# Copyright 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Boot Interface for iLO drivers and its supporting methods.
"""
import os
import tempfile
from ironic_lib import metrics_utils
from ironic_lib import utils as ironic_utils
from oslo_config import cfg
from oslo_log import log as logging
from oslo_utils import excutils
import six.moves.urllib.parse as urlparse
from ironic.common import boot_devices
from ironic.common import exception
from ironic.common.glance_service import service_utils
from ironic.common.i18n import _
from ironic.common import image_service
from ironic.common import images
from ironic.common import states
from ironic.common import swift
from ironic.conductor import utils as manager_utils
from ironic.drivers import base
from ironic.drivers.modules import boot_mode_utils
from ironic.drivers.modules import deploy_utils
from ironic.drivers.modules.ilo import common as ilo_common
from ironic.drivers.modules import ipxe
from ironic.drivers.modules import pxe
LOG = logging.getLogger(__name__)
METRICS = metrics_utils.get_metrics_logger(__name__)
CONF = cfg.CONF
REQUIRED_PROPERTIES = {
'ilo_deploy_iso': _("UUID (from Glance) of the deployment ISO. "
"Required.")
}
RESCUE_PROPERTIES = {
'ilo_rescue_iso': _("UUID (from Glance) of the rescue ISO. Only "
"required if rescue mode is being used and ironic is "
"managing booting the rescue ramdisk.")
}
COMMON_PROPERTIES = REQUIRED_PROPERTIES
[docs]def parse_driver_info(node, mode='deploy'):
"""Gets the driver specific Node deployment info.
This method validates whether the 'driver_info' property of the
supplied node contains the required information for this driver to
deploy images to the node.
:param node: a single Node.
:param mode: Label indicating a deploy or rescue operation being
carried out on the node. Supported values are
'deploy' and 'rescue'. Defaults to 'deploy', indicating
deploy operation is being carried out.
:returns: A dict with the driver_info values.
:raises: MissingParameterValue, if any of the required parameters are
missing.
"""
info = node.driver_info
d_info = {}
if mode == 'rescue':
d_info['ilo_rescue_iso'] = info.get('ilo_rescue_iso')
else:
d_info['ilo_deploy_iso'] = info.get('ilo_deploy_iso')
error_msg = (_("Error validating iLO virtual media for %s. Some "
"parameters were missing in node's driver_info") % mode)
deploy_utils.check_for_missing_params(d_info, error_msg)
return d_info
def _get_boot_iso_object_name(node):
"""Returns the boot iso object name for a given node.
:param node: the node for which object name is to be provided.
"""
return "boot-%s" % node.uuid
def _get_boot_iso(task, root_uuid):
"""This method returns a boot ISO to boot the node.
It chooses one of the three options in the order as below:
1. Does nothing if 'ilo_boot_iso' is present in node's instance_info and
'boot_iso_created_in_web_server' is not set in 'driver_internal_info'.
2. Image deployed has a meta-property 'boot_iso' in Glance. This should
refer to the UUID of the boot_iso which exists in Glance.
3. Generates a boot ISO on the fly using kernel and ramdisk mentioned in
the image deployed. It uploads the generated boot ISO to Swift.
:param task: a TaskManager instance containing the node to act on.
:param root_uuid: the uuid of the root partition.
:returns: boot ISO URL. Should be either of below:
* A Swift object - It should be of format 'swift:<object-name>'. It is
assumed that the image object is present in
CONF.ilo.swift_ilo_container;
* A Glance image - It should be format 'glance://<glance-image-uuid>'
or just <glance-image-uuid>;
* An HTTP URL.
On error finding the boot iso, it returns None.
:raises: MissingParameterValue, if any of the required parameters are
missing in the node's driver_info or instance_info.
:raises: InvalidParameterValue, if any of the parameters have invalid
value in the node's driver_info or instance_info.
:raises: SwiftOperationError, if operation with Swift fails.
:raises: ImageCreationFailed, if creation of boot ISO failed.
:raises: exception.ImageRefValidationFailed if ilo_boot_iso is not
HTTP(S) URL.
