openstack
/
neutron
Code Issues Proposed changes

Merge "Add L3 VRRP HA base classes"

This commit is contained in:
Jenkins 2014-09-12 13:12:30 +00:00 committed by Gerrit Code Review
parent 7c86ec9b73 5730d87c26
commit 01c0ecb49e
15 changed files with 1095 additions and 14 deletions
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16
etc/neutron.conf
View File

@ -172,6 +172,22 @@ lock_path = $state_path/lock
# =========== end of items for agent scheduler extension =====
# =========== items for l3 extension ==============
# Enable high availability for virtual routers.
# l3_ha = False
#
# Maximum number of l3 agents which a HA router will be scheduled on. If it
# is set to 0 the router will be scheduled on every agent.
# max_l3_agents_per_router = 3
#
# Minimum number of l3 agents which a HA router will be scheduled on. The
# default value is 2.
# min_l3_agents_per_router = 2
#
# CIDR of the administrative network if HA mode is enabled
# l3_ha_net_cidr = 169.254.192.0/18
# =========== end of items for l3 extension =======
# =========== WSGI parameters related to the API server ==============
# Number of separate worker processes to spawn. The default, 0, runs the
# worker thread in the current process. Greater than 0 launches that number of

3
etc/policy.json
View File

@ -58,13 +58,16 @@
"update_port:mac_learning_enabled": "rule:admin_or_network_owner",
"delete_port": "rule:admin_or_owner",
"get_router:ha": "rule:admin_only",
"create_router": "rule:regular_user",
"create_router:external_gateway_info:enable_snat": "rule:admin_only",
"create_router:distributed": "rule:admin_only",
"create_router:ha": "rule:admin_only",
"get_router": "rule:admin_or_owner",
"get_router:distributed": "rule:admin_only",
"update_router:external_gateway_info:enable_snat": "rule:admin_only",
"update_router:distributed": "rule:admin_only",
"update_router:ha": "rule:admin_only",
"delete_router": "rule:admin_or_owner",
"add_router_interface": "rule:admin_or_owner",

15
neutron/api/rpc/handlers/l3_rpc.py
View File

@ -38,7 +38,8 @@ class L3RpcCallback(n_rpc.RpcCallback):
# 1.1 Support update_floatingip_statuses
# 1.2 Added methods for DVR support
# 1.3 Added a method that returns the list of activated services
RPC_API_VERSION = '1.3'
# 1.4 Added L3 HA update_router_state
RPC_API_VERSION = '1.4'
@property
def plugin(self):
@ -104,6 +105,10 @@ class L3RpcCallback(n_rpc.RpcCallback):
for interface in router.get(constants.INTERFACE_KEY, []):
self._ensure_host_set_on_port(context, host,
interface, router['id'])
interface = router.get(constants.HA_INTERFACE_KEY)
if interface:
self._ensure_host_set_on_port(context, host, interface,
router['id'])
def _ensure_host_set_on_port(self, context, host, port, router_id=None):
if (port and
@ -224,3 +229,11 @@ class L3RpcCallback(n_rpc.RpcCallback):
'and on host %(host)s', {'snat_port_list': snat_port_list,
'host': host})
return snat_port_list
def update_router_state(self, context, **kwargs):
router_id = kwargs.get('router_id')
state = kwargs.get('state')
host = kwargs.get('host')
return self.l3plugin.update_router_state(context, router_id, state,
host=host)

9
neutron/common/constants.py
View File

@ -29,6 +29,7 @@ FLOATINGIP_STATUS_ACTIVE = 'ACTIVE'
FLOATINGIP_STATUS_DOWN = 'DOWN'
FLOATINGIP_STATUS_ERROR = 'ERROR'
DEVICE_OWNER_ROUTER_HA_INTF = "network:router_ha_interface"
DEVICE_OWNER_ROUTER_INTF = "network:router_interface"
DEVICE_OWNER_ROUTER_GW = "network:router_gateway"
DEVICE_OWNER_FLOATINGIP = "network:floatingip"
@ -42,10 +43,17 @@ DEVICE_ID_RESERVED_DHCP_PORT = "reserved_dhcp_port"
FLOATINGIP_KEY = '_floatingips'
INTERFACE_KEY = '_interfaces'
HA_INTERFACE_KEY = '_ha_interface'
HA_ROUTER_STATE_KEY = '_ha_state'
METERING_LABEL_KEY = '_metering_labels'
FLOATINGIP_AGENT_INTF_KEY = '_floatingip_agent_interfaces'
SNAT_ROUTER_INTF_KEY = '_snat_router_interfaces'
HA_NETWORK_NAME = 'HA network tenant %s'
HA_SUBNET_NAME = 'HA subnet tenant %s'
HA_PORT_NAME = 'HA port tenant %s'
MINIMUM_AGENTS_FOR_HA = 2
IPv4 = 'IPv4'
IPv6 = 'IPv6'
@ -101,6 +109,7 @@ L3_AGENT_SCHEDULER_EXT_ALIAS = 'l3_agent_scheduler'
DHCP_AGENT_SCHEDULER_EXT_ALIAS = 'dhcp_agent_scheduler'
LBAAS_AGENT_SCHEDULER_EXT_ALIAS = 'lbaas_agent_scheduler'
L3_DISTRIBUTED_EXT_ALIAS = 'dvr'
L3_HA_MODE_EXT_ALIAS = 'l3-ha'
# Protocol names and numbers for Security Groups/Firewalls
PROTO_NAME_TCP = 'tcp'

