vmware-nsx/quantum/agent/l3_agent.py
gongysh c51b3ff25c Log the configuration options for metadata-proxy and agent.
Bug #1144370

Change-Id: I35ac570dd55006d0133736588f0302d6f70294de
2013-03-10 09:59:24 +08:00

757 lines
32 KiB
Python

"""
# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2012 Nicira Networks, Inc. All rights reserved.
#
# 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.
#
# @author: Dan Wendlandt, Nicira, Inc
#
"""
import sys
import eventlet
from eventlet import semaphore
import netaddr
from oslo.config import cfg
from quantum.agent.common import config
from quantum.agent.linux import external_process
from quantum.agent.linux import interface
from quantum.agent.linux import ip_lib
from quantum.agent.linux import iptables_manager
from quantum.agent.linux import utils
from quantum.agent import rpc as agent_rpc
from quantum.common import constants as l3_constants
from quantum.common import topics
from quantum.common import utils as common_utils
from quantum import context
from quantum import manager
from quantum.openstack.common import importutils
from quantum.openstack.common import log as logging
from quantum.openstack.common import loopingcall
from quantum.openstack.common import periodic_task
from quantum.openstack.common.rpc import common as rpc_common
from quantum.openstack.common.rpc import proxy
from quantum.openstack.common import service
from quantum import service as quantum_service
LOG = logging.getLogger(__name__)
NS_PREFIX = 'qrouter-'
INTERNAL_DEV_PREFIX = 'qr-'
EXTERNAL_DEV_PREFIX = 'qg-'
class L3PluginApi(proxy.RpcProxy):
"""Agent side of the l3 agent RPC API.
API version history:
1.0 - Initial version.
"""
BASE_RPC_API_VERSION = '1.0'
def __init__(self, topic, host):
super(L3PluginApi, self).__init__(
topic=topic, default_version=self.BASE_RPC_API_VERSION)
self.host = host
def get_routers(self, context, fullsync=True, router_id=None):
"""Make a remote process call to retrieve the sync data for routers."""
router_ids = [router_id] if router_id else None
return self.call(context,
self.make_msg('sync_routers', host=self.host,
fullsync=fullsync,
router_ids=router_ids),
topic=self.topic)
def get_external_network_id(self, context):
"""Make a remote process call to retrieve the external network id.
@raise common.RemoteError: with TooManyExternalNetworks
as exc_type if there are
more than one external network
"""
return self.call(context,
self.make_msg('get_external_network_id',
host=self.host),
topic=self.topic)
class RouterInfo(object):
def __init__(self, router_id, root_helper, use_namespaces, router):
self.router_id = router_id
self.ex_gw_port = None
self.internal_ports = []
self.floating_ips = []
self.root_helper = root_helper
self.use_namespaces = use_namespaces
self.router = router
self.iptables_manager = iptables_manager.IptablesManager(
root_helper=root_helper,
#FIXME(danwent): use_ipv6=True,
namespace=self.ns_name())
self.routes = []
def ns_name(self):
if self.use_namespaces:
return NS_PREFIX + self.router_id
class L3NATAgent(manager.Manager):
OPTS = [
cfg.StrOpt('external_network_bridge', default='br-ex',
help=_("Name of bridge used for external network "
"traffic.")),
cfg.StrOpt('interface_driver',
help=_("The driver used to manage the virtual "
"interface.")),
cfg.IntOpt('metadata_port',
default=9697,
help=_("TCP Port used by Quantum metadata namespace "
"proxy.")),
cfg.IntOpt('send_arp_for_ha',
default=3,
help=_("Send this many gratuitous ARPs for HA setup, "
"set it below or equal to 0 to disable this "
"feature.")),
cfg.BoolOpt('use_namespaces', default=True,
help=_("Allow overlapping IP.")),
cfg.StrOpt('router_id', default='',
help=_("If namespaces is disabled, the l3 agent can only"
" confgure a router that has the matching router "
"ID.")),
cfg.BoolOpt('handle_internal_only_routers',
default=True,
help=_("Agent should implement routers with no gateway")),
cfg.StrOpt('gateway_external_network_id', default='',
help=_("UUID of external network for routers implemented "
"by the agents.")),
]
def __init__(self, host, conf=None):
if conf:
self.conf = conf
else:
self.conf = cfg.CONF
self.root_helper = config.get_root_helper(self.conf)
self.router_info = {}
if not self.conf.interface_driver:
raise SystemExit(_('An interface driver must be specified'))
try:
self.driver = importutils.import_object(self.conf.interface_driver,
self.conf)
except:
msg = _("Error importing interface driver "
"'%s'") % self.conf.interface_driver
raise SystemExit(msg)
self.context = context.get_admin_context_without_session()
self.plugin_rpc = L3PluginApi(topics.PLUGIN, host)
self.fullsync = True
self.sync_sem = semaphore.Semaphore(1)
if self.conf.use_namespaces:
self._destroy_router_namespaces(self.conf.router_id)
super(L3NATAgent, self).__init__(host=self.conf.host)
def _destroy_router_namespaces(self, only_router_id=None):
"""Destroy router namespaces on the host to eliminate all stale
linux devices, iptables rules, and namespaces.
