63f6adf68e
Following the decomposition of the core step on the 'direct' deploy interface, this change decomposed the iscsi and ansible deploy. Co-Authored-By: Dmitry Tantsur <dtantsur@protonmail.com> Change-Id: I537c6f6cf66c80b67b9045ea0618b02b7b93d36c Story: #2006963 Task: #40152
669 lines
26 KiB
Python
669 lines
26 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Ansible deploy interface
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"""
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import json
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import os
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import shlex
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from urllib import parse as urlparse
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from ironic_lib import metrics_utils
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from ironic_lib import utils as irlib_utils
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from oslo_concurrency import processutils
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from oslo_log import log
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from oslo_utils import strutils
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from oslo_utils import units
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import retrying
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import yaml
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from ironic.common import dhcp_factory
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from ironic.common import exception
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from ironic.common.i18n import _
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from ironic.common import images
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from ironic.common import states
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from ironic.common import utils
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from ironic.conductor import steps as conductor_steps
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from ironic.conductor import task_manager
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from ironic.conductor import utils as manager_utils
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from ironic.conf import CONF
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from ironic.drivers import base
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from ironic.drivers.modules import agent_base
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from ironic.drivers.modules import deploy_utils
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LOG = log.getLogger(__name__)
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METRICS = metrics_utils.get_metrics_logger(__name__)
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OPTIONAL_PROPERTIES = {
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'ansible_username': _('Deploy ramdisk username for Ansible. '
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'This user must have passwordless sudo '
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'permissions. Optional.'),
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'ansible_key_file': _('Full path to private SSH key file. '
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'If not specified, default keys for user running '
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'ironic-conductor process will be used. '
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'Note that for keys with password, those '
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'must be pre-loaded into ssh-agent. '
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'Optional.'),
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'ansible_playbooks_path': _('Path to folder holding playbooks to use '
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'for this node. Optional. '
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'Default is set in ironic config.'),
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'ansible_deploy_playbook': _('Name of the Ansible playbook file inside '
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'the "ansible_playbooks_path" folder which '
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'is used for node deployment. Optional.'),
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'ansible_shutdown_playbook': _('Name of the Ansible playbook file inside '
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'the "ansible_playbooks_path" folder which '
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'is used for node shutdown. Optional.'),
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'ansible_clean_playbook': _('Name of the Ansible playbook file inside '
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'the "ansible_playbooks_path" folder which '
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'is used for node cleaning. Optional.'),
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'ansible_clean_steps_config': _('Name of the file inside the '
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'"ansible_playbooks_path" folder with '
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'cleaning steps configuration. Optional.'),
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'ansible_python_interpreter': _('Absolute path to the python interpreter '
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'on the managed machines. Optional.'),
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}
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COMMON_PROPERTIES = OPTIONAL_PROPERTIES
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class PlaybookNotFound(exception.IronicException):
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_msg_fmt = _('Failed to set ansible playbook for action %(action)s')
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def _get_playbooks_path(node):
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return node.driver_info.get('ansible_playbooks_path',
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CONF.ansible.playbooks_path)
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def _parse_ansible_driver_info(node, action='deploy'):
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user = node.driver_info.get('ansible_username',
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CONF.ansible.default_username)
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key = node.driver_info.get('ansible_key_file',
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CONF.ansible.default_key_file)
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playbook = node.driver_info.get('ansible_%s_playbook' % action,
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getattr(CONF.ansible,
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'default_%s_playbook' % action,
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None))
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if not playbook:
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raise PlaybookNotFound(action=action)
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return os.path.basename(playbook), user, key
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def _get_python_interpreter(node):
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return node.driver_info.get('ansible_python_interpreter',
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CONF.ansible.default_python_interpreter)
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def _get_configdrive_path(basename):
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return os.path.join(CONF.tempdir, basename + '.cndrive')
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def _get_node_ip(task):
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callback_url = task.node.driver_internal_info.get('agent_url', '')
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return urlparse.urlparse(callback_url).netloc.split(':')[0]
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def _prepare_extra_vars(host_list, variables=None):
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nodes_var = []
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for node_uuid, ip, user, extra in host_list:
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nodes_var.append(dict(name=node_uuid, ip=ip, user=user, extra=extra))
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extra_vars = dict(nodes=nodes_var)
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if variables:
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extra_vars.update(variables)
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return extra_vars
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def _run_playbook(node, name, extra_vars, key, tags=None, notags=None):
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"""Execute ansible-playbook."""