"""
LOG.debug("Trying to get a boot ISO to boot the baremetal node")
# Option 1 - Check if user has provided ilo_boot_iso in node's
# instance_info
driver_internal_info = task.node.driver_internal_info
boot_iso_created_in_web_server = (
driver_internal_info.get('boot_iso_created_in_web_server'))
if (task.node.instance_info.get('ilo_boot_iso')
and not boot_iso_created_in_web_server):
LOG.debug("Using ilo_boot_iso provided in node's instance_info")
boot_iso = task.node.instance_info['ilo_boot_iso']
if not service_utils.is_glance_image(boot_iso):
try:
image_service.HttpImageService().validate_href(boot_iso)
except exception.ImageRefValidationFailed:
with excutils.save_and_reraise_exception():
LOG.error("Virtual media deploy accepts only Glance "
"images or HTTP(S) URLs as "
"instance_info['ilo_boot_iso']. Either %s "
"is not a valid HTTP(S) URL or is "
"not reachable.", boot_iso)
return task.node.instance_info['ilo_boot_iso']
# Option 2 - Check if user has provided a boot_iso in Glance. If boot_iso
# is a supported non-glance href execution will proceed to option 3.
deploy_info = _parse_deploy_info(task.node)
image_href = deploy_info['image_source']
image_properties = (
images.get_image_properties(
task.context, image_href, ['boot_iso', 'kernel_id', 'ramdisk_id']))
boot_iso_uuid = image_properties.get('boot_iso')
kernel_href = (task.node.instance_info.get('kernel')
or image_properties.get('kernel_id'))
ramdisk_href = (task.node.instance_info.get('ramdisk')
or image_properties.get('ramdisk_id'))
if boot_iso_uuid:
LOG.debug("Found boot_iso %s in Glance", boot_iso_uuid)
return boot_iso_uuid
if not kernel_href or not ramdisk_href:
LOG.error("Unable to find kernel or ramdisk for "
"image %(image)s to generate boot ISO for %(node)s",
{'image': image_href, 'node': task.node.uuid})
return
# NOTE(rameshg87): Functionality to share the boot ISOs created for
# similar instances (instances with same deployed image) is
# not implemented as of now. Creation/Deletion of such a shared boot ISO
# will require synchronisation across conductor nodes for the shared boot
# ISO. Such a synchronisation mechanism doesn't exist in ironic as of now.
# Option 3 - Create boot_iso from kernel/ramdisk, upload to Swift
# or web server and provide its name.
deploy_iso_uuid = deploy_info['ilo_deploy_iso']
boot_mode = boot_mode_utils.get_boot_mode(task.node)
boot_iso_object_name = _get_boot_iso_object_name(task.node)
kernel_params = ""
if deploy_utils.get_boot_option(task.node) == "ramdisk":
i_info = task.node.instance_info
kernel_params = "root=/dev/ram0 text "
kernel_params += i_info.get("ramdisk_kernel_arguments", "")
else:
kernel_params = CONF.pxe.pxe_append_params
with tempfile.NamedTemporaryFile(dir=CONF.tempdir) as fileobj:
boot_iso_tmp_file = fileobj.name
images.create_boot_iso(task.context, boot_iso_tmp_file,
kernel_href, ramdisk_href,
deploy_iso_href=deploy_iso_uuid,
root_uuid=root_uuid,
kernel_params=kernel_params,
boot_mode=boot_mode)
if CONF.ilo.use_web_server_for_images:
boot_iso_url = (
ilo_common.copy_image_to_web_server(boot_iso_tmp_file,
boot_iso_object_name))
driver_internal_info = task.node.driver_internal_info
driver_internal_info['boot_iso_created_in_web_server'] = True
task.node.driver_internal_info = driver_internal_info
task.node.save()
LOG.debug("Created boot_iso %(boot_iso)s for node %(node)s",
{'boot_iso': boot_iso_url, 'node': task.node.uuid})
return boot_iso_url
else:
container = CONF.ilo.swift_ilo_container
swift_api = swift.SwiftAPI()
swift_api.create_object(container, boot_iso_object_name,
boot_iso_tmp_file)
LOG.debug("Created boot_iso %s in Swift", boot_iso_object_name)
return 'swift:%s' % boot_iso_object_name
def _clean_up_boot_iso_for_instance(node):
"""Deletes the boot ISO if it was created for the instance.
:param node: an ironic node object.