10
neutron/db/l3_agentschedulers_db.py
View File

@ -284,8 +284,14 @@ class L3AgentSchedulerDbMixin(l3agentscheduler.L3AgentSchedulerPluginBase,
RouterL3AgentBinding.router_id.in_(router_ids))
router_ids = [item[0] for item in query]
if router_ids:
return self.get_sync_data(context, router_ids=router_ids,
active=True)
if n_utils.is_extension_supported(self,
constants.L3_HA_MODE_EXT_ALIAS):
return self.get_ha_sync_data_for_host(context, host,
router_ids=router_ids,
active=True)
else:
return self.get_sync_data(context, router_ids=router_ids,
active=True)
else:
return []

5
neutron/db/l3_attrs_db.py
View File

@ -40,6 +40,11 @@ class RouterExtraAttributes(model_base.BASEV2):
service_router = sa.Column(sa.Boolean, default=False,
server_default=sa.sql.false(),
nullable=False)
ha = sa.Column(sa.Boolean, default=False,
server_default=sa.sql.false(),
nullable=False)
ha_vr_id = sa.Column(sa.Integer())
router = orm.relationship(
l3_db.Router,
backref=orm.backref("extra_attributes", lazy='joined',

6
neutron/db/l3_dvr_db.py
View File

@ -61,7 +61,7 @@ class L3_NAT_with_dvr_db_mixin(l3_db.L3_NAT_db_mixin,
def _create_router_db(self, context, router, tenant_id):
"""Create a router db object with dvr additions."""
router['distributed'] = _is_distributed_router(router)
router['distributed'] = is_distributed_router(router)
with context.session.begin(subtransactions=True):
router_db = super(
L3_NAT_with_dvr_db_mixin, self)._create_router_db(
@ -128,7 +128,7 @@ class L3_NAT_with_dvr_db_mixin(l3_db.L3_NAT_db_mixin,
router_is_uuid = isinstance(router, basestring)
if router_is_uuid:
router = self._get_router(context, router)
if _is_distributed_router(router):
if is_distributed_router(router):
return DEVICE_OWNER_DVR_INTERFACE
return super(L3_NAT_with_dvr_db_mixin,
self)._get_device_owner(context, router)
@ -534,7 +534,7 @@ class L3_NAT_with_dvr_db_mixin(l3_db.L3_NAT_db_mixin,
l3_port_check=False)
def _is_distributed_router(router):
def is_distributed_router(router):
"""Return True if router to be handled is distributed."""
try:
# See if router is a DB object first