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root = _get_playbooks_path(node)
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playbook = os.path.join(root, name)
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inventory = os.path.join(root, 'inventory')
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ironic_vars = {'ironic': extra_vars}
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python_interpreter = _get_python_interpreter(node)
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if python_interpreter:
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ironic_vars['ansible_python_interpreter'] = python_interpreter
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args = [CONF.ansible.ansible_playbook_script, playbook,
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'-i', inventory,
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'-e', json.dumps(ironic_vars),
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]
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if CONF.ansible.config_file_path:
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env = ['env', 'ANSIBLE_CONFIG=%s' % CONF.ansible.config_file_path]
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args = env + args
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if tags:
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args.append('--tags=%s' % ','.join(tags))
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if notags:
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args.append('--skip-tags=%s' % ','.join(notags))
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if key:
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args.append('--private-key=%s' % key)
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verbosity = CONF.ansible.verbosity
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if verbosity is None and CONF.debug:
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verbosity = 4
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if verbosity:
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args.append('-' + 'v' * verbosity)
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if CONF.ansible.ansible_extra_args:
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args.extend(shlex.split(CONF.ansible.ansible_extra_args))
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try:
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out, err = utils.execute(*args)
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return out, err
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except processutils.ProcessExecutionError as e:
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raise exception.InstanceDeployFailure(reason=e)
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def _calculate_memory_req(task):
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image_source = task.node.instance_info['image_source']
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image_size = images.download_size(task.context, image_source)
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return image_size // units.Mi + CONF.ansible.extra_memory
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def _parse_partitioning_info(node):
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info = node.instance_info
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i_info = {'label': deploy_utils.get_disk_label(node) or 'msdos'}
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is_gpt = i_info['label'] == 'gpt'
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unit = 'MiB'
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partitions = {}
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def add_partition(name, start, end):
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partitions[name] = {'number': len(partitions) + 1,
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'part_start': '%i%s' % (start, unit),
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'part_end': '%i%s' % (end, unit)}
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if is_gpt:
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partitions[name]['name'] = name
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end = 1
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if is_gpt:
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# prepend 1MiB bios_grub partition for GPT so that grub(2) installs
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start, end = end, end + 1
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add_partition('bios', start, end)
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partitions['bios']['flags'] = ['bios_grub']
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ephemeral_mb = info['ephemeral_mb']
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if ephemeral_mb:
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start, end = end, end + ephemeral_mb
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add_partition('ephemeral', start, end)
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i_info['ephemeral_format'] = info['ephemeral_format']
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i_info['preserve_ephemeral'] = (
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'yes' if info['preserve_ephemeral'] else 'no')
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swap_mb = info['swap_mb']
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if swap_mb:
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start, end = end, end + swap_mb
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add_partition('swap', start, end)
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configdrive = info.get('configdrive')
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if configdrive:
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# pre-create 64MiB partition for configdrive
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start, end = end, end + 64
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add_partition('configdrive', start, end)
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# NOTE(pas-ha) make the root partition last so that
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# e.g. cloud-init can grow it on first start
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start, end = end, end + info['root_mb']
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add_partition('root', start, end)
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if not is_gpt:
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partitions['root']['flags'] = ['boot']
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i_info['partitions'] = partitions
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return {'partition_info': i_info}
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def _parse_root_device_hints(node):
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"""Convert string with hints to dict. """
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parsed_hints = deploy_utils.get_root_device_for_deploy(node)
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if not parsed_hints:
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return {}
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root_device_hints = {}
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advanced = {}
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for hint, value in parsed_hints.items():
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if isinstance(value, str):
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if value.startswith('== '):
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root_device_hints[hint] = int(value[3:])
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elif value.startswith('s== '):
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root_device_hints[hint] = urlparse.unquote(value[4:])
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else:
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advanced[hint] = value
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else:
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root_device_hints[hint] = value
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if advanced:
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raise exception.InvalidParameterValue(
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_('Ansible-deploy does not support advanced root device hints '
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'based on oslo.utils operators. '
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'Present advanced hints for node %(node)s are %(hints)s.') % {
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'node': node.uuid, 'hints': advanced})
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return root_device_hints
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def _add_ssl_image_options(image):
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image['validate_certs'] = ('no' if CONF.ansible.image_store_insecure
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else 'yes')
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if CONF.ansible.image_store_cafile:
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image['cafile'] = CONF.ansible.image_store_cafile
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if CONF.ansible.image_store_certfile and CONF.ansible.image_store_keyfile:
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image['client_cert'] = CONF.ansible.image_store_certfile
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image['client_key'] = CONF.ansible.image_store_keyfile
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def _prepare_variables(task):
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node = task.node
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i_info = node.instance_info
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image = {}
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for i_key, i_value in i_info.items():
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if i_key.startswith('image_'):
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image[i_key[6:]] = i_value
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checksum = image.get('checksum')
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if checksum:
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# NOTE(pas-ha) checksum can be in <algo>:<checksum> format
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# as supported by various Ansible modules, mostly good for
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# standalone Ironic case when instance_info is populated manually.