"""
ilo_boot_iso = node.instance_info.get('ilo_boot_iso')
if not ilo_boot_iso:
return
if ilo_boot_iso.startswith('swift'):
swift_api = swift.SwiftAPI()
container = CONF.ilo.swift_ilo_container
boot_iso_object_name = _get_boot_iso_object_name(node)
try:
swift_api.delete_object(container, boot_iso_object_name)
except exception.SwiftOperationError as e:
LOG.exception("Failed to clean up boot ISO for node "
"%(node)s. Error: %(error)s.",
{'node': node.uuid, 'error': e})
elif CONF.ilo.use_web_server_for_images:
result = urlparse.urlparse(ilo_boot_iso)
ilo_boot_iso_name = os.path.basename(result.path)
boot_iso_path = os.path.join(
CONF.deploy.http_root, ilo_boot_iso_name)
ironic_utils.unlink_without_raise(boot_iso_path)
def _parse_deploy_info(node):
"""Gets the instance and driver specific Node deployment info.
This method validates whether the 'instance_info' and 'driver_info'
property of the supplied node contains the required information for
this driver to deploy images to the node.
:param node: a single Node.
:returns: A dict with the instance_info and driver_info values.
:raises: MissingParameterValue, if any of the required parameters are
missing.
:raises: InvalidParameterValue, if any of the parameters have invalid
value.
"""
info = {}
info.update(deploy_utils.get_image_instance_info(node))
info.update(parse_driver_info(node))
return info
def _validate_driver_info(task):
"""Validate the prerequisites for virtual media based boot.
This method validates whether the 'driver_info' property of the
supplied node contains the required information for this driver.
:param task: a TaskManager instance containing the node to act on.
:raises: InvalidParameterValue if any parameters are incorrect
:raises: MissingParameterValue if some mandatory information
is missing on the node
"""
node = task.node
ilo_common.parse_driver_info(node)
if 'ilo_deploy_iso' not in node.driver_info:
raise exception.MissingParameterValue(_(
"Missing 'ilo_deploy_iso' parameter in node's 'driver_info'."))
deploy_iso = node.driver_info['ilo_deploy_iso']
if not service_utils.is_glance_image(deploy_iso):
try:
image_service.HttpImageService().validate_href(deploy_iso)
except exception.ImageRefValidationFailed:
raise exception.InvalidParameterValue(_(
"Virtual media boot accepts only Glance images or "
"HTTP(S) as driver_info['ilo_deploy_iso']. Either '%s' "
"is not a glance UUID or not a valid HTTP(S) URL or "
"the given URL is not reachable.") % deploy_iso)
def _validate_instance_image_info(task):
"""Validate instance image information for the task's node.
:param task: a TaskManager instance containing the node to act on.
:raises: InvalidParameterValue, if some information is invalid.
:raises: MissingParameterValue if 'kernel_id' and 'ramdisk_id' are
missing in the Glance image or 'kernel' and 'ramdisk' not provided
in instance_info for non-Glance image.
"""
node = task.node
d_info = _parse_deploy_info(node)
if node.driver_internal_info.get('is_whole_disk_image'):
props = []
elif service_utils.is_glance_image(d_info['image_source']):
props = ['kernel_id', 'ramdisk_id']
else:
props = ['kernel', 'ramdisk']
deploy_utils.validate_image_properties(task.context, d_info, props)
def _disable_secure_boot(task):
"""Disables secure boot on node, if secure boot is enabled on node.
This method checks if secure boot is enabled on node. If enabled, it
disables same and returns True.
:param task: a TaskManager instance containing the node to act on.
:returns: It returns True, if secure boot was successfully disabled on
the node.
It returns False, if secure boot on node is in disabled state
or if secure boot feature is not supported by the node.
:raises: IloOperationError, if some operation on iLO failed.
"""
cur_sec_state = False
try:
cur_sec_state = ilo_common.get_secure_boot_mode(task)
except exception.IloOperationNotSupported:
LOG.debug('Secure boot mode is not supported for node %s',
task.node.uuid)
return False
if cur_sec_state:
LOG.debug('Disabling secure boot for node %s', task.node.uuid)
ilo_common.set_secure_boot_mode(task, False)
return True
return False
[docs]def prepare_node_for_deploy(task):
"""Common preparatory steps for all iLO drivers.
This method performs common preparatory steps required for all drivers.
1. Power off node
2. Disables secure boot, if it is in enabled state.
3. Updates boot_mode capability to 'uefi' if secure boot is requested.
4. Changes boot mode of the node if secure boot is disabled currently.
:param task: a TaskManager instance containing the node to act on.
:raises: IloOperationError, if some operation on iLO failed.
