338d47e058
The code adds support for host_groups. This allows the plugin
to place the edge VMs host_groups to provide HA.
In order to get the fire cell anti affinity, we do the following:
1. Admin out of band: create two ‘Virtual machine to Hosts’ rules.
These are listed in the host_groups parameter(s)
a. HOST-GROUP-A – all hosts in fire cell A
b. HOST-GROUP-B – all hosts in fire cell B
2. The plugin does the following:
a. Create 2 VM groups (each one will be a placeholder for the edges).
The VM group name is of the following format:
'neutron-group-%s-%s' % (edge_id, index)
b. Create 2 VM/Host rules. This will contain the VM group from above
The Host group name is of the following format:
'neutron-rule-%s-%s' % (edge_id, index)
c. Plugin deletes above when the edges are deleted.
An admin utility method has been added that configures the host groups:
nsxadmin -o nsx-update -r edges -p edge-id=edge-55 --property hostgroup=True|False
Depends-On: I494a1d19341f30f22803a3fe6baf020a67ad6b08
Change-Id: I9bf3c280c37c02081c11ac8abacc424db6cac09f
261 lines
11 KiB
Python
261 lines
11 KiB
Python
# Copyright 2016 VMware, Inc.
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# All Rights Reserved
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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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from oslo_config import cfg
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from vmware_nsx._i18n import _
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from vmware_nsx.common import config
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from vmware_nsx.common import exceptions as nsx_exc
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DEFAULT_NAME = 'default'
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class ConfiguredAvailabilityZone(object):
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def __init__(self, config_line):
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if config_line and ':' in config_line:
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# Older configuration - each line contains all the relevant
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# values for one availability zones, separated by ':'
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values = config_line.split(':')
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if len(values) < 4 or len(values) > 5:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="availability_zones",
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opt_value=config_line,
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reason=_("Expected 4 or 5 values per zone"))
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self.name = values[0]
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# field name size in the DB is 36
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if len(self.name) > 36:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="availability_zones",
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opt_value=config_line,
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reason=_("Maximum name length is 36"))
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self.resource_pool = values[1]
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self.datastore_id = values[2]
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# validate the edge_ha
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if values[3].lower() == "true":
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self.edge_ha = True
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elif values[3].lower() == "false":
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self.edge_ha = False
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else:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="availability_zones",
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opt_value=config_line,
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reason=_("Expected the 4th value to be true/false"))
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# HA datastore id is relevant only with edge_ha
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if not self.edge_ha and len(values) == 5:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="availability_zones",
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opt_value=config_line,
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reason=_("Expected HA datastore ID only when edge_ha is "
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"enabled"))
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self.ha_datastore_id = values[4] if len(values) == 5 else None
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# Some parameters are not supported in this format.
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# using the global ones instead.
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self.ha_placement_random = cfg.CONF.nsxv.ha_placement_random
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self.backup_edge_pool = cfg.CONF.nsxv.backup_edge_pool
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self.external_network = cfg.CONF.nsxv.external_network
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self.vdn_scope_id = cfg.CONF.nsxv.vdn_scope_id
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self.dvs_id = cfg.CONF.nsxv.dvs_id
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self.edge_host_groups = cfg.CONF.nsxv.edge_host_groups
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# No support for metadata per az
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self.az_metadata_support = False
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self.mgt_net_moid = None
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self.mgt_net_proxy_ips = []
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self.mgt_net_proxy_netmask = None
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self.mgt_net_default_gateway = None
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elif config_line:
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# Newer configuration - the name of the availability zone can be
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# used to get the rest of the configuration for this AZ
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self.name = config_line
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# field name size in the DB is 36
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if len(self.name) > 36:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="availability_zones",
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opt_value=config_line,
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reason=_("Maximum name length is 36"))
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az_info = config.get_nsxv_az_opts(self.name)
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self.resource_pool = az_info.get('resource_pool_id')
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if not self.resource_pool:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="resource_pool_id",
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opt_value='None',
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reason=(_("resource_pool_id for availability zone %s "
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"must be defined") % self.name))
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self.datastore_id = az_info.get('datastore_id')
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if not self.datastore_id:
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="datastore_id",
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opt_value='None',
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reason=(_("datastore_id for availability zone %s "
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"must be defined") % self.name))
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self.edge_ha = az_info.get('edge_ha', False)
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# The HA datastore can be empty
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self.ha_datastore_id = (az_info.get('ha_datastore_id')
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if self.edge_ha else None)
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# The optional parameters will get the global values if not
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# defined for this AZ
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self.ha_placement_random = az_info.get('ha_placement_random')
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if self.ha_placement_random is None:
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self.ha_placement_random = (
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cfg.CONF.nsxv.ha_placement_random)
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self.backup_edge_pool = az_info.get('backup_edge_pool', [])
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if not self.backup_edge_pool:
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self.backup_edge_pool = cfg.CONF.nsxv.backup_edge_pool
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self.external_network = az_info.get('external_network')
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if not self.external_network:
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self.external_network = cfg.CONF.nsxv.external_network
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self.vdn_scope_id = az_info.get('vdn_scope_id')
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if not self.vdn_scope_id:
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self.vdn_scope_id = cfg.CONF.nsxv.vdn_scope_id
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self.dvs_id = az_info.get('dvs_id')
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if not self.dvs_id:
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self.dvs_id = cfg.CONF.nsxv.dvs_id
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self.edge_host_groups = az_info.get('edge_host_groups', [])
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if not self.edge_host_groups:
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self.edge_host_groups = cfg.CONF.nsxv.edge_host_groups
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# Support for metadata per az only if configured, and different
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# from the global one
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self.mgt_net_proxy_ips = az_info.get('mgt_net_proxy_ips')
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if self.mgt_net_proxy_ips:
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# make sure there are no over lapping ips with the
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# global configuration
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if (set(self.mgt_net_proxy_ips) &
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set(cfg.CONF.nsxv.mgt_net_proxy_ips)):
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raise nsx_exc.NsxInvalidConfiguration(
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opt_name="mgt_net_proxy_ips",
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opt_value='None',
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reason=(_("mgt_net_proxy_ips for availability zone "
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"%s must be different from global one") %
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self.name))
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self.az_metadata_support = True
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self.mgt_net_moid = az_info.get('mgt_net_moid')
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if not self.mgt_net_moid:
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self.mgt_net_moid = cfg.CONF.nsxv.mgt_net_moid
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self.mgt_net_proxy_netmask = az_info.get(
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'mgt_net_proxy_netmask')
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if not self.mgt_net_proxy_netmask:
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self.mgt_net_proxy_netmask = (
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cfg.CONF.nsxv.mgt_net_proxy_netmask)
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self.mgt_net_default_gateway = az_info.get(
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'mgt_net_default_gateway')
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if not self.mgt_net_default_gateway:
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self.mgt_net_default_gateway = (
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cfg.CONF.nsxv.mgt_net_default_gateway)
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else:
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self.az_metadata_support = False
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self.mgt_net_moid = None
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self.mgt_net_proxy_ips = []
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self.mgt_net_proxy_netmask = None
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self.mgt_net_default_gateway = None
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else:
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# use the default configuration
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self.name = DEFAULT_NAME
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self.resource_pool = cfg.CONF.nsxv.resource_pool_id
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self.datastore_id = cfg.CONF.nsxv.datastore_id
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self.edge_ha = cfg.CONF.nsxv.edge_ha
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self.ha_datastore_id = cfg.CONF.nsxv.ha_datastore_id
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self.ha_placement_random = cfg.CONF.nsxv.ha_placement_random
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self.backup_edge_pool = cfg.CONF.nsxv.backup_edge_pool
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self.az_metadata_support = True
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self.mgt_net_moid = cfg.CONF.nsxv.mgt_net_moid
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self.mgt_net_proxy_ips = cfg.CONF.nsxv.mgt_net_proxy_ips
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self.mgt_net_proxy_netmask = cfg.CONF.nsxv.mgt_net_proxy_netmask
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self.mgt_net_default_gateway = (
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cfg.CONF.nsxv.mgt_net_default_gateway)
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self.external_network = cfg.CONF.nsxv.external_network
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self.vdn_scope_id = cfg.CONF.nsxv.vdn_scope_id
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self.dvs_id = cfg.CONF.nsxv.dvs_id
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self.edge_host_groups = cfg.CONF.nsxv.edge_host_groups
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def is_default(self):
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return self.name == DEFAULT_NAME
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def supports_metadata(self):
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# Return True if this az has it's own metadata configuration
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# If False - it uses the global metadata (if defined)
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return self.az_metadata_support
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class ConfiguredAvailabilityZones(object):
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def __init__(self):
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self.availability_zones = {}
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# Add the configured availability zones
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for az in cfg.CONF.nsxv.availability_zones:
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obj = ConfiguredAvailabilityZone(az)
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self.availability_zones[obj.name] = obj
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# add a default entry
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obj = ConfiguredAvailabilityZone(None)
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self.availability_zones[obj.name] = obj
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def get_resources(self):
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"""Return a list of all the resources in all the availability zones
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"""
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resources = []
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for az in self.availability_zones.values():
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resources.append(az.resource_pool)
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resources.append(az.datastore_id)
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if az.ha_datastore_id:
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resources.append(az.ha_datastore_id)
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if az.mgt_net_moid:
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resources.append(az.mgt_net_moid)
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if az.external_network:
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resources.append(az.external_network)
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if az.vdn_scope_id:
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resources.append(az.vdn_scope_id)
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if az.mgt_net_moid:
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resources.append(az.mgt_net_moid)
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return resources
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def get_availability_zone(self, name):
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"""Return an availability zone object by its name
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"""
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if name in self.availability_zones.keys():
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return self.availability_zones[name]
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return self.get_default_availability_zone()
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def get_default_availability_zone(self):
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"""Return the default availability zone object
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"""
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return self.availability_zones[DEFAULT_NAME]
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def list_availability_zones(self):
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"""Return a list of availability zones names
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"""
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return self.availability_zones.keys()
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