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# With no <algo> we take that instance_info is populated from Glance,
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# where API reports checksum as MD5 always.
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if ':' not in checksum:
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image['checksum'] = 'md5:%s' % checksum
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_add_ssl_image_options(image)
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variables = {'image': image}
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configdrive = i_info.get('configdrive')
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if configdrive:
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if urlparse.urlparse(configdrive).scheme in ('http', 'https'):
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cfgdrv_type = 'url'
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cfgdrv_location = configdrive
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else:
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cfgdrv_location = _get_configdrive_path(node.uuid)
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with open(cfgdrv_location, 'w') as f:
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f.write(configdrive)
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cfgdrv_type = 'file'
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variables['configdrive'] = {'type': cfgdrv_type,
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'location': cfgdrv_location}
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root_device_hints = _parse_root_device_hints(node)
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if root_device_hints:
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variables['root_device_hints'] = root_device_hints
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return variables
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def _validate_clean_steps(steps, node_uuid):
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missing = []
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for step in steps:
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name = step.get('name')
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if not name:
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missing.append({'name': 'undefined', 'field': 'name'})
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continue
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if 'interface' not in step:
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missing.append({'name': name, 'field': 'interface'})
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args = step.get('args', {})
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for arg_name, arg in args.items():
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if arg.get('required', False) and 'value' not in arg:
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missing.append({'name': name,
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'field': '%s.value' % arg_name})
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if missing:
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err_string = ', '.join(
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'name %(name)s, field %(field)s' % i for i in missing)
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msg = _("Malformed clean_steps file: %s") % err_string
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LOG.error(msg)
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raise exception.NodeCleaningFailure(node=node_uuid,
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reason=msg)
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if len(set(s['name'] for s in steps)) != len(steps):
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msg = _("Cleaning steps do not have unique names.")
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LOG.error(msg)
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raise exception.NodeCleaningFailure(node=node_uuid,
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reason=msg)
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def _get_clean_steps(node, interface=None, override_priorities=None):
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"""Get cleaning steps."""
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clean_steps_file = node.driver_info.get(
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'ansible_clean_steps_config', CONF.ansible.default_clean_steps_config)
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path = os.path.join(node.driver_info.get('ansible_playbooks_path',
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CONF.ansible.playbooks_path),
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os.path.basename(clean_steps_file))
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try:
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with open(path) as f:
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internal_steps = yaml.safe_load(f)
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except Exception as e:
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msg = _('Failed to load clean steps from file '
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'%(file)s: %(exc)s') % {'file': path, 'exc': e}
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raise exception.NodeCleaningFailure(node=node.uuid, reason=msg)
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_validate_clean_steps(internal_steps, node.uuid)
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steps = []
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override = override_priorities or {}
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for params in internal_steps:
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name = params['name']
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clean_if = params['interface']
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if interface is not None and interface != clean_if:
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continue
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new_priority = override.get(name)
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priority = (new_priority if new_priority is not None else
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params.get('priority', 0))
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args = {}
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argsinfo = params.get('args', {})
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for arg, arg_info in argsinfo.items():
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args[arg] = arg_info.pop('value', None)
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step = {
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'interface': clean_if,
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'step': name,
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'priority': priority,
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'abortable': False,
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'argsinfo': argsinfo,
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'args': args
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}
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steps.append(step)
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return steps
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class AnsibleDeploy(agent_base.HeartbeatMixin,
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agent_base.AgentOobStepsMixin,
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base.DeployInterface):
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"""Interface for deploy-related actions."""