If only_router_id is passed, only destroy single namespace, to allow
for multiple l3 agents on the same host, without stepping on each
other's toes on init. This only makes sense if router_id is set.
"""
root_ip = ip_lib.IPWrapper(self.root_helper)
for ns in root_ip.get_namespaces(self.root_helper):
if ns.startswith(NS_PREFIX):
if only_router_id and not ns.endswith(only_router_id):
continue
try:
self._destroy_router_namespace(ns)
except:
LOG.exception(_("Failed deleting namespace '%s'"), ns)
def _destroy_router_namespace(self, namespace):
ns_ip = ip_lib.IPWrapper(self.root_helper, namespace=namespace)
for d in ns_ip.get_devices(exclude_loopback=True):
if d.name.startswith(INTERNAL_DEV_PREFIX):
# device is on default bridge
self.driver.unplug(d.name, namespace=namespace,
prefix=INTERNAL_DEV_PREFIX)
elif d.name.startswith(EXTERNAL_DEV_PREFIX):
self.driver.unplug(d.name,
bridge=self.conf.external_network_bridge,
namespace=namespace,
prefix=EXTERNAL_DEV_PREFIX)
#(TODO) Address the failure for the deletion of the namespace
def _create_router_namespace(self, ri):
ip_wrapper_root = ip_lib.IPWrapper(self.root_helper)
ip_wrapper = ip_wrapper_root.ensure_namespace(ri.ns_name())
ip_wrapper.netns.execute(['sysctl', '-w', 'net.ipv4.ip_forward=1'])
def _fetch_external_net_id(self):
"""Find UUID of single external network for this agent"""
if self.conf.gateway_external_network_id:
return self.conf.gateway_external_network_id
try:
return self.plugin_rpc.get_external_network_id(self.context)
except rpc_common.RemoteError as e:
if e.exc_type == 'TooManyExternalNetworks':
msg = _(
"The 'gateway_external_network_id' must be configured"
" if Quantum has more than one external network.")
