788 lines
35 KiB
Python
788 lines
35 KiB
Python
# Copyright 2014 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from http import client as http_client
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import os
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from ironic_lib import metrics_utils
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from oslo_log import log
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from oslo_serialization import jsonutils
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from oslo_utils import strutils
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import requests
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import retrying
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from ironic.common import exception
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from ironic.common.i18n import _
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from ironic.conf import CONF
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LOG = log.getLogger(__name__)
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METRICS = metrics_utils.get_metrics_logger(__name__)
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DEFAULT_IPA_PORTAL_PORT = 3260
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REBOOT_COMMAND = 'run_image'
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def get_command_error(command):
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"""Extract an error string from the command result.
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:param command: Command information from the agent.
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:return: Error string.
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"""
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error = command.get('command_error')
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if error is None:
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LOG.error('Agent returned invalid response: missing command_error in '
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'%s', command)
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return _('Invalid agent response')
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if isinstance(error, dict):
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return error.get('details') or error.get('message') or str(error)
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else:
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return error
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class AgentClient(object):
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"""Client for interacting with nodes via a REST API."""
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@METRICS.timer('AgentClient.__init__')
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def __init__(self):
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self.session = requests.Session()
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self.session.headers.update({'Content-Type': 'application/json'})
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def _get_command_url(self, node):
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"""Get URL endpoint for agent command request"""
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agent_url = node.driver_internal_info.get('agent_url')
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if not agent_url:
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raise exception.AgentConnectionFailed(_('Agent driver requires '
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'agent_url in '
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'driver_internal_info'))
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return ('%(agent_url)s/%(api_version)s/commands/' %
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{'agent_url': agent_url,
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'api_version': CONF.agent.agent_api_version})
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def _get_command_body(self, method, params):
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"""Generate command body from method and params"""
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return jsonutils.dumps({
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'name': method,
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'params': params,
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})
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def _get_verify(self, node):
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value = (node.driver_internal_info.get('agent_verify_ca')
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or node.driver_info.get('agent_verify_ca')
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or CONF.agent.verify_ca)
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if isinstance(value, str):
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try:
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value = strutils.bool_from_string(value, strict=True)
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except ValueError:
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if not os.path.exists(value):
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raise exception.InvalidParameterValue(
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_('Agent CA %s is neither a path nor a boolean')
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% value)
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return value
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def _raise_if_typeerror(self, result, node, method):
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error = result.get('command_error')
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if error and error.get('type') == 'TypeError':
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LOG.error('Agent command %(method)s for node %(node)s failed. '
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'Internal TypeError detected: Error %(error)s',
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{'method': method, 'node': node.uuid, 'error': error})
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raise exception.AgentAPIError(node=node.uuid,
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status=error.get('code'),
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error=get_command_error(result))
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@METRICS.timer('AgentClient._wait_for_command')
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@retrying.retry(
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retry_on_exception=(
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lambda e: isinstance(e, exception.AgentCommandTimeout)),
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stop_max_attempt_number=CONF.agent.command_wait_attempts,
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wait_fixed=CONF.agent.command_wait_interval * 1000)
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def _wait_for_command(self, node, method):
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"""Wait for a command to complete.
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:param node: A Node object.
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:param method: A string represents the command executed by agent.
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:raises: AgentCommandTimeout if timeout is reached.
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"""
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# NOTE(dtantsur): this function uses AgentCommandTimeout on every
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# failure, but unless the timeout is reached, the exception is caught
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# and retried by the @retry decorator above.
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result = self.get_last_command_status(node, method)
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if result is None:
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raise exception.AgentCommandTimeout(command=method, node=node.uuid)
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if result.get('command_status') == 'RUNNING':
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LOG.debug('Command %(cmd)s has not finished yet for node %(node)s',
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{'cmd': method, 'node': node.uuid})
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raise exception.AgentCommandTimeout(command=method, node=node.uuid)
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else:
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LOG.debug('Command %(cmd)s has finished for node %(node)s with '
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'result %(result)s',
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{'cmd': method, 'node': node.uuid, 'result': result})
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self._raise_if_typeerror(result, node, method)
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return result
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@METRICS.timer('AgentClient._command')
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@retrying.retry(
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retry_on_exception=(
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lambda e: isinstance(e, exception.AgentConnectionFailed)),
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stop_max_attempt_number=CONF.agent.max_command_attempts)
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def _command(self, node, method, params, wait=False, poll=False):
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"""Sends command to agent.
