e4d5dad6a1
Add L3 HA base classes on the plugin side. A new admin-only ha attribute is added to the API router resource. Conversion from or to HA router is possible. Each tenant gets a single network used for HA traffic. The tenant_id for that network is set to '' so that it isn't visible via the CLI or GUI. A new table is added to map a tenant to its HA network. Specific HA attributes are added to the extra router attributes table. Finally, each HA router gets a port on the HA network, per l3 agent it is scheduled on. A new table is added to track these bindings. A new table is added in order to track VRID allocations. DVR integration is not expected to work. Any issues will be reported as bugs and handled after the feature merges. Migrating a router to HA or from HA works server side but is not expected to work (Yet) agent side. This will be dealt with as a bug in the future. DocImpact Partially-implements: blueprint l3-high-availability Change-Id: I9d935cf5e0c231e8cb7af5f61b9a9fc552c3521e Co-Authored-By: Assaf Muller <amuller@redhat.com>
92 lines
3.0 KiB
Python
92 lines
3.0 KiB
Python
# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
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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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from neutron.api import extensions
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from neutron.api.v2 import attributes
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from neutron.common import constants
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from neutron.common import exceptions
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HA_INFO = 'ha'
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EXTENDED_ATTRIBUTES_2_0 = {
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'routers': {
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HA_INFO: {'allow_post': True, 'allow_put': True,
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'default': attributes.ATTR_NOT_SPECIFIED, 'is_visible': True,
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'enforce_policy': True,
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'convert_to': attributes.convert_to_boolean_if_not_none}
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}
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}
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class DistributedHARouterNotSupported(NotImplementedError):
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message = _("Currenly distributed HA routers are "
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"not supported.")
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class MaxVRIDAllocationTriesReached(exceptions.NeutronException):
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message = _("Failed to allocate a VRID in the network %(network_id)s "
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"for the router %(router_id)s after %(max_tries)s tries.")
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class NoVRIDAvailable(exceptions.Conflict):
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message = _("No more Virtual Router Identifier (VRID) available when "
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"creating router %(router_id)s. The limit of number "
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"of HA Routers per tenant is 254.")
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class HANetworkCIDRNotValid(exceptions.NeutronException):
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message = _("The HA Network CIDR specified in the configuration file "
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"isn't valid; %(cidr)s.")
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class HANotEnoughAvailableAgents(exceptions.NeutronException):
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message = _("Not enough l3 agents available to ensure HA. Minimum "
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"required %(min_agents)s, available %(num_agents)s.")
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class HAMinimumAgentsNumberNotValid(exceptions.NeutronException):
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message = (_("min_l3_agents_per_router config parameter is not valid. "
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"It has to be equal to or more than %s for HA.") %
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constants.MINIMUM_AGENTS_FOR_HA)
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class L3_ext_ha_mode(extensions.ExtensionDescriptor):
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"""Extension class supporting virtual router in HA mode."""
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@classmethod
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def get_name(cls):
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return "HA Router extension"
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@classmethod
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def get_alias(cls):
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return constants.L3_HA_MODE_EXT_ALIAS
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@classmethod
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def get_description(cls):
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return "Add HA capability to routers."
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@classmethod
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def get_namespace(cls):
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return ""
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@classmethod
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def get_updated(cls):
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return "2014-04-26T00:00:00-00:00"
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def get_extended_resources(self, version):
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if version == "2.0":
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return EXTENDED_ATTRIBUTES_2_0
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else:
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return {}
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