459
neutron/db/l3_hamode_db.py Normal file
View File

@ -0,0 +1,459 @@
# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
import netaddr
from oslo.config import cfg
from oslo.db import exception as db_exc
import sqlalchemy as sa
from sqlalchemy import orm
from neutron.api.v2 import attributes
from neutron.common import constants
from neutron.db import agents_db
from neutron.db import l3_dvr_db
from neutron.db import model_base
from neutron.db import models_v2
from neutron.extensions import l3_ext_ha_mode as l3_ha
from neutron.openstack.common import excutils
from neutron.openstack.common.gettextutils import _LI
from neutron.openstack.common.gettextutils import _LW
from neutron.openstack.common import log as logging
VR_ID_RANGE = set(range(1, 255))
MAX_ALLOCATION_TRIES = 10
LOG = logging.getLogger(__name__)
L3_HA_OPTS = [
cfg.BoolOpt('l3_ha',
default=False,
help=_('Enable HA mode for virtual routers.')),
cfg.IntOpt('max_l3_agents_per_router',
default=3,
help=_('Maximum number of agents on which a router will be '
'scheduled.')),
cfg.IntOpt('min_l3_agents_per_router',
default=constants.MINIMUM_AGENTS_FOR_HA,
help=_('Minimum number of agents on which a router will be '
'scheduled.')),
cfg.StrOpt('l3_ha_net_cidr',
default='169.254.192.0/18',
help=_('Subnet used for the l3 HA admin network.')),
]
cfg.CONF.register_opts(L3_HA_OPTS)
class L3HARouterAgentPortBinding(model_base.BASEV2):
"""Represent agent binding state of a HA router port.
A HA Router has one HA port per agent on which it is spawned.
This binding table stores which port is used for a HA router by a
L3 agent.
"""
__tablename__ = 'ha_router_agent_port_bindings'
port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id',
ondelete='CASCADE'),
nullable=False, primary_key=True)
port = orm.relationship(models_v2.Port)
router_id = sa.Column(sa.String(36), sa.ForeignKey('routers.id',
ondelete='CASCADE'),
nullable=False)
l3_agent_id = sa.Column(sa.String(36),
sa.ForeignKey("agents.id",
ondelete='CASCADE'))
agent = orm.relationship(agents_db.Agent)
state = sa.Column(sa.Enum('active', 'standby', name='l3_ha_states'),
default='standby',
server_default='standby')
class L3HARouterNetwork(model_base.BASEV2):
"""Host HA network for a tenant.
One HA Network is used per tenant, all HA router ports are created
on this network.
"""
__tablename__ = 'ha_router_networks'
tenant_id = sa.Column(sa.String(255), primary_key=True,
nullable=False)
network_id = sa.Column(sa.String(36),
sa.ForeignKey('networks.id', ondelete="CASCADE"),
nullable=False, primary_key=True)
network = orm.relationship(models_v2.Network)
class L3HARouterVRIdAllocation(model_base.BASEV2):
"""VRID allocation per HA network.
Keep a track of the VRID allocations per HA network.
"""
__tablename__ = 'ha_router_vrid_allocations'
network_id = sa.Column(sa.String(36),
sa.ForeignKey('networks.id', ondelete="CASCADE"),
nullable=False, primary_key=True)
vr_id = sa.Column(sa.Integer(), nullable=False, primary_key=True)
class L3_HA_NAT_db_mixin(l3_dvr_db.L3_NAT_with_dvr_db_mixin):
"""Mixin class to add high availability capability to routers."""
extra_attributes = (
l3_dvr_db.L3_NAT_with_dvr_db_mixin.extra_attributes + [
{'name': 'ha', 'default': cfg.CONF.l3_ha},
{'name': 'ha_vr_id', 'default': 0}])
def _verify_configuration(self):
self.ha_cidr = cfg.CONF.l3_ha_net_cidr
try:
net = netaddr.IPNetwork(self.ha_cidr)
except netaddr.AddrFormatError:
raise l3_ha.HANetworkCIDRNotValid(cidr=self.ha_cidr)
if ('/' not in self.ha_cidr or net.network != net.ip):
raise l3_ha.HANetworkCIDRNotValid(cidr=self.ha_cidr)
if cfg.CONF.min_l3_agents_per_router < constants.MINIMUM_AGENTS_FOR_HA:
raise l3_ha.HAMinimumAgentsNumberNotValid()
def __init__(self):
self._verify_configuration()
super(L3_HA_NAT_db_mixin, self).__init__()
def get_ha_network(self, context, tenant_id):
return (context.session.query(L3HARouterNetwork).
filter(L3HARouterNetwork.tenant_id == tenant_id).
first())
def _get_allocated_vr_id(self, context, network_id):
with context.session.begin(subtransactions=True):
query = (context.session.query(L3HARouterVRIdAllocation).
filter(L3HARouterVRIdAllocation.network_id == network_id))
allocated_vr_ids = set(a.vr_id for a in query) - set([0])
return allocated_vr_ids
def _allocate_vr_id(self, context, network_id, router_id):
for count in range(MAX_ALLOCATION_TRIES):
try:
with context.session.begin(subtransactions=True):
allocated_vr_ids = self._get_allocated_vr_id(context,
network_id)
available_vr_ids = VR_ID_RANGE - allocated_vr_ids
if not available_vr_ids:
raise l3_ha.NoVRIDAvailable(router_id=router_id)
allocation = L3HARouterVRIdAllocation()
allocation.network_id = network_id
allocation.vr_id = available_vr_ids.pop()
context.session.add(allocation)
return allocation.vr_id
except db_exc.DBDuplicateEntry:
LOG.info(_LI("Attempt %(count)s to allocate a VRID in the "
"network %(network)s for the router %(router)s"),
{'count': count, 'network': network_id,
'router': router_id})
raise l3_ha.MaxVRIDAllocationTriesReached(
network_id=network_id, router_id=router_id,
max_tries=MAX_ALLOCATION_TRIES)
def _delete_vr_id_allocation(self, context, ha_network, vr_id):
with context.session.begin(subtransactions=True):
context.session.query(L3HARouterVRIdAllocation).filter_by(
network_id=ha_network.network_id,
vr_id=vr_id).delete()
def _set_vr_id(self, context, router, ha_network):
with context.session.begin(subtransactions=True):
router.extra_attributes.ha_vr_id = self._allocate_vr_id(
context, ha_network.network_id, router.id)
def _create_ha_subnet(self, context, network_id, tenant_id):
args = {'subnet':
{'network_id': network_id,
'tenant_id': '',
'name': constants.HA_SUBNET_NAME % tenant_id,
'ip_version': 4,
'cidr': cfg.CONF.l3_ha_net_cidr,
'enable_dhcp': False,
'host_routes': attributes.ATTR_NOT_SPECIFIED,
'dns_nameservers': attributes.ATTR_NOT_SPECIFIED,
'allocation_pools': attributes.ATTR_NOT_SPECIFIED,
'gateway_ip': None}}
return self._core_plugin.create_subnet(context, args)
def _create_ha_network_tenant_binding(self, context, tenant_id,
network_id):
with context.session.begin(subtransactions=True):
ha_network = L3HARouterNetwork(tenant_id=tenant_id,
network_id=network_id)
context.session.add(ha_network)
return ha_network
def _create_ha_network(self, context, tenant_id):
admin_ctx = context.elevated()
args = {'network':
{'name': constants.HA_NETWORK_NAME % tenant_id,
'tenant_id': '',
'shared': False,
'admin_state_up': True,
'status': constants.NET_STATUS_ACTIVE}}
network = self._core_plugin.create_network(context, args)
try:
ha_network = self._create_ha_network_tenant_binding(admin_ctx,
tenant_id,
network['id'])
except Exception:
with excutils.save_and_reraise_exception():
self._core_plugin.delete_network(admin_ctx, network['id'])