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:param node: A Node object.
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:param method: A string represents the command to be executed by
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agent.
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:param params: A dictionary containing params used to form the request
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body.
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:param wait: True to wait for the command to finish executing, False
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otherwise.
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:param poll: Whether to poll the command until completion. Provides
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a better alternative to `wait` for long-running commands.
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:raises: IronicException when failed to issue the request or there was
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a malformed response from the agent.
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:raises: AgentAPIError when agent failed to execute specified command.
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:raises: AgentInProgress when the command fails to execute as the agent
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is presently executing the prior command.
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:returns: A dict containing command result from agent, see
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get_commands_status for a sample.
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"""
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assert not (wait and poll)
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url = self._get_command_url(node)
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body = self._get_command_body(method, params)
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request_params = {
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'wait': str(wait).lower()
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}
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agent_token = node.driver_internal_info.get('agent_secret_token')
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if agent_token:
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request_params['agent_token'] = agent_token
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LOG.debug('Executing agent command %(method)s for node %(node)s',
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{'node': node.uuid, 'method': method})
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try:
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response = self.session.post(
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url, params=request_params, data=body,
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verify=self._get_verify(node),
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timeout=CONF.agent.command_timeout)
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except (requests.ConnectionError, requests.Timeout) as e:
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result = self._handle_timeout_on_command_execution(node, method,
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params, e)
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response = None
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except requests.RequestException as e:
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msg = (_('Error invoking agent command %(method)s for node '
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'%(node)s. Error: %(error)s') %
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{'method': method, 'node': node.uuid, 'error': e})
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LOG.error(msg)
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raise exception.IronicException(msg)
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if response is not None:
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# TODO(russellhaering): real error handling
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try:
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result = response.json()
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except ValueError:
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msg = _(
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'Unable to decode response as JSON.\n'
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'Request URL: %(url)s\nRequest body: "%(body)s"\n'
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'Response status code: %(code)s\n'
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'Response: "%(response)s"'
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) % ({'response': response.text, 'body': body, 'url': url,
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'code': response.status_code})
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LOG.error(msg)
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raise exception.IronicException(msg)
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error = result.get('command_error')
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LOG.debug('Agent command %(method)s for node %(node)s returned '
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'result %(res)s, error %(error)s, HTTP status code %(code)s',
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{'node': node.uuid, 'method': method,
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'res': result.get('command_result'),
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'error': error,
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'code': response.status_code if response is not None
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else 'unknown'})
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if (response is not None
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and response.status_code >= http_client.BAD_REQUEST):
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faultstring = result.get('faultstring')
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if 'agent_token' in faultstring:
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LOG.error('Agent command %(method)s for node %(node)s '
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'failed. Expected 2xx HTTP status code, got '
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'%(code)d. Error suggests an older ramdisk '
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'which does not support ``agent_token``. '
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'This is a fatal error.',
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{'method': method, 'node': node.uuid,
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'code': response.status_code})
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else:
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LOG.error('Agent command %(method)s for node %(node)s failed. '
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'Expected 2xx HTTP status code, got %(code)d.',
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{'method': method, 'node': node.uuid,
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'code': response.status_code})
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if (response.status_code == http_client.CONFLICT
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or 'agent is busy' in faultstring.lower()):
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# HTTP 409 check as an explicit check of if the agent
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# is already busy.
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# NOTE(TheJulia): The agent sends upper case A as of
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# late victoria, but lower case the entire message
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# for compatability with pre-late victoria agents
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# which returns HTTP 409.
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raise exception.AgentInProgress(node=node.uuid,
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command=method,
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error=faultstring)
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raise exception.AgentAPIError(node=node.uuid,
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status=response.status_code,
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error=faultstring)
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self._raise_if_typeerror(result, node, method)
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if poll:
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result = self._wait_for_command(node, method)
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return result
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@METRICS.timer('AgentClient.get_commands_status')
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def get_commands_status(self, node, retry_connection=True,
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expect_errors=False):
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"""Get command status from agent.