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has_decomposed_deploy_steps = True
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def __init__(self):
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super(AnsibleDeploy, self).__init__()
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# NOTE(pas-ha) overriding agent creation as we won't be
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# communicating with it, only processing heartbeats
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self._client = None
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def get_properties(self):
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"""Return the properties of the interface."""
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props = COMMON_PROPERTIES.copy()
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# NOTE(pas-ha) this is to get the deploy_forces_oob_reboot property
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props.update(agent_base.VENDOR_PROPERTIES)
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return props
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@METRICS.timer('AnsibleDeploy.validate')
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def validate(self, task):
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"""Validate the driver-specific Node deployment info."""
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task.driver.boot.validate(task)
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node = task.node
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iwdi = node.driver_internal_info.get('is_whole_disk_image')
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if not iwdi and deploy_utils.get_boot_option(node) == "netboot":
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raise exception.InvalidParameterValue(_(
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"Node %(node)s is configured to use the ansible deploy "
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"interface, which does not support netboot.") %
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{'node': node.uuid})
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params = {}
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image_source = node.instance_info.get('image_source')
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params['instance_info.image_source'] = image_source
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error_msg = _('Node %s failed to validate deploy image info. Some '
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'parameters were missing') % node.uuid
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deploy_utils.check_for_missing_params(params, error_msg)
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# validate root device hints, proper exceptions are raised from there
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_parse_root_device_hints(node)
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# TODO(pas-ha) validate that all playbooks and ssh key (if set)
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# are pointing to actual files
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def _ansible_deploy(self, task, node_address):
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"""Internal function for deployment to a node."""
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node = task.node
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LOG.debug('IP of node %(node)s is %(ip)s',
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{'node': node.uuid, 'ip': node_address})
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variables = _prepare_variables(task)
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if not node.driver_internal_info.get('is_whole_disk_image'):
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variables.update(_parse_partitioning_info(node))
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if node.target_raid_config:
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variables.update({'raid_config': node.target_raid_config})
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playbook, user, key = _parse_ansible_driver_info(node)
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node_list = [(node.uuid, node_address, user, node.extra)]
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extra_vars = _prepare_extra_vars(node_list, variables=variables)
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LOG.debug('Starting deploy on node %s', node.uuid)
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# any caller should manage exceptions raised from here
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_run_playbook(node, playbook, extra_vars, key)
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@METRICS.timer('AnsibleDeploy.deploy')
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@base.deploy_step(priority=100)
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@task_manager.require_exclusive_lock
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def deploy(self, task):
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"""Perform a deployment to a node."""
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self._required_image_info(task)
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manager_utils.node_power_action(task, states.REBOOT)
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return states.DEPLOYWAIT
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def process_next_step(self, task, step_type):
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"""Start the next clean/deploy step if the previous one is complete.
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:param task: a TaskManager instance
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:param step_type: "clean" or "deploy"
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"""
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# Run the next step as soon as agent heartbeats in deploy.deploy
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if step_type == 'deploy' and self.in_core_deploy_step(task):
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manager_utils.notify_conductor_resume_deploy(task)
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@staticmethod
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def _required_image_info(task):
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"""Gather and save needed image info while the context is good.
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Gather image info that will be needed later, during the
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write_image execution, where the context won't be the same
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anymore, since coming from the server's heartbeat.
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"""
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node = task.node
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i_info = node.instance_info
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i_info['image_mem_req'] = _calculate_memory_req(task)
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node.instance_info = i_info
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node.save()
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@METRICS.timer('AnsibleDeploy.tear_down')
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@task_manager.require_exclusive_lock
|
|
def tear_down(self, task):
|
|
"""Tear down a previous deployment on the task's node."""
|
|
manager_utils.node_power_action(task, states.POWER_OFF)
|
|
power_state_to_restore = manager_utils.power_on_node_if_needed(task)
|
|
task.driver.network.unconfigure_tenant_networks(task)
|
|
manager_utils.restore_power_state_if_needed(
|
|
task, power_state_to_restore)
|
|
return states.DELETED
|
|
|
|
@METRICS.timer('AnsibleDeploy.prepare')
|
|
def prepare(self, task):
|
|
"""Prepare the deployment environment for this node."""
