674 lines
27 KiB
Python
674 lines
27 KiB
Python
# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
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# Copyright (c) 2012 VMware, Inc.
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# Copyright (c) 2011 Citrix Systems, Inc.
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# Copyright 2011 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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A connection to the VMware vCenter platform.
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"""
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import re
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_serialization import jsonutils
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from oslo_vmware import api
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from oslo_vmware import exceptions as vexc
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from oslo_vmware import pbm
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from oslo_vmware import vim
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from oslo_vmware import vim_util
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from nova import exception
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from nova.i18n import _, _LI, _LW
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from nova.virt import driver
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from nova.virt.vmwareapi import constants
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from nova.virt.vmwareapi import error_util
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from nova.virt.vmwareapi import host
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from nova.virt.vmwareapi import vm_util
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from nova.virt.vmwareapi import vmops
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from nova.virt.vmwareapi import volumeops
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LOG = logging.getLogger(__name__)
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vmwareapi_opts = [
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cfg.StrOpt('host_ip',
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help='Hostname or IP address for connection to VMware VC '
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'host.'),
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cfg.IntOpt('host_port',
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default=443,
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help='Port for connection to VMware VC host.'),
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cfg.StrOpt('host_username',
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help='Username for connection to VMware VC host.'),
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cfg.StrOpt('host_password',
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help='Password for connection to VMware VC host.',
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secret=True),
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cfg.MultiStrOpt('cluster_name',
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help='Name of a VMware Cluster ComputeResource.'),
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cfg.StrOpt('datastore_regex',
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help='Regex to match the name of a datastore.'),
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cfg.FloatOpt('task_poll_interval',
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default=0.5,
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help='The interval used for polling of remote tasks.'),
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cfg.IntOpt('api_retry_count',
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default=10,
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help='The number of times we retry on failures, e.g., '
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'socket error, etc.'),
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cfg.IntOpt('vnc_port',
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default=5900,
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help='VNC starting port'),
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cfg.IntOpt('vnc_port_total',
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default=10000,
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help='Total number of VNC ports'),
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cfg.BoolOpt('use_linked_clone',
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default=True,
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help='Whether to use linked clone'),
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cfg.StrOpt('wsdl_location',
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help='Optional VIM Service WSDL Location '
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'e.g http://<server>/vimService.wsdl. '
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'Optional over-ride to default location for bug '
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'work-arounds')
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]
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spbm_opts = [
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cfg.BoolOpt('pbm_enabled',
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default=False,
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help='The PBM status.'),
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cfg.StrOpt('pbm_wsdl_location',
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help='PBM service WSDL file location URL. '
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'e.g. file:///opt/SDK/spbm/wsdl/pbmService.wsdl '
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'Not setting this will disable storage policy based '
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'placement of instances.'),
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cfg.StrOpt('pbm_default_policy',
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help='The PBM default policy. If pbm_wsdl_location is set and '
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'there is no defined storage policy for the specific '
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'request then this policy will be used.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(vmwareapi_opts, 'vmware')
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CONF.register_opts(spbm_opts, 'vmware')
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TIME_BETWEEN_API_CALL_RETRIES = 1.0
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class VMwareVCDriver(driver.ComputeDriver):
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"""The VC host connection object."""
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capabilities = {
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"has_imagecache": True,
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"supports_recreate": False,
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}
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# The vCenter driver includes API that acts on ESX hosts or groups
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# of ESX hosts in clusters or non-cluster logical-groupings.
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#
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# vCenter is not a hypervisor itself, it works with multiple
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# hypervisor host machines and their guests. This fact can
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# subtly alter how vSphere and OpenStack interoperate.
