip_current_clean_step'] = False
node.driver_internal_info = driver_internal_info
target_state = states.MANAGEABLE if manual_clean else None
task.process_event('wait', target_state=target_state)
return
msg = (_('Node %(node)s failed step %(step)s: '
'%(exc)s') %
{'node': node.uuid, 'exc': e,
'step': node.clean_step})
if not disable_ramdisk:
driver_utils.collect_ramdisk_logs(task.node, label='cleaning')
utils.cleaning_error_handler(task, msg, traceback=True)
return
# Check if the step is done or not. The step should return
# states.CLEANWAIT if the step is still being executed, or
# None if the step is done.
if result == states.CLEANWAIT:
# Kill this worker, the async step will make an RPC call to
# continue_node_clean to continue cleaning
LOG.info('Clean step %(step)s on node %(node)s being '
'executed asynchronously, waiting for driver.',
{'node': node.uuid, 'step': step})
target_state = states.MANAGEABLE if manual_clean else None
task.process_event('wait', target_state=target_state)
return
elif result is not None:
msg = (_('While executing step %(step)s on node '
'%(node)s, step returned invalid value: %(val)s')
% {'step': step, 'node': node.uuid, 'val': result})
return utils.cleaning_error_handler(task, msg)
LOG.info('Node %(node)s finished clean step %(step)s',
{'node': node.uuid, 'step': step})
if CONF.agent.deploy_logs_collect == 'always' and not disable_ramdisk:
driver_utils.collect_ramdisk_logs(task.node, label='cleaning')
# Clear clean_step
node.clean_step = None
utils.wipe_cleaning_internal_info(task)
node.save()
if not disable_ramdisk:
try:
task.driver.deploy.tear_down_cleaning(task)
except Exception as e:
msg = (_('Failed to tear down from cleaning for node %(node)s, '
'reason: %(err)s')
% {'node': node.uuid, 'err': e})
return utils.cleaning_error_handler(task, msg,
traceback=True,
tear_down_cleaning=False)
LOG.info('Node %s cleaning complete', node.uuid)
event = 'manage' if manual_clean or node.retired else 'done'
# NOTE(rloo): No need to specify target prov. state; we're done
task.process_event(event)
[docs]@task_manager.require_exclusive_lock
def do_node_clean_abort(task, step_name=None):
"""Internal method to abort an ongoing operation.
:param task: a TaskManager instance with an exclusive lock
:param step_name: The name of the clean step.
"""
node = task.node
try:
task.driver.deploy.tear_down_cleaning(task)
except Exception as e:
log_msg = (_('Failed to tear down cleaning for node %(node)s '
'after aborting the operation. Error: %(err)s') %
{'node': node.uuid, 'err': e})
error_msg = _('Failed to tear down cleaning after aborting '
'the operation')
utils.cleaning_error_handler(task, log_msg,
errmsg=error_msg,
traceback=True,
tear_down_cleaning=False,
set_fail_state=False)
return
info_message = _('Clean operation aborted for node %s') % node.uuid
last_error = _('By request, the clean operation was aborted')
if step_name:
msg = _(' after the completion of step "%s"') % step_name
last_error += msg
info_message += msg
node.last_error = last_error
node.clean_step = None
utils.wipe_cleaning_internal_info(task)
node.save()
LOG.info(info_message)
[docs]@utils.fail_on_error(utils.cleaning_error_handler,
_("Unexpected error when processing next clean step"),
traceback=True)
@task_manager.require_exclusive_lock
def continue_node_clean(task):
"""Continue cleaning after finishing an async clean step.
This function calculates which step has to run next and passes control
into do_next_clean_step.
:param task: a TaskManager instance with an exclusive lock
"""
node = task.node
next_step_index = utils.update_next_step_index(task, 'clean')
# If this isn't the final clean step in the cleaning operation
# and it is flagged to abort after the clean step that just
# finished, we abort the cleaning operation.
if node.clean_step.get('abort_after'):
step_name = node.clean_step['step']
if next_step_index is not None:
LOG.debug('The cleaning operation for node %(node)s was '
'marked to be aborted after step "%(step)s '
'completed. Aborting now that it has completed.',
{'node': task.node.uuid, 'step': step_name})
if node.target_provision_state == states.MANAGEABLE:
target_state = states.MANAGEABLE
else:
target_state = None
task.process_event('fail', target_state=target_state)
do_node_clean_abort(task, step_name)
return
LOG.debug('The cleaning operation for node %(node)s was '
'marked to be aborted after step "%(step)s" '
'completed. However, since there are no more '
'clean steps after this, the abort is not going '
'to be done.', {'node': node.uuid,
'step': step_name})
do_next_clean_step(task, next_step_index)
