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

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# 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.
"""Standard set of plugins."""
import sys
import netaddr
from oslo_config import cfg
from oslo_utils import units
import six
from ironic_inspector.common.i18n import _, _LC, _LE, _LI, _LW
from ironic_inspector import conf
from ironic_inspector.plugins import base
from ironic_inspector import utils
CONF = cfg.CONF
LOG = utils.getProcessingLogger('ironic_inspector.plugins.standard')
class RootDiskSelectionHook(base.ProcessingHook):
"""Smarter root disk selection using Ironic root device hints.
This hook must always go before SchedulerHook, otherwise root_disk field
might not be updated.
"""
def before_update(self, introspection_data, node_info, **kwargs):
"""Detect root disk from root device hints and IPA inventory."""
hints = node_info.node().properties.get('root_device')
if not hints:
LOG.debug('Root device hints are not provided',
node_info=node_info, data=introspection_data)
return
if 'size' in hints:
# Special case to match IPA behaviour
try:
hints['size'] = int(hints['size'])
except (TypeError, ValueError):
raise utils.Error(_('Invalid root device size hint, expected '
'an integer, got %s') % hints['size'],
node_info=node_info, data=introspection_data)
inventory = utils.get_inventory(introspection_data,
node_info=node_info)
for disk in inventory['disks']:
properties = disk.copy()
# Root device hints are in GiB, data from IPA is in bytes
properties['size'] //= units.Gi
for name, value in hints.items():
actual = properties.get(name)
if actual != value:
LOG.debug('Disk %(disk)s does not satisfy hint '
'%(name)s=%(value)s, actual value is %(actual)s',
{'disk': disk.get('name'), 'name': name,
'value': value, 'actual': actual},
node_info=node_info, data=introspection_data)
break
else:
LOG.debug('Disk %(disk)s of size %(size)s satisfies '
'root device hints',
{'disk': disk.get('name'), 'size': disk['size']},
node_info=node_info, data=introspection_data)
introspection_data['root_disk'] = disk
return
raise utils.Error(_('No disks satisfied root device hints'),
node_info=node_info, data=introspection_data)
class SchedulerHook(base.ProcessingHook):
"""Nova scheduler required properties."""
KEYS = ('cpus', 'cpu_arch', 'memory_mb', 'local_gb')
def before_update(self, introspection_data, node_info, **kwargs):
"""Update node with scheduler properties."""
inventory = utils.get_inventory(introspection_data,
node_info=node_info)
errors = []
root_disk = introspection_data.get('root_disk')
if root_disk:
introspection_data['local_gb'] = root_disk['size'] // units.Gi
if CONF.processing.disk_partitioning_spacing:
introspection_data['local_gb'] -= 1
else:
errors.append(_('root disk is not supplied by the ramdisk and '
'root_disk_selection hook is not enabled'))
try:
introspection_data['cpus'] = int(inventory['cpu']['count'])
introspection_data['cpu_arch'] = six.text_type(
inventory['cpu']['architecture'])
except (KeyError, ValueError, TypeError):
errors.append(_('malformed or missing CPU information: %s') %
inventory.get('cpu'))
try:
introspection_data['memory_mb'] = int(
inventory['memory']['physical_mb'])
except (KeyError, ValueError, TypeError):
errors.append(_('malformed or missing memory information: %s; '
'introspection requires physical memory size '
'from dmidecode') % inventory.get('memory'))
if errors:
raise utils.Error(_('The following problems encountered: %s') %
'; '.join(errors),
node_info=node_info, data=introspection_data)
LOG.info(_LI('Discovered data: CPUs: %(cpus)s %(cpu_arch)s, '
'memory %(memory_mb)s MiB, disk %(local_gb)s GiB'),
{key: introspection_data.get(key) for key in self.KEYS},
node_info=node_info, data=introspection_data)
overwrite = CONF.processing.overwrite_existing
properties = {key: str(introspection_data[key])
for key in self.KEYS if overwrite or
not node_info.node().properties.get(key)}
node_info.update_properties(**properties)
class ValidateInterfacesHook(base.ProcessingHook):
"""Hook to validate network interfaces."""
def __init__(self):
if CONF.processing.add_ports not in conf.VALID_ADD_PORTS_VALUES:
LOG.critical(_LC('Accepted values for [processing]add_ports are '
'%(valid)s, got %(actual)s'),
{'valid': conf.VALID_ADD_PORTS_VALUES,
'actual': CONF.processing.add_ports})
sys.exit(1)
if CONF.processing.keep_ports not in conf.VALID_KEEP_PORTS_VALUES:
LOG.critical(_LC('Accepted values for [processing]keep_ports are '
'%(valid)s, got %(actual)s'),
{'valid': conf.VALID_KEEP_PORTS_VALUES,
'actual': CONF.processing.keep_ports})
sys.exit(1)
def _get_interfaces(self, data=None):
"""Convert inventory to a dict with interfaces.