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:param node: A Node object.
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:param retry_connection: Whether to retry connection problems.
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:param expect_errors: If True, do not log connection problems as
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errors.
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:return: A list of command results, each result is related to a
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command been issued to agent. A typical result can be:
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::
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{
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'command_name': <command name related to the result>,
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'command_params': <params related with the command>,
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'command_status': <current command status,
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e.g. 'RUNNING', 'SUCCEEDED', 'FAILED'>,
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'command_error': <error message if command execution
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failed>,
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'command_result': <command result if command execution
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succeeded, the value is command specific,
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e.g.:
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* a dictionary containing keys clean_result
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and clean_step for the command
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clean.execute_clean_step;
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* a dictionary containing keys deploy_result
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and deploy_step for the command
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deploy.execute_deploy_step;
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* a string representing result message for
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the command standby.cache_image;
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* None for the command standby.sync.>
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}
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"""
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url = self._get_command_url(node)
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LOG.debug('Fetching status of agent commands for node %s', node.uuid)
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def _get():
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try:
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return self.session.get(url,
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verify=self._get_verify(node),
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timeout=CONF.agent.command_timeout)
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except (requests.ConnectionError, requests.Timeout) as e:
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msg = (_('Failed to connect to the agent running on node '
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'%(node)s to collect commands status. '
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'Error: %(error)s') %
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{'node': node.uuid, 'error': e})
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logging_call = LOG.debug if expect_errors else LOG.error
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logging_call(msg)
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raise exception.AgentConnectionFailed(reason=msg)
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if retry_connection:
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_get = retrying.retry(
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retry_on_exception=(
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lambda e: isinstance(e, exception.AgentConnectionFailed)),
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stop_max_attempt_number=CONF.agent.max_command_attempts)(_get)
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result = _get().json()['commands']
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status = '; '.join('%(cmd)s: result "%(res)s", error "%(err)s"' %
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{'cmd': r.get('command_name'),
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'res': r.get('command_result'),
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'err': r.get('command_error')}
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for r in result)
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LOG.debug('Status of agent commands for node %(node)s: %(status)s',
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{'node': node.uuid, 'status': status})
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return result
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def _status_if_last_command_matches(self, node, method, params):
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"""Return the status of the given command if it's the last running."""
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try:
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method = method.split('.', 1)[1]
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except IndexError:
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pass
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commands = self.get_commands_status(node)
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if not commands:
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return None
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# TODO(dtantsur): a more reliable way to detect repeated execution
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# would be to pass a sort of require ID to the agent.
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command = commands[-1]
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if command['command_name'] != method:
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LOG.debug('Command %(cmd)s is not currently executing, the last '
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'command is %(curr)s',
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{'cmd': method, 'curr': command['command_name']})
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return None
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if command['command_status'] != 'RUNNING':
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LOG.debug('Command %(cmd)s is not currently executing, its status '
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'is %(curr)s',
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{'cmd': method, 'curr': command['command_status']})
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return None
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return command
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def _handle_timeout_on_command_execution(self, node, method, params,
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error):
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result = None
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# NOTE(dtantsur): it is possible, especially with eventlet+TLS, that
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# agent receives a command but fails to return the result to Ironic.
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# To avoid a failure, check if the last command is the one we're trying
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# to execute.
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try:
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result = self._status_if_last_command_matches(node, method, params)
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except Exception as e:
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msg = (_('Failed to connect to the agent running on node '
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'%(node)s for checking the last command status '
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'after failing to invoke command %(method)s. '
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'Error: %(error)s') %
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{'node': node.uuid, 'method': method, 'error': e})
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LOG.error(msg)
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if result is None:
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msg = (_('Failed to connect to the agent running on node %(node)s '
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'for invoking command %(method)s. Error: %(error)s') %
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{'node': node.uuid, 'method': method, 'error': error})
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LOG.error(msg)
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raise exception.AgentConnectionFailed(reason=msg)
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return result
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def get_last_command_status(self, node, method):
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"""Get the last status for the given command.
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:param node: A Node object.
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:param method: Command name.
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:returns: A dict containing command status from agent or None
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if the command was not found.