"""
manager_utils.node_power_action(task, states.POWER_OFF)
# Boot mode can be changed only if secure boot is in disabled state.
# secure boot and boot mode cannot be changed together.
change_boot_mode = True
# Disable secure boot on the node if it is in enabled state.
if _disable_secure_boot(task):
change_boot_mode = False
if change_boot_mode:
ilo_common.update_boot_mode(task)
else:
# Need to update boot mode that will be used during deploy, if one is
# not provided.
# Since secure boot was disabled, we are in 'uefi' boot mode.
if boot_mode_utils.get_boot_mode_for_deploy(task.node) is None:
instance_info = task.node.instance_info
instance_info['deploy_boot_mode'] = 'uefi'
task.node.instance_info = instance_info
task.node.save()
[docs]def disable_secure_boot_if_supported(task):
"""Disables secure boot on node, does not throw if its not supported.
:param task: a TaskManager instance containing the node to act on.
:raises: IloOperationError, if some operation on iLO failed.
"""
try:
ilo_common.update_secure_boot_mode(task, False)
# We need to handle IloOperationNotSupported exception so that if
# the user has incorrectly specified the Node capability
# 'secure_boot' to a node that does not have that capability and
# attempted deploy. Handling this exception here, will help the
# user to tear down such a Node.
except exception.IloOperationNotSupported:
LOG.warning('Secure boot mode is not supported for node %s',
task.node.uuid)
[docs]class IloPXEBoot(pxe.PXEBoot):
[docs] @METRICS.timer('IloPXEBoot.prepare_ramdisk')
def prepare_ramdisk(self, task, ramdisk_params):
"""Prepares the boot of Ironic ramdisk using PXE.
This method prepares the boot of the deploy or rescue ramdisk after
reading relevant information from the node's driver_info and
instance_info.
:param task: a task from TaskManager.
:param ramdisk_params: the parameters to be passed to the ramdisk.
:returns: None
:raises: MissingParameterValue, if some information is missing in
node's driver_info or instance_info.
:raises: InvalidParameterValue, if some information provided is
invalid.
:raises: IronicException, if some power or set boot boot device
operation failed on the node.
:raises: IloOperationError, if some operation on iLO failed.
"""
if task.node.provision_state in (states.DEPLOYING, states.RESCUING,
states.CLEANING):
prepare_node_for_deploy(task)
super(IloPXEBoot, self).prepare_ramdisk(task, ramdisk_params)
[docs] @METRICS.timer('IloPXEBoot.prepare_instance')
def prepare_instance(self, task):
"""Prepares the boot of instance.
This method prepares the boot of the instance after reading
relevant information from the node's instance_info. In case of netboot,
it updates the dhcp entries and switches the PXE config. In case of
localboot, it cleans up the PXE config.
In case of 'boot from volume', it updates the iSCSI info onto iLO and
sets the node to boot from 'UefiTarget' boot device.
:param task: a task from TaskManager.
:returns: None
:raises: IloOperationError, if some operation on iLO failed.
"""
# Set boot mode
ilo_common.update_boot_mode(task)
# Need to enable secure boot, if being requested
ilo_common.update_secure_boot_mode(task, True)
boot_mode = boot_mode_utils.get_boot_mode(task.node)
if deploy_utils.is_iscsi_boot(task) and boot_mode == 'uefi':
# Need to set 'ilo_uefi_iscsi_boot' param for clean up
driver_internal_info = task.node.driver_internal_info
driver_internal_info['ilo_uefi_iscsi_boot'] = True
task.node.driver_internal_info = driver_internal_info
task.node.save()
# It will set iSCSI info onto iLO
task.driver.management.set_iscsi_boot_target(task)
manager_utils.node_set_boot_device(task, boot_devices.ISCSIBOOT,
persistent=True)
else:
# Volume boot in BIOS boot mode is handled using
# PXE boot interface
super(IloPXEBoot, self).prepare_instance(task)
[docs] @METRICS.timer('IloPXEBoot.clean_up_instance')
def clean_up_instance(self, task):
"""Cleans up the boot of instance.
This method cleans up the PXE environment that was setup for booting
the instance. It unlinks the instance kernel/ramdisk in the node's
directory in tftproot and removes it's PXE config.
In case of UEFI iSCSI booting, it cleans up iSCSI target information
from the node.
:param task: a task from TaskManager.
:returns: None
:raises: IloOperationError, if some operation on iLO failed.