:return: dict interface name -> dict with keys 'mac' and 'ip'
"""
result = {}
inventory = utils.get_inventory(data)
for iface in inventory['interfaces']:
name = iface.get('name')
mac = iface.get('mac_address')
ip = iface.get('ipv4_address')
if not name:
LOG.error(_LE('Malformed interface record: %s'),
iface, data=data)
continue
if not mac:
LOG.debug('Skipping interface %s without link information',
name, data=data)
continue
if not utils.is_valid_mac(mac):
LOG.warning(_LW('MAC %(mac)s for interface %(name)s is '
'not valid, skipping'),
{'mac': mac, 'name': name},
data=data)
continue
mac = mac.lower()
LOG.debug('Found interface %(name)s with MAC "%(mac)s" and '
'IP address "%(ip)s"',
{'name': name, 'mac': mac, 'ip': ip}, data=data)
result[name] = {'ip': ip, 'mac': mac}
return result
def _validate_interfaces(self, interfaces, data=None):
"""Validate interfaces on correctness and suitability.
:return: dict interface name -> dict with keys 'mac' and 'ip'
"""
if not interfaces:
raise utils.Error(_('No interfaces supplied by the ramdisk'),
data=data)
pxe_mac = utils.get_pxe_mac(data)
if not pxe_mac and CONF.processing.add_ports == 'pxe':
LOG.warning(_LW('No boot interface provided in the introspection '
'data, will add all ports with IP addresses'))
result = {}
for name, iface in interfaces.items():
mac = iface.get('mac')
ip = iface.get('ip')
if name == 'lo' or (ip and netaddr.IPAddress(ip).is_loopback()):
LOG.debug('Skipping local interface %s', name, data=data)
continue
if (CONF.processing.add_ports == 'pxe' and pxe_mac
and mac != pxe_mac):
LOG.debug('Skipping interface %s as it was not PXE booting',
name, data=data)
continue
elif CONF.processing.add_ports != 'all' and not ip:
LOG.debug('Skipping interface %s as it did not have '
'an IP address assigned during the ramdisk run',
name, data=data)
continue
result[name] = {'ip': ip, 'mac': mac.lower()}
if not result:
raise utils.Error(_('No suitable interfaces found in %s') %
interfaces, data=data)
return result
def before_processing(self, introspection_data, **kwargs):
"""Validate information about network interfaces."""
bmc_address = utils.get_ipmi_address_from_data(introspection_data)
if bmc_address:
introspection_data['ipmi_address'] = bmc_address
else:
LOG.debug('No BMC address provided in introspection data, '
'assuming virtual environment', data=introspection_data)
all_interfaces = self._get_interfaces(introspection_data)
interfaces = self._validate_interfaces(all_interfaces,
introspection_data)
LOG.info(_LI('Using network interface(s): %s'),
', '.join('%s %s' % (name, items)
for (name, items) in interfaces.items()),
data=introspection_data)
introspection_data['all_interfaces'] = all_interfaces
introspection_data['interfaces'] = interfaces
valid_macs = [iface['mac'] for iface in interfaces.values()]
introspection_data['macs'] = valid_macs
def before_update(self, introspection_data, node_info, **kwargs):
"""Drop ports that are not present in the data."""
if CONF.processing.keep_ports == 'present':
expected_macs = {
iface['mac']
for iface in introspection_data['all_interfaces'].values()
}
elif CONF.processing.keep_ports == 'added':
expected_macs = set(introspection_data['macs'])
else:
return
# list is required as we modify underlying dict
for port in list(node_info.ports().values()):
if port.address not in expected_macs:
LOG.info(_LI("Deleting port %(port)s as its MAC %(mac)s is "
"not in expected MAC list %(expected)s"),
{'port': port.uuid,
'mac': port.address,
'expected': list(sorted(expected_macs))},
node_info=node_info, data=introspection_data)
node_info.delete_port(port)
class RamdiskErrorHook(base.ProcessingHook):
"""Hook to process error send from the ramdisk."""
def before_processing(self, introspection_data, **kwargs):
error = introspection_data.get('error')
if error:
raise utils.Error(_('Ramdisk reported error: %s') % error,
data=introspection_data)