try:
self._create_ha_subnet(admin_ctx, network['id'], tenant_id)
except Exception:
with excutils.save_and_reraise_exception():
self._core_plugin.delete_network(admin_ctx, network['id'])
return ha_network
def get_number_of_agents_for_scheduling(self, context):
"""Return the number of agents on which the router will be scheduled.
Raises an exception if there are not enough agents available to honor
the min_agents config parameter. If the max_agents parameter is set to
0 all the agents will be used.
"""
min_agents = cfg.CONF.min_l3_agents_per_router
num_agents = len(self.get_l3_agents(context))
max_agents = cfg.CONF.max_l3_agents_per_router
if max_agents:
if max_agents > num_agents:
LOG.info(_LI("Number of available agents lower than "
"max_l3_agents_per_router. L3 agents "
"available: %s"), num_agents)
else:
num_agents = max_agents
if num_agents < min_agents:
raise l3_ha.HANotEnoughAvailableAgents(min_agents=min_agents,
num_agents=num_agents)
return num_agents
def _create_ha_port_binding(self, context, port_id, router_id):
with context.session.begin(subtransactions=True):
portbinding = L3HARouterAgentPortBinding(port_id=port_id,
router_id=router_id)
context.session.add(portbinding)
return portbinding
def add_ha_port(self, context, router_id, network_id, tenant_id):
port = self._core_plugin.create_port(context, {
'port':
{'tenant_id': '',
'network_id': network_id,
'fixed_ips': attributes.ATTR_NOT_SPECIFIED,
'mac_address': attributes.ATTR_NOT_SPECIFIED,
'admin_state_up': True,
'device_id': router_id,
'device_owner': constants.DEVICE_OWNER_ROUTER_HA_INTF,
'name': constants.HA_PORT_NAME % tenant_id}})
try:
return self._create_ha_port_binding(context, port['id'], router_id)
except Exception:
with excutils.save_and_reraise_exception():
self._core_plugin.delete_port(context, port['id'],
l3_port_check=False)
def _create_ha_interfaces(self, context, router, ha_network):
admin_ctx = context.elevated()
num_agents = self.get_number_of_agents_for_scheduling(context)
port_ids = []
try:
for index in range(num_agents):
binding = self.add_ha_port(admin_ctx, router.id,
ha_network.network['id'],
router.tenant_id)
port_ids.append(binding.port_id)
except Exception:
with excutils.save_and_reraise_exception():
for port_id in port_ids:
self._core_plugin.delete_port(admin_ctx, port_id,
l3_port_check=False)
def _delete_ha_interfaces(self, context, router_id):
admin_ctx = context.elevated()
device_filter = {'device_id': [router_id],
'device_owner':
[constants.DEVICE_OWNER_ROUTER_HA_INTF]}
ports = self._core_plugin.get_ports(admin_ctx, filters=device_filter)
for port in ports:
self._core_plugin.delete_port(admin_ctx, port['id'],
l3_port_check=False)
def _notify_ha_interfaces_updated(self, context, router_id):
self.l3_rpc_notifier.routers_updated(context, [router_id])
@classmethod
def _is_ha(cls, router):
ha = router.get('ha')
if not attributes.is_attr_set(ha):
ha = cfg.CONF.l3_ha
return ha
def _create_router_db(self, context, router, tenant_id):
router['ha'] = self._is_ha(router)
if router['ha'] and l3_dvr_db.is_distributed_router(router):
raise l3_ha.DistributedHARouterNotSupported()
with context.session.begin(subtransactions=True):
router_db = super(L3_HA_NAT_db_mixin, self)._create_router_db(
context, router, tenant_id)
if router['ha']:
try:
ha_network = self.get_ha_network(context,
router_db.tenant_id)
if not ha_network:
ha_network = self._create_ha_network(context,
router_db.tenant_id)
self._set_vr_id(context, router_db, ha_network)
self._create_ha_interfaces(context, router_db, ha_network)
self._notify_ha_interfaces_updated(context, router_db.id)
except Exception:
with excutils.save_and_reraise_exception():
self.delete_router(context, router_db.id)
return router_db
def _update_router_db(self, context, router_id, data, gw_info):
ha = data.pop('ha', None)
if ha and data.get('distributed'):
raise l3_ha.DistributedHARouterNotSupported()
with context.session.begin(subtransactions=True):
router_db = super(L3_HA_NAT_db_mixin, self)._update_router_db(
context, router_id, data, gw_info)
ha_not_changed = ha is None or ha == router_db.extra_attributes.ha
if ha_not_changed:
return router_db
ha_network = self.get_ha_network(context,
router_db.tenant_id)
router_db.extra_attributes.ha = ha
if not ha:
self._delete_vr_id_allocation(
context, ha_network, router_db.extra_attributes.ha_vr_id)
router_db.extra_attributes.ha_vr_id = None
if ha:
if not ha_network:
ha_network = self._create_ha_network(context,
router_db.tenant_id)
self._set_vr_id(context, router_db, ha_network)
self._create_ha_interfaces(context, router_db, ha_network)
self._notify_ha_interfaces_updated(context, router_db.id)
else:
self._delete_ha_interfaces(context, router_db.id)
self._notify_ha_interfaces_updated(context, router_db.id)
return router_db
def update_router_state(self, context, router_id, state, host):
with context.session.begin(subtransactions=True):
bindings = self.get_ha_router_port_bindings(context, [router_id],
host)
if bindings:
if len(bindings) > 1:
LOG.warn(_LW("The router %(router_id)s is bound multiple "
"times on the agent %(host)s"),
{'router_id': router_id, 'host': host})
bindings[0].update({'state': state})
def delete_router(self, context, id):
router_db = self._get_router(context, id)
if router_db.extra_attributes.ha:
ha_network = self.get_ha_network(context,
router_db.tenant_id)
if ha_network:
self._delete_vr_id_allocation(
context, ha_network, router_db.extra_attributes.ha_vr_id)
self._delete_ha_interfaces(context, router_db.id)
return super(L3_HA_NAT_db_mixin, self).delete_router(context, id)
def get_ha_router_port_bindings(self, context, router_ids, host=None):
query = context.session.query(L3HARouterAgentPortBinding)
if host:
query = query.join(agents_db.Agent).filter(
agents_db.Agent.host == host)
query = query.filter(
L3HARouterAgentPortBinding.router_id.in_(router_ids))
return query.all()
def _process_sync_ha_data(self, context, routers, host):
routers_dict = dict((router['id'], router) for router in routers)
bindings = self.get_ha_router_port_bindings(context,
routers_dict.keys(),
host)
for binding in bindings:
port_dict = self._core_plugin._make_port_dict(binding.port)
router = routers_dict.get(binding.router_id)
router[constants.HA_INTERFACE_KEY] = port_dict
router[constants.HA_ROUTER_STATE_KEY] = binding.state
for router in routers_dict.values():
interface = router.get(constants.HA_INTERFACE_KEY)
if interface:
self._populate_subnet_for_ports(context, [interface])
return routers_dict.values()
def get_ha_sync_data_for_host(self, context, host=None, router_ids=None,
active=None):
sync_data = super(L3_HA_NAT_db_mixin, self).get_sync_data(context,
router_ids,
active)
return self._process_sync_ha_data(context, sync_data, host)