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def __init__(self, virtapi, scheme="https"):
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super(VMwareVCDriver, self).__init__(virtapi)
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if (CONF.vmware.host_ip is None or
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CONF.vmware.host_username is None or
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CONF.vmware.host_password is None):
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raise Exception(_("Must specify host_ip, host_username and "
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"host_password to use vmwareapi.VMwareVCDriver"))
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self._datastore_regex = None
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if CONF.vmware.datastore_regex:
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try:
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self._datastore_regex = re.compile(CONF.vmware.datastore_regex)
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except re.error:
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raise exception.InvalidInput(reason=
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_("Invalid Regular Expression %s")
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% CONF.vmware.datastore_regex)
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self._session = VMwareAPISession(scheme=scheme)
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# Update the PBM location if necessary
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if CONF.vmware.pbm_enabled:
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self._update_pbm_location()
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self._validate_configuration()
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# Get the list of clusters to be used
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self._cluster_names = CONF.vmware.cluster_name
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self.dict_mors = vm_util.get_all_cluster_refs_by_name(self._session,
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self._cluster_names)
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if not self.dict_mors:
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raise exception.NotFound(_("All clusters specified %s were not"
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" found in the vCenter")
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% self._cluster_names)
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# Check if there are any clusters that were specified in the nova.conf
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# but are not in the vCenter, for missing clusters log a warning.
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clusters_found = [v.get('name') for k, v in self.dict_mors.iteritems()]
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missing_clusters = set(self._cluster_names) - set(clusters_found)
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if missing_clusters:
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LOG.warning(_LW("The following clusters could not be found in the "
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"vCenter %s"), list(missing_clusters))
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# The _resources is used to maintain the vmops, volumeops and vcstate
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# objects per cluster
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self._resources = {}
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self._resource_keys = set()
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self._virtapi = virtapi
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self._update_resources()
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# The following initialization is necessary since the base class does
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# not use VC state.
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first_cluster = self._resources.keys()[0]
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self._vmops = self._resources.get(first_cluster).get('vmops')
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self._volumeops = self._resources.get(first_cluster).get('volumeops')
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self._vc_state = self._resources.get(first_cluster).get('vcstate')
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# Register the OpenStack extension
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self._register_openstack_extension()
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@property
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def need_legacy_block_device_info(self):
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return False
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def _update_pbm_location(self):
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if CONF.vmware.pbm_wsdl_location:
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pbm_wsdl_loc = CONF.vmware.pbm_wsdl_location
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else:
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version = vim_util.get_vc_version(self._session)
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pbm_wsdl_loc = pbm.get_pbm_wsdl_location(version)
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self._session.pbm_wsdl_loc_set(pbm_wsdl_loc)
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def _validate_configuration(self):
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if CONF.vmware.use_linked_clone is None:
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raise vexc.UseLinkedCloneConfigurationFault()
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if CONF.vmware.pbm_enabled:
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if not CONF.vmware.pbm_default_policy:
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raise error_util.PbmDefaultPolicyUnspecified()
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if not pbm.get_profile_id_by_name(
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self._session,
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CONF.vmware.pbm_default_policy):
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raise error_util.PbmDefaultPolicyDoesNotExist()
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if CONF.vmware.datastore_regex:
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LOG.warning(_LW(
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"datastore_regex is ignored when PBM is enabled"))
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self._datastore_regex = None
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def init_host(self, host):
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vim = self._session.vim
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if vim is None:
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self._session._create_session()
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def cleanup_host(self, host):
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self._session.logout()
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def _register_openstack_extension(self):
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# Register an 'OpenStack' extension in vCenter
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LOG.debug('Registering extension %s with vCenter',
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constants.EXTENSION_KEY)
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os_extension = self._session._call_method(vim_util, 'find_extension',
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constants.EXTENSION_KEY)
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if os_extension is None:
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LOG.debug('Extension does not exist. Registering type %s.',
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constants.EXTENSION_TYPE_INSTANCE)
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self._session._call_method(vim_util, 'register_extension',
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constants.EXTENSION_KEY,
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constants.EXTENSION_TYPE_INSTANCE)
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def cleanup(self, context, instance, network_info, block_device_info=None,
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destroy_disks=True, migrate_data=None, destroy_vifs=True):
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"""Cleanup after instance being destroyed by Hypervisor."""
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pass
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def resume_state_on_host_boot(self, context, instance, network_info,
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block_device_info=None):
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"""resume guest state when a host is booted."""
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# Check if the instance is running already and avoid doing
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# anything if it is.