|
|
node = task.node
|
|
# TODO(pas-ha) investigate takeover scenario
|
|
if node.provision_state == states.DEPLOYING:
|
|
# adding network-driver dependent provisioning ports
|
|
manager_utils.node_power_action(task, states.POWER_OFF)
|
|
power_state_to_restore = (
|
|
manager_utils.power_on_node_if_needed(task))
|
|
task.driver.network.add_provisioning_network(task)
|
|
manager_utils.restore_power_state_if_needed(
|
|
task, power_state_to_restore)
|
|
if node.provision_state not in [states.ACTIVE, states.ADOPTING]:
|
|
node.instance_info = deploy_utils.build_instance_info_for_deploy(
|
|
task)
|
|
node.save()
|
|
boot_opt = deploy_utils.build_agent_options(node)
|
|
task.driver.boot.prepare_ramdisk(task, boot_opt)
|
|
|
|
@METRICS.timer('AnsibleDeploy.clean_up')
|
|
def clean_up(self, task):
|
|
"""Clean up the deployment environment for this node."""
|
|
task.driver.boot.clean_up_ramdisk(task)
|
|
provider = dhcp_factory.DHCPFactory()
|
|
provider.clean_dhcp(task)
|
|
irlib_utils.unlink_without_raise(
|
|
_get_configdrive_path(task.node.uuid))
|
|
|
|
def take_over(self, task):
|
|
LOG.error("Ansible deploy does not support take over. "
|
|
"You must redeploy the node %s explicitly.",
|
|
task.node.uuid)
|
|
|
|
def get_clean_steps(self, task):
|
|
"""Get the list of clean steps from the file.
|
|
|
|
:param task: a TaskManager object containing the node
|
|
:returns: A list of clean step dictionaries
|
|
"""
|
|
new_priorities = {
|
|
'erase_devices': CONF.deploy.erase_devices_priority,
|
|
'erase_devices_metadata':
|
|
CONF.deploy.erase_devices_metadata_priority
|
|
}
|
|
return _get_clean_steps(task.node, interface='deploy',
|
|
override_priorities=new_priorities)
|
|
|
|
@METRICS.timer('AnsibleDeploy.execute_clean_step')
|
|
def execute_clean_step(self, task, step):
|
|
"""Execute a clean step.
|
|
|
|
:param task: a TaskManager object containing the node
|
|
:param step: a clean step dictionary to execute
|
|
:returns: None
|
|
"""
|
|
node = task.node
|
|
playbook, user, key = _parse_ansible_driver_info(
|
|
task.node, action='clean')
|
|
stepname = step['step']
|
|
|
|
node_address = _get_node_ip(task)
|
|
|
|
node_list = [(node.uuid, node_address, user, node.extra)]
|
|
|
|
if node.target_raid_config:
|
|
variables = {'raid_config': node.target_raid_config}
|
|
extra_vars = _prepare_extra_vars(node_list, variables=variables)
|
|
else:
|
|
extra_vars = _prepare_extra_vars(node_list)
|
|
|
|
LOG.debug('Starting cleaning step %(step)s on node %(node)s',
|
|
{'node': node.uuid, 'step': stepname})
|
|
step_tags = step['args'].get('tags', [])
|
|
LOG.debug("Detected tags from cleaning step: %(tags)s",
|
|
{'tags': step_tags})
|
|
_run_playbook(node, playbook, extra_vars, key, tags=step_tags)
|
|
LOG.info('Ansible completed cleaning step %(step)s '
|
|
'on node %(node)s.',
|
|
{'node': node.uuid, 'step': stepname})
|
|
|
|
@METRICS.timer('AnsibleDeploy.prepare_cleaning')
|
|
def prepare_cleaning(self, task):
|
|
"""Boot into the ramdisk to prepare for cleaning.
|
|
|
|
:param task: a TaskManager object containing the node
|
|
:raises NodeCleaningFailure: if the previous cleaning ports cannot
|
|
be removed or if new cleaning ports cannot be created
|
|
:returns: None or states.CLEANWAIT for async prepare.