86
neutron/db/migration/alembic_migrations/versions/16a27a58e093_ext_l3_ha_mode.py Normal file
View File

@ -0,0 +1,86 @@
# Copyright 2014 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
"""ext_l3_ha_mode
Revision ID: 16a27a58e093
Revises: 86d6d9776e2b
Create Date: 2014-02-01 10:24:12.412733
"""
# revision identifiers, used by Alembic.
revision = '16a27a58e093'
down_revision = '86d6d9776e2b'
from alembic import op
import sqlalchemy as sa
l3_ha_states = sa.Enum('active', 'standby', name='l3_ha_states')
def upgrade(active_plugins=None, options=None):
op.add_column('router_extra_attributes',
sa.Column('ha', sa.Boolean(),
nullable=False,
server_default=sa.sql.false()))
op.add_column('router_extra_attributes',
sa.Column('ha_vr_id', sa.Integer()))
op.create_table('ha_router_agent_port_bindings',
sa.Column('port_id', sa.String(length=36),
nullable=False),
sa.Column('router_id', sa.String(length=36),
nullable=False),
sa.Column('l3_agent_id', sa.String(length=36),
nullable=True),
sa.Column('state', l3_ha_states,
server_default='standby'),
sa.PrimaryKeyConstraint('port_id'),
sa.ForeignKeyConstraint(['port_id'], ['ports.id'],
ondelete='CASCADE'),
sa.ForeignKeyConstraint(['router_id'], ['routers.id'],
ondelete='CASCADE'),
sa.ForeignKeyConstraint(['l3_agent_id'], ['agents.id'],
ondelete='CASCADE'))
op.create_table('ha_router_networks',
sa.Column('tenant_id', sa.String(length=255),
nullable=False, primary_key=True),
sa.Column('network_id', sa.String(length=36),
nullable=False,
primary_key=True),
sa.ForeignKeyConstraint(['network_id'], ['networks.id'],
ondelete='CASCADE'))
op.create_table('ha_router_vrid_allocations',
sa.Column('network_id', sa.String(length=36),
nullable=False,
primary_key=True),
sa.Column('vr_id', sa.Integer(),
nullable=False,
primary_key=True),
sa.ForeignKeyConstraint(['network_id'], ['networks.id'],
ondelete='CASCADE'))
def downgrade(active_plugins=None, options=None):
op.drop_table('ha_router_vrid_allocations')
op.drop_table('ha_router_networks')
op.drop_table('ha_router_agent_port_bindings')
l3_ha_states.drop(op.get_bind(), checkfirst=False)
op.drop_column('router_extra_attributes', 'ha_vr_id')
op.drop_column('router_extra_attributes', 'ha')

2
neutron/db/migration/alembic_migrations/versions/HEAD
View File

@ -1 +1 @@
86d6d9776e2b
16a27a58e093

1
neutron/db/migration/models/head.py
View File

@ -34,6 +34,7 @@ from neutron.db import l3_attrs_db # noqa
from neutron.db import l3_db # noqa
from neutron.db import l3_dvrscheduler_db # noqa
from neutron.db import l3_gwmode_db # noqa
from neutron.db import l3_hamode_db # noqa
from neutron.db.loadbalancer import loadbalancer_db # noqa
from neutron.db.metering import metering_db # noqa
from neutron.db import model_base

91
neutron/extensions/l3_ext_ha_mode.py Normal file
View File

@ -0,0 +1,91 @@
# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
from neutron.api import extensions
from neutron.api.v2 import attributes
from neutron.common import constants
from neutron.common import exceptions
HA_INFO = 'ha'
EXTENDED_ATTRIBUTES_2_0 = {
'routers': {
HA_INFO: {'allow_post': True, 'allow_put': True,
'default': attributes.ATTR_NOT_SPECIFIED, 'is_visible': True,
'enforce_policy': True,
'convert_to': attributes.convert_to_boolean_if_not_none}
}
}
class DistributedHARouterNotSupported(NotImplementedError):
message = _("Currenly distributed HA routers are "
"not supported.")
class MaxVRIDAllocationTriesReached(exceptions.NeutronException):
message = _("Failed to allocate a VRID in the network %(network_id)s "
"for the router %(router_id)s after %(max_tries)s tries.")
class NoVRIDAvailable(exceptions.Conflict):
message = _("No more Virtual Router Identifier (VRID) available when "
"creating router %(router_id)s. The limit of number "
"of HA Routers per tenant is 254.")
class HANetworkCIDRNotValid(exceptions.NeutronException):
message = _("The HA Network CIDR specified in the configuration file "
"isn't valid; %(cidr)s.")
class HANotEnoughAvailableAgents(exceptions.NeutronException):
message = _("Not enough l3 agents available to ensure HA. Minimum "
"required %(min_agents)s, available %(num_agents)s.")
class HAMinimumAgentsNumberNotValid(exceptions.NeutronException):
message = (_("min_l3_agents_per_router config parameter is not valid. "
"It has to be equal to or more than %s for HA.") %
constants.MINIMUM_AGENTS_FOR_HA)
class L3_ext_ha_mode(extensions.ExtensionDescriptor):
"""Extension class supporting virtual router in HA mode."""
@classmethod
def get_name(cls):
return "HA Router extension"
@classmethod
def get_alias(cls):
return constants.L3_HA_MODE_EXT_ALIAS
@classmethod
def get_description(cls):
return "Add HA capability to routers."
@classmethod
def get_namespace(cls):
return ""
@classmethod
def get_updated(cls):
return "2014-04-26T00:00:00-00:00"
def get_extended_resources(self, version):
if version == "2.0":
return EXTENDED_ATTRIBUTES_2_0
else:
return {}

