3b41868802
Hostnames with underscores caused a deployment failure. Update to use a double underscore as a delimiter and provide a design validator to check that hostnames do not contain it. Closes #78 Change-Id: Ib148aed5cffe7fd8bc08441eaef8a45af6601bdd
508 lines
18 KiB
Python
508 lines
18 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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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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"""Model representing MAAS node/machine resource."""
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import logging
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import drydock_provisioner.error as errors
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import drydock_provisioner.drivers.node.maasdriver.models.base as model_base
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import drydock_provisioner.drivers.node.maasdriver.models.interface as maas_interface
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import drydock_provisioner.drivers.node.maasdriver.models.blockdev as maas_blockdev
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import drydock_provisioner.drivers.node.maasdriver.models.volumegroup as maas_vg
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from bson import BSON
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LOG = logging.getLogger(__name__)
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class Machine(model_base.ResourceBase):
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resource_url = 'machines/{resource_id}/'
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fields = [
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'resource_id',
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'hostname',
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'power_type',
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'power_state',
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'power_parameters',
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'interfaces',
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'boot_interface',
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'memory',
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'cpu_count',
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'tag_names',
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'status_name',
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'boot_mac',
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'boot_ip',
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'owner_data',
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'block_devices',
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'volume_groups',
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]
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json_fields = ['hostname', 'power_type']
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def __init__(self, api_client, **kwargs):
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super(Machine, self).__init__(api_client, **kwargs)
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# Replace generic dicts with interface collection model
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if hasattr(self, 'resource_id'):
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self.interfaces = maas_interface.Interfaces(
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api_client, system_id=self.resource_id)
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self.interfaces.refresh()
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try:
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self.block_devices = maas_blockdev.BlockDevices(
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api_client, system_id=self.resource_id)
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self.block_devices.refresh()
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except Exception:
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self.logger.warning("Failed loading node %s block devices." %
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(self.resource_id))
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try:
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self.volume_groups = maas_vg.VolumeGroups(
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api_client, system_id=self.resource_id)
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self.volume_groups.refresh()
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except Exception:
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self.logger.warning("Failed load node %s volume groups." %
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(self.resource_id))
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else:
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self.interfaces = None
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self.block_devices = None
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self.volume_groups = None
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def interface_for_ip(self, ip_address):
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"""Find the machine interface that will respond to ip_address.
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:param ip_address: The IP address to check interfaces
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:return: The interface that responds to this IP or None
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"""
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for i in self.interfaces:
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if i.responds_to_ip(ip_address):
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return i
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return None
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def get_power_params(self):
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"""Load power parameters for this node from MaaS."""
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url = self.interpolate_url()
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resp = self.api_client.get(url, op='power_parameters')
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if resp.status_code == 200:
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self.power_parameters = resp.json()
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def reset_network_config(self):
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"""Reset the node networking configuration."""
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self.logger.info("Resetting networking configuration on node %s" %
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(self.resource_id))
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url = self.interpolate_url()
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resp = self.api_client.post(url, op='restore_networking_configuration')
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if not resp.ok:
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msg = "Error resetting network on node %s: %s - %s" \
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% (self.resource_id, resp.status_code, resp.text)
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self.logger.error(msg)
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raise errors.DriverError(msg)
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def reset_storage_config(self):
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"""Reset storage config on this machine.
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Removes all the volume groups/logical volumes and all the physical
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device partitions on this machine.
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"""
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self.logger.info("Resetting storage configuration on node %s" %
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(self.resource_id))
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if self.volume_groups is not None and self.volume_groups.len() > 0:
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for vg in self.volume_groups:
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self.logger.debug("Removing VG %s" % vg.name)
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vg.delete()
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else:
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self.logger.debug("No VGs configured on node %s" %
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(self.resource_id))
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if self.block_devices is not None:
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for d in self.block_devices:
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if d.partitions is not None and d.partitions.len() > 0:
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self.logger.debug(
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"Clearing partitions on device %s" % d.name)
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d.clear_partitions()
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else:
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self.logger.debug(
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"No partitions found on device %s" % d.name)
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else:
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self.logger.debug("No block devices found on node %s" %
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(self.resource_id))
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def set_storage_layout(self,
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layout_type='flat',
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root_device=None,
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root_size=None,
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boot_size=None,
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root_lv_size=None,
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root_vg_name=None,
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root_lv_name=None):
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"""Set machine storage layout for the root disk.