raise Exception(msg)
else:
raise
def _router_added(self, router_id, router):
ri = RouterInfo(router_id, self.root_helper,
self.conf.use_namespaces, router)
self.router_info[router_id] = ri
if self.conf.use_namespaces:
self._create_router_namespace(ri)
for c, r in self.metadata_filter_rules():
ri.iptables_manager.ipv4['filter'].add_rule(c, r)
for c, r in self.metadata_nat_rules():
ri.iptables_manager.ipv4['nat'].add_rule(c, r)
ri.iptables_manager.apply()
self._spawn_metadata_proxy(ri)
def _router_removed(self, router_id):
ri = self.router_info[router_id]
ri.router['gw_port'] = None
ri.router[l3_constants.INTERFACE_KEY] = []
ri.router[l3_constants.FLOATINGIP_KEY] = []
self.process_router(ri)
for c, r in self.metadata_filter_rules():
ri.iptables_manager.ipv4['filter'].remove_rule(c, r)
for c, r in self.metadata_nat_rules():
ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
ri.iptables_manager.apply()
self._destroy_metadata_proxy(ri)
del self.router_info[router_id]
self._destroy_router_namespace(ri.ns_name())
def _spawn_metadata_proxy(self, router_info):
def callback(pid_file):
proxy_cmd = ['quantum-ns-metadata-proxy',
'--pid_file=%s' % pid_file,
'--router_id=%s' % router_info.router_id,
'--state_path=%s' % self.conf.state_path]
proxy_cmd.extend(config.get_log_args(
cfg.CONF, 'quantum-ns-metadata-proxy%s.log' %
router_info.router_id))
return proxy_cmd
pm = external_process.ProcessManager(
self.conf,
router_info.router_id,
self.root_helper,
router_info.ns_name())
pm.enable(callback)
def _destroy_metadata_proxy(self, router_info):
pm = external_process.ProcessManager(
self.conf,
router_info.router_id,
self.root_helper,
router_info.ns_name())
pm.disable()
def _set_subnet_info(self, port):
ips = port['fixed_ips']
if not ips:
raise Exception(_("Router port %s has no IP address") % port['id'])
if len(ips) > 1:
LOG.error(_("Ignoring multiple IPs on router port %s"),
port['id'])
prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen
port['ip_cidr'] = "%s/%s" % (ips[0]['ip_address'], prefixlen)
def process_router(self, ri):
ex_gw_port = self._get_ex_gw_port(ri)
internal_ports = ri.router.get(l3_constants.INTERFACE_KEY, [])
existing_port_ids = set([p['id'] for p in ri.internal_ports])
current_port_ids = set([p['id'] for p in internal_ports
if p['admin_state_up']])
new_ports = [p for p in internal_ports if
p['id'] in current_port_ids and
p['id'] not in existing_port_ids]
old_ports = [p for p in ri.internal_ports if
p['id'] not in current_port_ids]
for p in new_ports:
self._set_subnet_info(p)
ri.internal_ports.append(p)
self.internal_network_added(ri, ex_gw_port,
p['network_id'], p['id'],
p['ip_cidr'], p['mac_address'])
for p in old_ports:
ri.internal_ports.remove(p)
self.internal_network_removed(ri, ex_gw_port, p['id'],
p['ip_cidr'])
internal_cidrs = [p['ip_cidr'] for p in ri.internal_ports]
if ex_gw_port and not ri.ex_gw_port:
self._set_subnet_info(ex_gw_port)
self.external_gateway_added(ri, ex_gw_port, internal_cidrs)
elif not ex_gw_port and ri.ex_gw_port:
self.external_gateway_removed(ri, ri.ex_gw_port,
internal_cidrs)
if ri.ex_gw_port or ex_gw_port:
self.process_router_floating_ips(ri, ex_gw_port)
ri.ex_gw_port = ex_gw_port
self.routes_updated(ri)
def process_router_floating_ips(self, ri, ex_gw_port):
floating_ips = ri.router.get(l3_constants.FLOATINGIP_KEY, [])
existing_floating_ip_ids = set([fip['id'] for fip in ri.floating_ips])
cur_floating_ip_ids = set([fip['id'] for fip in floating_ips])
id_to_fip_map = {}
for fip in floating_ips:
if fip['port_id']:
if fip['id'] not in existing_floating_ip_ids:
ri.floating_ips.append(fip)
self.floating_ip_added(ri, ex_gw_port,
fip['floating_ip_address'],
fip['fixed_ip_address'])
# store to see if floatingip was remapped
id_to_fip_map[fip['id']] = fip