14
neutron/services/l3_router/l3_router_plugin.py
View File

@ -24,18 +24,18 @@ from neutron.common import rpc as n_rpc
from neutron.common import topics
from neutron.db import common_db_mixin
from neutron.db import extraroute_db
from neutron.db import l3_dvr_db
from neutron.db import l3_dvrscheduler_db
from neutron.db import l3_gwmode_db
from neutron.db import l3_hamode_db
from neutron.openstack.common import importutils
from neutron.plugins.common import constants
class L3RouterPlugin(common_db_mixin.CommonDbMixin,
extraroute_db.ExtraRoute_db_mixin,
l3_dvr_db.L3_NAT_with_dvr_db_mixin,
l3_gwmode_db.L3_NAT_db_mixin,
l3_dvrscheduler_db.L3_DVRsch_db_mixin):
l3_dvrscheduler_db.L3_DVRsch_db_mixin,
l3_hamode_db.L3_HA_NAT_db_mixin):
"""Implementation of the Neutron L3 Router Service Plugin.
@ -43,17 +43,19 @@ class L3RouterPlugin(common_db_mixin.CommonDbMixin,
router and floatingip resources and manages associated
request/response.
All DB related work is implemented in classes
l3_db.L3_NAT_db_mixin, l3_dvr_db.L3_NAT_with_dvr_db_mixin, and
extraroute_db.ExtraRoute_db_mixin.
l3_db.L3_NAT_db_mixin, l3_hamode_db.L3_HA_NAT_db_mixin,
l3_dvr_db.L3_NAT_with_dvr_db_mixin, and extraroute_db.ExtraRoute_db_mixin.
"""
supported_extension_aliases = ["dvr", "router", "ext-gw-mode",
"extraroute", "l3_agent_scheduler"]
"extraroute", "l3_agent_scheduler",
"l3-ha"]
def __init__(self):
self.setup_rpc()
self.router_scheduler = importutils.import_object(
cfg.CONF.router_scheduler_driver)
self.start_periodic_agent_status_check()
super(L3RouterPlugin, self).__init__()
def setup_rpc(self):
# RPC support

2
neutron/tests/unit/db/test_l3_dvr_db.py
View File

@ -118,7 +118,7 @@ class L3DvrTestCase(testlib_api.SqlTestCase):
pass_router_id=False)
def _test__is_distributed_router(self, router, expected):
result = l3_dvr_db._is_distributed_router(router)
result = l3_dvr_db.is_distributed_router(router)
self.assertEqual(expected, result)
def test__is_distributed_router_by_db_object(self):