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"""
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try:
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method = method.split('.', 1)[1]
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except IndexError:
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pass
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commands = self.get_commands_status(node)
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try:
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return next(c for c in reversed(commands)
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if c.get('command_name') == method)
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except StopIteration:
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LOG.debug('Command %(cmd)s is not in the executing commands list '
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'for node %(node)s',
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{'cmd': method, 'node': node.uuid})
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return None
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@METRICS.timer('AgentClient.prepare_image')
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def prepare_image(self, node, image_info, wait=False):
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"""Call the `prepare_image` method on the node.
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:param node: A Node object.
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:param image_info: A dictionary containing various image related
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information.
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:param wait: True to wait for the command to finish executing, False
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otherwise.
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:raises: IronicException when failed to issue the request or there was
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a malformed response from the agent.
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:raises: AgentAPIError when agent failed to execute specified command.
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:raises: AgentInProgress when the command fails to execute as the agent
|
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is presently executing the prior command.
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:returns: A dict containing command status from agent.
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See :func:`get_commands_status` for a command result sample.
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"""
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LOG.debug('Preparing image %(image)s on node %(node)s.',
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{'image': image_info.get('id'),
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'node': node.uuid})
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params = {'image_info': image_info}
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# this should be an http(s) URL
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configdrive = node.instance_info.get('configdrive')
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if configdrive is not None:
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params['configdrive'] = configdrive
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return self._command(node=node,
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method='standby.prepare_image',
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params=params,
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poll=wait)
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|
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@METRICS.timer('AgentClient.start_iscsi_target')
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def start_iscsi_target(self, node, iqn,
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portal_port=DEFAULT_IPA_PORTAL_PORT,
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wipe_disk_metadata=False):
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"""Expose the node's disk as an ISCSI target.
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|
|
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:param node: an Ironic node object
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:param iqn: iSCSI target IQN
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:param portal_port: iSCSI portal port
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:param wipe_disk_metadata: True if the agent should wipe first the
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disk magic strings like the partition
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table, RAID or filesystem signature.
|
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:raises: IronicException when failed to issue the request or there was
|
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a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
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:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
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params = {'iqn': iqn,
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'portal_port': portal_port,
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'wipe_disk_metadata': wipe_disk_metadata}
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return self._command(node=node,
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method='iscsi.start_iscsi_target',
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params=params,
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wait=True)
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|
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@METRICS.timer('AgentClient.install_bootloader')
|
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def install_bootloader(self, node, root_uuid, target_boot_mode,
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efi_system_part_uuid=None,
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prep_boot_part_uuid=None,
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software_raid=False):
|
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"""Install a boot loader on the image.
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|
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:param node: A node object.
|
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:param root_uuid: The UUID of the root partition.
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:param target_boot_mode: The target deployment boot mode.
|
|
:param efi_system_part_uuid: The UUID of the efi system partition
|
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where the bootloader will be installed to, only used for uefi
|
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boot mode.
|
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:param prep_boot_part_uuid: The UUID of the PReP Boot partition where
|
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the bootloader will be installed to when local booting a
|
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partition image on a ppc64* system.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
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:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
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params = {'root_uuid': root_uuid,
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'efi_system_part_uuid': efi_system_part_uuid,
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'prep_boot_part_uuid': prep_boot_part_uuid,
|
|
'target_boot_mode': target_boot_mode
|
|
}
|
|
|
|
# NOTE(TheJulia): This command explicitly sends a larger timeout
|
|
# factor to the _command call such that the agent ramdisk has enough
|
|
# time to perform its work.
|
|
# TODO(TheJulia): We should likely split install_bootloader into many
|
|
# commands at some point, even though that would not be backwards
|
|
# compatible. We could at least begin to delineate the commands apart
|
|
# over the next cycle or two so we don't need a command timeout
|
|
# extension factor.
|
|
try:
|
|
return self._command(node=node,
|
|
method='image.install_bootloader',
|
|
params=params,
|
|
poll=True)
|
|
except exception.AgentAPIError:
|
|
# NOTE(arne_wiebalck): If for software RAID and 'uefi' as the boot
|
|
# mode, we find that the IPA does not yet support the additional
|
|
# 'target_boot_mode' parameter, we need to fail. For 'bios' boot
|
|
# mode on the other hand we can retry without the parameter,
|
|
# since 'bios' is the default value the IPA will use.
|
|
if target_boot_mode == 'uefi' and software_raid:
|
|
LOG.error('Unable to pass UEFI boot mode to an out of date '
|
|
'agent ramdisk. Please contact the administrator '
|
|
'to update the ramdisk to contain an '
|
|
'ironic-python-agent version of at least 6.0.0.')