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:param layout_type: Whether to use 'flat' (partitions) or 'lvm' for the root filesystem
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:param root_device: Name of the block device to place the root partition on
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:param root_size: Size of the root partition in bytes
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:param boot_size: Size of the boot partition in bytes
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:param root_lv_size: Size of the root logical volume in bytes for LVM layout
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:param root_vg_name: Name of the volume group with root LV
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:param root_lv_name: Name of the root LV
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"""
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try:
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url = self.interpolate_url()
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self.block_devices.refresh()
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root_dev = self.block_devices.singleton({'name': root_device})
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if root_dev is None:
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msg = "Error: cannot find storage device %s to set as root device" % root_device
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self.logger.error(msg)
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raise errors.DriverError(msg)
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root_dev.set_bootable()
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data = {
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'storage_layout': layout_type,
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'root_device': root_dev.resource_id,
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}
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self.logger.debug("Setting node %s storage layout to %s" %
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(self.hostname, layout_type))
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if root_size:
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data['root_size'] = root_size
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if boot_size:
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data['boot_size'] = boot_size
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if layout_type == 'lvm':
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if root_lv_size:
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data['lv_size'] = root_lv_size
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if root_vg_name:
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data['vg_name'] = root_vg_name
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if root_lv_name:
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data['lv_name'] = root_lv_name
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resp = self.api_client.post(
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url, op='set_storage_layout', files=data)
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if not resp.ok:
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raise Exception("MAAS Error: %s - %s" % (resp.status_code,
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resp.text))
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except Exception as ex:
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msg = "Error: failed configuring node %s storage layout: %s" % (
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self.resource_id, str(ex))
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self.logger.error(msg)
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raise errors.DriverError(msg)
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def release(self, erase_disk=False):
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"""Release a node so it can be redeployed.
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:param erase_disk: If true, the local disks on the machine will be quick wiped
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"""
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url = self.interpolate_url()
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options = {'erase': erase_disk}
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resp = self.api_client.post(url, op='release', files=options)
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if not resp.ok:
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brief_msg = ("Error releasing node, received HTTP %s from MaaS" %
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resp.status_code)
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self.logger.error(brief_msg)
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self.logger.debug("MaaS response: %s" % resp.text)
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raise errors.DriverError(brief_msg)
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def commission(self, debug=False):
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"""Start the MaaS commissioning process.
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:param debug: If true, enable ssh on the node and leave it power up after commission
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"""
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url = self.interpolate_url()
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# If we want to debug this node commissioning, enable SSH
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# after commissioning and leave the node powered up
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options = {'enable_ssh': '1' if debug else '0'}
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resp = self.api_client.post(url, op='commission', files=options)
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# Need to sort out how to handle exceptions
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if not resp.ok:
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self.logger.error(
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"Error commissioning node, received HTTP %s from MaaS" %
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resp.status_code)
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self.logger.debug("MaaS response: %s" % resp.text)
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raise errors.DriverError(
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"Error commissioning node, received HTTP %s from MaaS" %
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resp.status_code)
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def deploy(self, user_data=None, platform=None, kernel=None):
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"""Start the MaaS deployment process.
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:param user_data: cloud-init user data
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:param platform: Which image to install
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:param kernel: Which kernel to enable
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"""
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deploy_options = {}
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if user_data is not None:
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deploy_options['user_data'] = user_data
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if platform is not None:
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deploy_options['distro_series'] = platform
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if kernel is not None:
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deploy_options['hwe_kernel'] = kernel
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url = self.interpolate_url()
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resp = self.api_client.post(
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url,
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op='deploy',
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files=deploy_options if len(deploy_options) > 0 else None)
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if not resp.ok:
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self.logger.error(
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"Error deploying node, received HTTP %s from MaaS" %
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resp.status_code)
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self.logger.debug("MaaS response: %s" % resp.text)
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raise errors.DriverError(
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"Error deploying node, received HTTP %s from MaaS" %
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resp.status_code)
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def get_network_interface(self, iface_name):
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if self.interfaces is not None:
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iface = self.interfaces.singleton({'name': iface_name})
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return iface
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def get_details(self):
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url = self.interpolate_url()
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resp = self.api_client.get(url, op='details')
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if resp.status_code == 200:
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detail_config = BSON.decode(resp.content)
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return detail_config
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def set_owner_data(self, key, value):
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"""Add/update/remove node owner data.
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If the machine is not currently allocated to a user
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it cannot have owner data
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:param key: Key of the owner data
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:param value: Value of the owner data. If None, the key is removed
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"""
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url = self.interpolate_url()
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resp = self.api_client.post(
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url, op='set_owner_data', files={key: value})
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if resp.status_code != 200:
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self.logger.error(
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"Error setting node metadata, received HTTP %s from MaaS" %
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resp.status_code)
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self.logger.debug("MaaS response: %s" % resp.text)
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raise errors.DriverError(
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"Error setting node metadata, received HTTP %s from MaaS" %
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resp.status_code)
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def to_dict(self):
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"""Serialize this resource instance into a dict.
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The dict format matches the
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MAAS representation of the resource
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"""
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data_dict = {}
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for f in self.json_fields:
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if getattr(self, f, None) is not None:
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if f == 'resource_id':
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data_dict['system_id'] = getattr(self, f)
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else:
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data_dict[f] = getattr(self, f)
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return data_dict
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@classmethod
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def from_dict(cls, api_client, obj_dict):
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"""Create a instance of this resource class based on a dict.