390
neutron/tests/unit/db/test_l3_ha_db.py Normal file
View File

@ -0,0 +1,390 @@
# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from oslo.config import cfg
from neutron.common import constants
from neutron import context
from neutron.db import agents_db
from neutron.db import common_db_mixin
from neutron.db import l3_hamode_db
from neutron.extensions import l3_ext_ha_mode
from neutron import manager
from neutron.openstack.common import uuidutils
from neutron.tests.unit import testlib_api
from neutron.tests.unit import testlib_plugin
_uuid = uuidutils.generate_uuid
class FakeL3Plugin(common_db_mixin.CommonDbMixin,
l3_hamode_db.L3_HA_NAT_db_mixin):
pass
class FakeL3PluginWithAgents(FakeL3Plugin,
agents_db.AgentDbMixin):
pass
class L3HATestFramework(testlib_api.SqlTestCase,
testlib_plugin.PluginSetupHelper):
def setUp(self):
super(L3HATestFramework, self).setUp()
self.admin_ctx = context.get_admin_context()
self.setup_coreplugin('neutron.plugins.ml2.plugin.Ml2Plugin')
self.core_plugin = manager.NeutronManager.get_plugin()
mock.patch.object(l3_hamode_db.L3_HA_NAT_db_mixin, 'get_l3_agents',
create=True, return_value=[1, 2]).start()
notif_p = mock.patch.object(l3_hamode_db.L3_HA_NAT_db_mixin,
'_notify_ha_interfaces_updated')
self.notif_m = notif_p.start()
cfg.CONF.set_override('allow_overlapping_ips', True)
def _create_router(self, ha=True, tenant_id='tenant1', distributed=None):
router = {'name': 'router1', 'admin_state_up': True}
if ha is not None:
router['ha'] = ha
if distributed is not None:
router['distributed'] = distributed
return self.plugin._create_router_db(self.admin_ctx, router, tenant_id)
def _update_router(self, router_id, ha=True, distributed=None):
data = {'ha': ha} if ha is not None else {}
if distributed is not None:
data['distributed'] = distributed
return self.plugin._update_router_db(self.admin_ctx, router_id,
data, None)
class L3HAGetSyncDataTestCase(L3HATestFramework):
def setUp(self):
super(L3HAGetSyncDataTestCase, self).setUp()
self.plugin = FakeL3PluginWithAgents()
self._register_agents()
def _register_agents(self):
agent_status = {
'agent_type': constants.AGENT_TYPE_L3,
'binary': 'neutron-l3-agent',
'host': 'l3host',
'topic': 'N/A'
}
self.plugin.create_or_update_agent(self.admin_ctx, agent_status)
agent_status['host'] = 'l3host_2'
self.plugin.create_or_update_agent(self.admin_ctx, agent_status)
self.agent1, self.agent2 = self.plugin.get_agents(self.admin_ctx)
def _bind_router(self, router_id):
with self.admin_ctx.session.begin(subtransactions=True):
bindings = self.plugin.get_ha_router_port_bindings(self.admin_ctx,
[router_id])
for agent_id, binding in zip(
[self.agent1['id'], self.agent2['id']], bindings):
binding.l3_agent_id = agent_id
def test_l3_agent_routers_query_interface(self):
router = self._create_router()
self._bind_router(router.id)
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx,
self.agent1['host'])
self.assertEqual(1, len(routers))
router = routers[0]
self.assertIsNotNone(router.get('ha'))
interface = router.get(constants.HA_INTERFACE_KEY)
self.assertIsNotNone(interface)
self.assertEqual(constants.DEVICE_OWNER_ROUTER_HA_INTF,
interface['device_owner'])
self.assertEqual(cfg.CONF.l3_ha_net_cidr, interface['subnet']['cidr'])
def test_update_state(self):
router = self._create_router()
self._bind_router(router.id)
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx,
self.agent1['host'])
state = routers[0].get(constants.HA_ROUTER_STATE_KEY)
self.assertEqual('standby', state)
self.plugin.update_router_state(self.admin_ctx, router.id, 'active',
self.agent1['host'])
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx,
self.agent1['host'])
state = routers[0].get(constants.HA_ROUTER_STATE_KEY)
self.assertEqual('active', state)
class L3HATestCase(L3HATestFramework):
def setUp(self):
super(L3HATestCase, self).setUp()
self.plugin = FakeL3Plugin()
def test_verify_configuration_succeed(self):
# Default configuration should pass
self.plugin._verify_configuration()
def test_verify_configuration_l3_ha_net_cidr_is_not_a_cidr(self):
cfg.CONF.set_override('l3_ha_net_cidr', 'not a cidr')
self.assertRaises(
l3_ext_ha_mode.HANetworkCIDRNotValid,
self.plugin._verify_configuration)
def test_verify_configuration_l3_ha_net_cidr_is_not_a_subnet(self):
cfg.CONF.set_override('l3_ha_net_cidr', '10.0.0.1/8')
self.assertRaises(
l3_ext_ha_mode.HANetworkCIDRNotValid,
self.plugin._verify_configuration)
def test_verify_conifguration_min_l3_agents_per_router_below_minimum(self):
cfg.CONF.set_override('min_l3_agents_per_router', 0)
self.assertRaises(
l3_ext_ha_mode.HAMinimumAgentsNumberNotValid,
self.plugin._verify_configuration)
def test_ha_router_create(self):
router = self._create_router()
self.assertTrue(router.extra_attributes['ha'])
def test_ha_router_create_with_distributed(self):
self.assertRaises(l3_ext_ha_mode.DistributedHARouterNotSupported,
self._create_router,
distributed=True)
def test_no_ha_router_create(self):
router = self._create_router(ha=False)
self.assertFalse(router.extra_attributes['ha'])
def test_router_create_with_ha_conf_enabled(self):
cfg.CONF.set_override('l3_ha', True)
router = self._create_router(ha=None)
self.assertTrue(router.extra_attributes['ha'])
def test_migration_from_ha(self):
router = self._create_router()
self.assertTrue(router.extra_attributes['ha'])
router = self._update_router(router.id, ha=False)
self.assertFalse(router.extra_attributes['ha'])
self.assertIsNone(router.extra_attributes['ha_vr_id'])
def test_migration_to_ha(self):
router = self._create_router(ha=False)
self.assertFalse(router.extra_attributes['ha'])
router = self._update_router(router.id, ha=True)
self.assertTrue(router.extra_attributes['ha'])
self.assertIsNotNone(router.extra_attributes['ha_vr_id'])
def test_migrate_ha_router_to_distributed(self):
router = self._create_router()
self.assertTrue(router.extra_attributes['ha'])
self.assertRaises(l3_ext_ha_mode.DistributedHARouterNotSupported,
self._update_router,
router.id,
distributed=True)
def test_unique_ha_network_per_tenant(self):
tenant1 = _uuid()
tenant2 = _uuid()
self._create_router(tenant_id=tenant1)
self._create_router(tenant_id=tenant2)
ha_network1 = self.plugin.get_ha_network(self.admin_ctx, tenant1)