|
|
"""
|
|
node = task.node
|
|
conductor_steps.set_node_cleaning_steps(task)
|
|
if not node.driver_internal_info['clean_steps']:
|
|
# no clean steps configured, nothing to do.
|
|
return
|
|
power_state_to_restore = manager_utils.power_on_node_if_needed(task)
|
|
task.driver.network.add_cleaning_network(task)
|
|
manager_utils.restore_power_state_if_needed(
|
|
task, power_state_to_restore)
|
|
boot_opt = deploy_utils.build_agent_options(node)
|
|
task.driver.boot.prepare_ramdisk(task, boot_opt)
|
|
manager_utils.node_power_action(task, states.REBOOT)
|
|
return states.CLEANWAIT
|
|
|
|
@METRICS.timer('AnsibleDeploy.tear_down_cleaning')
|
|
def tear_down_cleaning(self, task):
|
|
"""Clean up the PXE and DHCP files after cleaning.
|
|
|
|
:param task: a TaskManager object containing the node
|
|
:raises NodeCleaningFailure: if the cleaning ports cannot be
|
|
removed
|
|
"""
|
|
manager_utils.node_power_action(task, states.POWER_OFF)
|
|
task.driver.boot.clean_up_ramdisk(task)
|
|
power_state_to_restore = manager_utils.power_on_node_if_needed(task)
|
|
task.driver.network.remove_cleaning_network(task)
|
|
manager_utils.restore_power_state_if_needed(
|
|
task, power_state_to_restore)
|
|
|
|
@METRICS.timer('AnsibleDeploy.write_image')
|
|
@base.deploy_step(priority=80)
|
|
def write_image(self, task):
|
|
# NOTE(pas-ha) the lock should be already upgraded in heartbeat,
|
|
# just setting its purpose for better logging
|
|
task.upgrade_lock(purpose='deploy')
|
|
# NOTE(pas-ha) this method is called from heartbeat processing only,
|
|
# so we are sure we need this particular method, not the general one
|
|
node_address = _get_node_ip(task)
|
|
self._ansible_deploy(task, node_address)
|
|
LOG.info('Ansible complete deploy on node %s', task.node.uuid)
|
|
manager_utils.node_set_boot_device(task, 'disk', persistent=True)
|
|
|
|
@METRICS.timer('AnsibleDeploy.tear_down_agent')
|
|
@base.deploy_step(priority=40)
|
|
@task_manager.require_exclusive_lock
|
|
def tear_down_agent(self, task):
|
|
"""A deploy step to tear down the agent.
|
|
|
|
Shuts down the machine and removes it from the provisioning
|
|
network.
|
|
|
|
:param task: a TaskManager object containing the node
|
|
"""
|
|
wait = CONF.ansible.post_deploy_get_power_state_retry_interval * 1000
|
|
attempts = CONF.ansible.post_deploy_get_power_state_retries + 1
|
|
|
|
@retrying.retry(
|
|
stop_max_attempt_number=attempts,
|
|
retry_on_result=lambda state: state != states.POWER_OFF,
|
|
wait_fixed=wait
|
|
)
|
|
def _wait_until_powered_off(task):
|
|
return task.driver.power.get_power_state(task)
|
|
|
|
node = task.node
|
|
oob_power_off = strutils.bool_from_string(
|
|
node.driver_info.get('deploy_forces_oob_reboot', False))
|
|
try:
|
|
if not oob_power_off:
|
|
try:
|
|
node_address = _get_node_ip(task)
|
|
playbook, user, key = _parse_ansible_driver_info(
|
|
node, action='shutdown')
|
|
node_list = [(node.uuid, node_address, user, node.extra)]
|
|
extra_vars = _prepare_extra_vars(node_list)
|
|
_run_playbook(node, playbook, extra_vars, key)
|
|
_wait_until_powered_off(task)
|
|
except Exception as e:
|
|
LOG.warning('Failed to soft power off node %(node_uuid)s '
|
|
'in at least %(timeout)d seconds. '
|
|
'Error: %(error)s',
|
|
{'node_uuid': node.uuid,
|
|
'timeout': (wait * (attempts - 1)) / 1000,
|
|
'error': e})
|
|
# NOTE(pas-ha) flush is a part of deploy playbook
|
|
# so if it finished successfully we can safely
|
|
# power off the node out-of-band
|
|
manager_utils.node_power_action(task, states.POWER_OFF)
|
|
else:
|
|
manager_utils.node_power_action(task, states.POWER_OFF)
|
|
except Exception as e:
|
|
msg = (_('Error rebooting node %(node)s after deploy. '
|
|
'Error: %(error)s') %
|
|
{'node': node.uuid, 'error': e})
|
|
agent_base.log_and_raise_deployment_error(task, msg)
|