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state = vm_util.get_vm_state(self._session, instance)
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ignored_states = ['poweredon', 'suspended']
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if state.lower() in ignored_states:
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return
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# Instance is not up and could be in an unknown state.
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# Be as absolute as possible about getting it back into
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# a known and running state.
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self.reboot(context, instance, network_info, 'hard',
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block_device_info)
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def list_instance_uuids(self):
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"""List VM instance UUIDs."""
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return self._vmops.list_instances()
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def list_instances(self):
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"""List VM instances from all nodes."""
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instances = []
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nodes = self.get_available_nodes()
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for node in nodes:
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vmops = self._get_vmops_for_compute_node(node)
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instances.extend(vmops.list_instances())
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return instances
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def migrate_disk_and_power_off(self, context, instance, dest,
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flavor, network_info,
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block_device_info=None,
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timeout=0, retry_interval=0):
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"""Transfers the disk of a running instance in multiple phases, turning
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off the instance before the end.
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"""
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# TODO(PhilDay): Add support for timeout (clean shutdown)
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return self._vmops.migrate_disk_and_power_off(context, instance,
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dest, flavor)
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def confirm_migration(self, migration, instance, network_info):
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"""Confirms a resize, destroying the source VM."""
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self._vmops.confirm_migration(migration, instance, network_info)
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def finish_revert_migration(self, context, instance, network_info,
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block_device_info=None, power_on=True):
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"""Finish reverting a resize, powering back on the instance."""
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self._vmops.finish_revert_migration(context, instance, network_info,
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block_device_info, power_on)
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def finish_migration(self, context, migration, instance, disk_info,
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network_info, image_meta, resize_instance,
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block_device_info=None, power_on=True):
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"""Completes a resize, turning on the migrated instance."""
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self._vmops.finish_migration(context, migration, instance, disk_info,
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network_info, image_meta, resize_instance,
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block_device_info, power_on)
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def live_migration(self, context, instance, dest,
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post_method, recover_method, block_migration=False,
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migrate_data=None):
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"""Live migration of an instance to another host."""
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self._vmops.live_migration(context, instance, dest,
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post_method, recover_method,
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block_migration)
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def rollback_live_migration_at_destination(self, context, instance,
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network_info,
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block_device_info,
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destroy_disks=True,
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migrate_data=None):
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"""Clean up destination node after a failed live migration."""
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self.destroy(context, instance, network_info, block_device_info)
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def get_instance_disk_info(self, instance, block_device_info=None):
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pass
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def get_vnc_console(self, context, instance):
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"""Return link to instance's VNC console using vCenter logic."""
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# vCenter does not actually run the VNC service
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# itself. You must talk to the VNC host underneath vCenter.
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return self._vmops.get_vnc_console(instance)
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def _update_resources(self):
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"""This method creates a dictionary of VMOps, VolumeOps and VCState.
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The VMwareVMOps, VMwareVolumeOps and VCState object is for each
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cluster/rp. The dictionary is of the form
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{
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domain-1000 : {'vmops': vmops_obj,
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'volumeops': volumeops_obj,
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'vcstate': vcstate_obj,
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'name': MyCluster},
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resgroup-1000 : {'vmops': vmops_obj,
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'volumeops': volumeops_obj,
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'vcstate': vcstate_obj,
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'name': MyRP},
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}
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"""
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added_nodes = set(self.dict_mors.keys()) - set(self._resource_keys)
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for node in added_nodes:
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_volumeops = volumeops.VMwareVolumeOps(self._session,
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self.dict_mors[node]['cluster_mor'])
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_vmops = vmops.VMwareVMOps(self._session, self._virtapi,
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_volumeops,
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self.dict_mors[node]['cluster_mor'],
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datastore_regex=self._datastore_regex)
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name = self.dict_mors.get(node)['name']
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nodename = self._create_nodename(node, name)
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_vc_state = host.VCState(self._session, nodename,
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self.dict_mors.get(node)['cluster_mor'],
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self._datastore_regex)
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self._resources[nodename] = {'vmops': _vmops,
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'volumeops': _volumeops,
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'vcstate': _vc_state,
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'name': name,
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}
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self._resource_keys.add(node)
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deleted_nodes = (set(self._resource_keys) -
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set(self.dict_mors.keys()))
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for node in deleted_nodes:
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name = self.dict_mors.get(node)['name']
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nodename = self._create_nodename(node, name)
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del self._resources[nodename]
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self._resource_keys.discard(node)
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def _create_nodename(self, mo_id, display_name):
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"""Creates the name that is stored in hypervisor_hostname column.