ha_network2 = self.plugin.get_ha_network(self.admin_ctx, tenant2)
self.assertNotEqual(
ha_network1['network_id'], ha_network2['network_id'])
def _deployed_router_change_ha_flag(self, to_ha):
self._create_router(ha=not to_ha)
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx)
router = routers[0]
interface = router.get(constants.HA_INTERFACE_KEY)
if to_ha:
self.assertIsNone(interface)
else:
self.assertIsNotNone(interface)
self._update_router(router['id'], to_ha)
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx)
router = routers[0]
interface = router.get(constants.HA_INTERFACE_KEY)
if to_ha:
self.assertIsNotNone(interface)
else:
self.assertIsNone(interface)
def test_deployed_router_can_have_ha_enabled(self):
self._deployed_router_change_ha_flag(to_ha=True)
def test_deployed_router_can_have_ha_disabled(self):
self._deployed_router_change_ha_flag(to_ha=False)
def test_create_ha_router_notifies_agent(self):
self._create_router()
self.assertTrue(self.notif_m.called)
def test_update_router_to_ha_notifies_agent(self):
router = self._create_router(ha=False)
self.notif_m.reset_mock()
self._update_router(router.id, ha=True)
self.assertTrue(self.notif_m.called)
def test_unique_vr_id_between_routers(self):
self._create_router()
self._create_router()
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx)
self.assertEqual(2, len(routers))
self.assertNotEqual(routers[0]['ha_vr_id'], routers[1]['ha_vr_id'])
@mock.patch('neutron.db.l3_hamode_db.VR_ID_RANGE', new=set(range(1, 1)))
def test_vr_id_depleted(self):
self.assertRaises(l3_ext_ha_mode.NoVRIDAvailable, self._create_router)
@mock.patch('neutron.db.l3_hamode_db.VR_ID_RANGE', new=set(range(1, 2)))
def test_vr_id_unique_range_per_tenant(self):
self._create_router()
self._create_router(tenant_id=_uuid())
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx)
self.assertEqual(2, len(routers))
self.assertEqual(routers[0]['ha_vr_id'], routers[1]['ha_vr_id'])
@mock.patch('neutron.db.l3_hamode_db.MAX_ALLOCATION_TRIES', new=2)
def test_vr_id_allocation_contraint_conflict(self):
router = self._create_router()
network = self.plugin.get_ha_network(self.admin_ctx, router.tenant_id)
with mock.patch.object(self.plugin, '_get_allocated_vr_id',
return_value=set()) as alloc:
self.assertRaises(l3_ext_ha_mode.MaxVRIDAllocationTriesReached,
self.plugin._allocate_vr_id, self.admin_ctx,
network.network_id, router.id)
self.assertEqual(2, len(alloc.mock_calls))
def test_vr_id_allocation_delete_router(self):
router = self._create_router()
network = self.plugin.get_ha_network(self.admin_ctx, router.tenant_id)
allocs_before = self.plugin._get_allocated_vr_id(self.admin_ctx,
network.network_id)
router = self._create_router()
allocs_current = self.plugin._get_allocated_vr_id(self.admin_ctx,
network.network_id)
self.assertNotEqual(allocs_before, allocs_current)
self.plugin.delete_router(self.admin_ctx, router.id)
allocs_after = self.plugin._get_allocated_vr_id(self.admin_ctx,
network.network_id)
self.assertEqual(allocs_before, allocs_after)
def test_vr_id_allocation_router_migration(self):
router = self._create_router()
network = self.plugin.get_ha_network(self.admin_ctx, router.tenant_id)
allocs_before = self.plugin._get_allocated_vr_id(self.admin_ctx,
network.network_id)
router = self._create_router()
self._update_router(router.id, ha=False)
allocs_after = self.plugin._get_allocated_vr_id(self.admin_ctx,
network.network_id)
self.assertEqual(allocs_before, allocs_after)
def test_one_ha_router_one_not(self):
self._create_router(ha=False)
self._create_router()
routers = self.plugin.get_ha_sync_data_for_host(self.admin_ctx)
ha0 = routers[0]['ha']
ha1 = routers[1]['ha']
self.assertNotEqual(ha0, ha1)
def test_add_ha_port_binding_failure_rolls_back_port(self):
router = self._create_router()
device_filter = {'device_id': [router.id]}
ports_before = self.core_plugin.get_ports(
self.admin_ctx, filters=device_filter)
network = self.plugin.get_ha_network(self.admin_ctx, router.tenant_id)
with mock.patch.object(self.plugin, '_create_ha_port_binding',
side_effect=ValueError):
self.assertRaises(ValueError, self.plugin.add_ha_port,
self.admin_ctx, router.id, network.network_id,
router.tenant_id)
ports_after = self.core_plugin.get_ports(
self.admin_ctx, filters=device_filter)
self.assertEqual(ports_before, ports_after)
def test_create_ha_network_binding_failure_rolls_back_network(self):
networks_before = self.core_plugin.get_networks(self.admin_ctx)
with mock.patch.object(self.plugin,
'_create_ha_network_tenant_binding',
side_effect=ValueError):
self.assertRaises(ValueError, self.plugin._create_ha_network,
self.admin_ctx, _uuid())
networks_after = self.core_plugin.get_networks(self.admin_ctx)
self.assertEqual(networks_before, networks_after)
def test_create_ha_network_subnet_failure_rolls_back_network(self):
networks_before = self.core_plugin.get_networks(self.admin_ctx)
with mock.patch.object(self.plugin, '_create_ha_subnet',
side_effect=ValueError):
self.assertRaises(ValueError, self.plugin._create_ha_network,
self.admin_ctx, _uuid())
networks_after = self.core_plugin.get_networks(self.admin_ctx)
self.assertEqual(networks_before, networks_after)
def test_create_ha_interfaces_binding_failure_rolls_back_ports(self):
router = self._create_router()
network = self.plugin.get_ha_network(self.admin_ctx, router.tenant_id)
device_filter = {'device_id': [router.id]}
ports_before = self.core_plugin.get_ports(
self.admin_ctx, filters=device_filter)
with mock.patch.object(self.plugin, '_create_ha_port_binding',
side_effect=ValueError):
self.assertRaises(ValueError, self.plugin._create_ha_interfaces,
self.admin_ctx, router, network)
ports_after = self.core_plugin.get_ports(
self.admin_ctx, filters=device_filter)
self.assertEqual(ports_before, ports_after)
def test_create_router_db_ha_attribute_failure_rolls_back_router(self):
routers_before = self.plugin.get_routers(self.admin_ctx)
for method in ('_set_vr_id',
'_create_ha_interfaces',
'_notify_ha_interfaces_updated'):
with mock.patch.object(self.plugin, method,
side_effect=ValueError):
self.assertRaises(ValueError, self._create_router)
routers_after = self.plugin.get_routers(self.admin_ctx)
self.assertEqual(routers_before, routers_after)