|
|
raise
|
|
else:
|
|
params = {'root_uuid': root_uuid,
|
|
'efi_system_part_uuid': efi_system_part_uuid,
|
|
'prep_boot_part_uuid': prep_boot_part_uuid
|
|
}
|
|
LOG.warning('Failed to install bootloader on first attempt '
|
|
'for node %(node)s. Falling back to older IPA '
|
|
'format.', {'node': node.uuid})
|
|
return self._command(node=node,
|
|
method='image.install_bootloader',
|
|
params=params,
|
|
poll=True)
|
|
|
|
@METRICS.timer('AgentClient.get_clean_steps')
|
|
def get_clean_steps(self, node, ports):
|
|
"""Get clean steps from agent.
|
|
|
|
:param node: A node object.
|
|
:param ports: Ports associated with the node.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
The value of key command_result is in the form of:
|
|
|
|
::
|
|
|
|
{
|
|
'clean_steps': <a list of clean steps>,
|
|
'hardware_manager_version': <manager version>
|
|
}
|
|
|
|
"""
|
|
params = {
|
|
'node': node.as_dict(secure=True),
|
|
'ports': [port.as_dict() for port in ports]
|
|
}
|
|
return self._command(node=node,
|
|
method='clean.get_clean_steps',
|
|
params=params,
|
|
wait=True)
|
|
|
|
@METRICS.timer('AgentClient.execute_clean_step')
|
|
def execute_clean_step(self, step, node, ports):
|
|
"""Execute specified clean step.
|
|
|
|
:param step: A clean step dictionary to execute.
|
|
:param node: A Node object.
|
|
:param ports: Ports associated with the node.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
The value of key command_result is in the form of:
|
|
|
|
::
|
|
|
|
{
|
|
'clean_result': <the result of execution, step specific>,
|
|
'clean_step': <the clean step issued to agent>
|
|
}
|
|
|
|
"""
|
|
params = {
|
|
'step': step,
|
|
'node': node.as_dict(secure=True),
|
|
'ports': [port.as_dict() for port in ports],
|
|
'clean_version': node.driver_internal_info.get(
|
|
'hardware_manager_version')
|
|
}
|
|
return self._command(node=node,
|
|
method='clean.execute_clean_step',
|
|
params=params)
|
|
|
|
@METRICS.timer('AgentClient.get_deploy_steps')
|
|
def get_deploy_steps(self, node, ports):
|
|
"""Get deploy steps from agent.
|
|
|
|
:param node: A node object.
|
|
:param ports: Ports associated with the node.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
The value of key command_result is in the form of:
|
|
|
|
::
|
|
|
|
{
|
|
'deploy_steps': <a list of deploy steps>,
|
|
'hardware_manager_version': <manager version>
|
|
}
|
|
|
|
"""
|
|
params = {
|
|
'node': node.as_dict(secure=True),
|
|
'ports': [port.as_dict() for port in ports]
|
|
}
|
|
return self._command(node=node,
|
|
method='deploy.get_deploy_steps',
|
|
params=params,
|
|
wait=True)
|
|
|
|
@METRICS.timer('AgentClient.execute_deploy_step')
|
|
def execute_deploy_step(self, step, node, ports):
|
|
"""Execute specified deploy step.
|
|
|
|
:param step: A deploy step dictionary to execute.
|
|
:param node: A Node object.