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The name will be of the form similar to
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domain-1000(MyCluster)
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resgroup-1000(MyResourcePool)
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"""
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return mo_id + '(' + display_name + ')'
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def _get_resource_for_node(self, nodename):
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"""Gets the resource information for the specific node."""
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resource = self._resources.get(nodename)
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if not resource:
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msg = _("The resource %s does not exist") % nodename
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raise exception.NotFound(msg)
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return resource
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def _get_vmops_for_compute_node(self, nodename):
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"""Retrieve vmops object from mo_id stored in the node name.
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Node name is of the form domain-1000(MyCluster)
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"""
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resource = self._get_resource_for_node(nodename)
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return resource['vmops']
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def _get_volumeops_for_compute_node(self, nodename):
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"""Retrieve vmops object from mo_id stored in the node name.
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Node name is of the form domain-1000(MyCluster)
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"""
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resource = self._get_resource_for_node(nodename)
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return resource['volumeops']
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def _get_vc_state_for_compute_node(self, nodename):
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"""Retrieve VCState object from mo_id stored in the node name.
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Node name is of the form domain-1000(MyCluster)
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"""
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resource = self._get_resource_for_node(nodename)
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return resource['vcstate']
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def _get_available_resources(self, host_stats):
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return {'vcpus': host_stats['vcpus'],
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'memory_mb': host_stats['host_memory_total'],
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'local_gb': host_stats['disk_total'],
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'vcpus_used': 0,
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'memory_mb_used': host_stats['host_memory_total'] -
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host_stats['host_memory_free'],
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'local_gb_used': host_stats['disk_used'],
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'hypervisor_type': host_stats['hypervisor_type'],
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'hypervisor_version': host_stats['hypervisor_version'],
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'hypervisor_hostname': host_stats['hypervisor_hostname'],
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# The VMWare driver manages multiple hosts, so there are
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# likely many different CPU models in use. As such it is
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# impossible to provide any meaningful info on the CPU
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# model of the "host"
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'cpu_info': None,
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'supported_instances': jsonutils.dumps(
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host_stats['supported_instances']),
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'numa_topology': None,
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}
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def get_available_resource(self, nodename):
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"""Retrieve resource info.
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This method is called when nova-compute launches, and
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as part of a periodic task.
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:returns: dictionary describing resources
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"""
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stats_dict = {}
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vc_state = self._get_vc_state_for_compute_node(nodename)
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if vc_state:
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host_stats = vc_state.get_host_stats(refresh=True)
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# Updating host information
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stats_dict = self._get_available_resources(host_stats)
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else:
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LOG.info(_LI("Invalid cluster or resource pool"
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" name : %s"), nodename)
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return stats_dict
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def get_available_nodes(self, refresh=False):
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"""Returns nodenames of all nodes managed by the compute service.
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This method is for multi compute-nodes support. If a driver supports
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multi compute-nodes, this method returns a list of nodenames managed
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by the service. Otherwise, this method should return
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[hypervisor_hostname].
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"""
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self.dict_mors = vm_util.get_all_cluster_refs_by_name(
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self._session,
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CONF.vmware.cluster_name)
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node_list = []
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self._update_resources()
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for node in self.dict_mors.keys():
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nodename = self._create_nodename(node,
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self.dict_mors.get(node)['name'])
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node_list.append(nodename)
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LOG.debug("The available nodes are: %s", node_list)
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return node_list
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def spawn(self, context, instance, image_meta, injected_files,
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admin_password, network_info=None, block_device_info=None,
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flavor=None):
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"""Create VM instance."""