floating_ip_ids_to_remove = (existing_floating_ip_ids -
cur_floating_ip_ids)
for fip in ri.floating_ips:
if fip['id'] in floating_ip_ids_to_remove:
ri.floating_ips.remove(fip)
self.floating_ip_removed(ri, ri.ex_gw_port,
fip['floating_ip_address'],
fip['fixed_ip_address'])
else:
# handle remapping of a floating IP
new_fip = id_to_fip_map[fip['id']]
new_fixed_ip = new_fip['fixed_ip_address']
existing_fixed_ip = fip['fixed_ip_address']
if (new_fixed_ip and existing_fixed_ip and
new_fixed_ip != existing_fixed_ip):
floating_ip = fip['floating_ip_address']
self.floating_ip_removed(ri, ri.ex_gw_port,
floating_ip, existing_fixed_ip)
self.floating_ip_added(ri, ri.ex_gw_port,
floating_ip, new_fixed_ip)
ri.floating_ips.remove(fip)
ri.floating_ips.append(new_fip)
def _get_ex_gw_port(self, ri):
return ri.router.get('gw_port')
def _send_gratuitous_arp_packet(self, ri, interface_name, ip_address):
if self.conf.send_arp_for_ha > 0:
arping_cmd = ['arping', '-A', '-U',
'-I', interface_name,
'-c', self.conf.send_arp_for_ha,
ip_address]
try:
if self.conf.use_namespaces:
ip_wrapper = ip_lib.IPWrapper(self.root_helper,
namespace=ri.ns_name())
ip_wrapper.netns.execute(arping_cmd, check_exit_code=True)
else:
utils.execute(arping_cmd, check_exit_code=True,
root_helper=self.root_helper)
except Exception as e:
LOG.error(_("Failed sending gratuitous ARP: %s"), str(e))
def get_internal_device_name(self, port_id):
return (INTERNAL_DEV_PREFIX + port_id)[:self.driver.DEV_NAME_LEN]
def get_external_device_name(self, port_id):
return (EXTERNAL_DEV_PREFIX + port_id)[:self.driver.DEV_NAME_LEN]
def external_gateway_added(self, ri, ex_gw_port, internal_cidrs):
interface_name = self.get_external_device_name(ex_gw_port['id'])
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
if not ip_lib.device_exists(interface_name,
root_helper=self.root_helper,
namespace=ri.ns_name()):
self.driver.plug(ex_gw_port['network_id'],
ex_gw_port['id'], interface_name,
ex_gw_port['mac_address'],
bridge=self.conf.external_network_bridge,
namespace=ri.ns_name(),
prefix=EXTERNAL_DEV_PREFIX)
self.driver.init_l3(interface_name, [ex_gw_port['ip_cidr']],
namespace=ri.ns_name())
ip_address = ex_gw_port['ip_cidr'].split('/')[0]
self._send_gratuitous_arp_packet(ri, interface_name, ip_address)
gw_ip = ex_gw_port['subnet']['gateway_ip']
if ex_gw_port['subnet']['gateway_ip']:
cmd = ['route', 'add', 'default', 'gw', gw_ip]
if self.conf.use_namespaces:
ip_wrapper = ip_lib.IPWrapper(self.root_helper,
namespace=ri.ns_name())
ip_wrapper.netns.execute(cmd, check_exit_code=False)
else:
utils.execute(cmd, check_exit_code=False,
root_helper=self.root_helper)
for (c, r) in self.external_gateway_nat_rules(ex_gw_ip,
internal_cidrs,
interface_name):
ri.iptables_manager.ipv4['nat'].add_rule(c, r)
ri.iptables_manager.apply()
def external_gateway_removed(self, ri, ex_gw_port, internal_cidrs):
interface_name = self.get_external_device_name(ex_gw_port['id'])
if ip_lib.device_exists(interface_name,
root_helper=self.root_helper,
namespace=ri.ns_name()):
self.driver.unplug(interface_name,
bridge=self.conf.external_network_bridge,
namespace=ri.ns_name(),
prefix=EXTERNAL_DEV_PREFIX)
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
for c, r in self.external_gateway_nat_rules(ex_gw_ip, internal_cidrs,
interface_name):
ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
ri.iptables_manager.apply()
def metadata_filter_rules(self):
rules = []
rules.append(('INPUT', '-s 0.0.0.0/0 -d 127.0.0.1 '
'-p tcp -m tcp --dport %s '
'-j ACCEPT' % self.conf.metadata_port))
return rules
def metadata_nat_rules(self):
rules = []
rules.append(('PREROUTING', '-s 0.0.0.0/0 -d 169.254.169.254/32 '
'-p tcp -m tcp --dport 80 -j REDIRECT '