|
|
:param ports: Ports associated with the node.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
The value of key command_result is in the form of:
|
|
|
|
::
|
|
|
|
{
|
|
'deploy_result': <the result of execution, step specific>,
|
|
'deploy_step': <the deploy step issued to agent>
|
|
}
|
|
|
|
"""
|
|
params = {
|
|
'step': step,
|
|
'node': node.as_dict(secure=True),
|
|
'ports': [port.as_dict() for port in ports],
|
|
'deploy_version': node.driver_internal_info.get(
|
|
'hardware_manager_version')
|
|
}
|
|
return self._command(node=node,
|
|
method='deploy.execute_deploy_step',
|
|
params=params)
|
|
|
|
@METRICS.timer('AgentClient.get_partition_uuids')
|
|
def get_partition_uuids(self, node):
|
|
"""Get deploy steps from agent.
|
|
|
|
:param node: A node object.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
|
|
"""
|
|
return self._command(node=node,
|
|
method='standby.get_partition_uuids',
|
|
params={},
|
|
wait=True)
|
|
|
|
@METRICS.timer('AgentClient.power_off')
|
|
def power_off(self, node):
|
|
"""Soft powers off the bare metal node by shutting down ramdisk OS.
|
|
|
|
:param node: A Node object.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
|
return self._command(node=node,
|
|
method='standby.power_off',
|
|
params={})
|
|
|
|
@METRICS.timer('AgentClient.reboot')
|
|
def reboot(self, node):
|
|
"""Soft reboots the bare metal node by shutting down ramdisk OS.
|
|
|
|
:param node: A Node object.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
|
return self._command(node=node,
|
|
method='standby.%s' % REBOOT_COMMAND,
|
|
params={})
|
|
|
|
@METRICS.timer('AgentClient.sync')
|
|
def sync(self, node):
|
|
"""Flush file system buffers forcing changed blocks to disk.
|
|
|
|
:param node: A Node object.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
|
return self._command(node=node,
|
|
method='standby.sync',
|
|
params={},
|
|
wait=True)
|
|
|
|
@METRICS.timer('AgentClient.collect_system_logs')
|
|
def collect_system_logs(self, node):
|
|
"""Collect and package diagnostic and support data from the ramdisk.
|
|
|
|
:param node: A Node object.
|
|
:raises: IronicException when failed to issue the request or there was
|
|
a malformed response from the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
|
return self._command(node=node,
|
|
method='log.collect_system_logs',
|
|
params={},
|
|
wait=True)
|
|
|
|
@METRICS.timer('AgentClient.finalize_rescue')
|
|
def finalize_rescue(self, node):
|
|
"""Instruct the ramdisk to finalize entering of rescue mode.
|
|
|
|
:param node: A Node object.
|
|
:raises: IronicException if rescue_password is missing, or when failed
|
|
to issue the request, or there was a malformed response from
|
|
the agent.
|
|
:raises: AgentAPIError when agent failed to execute specified command.
|
|
:raises: AgentInProgress when the command fails to execute as the agent
|
|
is presently executing the prior command.
|
|
:raises: InstanceRescueFailure when the agent ramdisk is too old
|
|
to support transmission of the rescue password.
|
|
:returns: A dict containing command response from agent.
|
|
See :func:`get_commands_status` for a command result sample.
|
|
"""
|
|
rescue_pass = node.instance_info.get('hashed_rescue_password')
|
|
# TODO(TheJulia): Remove fallback to use the fallback_rescue_password
|
|
# in the Victoria cycle.
|
|
fallback_rescue_pass = node.instance_info.get(
|
|
'rescue_password')
|
|
if not rescue_pass:
|
|
raise exception.IronicException(_('Agent rescue requires '
|
|
'rescue_password in '
|
|
'instance_info'))
|
|
params = {'rescue_password': rescue_pass,
|
|
'hashed': True}
|
|
try:
|
|
return self._command(node=node,
|
|
method='rescue.finalize_rescue',
|
|
params=params)
|
|
except exception.AgentAPIError:
|
|
if CONF.conductor.require_rescue_password_hashed:
|
|
raise exception.InstanceRescueFailure(
|
|
_('Unable to rescue node due to an out of date agent '
|
|
'ramdisk. Please contact the administrator to update '
|
|
'the rescue ramdisk to contain an ironic-python-agent '
|
|
'version of at least 6.0.0.'))
|
|
else:
|
|
params = {'rescue_password': fallback_rescue_pass}
|
|
return self._command(node=node,
|
|
method='rescue.finalize_rescue',
|
|
params=params)
|