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_vmops = self._get_vmops_for_compute_node(instance.node)
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_vmops.spawn(context, instance, image_meta, injected_files,
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admin_password, network_info, block_device_info,
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flavor=flavor)
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def attach_volume(self, context, connection_info, instance, mountpoint,
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disk_bus=None, device_type=None, encryption=None):
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"""Attach volume storage to VM instance."""
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_volumeops = self._get_volumeops_for_compute_node(instance.node)
|
|
return _volumeops.attach_volume(connection_info,
|
|
instance)
|
|
|
|
def detach_volume(self, connection_info, instance, mountpoint,
|
|
encryption=None):
|
|
"""Detach volume storage to VM instance."""
|
|
_volumeops = self._get_volumeops_for_compute_node(instance.node)
|
|
return _volumeops.detach_volume(connection_info,
|
|
instance)
|
|
|
|
def get_volume_connector(self, instance):
|
|
"""Return volume connector information."""
|
|
return self._volumeops.get_volume_connector(instance)
|
|
|
|
def get_host_ip_addr(self):
|
|
"""Returns the IP address of the vCenter host."""
|
|
return CONF.vmware.host_ip
|
|
|
|
def snapshot(self, context, instance, image_id, update_task_state):
|
|
"""Create snapshot from a running VM instance."""
|
|
self._vmops.snapshot(context, instance, image_id, update_task_state)
|
|
|
|
def reboot(self, context, instance, network_info, reboot_type,
|
|
block_device_info=None, bad_volumes_callback=None):
|
|
"""Reboot VM instance."""
|
|
self._vmops.reboot(instance, network_info, reboot_type)
|
|
|
|
def destroy(self, context, instance, network_info, block_device_info=None,
|
|
destroy_disks=True, migrate_data=None):
|
|
"""Destroy VM instance."""
|
|
|
|
# Destroy gets triggered when Resource Claim in resource_tracker
|
|
# is not successful. When resource claim is not successful,
|
|
# node is not set in instance. Perform destroy only if node is set
|
|
if not instance.node:
|
|
return
|
|
|
|
self._vmops.destroy(instance, destroy_disks)
|
|
|
|
def pause(self, instance):
|
|
"""Pause VM instance."""
|
|
self._vmops.pause(instance)
|
|
|
|
def unpause(self, instance):
|
|
"""Unpause paused VM instance."""
|
|
self._vmops.unpause(instance)
|
|
|
|
def suspend(self, context, instance):
|
|
"""Suspend the specified instance."""
|
|
self._vmops.suspend(instance)
|
|
|
|
def resume(self, context, instance, network_info, block_device_info=None):
|
|
"""Resume the suspended VM instance."""
|
|
self._vmops.resume(instance)
|
|
|
|
def rescue(self, context, instance, network_info, image_meta,
|
|
rescue_password):
|
|
"""Rescue the specified instance."""
|
|
self._vmops.rescue(context, instance, network_info, image_meta)
|
|
|
|
def unrescue(self, instance, network_info):
|
|
"""Unrescue the specified instance."""
|
|
self._vmops.unrescue(instance)
|
|
|
|
def power_off(self, instance, timeout=0, retry_interval=0):
|
|
"""Power off the specified instance."""
|
|
# TODO(PhilDay): Add support for timeout (clean shutdown)
|
|
self._vmops.power_off(instance)
|
|
|
|
def power_on(self, context, instance, network_info,
|
|
block_device_info=None):
|
|
"""Power on the specified instance."""
|
|
self._vmops.power_on(instance)
|
|
|
|
def poll_rebooting_instances(self, timeout, instances):
|
|
"""Poll for rebooting instances."""
|
|
self._vmops.poll_rebooting_instances(timeout, instances)
|
|
|
|
def get_info(self, instance):
|
|
"""Return info about the VM instance."""
|
|
return self._vmops.get_info(instance)
|
|
|
|
def get_diagnostics(self, instance):
|
|
"""Return data about VM diagnostics."""