"""
manager_utils.node_power_action(task, states.POWER_OFF)
disable_secure_boot_if_supported(task)
driver_internal_info = task.node.driver_internal_info
if (deploy_utils.is_iscsi_boot(task)
and task.node.driver_internal_info.get('ilo_uefi_iscsi_boot')):
# It will clear iSCSI info from iLO in case of booting from
# volume in UEFI boot mode
task.driver.management.clear_iscsi_boot_target(task)
driver_internal_info.pop('ilo_uefi_iscsi_boot', None)
task.node.driver_internal_info = driver_internal_info
task.node.save()
else:
# Volume boot in BIOS boot mode is handled using
# PXE boot interface
super(IloPXEBoot, self).clean_up_instance(task)
[docs]class IloiPXEBoot(ipxe.iPXEBoot):
[docs] @METRICS.timer('IloiPXEBoot.prepare_ramdisk')
def prepare_ramdisk(self, task, ramdisk_params):
"""Prepares the boot of Ironic ramdisk using PXE.
This method prepares the boot of the deploy or rescue ramdisk after
reading relevant information from the node's driver_info and
instance_info.
:param task: a task from TaskManager.
:param ramdisk_params: the parameters to be passed to the ramdisk.
:returns: None
:raises: MissingParameterValue, if some information is missing in
node's driver_info or instance_info.
:raises: InvalidParameterValue, if some information provided is
invalid.
:raises: IronicException, if some power or set boot boot device
operation failed on the node.
:raises: IloOperationError, if some operation on iLO failed.
"""
if task.node.provision_state in (states.DEPLOYING, states.RESCUING,
states.CLEANING):
prepare_node_for_deploy(task)
super(IloiPXEBoot, self).prepare_ramdisk(task, ramdisk_params)
[docs] @METRICS.timer('IloiPXEBoot.prepare_instance')
def prepare_instance(self, task):
"""Prepares the boot of instance.
This method prepares the boot of the instance after reading
relevant information from the node's instance_info. In case of netboot,
it updates the dhcp entries and switches the PXE config. In case of
localboot, it cleans up the PXE config.
In case of 'boot from volume', it updates the iSCSI info onto iLO and
sets the node to boot from 'UefiTarget' boot device.
:param task: a task from TaskManager.
:returns: None
:raises: IloOperationError, if some operation on iLO failed.
"""
# Set boot mode
ilo_common.update_boot_mode(task)
# Need to enable secure boot, if being requested
ilo_common.update_secure_boot_mode(task, True)
boot_mode = boot_mode_utils.get_boot_mode(task.node)
if deploy_utils.is_iscsi_boot(task) and boot_mode == 'uefi':
# Need to set 'ilo_uefi_iscsi_boot' param for clean up
driver_internal_info = task.node.driver_internal_info
driver_internal_info['ilo_uefi_iscsi_boot'] = True
task.node.driver_internal_info = driver_internal_info
task.node.save()
# It will set iSCSI info onto iLO
task.driver.management.set_iscsi_boot_target(task)
manager_utils.node_set_boot_device(task, boot_devices.ISCSIBOOT,
persistent=True)
else:
# Volume boot in BIOS boot mode is handled using
# PXE boot interface
super(IloiPXEBoot, self).prepare_instance(task)
[docs] @METRICS.timer('IloiPXEBoot.clean_up_instance')
def clean_up_instance(self, task):
"""Cleans up the boot of instance.
This method cleans up the PXE environment that was setup for booting
the instance. It unlinks the instance kernel/ramdisk in the node's
directory in tftproot and removes it's PXE config.
In case of UEFI iSCSI booting, it cleans up iSCSI target information
from the node.
:param task: a task from TaskManager.
:returns: None
:raises: IloOperationError, if some operation on iLO failed.
"""
manager_utils.node_power_action(task, states.POWER_OFF)
disable_secure_boot_if_supported(task)
driver_internal_info = task.node.driver_internal_info
if (deploy_utils.is_iscsi_boot(task)
and task.node.driver_internal_info.get('ilo_uefi_iscsi_boot')):
# It will clear iSCSI info from iLO in case of booting from
# volume in UEFI boot mode
task.driver.management.clear_iscsi_boot_target(task)
driver_internal_info.pop('ilo_uefi_iscsi_boot', None)
task.node.driver_internal_info = driver_internal_info
task.node.save()
else:
# Volume boot in BIOS boot mode is handled using
# PXE boot interface
super(IloiPXEBoot, self).clean_up_instance(task)