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Dict format matches MaaS type attributes
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Customized for Machine due to use of system_id instead of id
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as resource key
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:param api_client: Instance of api_client.MaasRequestFactory for accessing MaaS API
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:param obj_dict: Python dict as parsed from MaaS API JSON representing this resource type
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"""
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refined_dict = {k: obj_dict.get(k, None) for k in cls.fields}
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if 'system_id' in obj_dict.keys():
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refined_dict['resource_id'] = obj_dict.get('system_id')
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# Capture the boot interface MAC to allow for node id of VMs
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if 'boot_interface' in obj_dict.keys():
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if isinstance(obj_dict['boot_interface'], dict):
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refined_dict['boot_mac'] = obj_dict['boot_interface'][
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'mac_address']
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if len(obj_dict['boot_interface']['links']) > 0:
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refined_dict['boot_ip'] = obj_dict['boot_interface'][
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'links'][0].get('ip_address', None)
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i = cls(api_client, **refined_dict)
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return i
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class Machines(model_base.ResourceCollectionBase):
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collection_url = 'machines/'
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collection_resource = Machine
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def __init__(self, api_client, **kwargs):
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super(Machines, self).__init__(api_client)
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# Add the OOB power parameters to each machine instance
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def collect_power_params(self):
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for k, v in self.resources.items():
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v.get_power_params()
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def acquire_node(self, node_name):
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"""Acquire a commissioned node fro deployment.
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:param node_name: The hostname of a node to acquire
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"""
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self.refresh()
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node = self.singleton({'hostname': node_name})
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if node is None:
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self.logger.info("Node %s not found" % (node_name))
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raise errors.DriverError("Node %s not found" % (node_name))
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if node.status_name != 'Ready':
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self.logger.info(
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"Node %s status '%s' does not allow deployment, should be 'Ready'."
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% (node_name, node.status_name))
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raise errors.DriverError(
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"Node %s status '%s' does not allow deployment, should be 'Ready'."
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% (node_name, node.status_name))
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url = self.interpolate_url()
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resp = self.api_client.post(
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url, op='allocate', files={'system_id': node.resource_id})
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if not resp.ok:
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self.logger.error(
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"Error acquiring node, MaaS returned %s" % resp.status_code)
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self.logger.debug("MaaS response: %s" % resp.text)
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raise errors.DriverError(
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"Error acquiring node, MaaS returned %s" % resp.status_code)
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return node
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def identify_baremetal_node(self, node_model, update_name=True):
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"""Find MaaS node resource matching Drydock BaremetalNode.
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Search all the defined MaaS Machines and attempt to match
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one against the provided Drydock BaremetalNode model. Update
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the MaaS instance with the correct hostname
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:param node_model: Instance of objects.node.BaremetalNode to search MaaS for matching resource
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:param update_name: Whether Drydock should update the MaaS resource name to match the Drydock design
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"""
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maas_node = None
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if node_model.oob_type == 'ipmi':
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node_oob_network = node_model.oob_parameters['network']
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node_oob_ip = node_model.get_network_address(node_oob_network)
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if node_oob_ip is None:
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self.logger.warn("Node model missing OOB IP address")
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raise ValueError('Node model missing OOB IP address')
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try:
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self.collect_power_params()
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maas_node = self.singleton({
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'power_params.power_address':
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node_oob_ip
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})
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except ValueError:
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self.logger.warn(
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"Error locating matching MaaS resource for OOB IP %s" %
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(node_oob_ip))
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return None
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else:
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# Use boot_mac for node's not using IPMI
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node_boot_mac = node_model.boot_mac
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if node_boot_mac is not None:
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maas_node = self.singleton({'boot_mac': node_model.boot_mac})
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if maas_node is None:
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self.logger.info(
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"Could not locate node %s in MaaS" % node_model.name)
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return None
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self.logger.debug("Found MaaS resource %s matching Node %s" %
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(maas_node.resource_id, node_model.get_id()))
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if maas_node.hostname != node_model.name and update_name:
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maas_node.hostname = node_model.name
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maas_node.update()
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self.logger.debug("Updated MaaS resource %s hostname to %s" %
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(maas_node.resource_id, node_model.name))
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return maas_node
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def query(self, query):
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"""Custom query method to deal with complex fields."""
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result = list(self.resources.values())
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for (k, v) in query.items():
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if k.startswith('power_params.'):
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field = k[13:]
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result = [
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i for i in result if str(
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getattr(i, 'power_parameters', {}).get(field, None)) ==
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str(v)
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]
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else:
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result = [
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i for i in result if str(getattr(i, k, None)) == str(v)
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]
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return result
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def add(self, res):
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"""Create a new resource in this collection in MaaS.
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Customize as Machine resources use 'system_id' instead of 'id'
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:param res: A instance of the Machine model
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"""
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data_dict = res.to_dict()
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url = self.interpolate_url()
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resp = self.api_client.post(url, files=data_dict)
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if resp.status_code == 200:
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resp_json = resp.json()
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res.set_resource_id(resp_json.get('system_id'))
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return res
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raise errors.DriverError(
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"Failed updating MAAS url %s - return code %s" %
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(url, resp.status_code))
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