|
|
return self._vmops.get_diagnostics(instance)
|
|
|
|
def get_instance_diagnostics(self, instance):
|
|
"""Return data about VM diagnostics."""
|
|
return self._vmops.get_instance_diagnostics(instance)
|
|
|
|
def host_power_action(self, action):
|
|
"""Host operations not supported by VC driver.
|
|
|
|
This needs to override the ESX driver implementation.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def host_maintenance_mode(self, host, mode):
|
|
"""Host operations not supported by VC driver.
|
|
|
|
This needs to override the ESX driver implementation.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def set_host_enabled(self, enabled):
|
|
"""Host operations not supported by VC driver.
|
|
|
|
This needs to override the ESX driver implementation.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def get_host_uptime(self):
|
|
"""Host uptime operation not supported by VC driver."""
|
|
|
|
msg = _("Multiple hosts may be managed by the VMWare "
|
|
"vCenter driver; therefore we do not return "
|
|
"uptime for just one host.")
|
|
raise NotImplementedError(msg)
|
|
|
|
def inject_network_info(self, instance, nw_info):
|
|
"""inject network info for specified instance."""
|
|
self._vmops.inject_network_info(instance, nw_info)
|
|
|
|
def manage_image_cache(self, context, all_instances):
|
|
"""Manage the local cache of images."""
|
|
|
|
# Running instances per cluster
|
|
cluster_instances = {}
|
|
for instance in all_instances:
|
|
instances = cluster_instances.get(instance.node)
|
|
if instances:
|
|
instances.append(instance)
|
|
else:
|
|
instances = [instance]
|
|
cluster_instances[instance.node] = instances
|
|
|
|
# Invoke the image aging per cluster
|
|
for resource in self._resources.keys():
|
|
instances = cluster_instances.get(resource, [])
|
|
_vmops = self._get_vmops_for_compute_node(resource)
|
|
_vmops.manage_image_cache(context, instances)
|
|
|
|
def instance_exists(self, instance):
|
|
"""Efficient override of base instance_exists method."""
|
|
return self._vmops.instance_exists(instance)
|
|
|
|
def attach_interface(self, instance, image_meta, vif):
|
|
"""Attach an interface to the instance."""
|
|
self._vmops.attach_interface(instance, image_meta, vif)
|
|
|
|
def detach_interface(self, instance, vif):
|
|
"""Detach an interface from the instance."""
|
|
self._vmops.detach_interface(instance, vif)
|
|
|
|
|
|
class VMwareAPISession(api.VMwareAPISession):
|
|
"""Sets up a session with the VC/ESX host and handles all
|
|
the calls made to the host.
|
|
"""
|
|
def __init__(self, host_ip=CONF.vmware.host_ip,
|
|
host_port=CONF.vmware.host_port,
|
|
username=CONF.vmware.host_username,
|
|
password=CONF.vmware.host_password,
|
|
retry_count=CONF.vmware.api_retry_count,
|
|
scheme="https"):
|
|
super(VMwareAPISession, self).__init__(
|
|
host=host_ip,
|
|
port=host_port,
|
|
server_username=username,
|
|
server_password=password,
|
|
api_retry_count=retry_count,
|
|
task_poll_interval=CONF.vmware.task_poll_interval,
|
|
scheme=scheme,
|
|
create_session=True,
|
|
wsdl_loc=CONF.vmware.wsdl_location
|
|
)
|
|
|
|
def _is_vim_object(self, module):
|
|
"""Check if the module is a VIM Object instance."""
|
|
return isinstance(module, vim.Vim)
|
|
|
|
def _call_method(self, module, method, *args, **kwargs):
|
|
"""Calls a method within the module specified with
|
|
args provided.
|
|
"""
|
|
if not self._is_vim_object(module):
|
|
return self.invoke_api(module, method, self.vim, *args, **kwargs)
|
|
else:
|
|
return self.invoke_api(module, method, *args, **kwargs)
|
|
|
|
def _wait_for_task(self, task_ref):
|
|
"""Return a Deferred that will give the result of the given task.
|
|
The task is polled until it completes.
|
|
"""
|
|
return self.wait_for_task(task_ref)
|