'--to-port %s' % self.conf.metadata_port))
return rules
def external_gateway_nat_rules(self, ex_gw_ip, internal_cidrs,
interface_name):
rules = [('POSTROUTING', '! -i %(interface_name)s '
'! -o %(interface_name)s -m conntrack ! '
'--ctstate DNAT -j ACCEPT' % locals())]
for cidr in internal_cidrs:
rules.extend(self.internal_network_nat_rules(ex_gw_ip, cidr))
return rules
def internal_network_added(self, ri, ex_gw_port, network_id, port_id,
internal_cidr, mac_address):
interface_name = self.get_internal_device_name(port_id)
if not ip_lib.device_exists(interface_name,
root_helper=self.root_helper,
namespace=ri.ns_name()):
self.driver.plug(network_id, port_id, interface_name, mac_address,
namespace=ri.ns_name(),
prefix=INTERNAL_DEV_PREFIX)
self.driver.init_l3(interface_name, [internal_cidr],
namespace=ri.ns_name())
ip_address = internal_cidr.split('/')[0]
self._send_gratuitous_arp_packet(ri, interface_name, ip_address)
if ex_gw_port:
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
for c, r in self.internal_network_nat_rules(ex_gw_ip,
internal_cidr):
ri.iptables_manager.ipv4['nat'].add_rule(c, r)
ri.iptables_manager.apply()
def internal_network_removed(self, ri, ex_gw_port, port_id, internal_cidr):
interface_name = self.get_internal_device_name(port_id)
if ip_lib.device_exists(interface_name,
root_helper=self.root_helper,
namespace=ri.ns_name()):
self.driver.unplug(interface_name, namespace=ri.ns_name(),
prefix=INTERNAL_DEV_PREFIX)
if ex_gw_port:
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
for c, r in self.internal_network_nat_rules(ex_gw_ip,
internal_cidr):
ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
ri.iptables_manager.apply()
def internal_network_nat_rules(self, ex_gw_ip, internal_cidr):
rules = [('snat', '-s %s -j SNAT --to-source %s' %
(internal_cidr, ex_gw_ip))]
return rules
def floating_ip_added(self, ri, ex_gw_port, floating_ip, fixed_ip):
ip_cidr = str(floating_ip) + '/32'
interface_name = self.get_external_device_name(ex_gw_port['id'])
device = ip_lib.IPDevice(interface_name, self.root_helper,
namespace=ri.ns_name())
if ip_cidr not in [addr['cidr'] for addr in device.addr.list()]:
net = netaddr.IPNetwork(ip_cidr)
device.addr.add(net.version, ip_cidr, str(net.broadcast))
self._send_gratuitous_arp_packet(ri, interface_name, floating_ip)
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
ri.iptables_manager.ipv4['nat'].add_rule(chain, rule)
ri.iptables_manager.apply()
def floating_ip_removed(self, ri, ex_gw_port, floating_ip, fixed_ip):
ip_cidr = str(floating_ip) + '/32'
net = netaddr.IPNetwork(ip_cidr)
interface_name = self.get_external_device_name(ex_gw_port['id'])
device = ip_lib.IPDevice(interface_name, self.root_helper,
namespace=ri.ns_name())
device.addr.delete(net.version, ip_cidr)
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
ri.iptables_manager.ipv4['nat'].remove_rule(chain, rule)
ri.iptables_manager.apply()
def floating_forward_rules(self, floating_ip, fixed_ip):
return [('PREROUTING', '-d %s -j DNAT --to %s' %
(floating_ip, fixed_ip)),
('OUTPUT', '-d %s -j DNAT --to %s' %
(floating_ip, fixed_ip)),
('float-snat', '-s %s -j SNAT --to %s' %
(fixed_ip, floating_ip))]
def router_deleted(self, context, router_id):
"""Deal with router deletion RPC message."""
with self.sync_sem:
if router_id in self.router_info:
try:
self._router_removed(router_id)
except Exception:
msg = _("Failed dealing with router "
"'%s' deletion RPC message")
LOG.debug(msg, router_id)
self.fullsync = True
def routers_updated(self, context, routers):
"""Deal with routers modification and creation RPC message."""
if not routers:
return
with self.sync_sem:
try:
self._process_routers(routers)
except Exception:
msg = _("Failed dealing with routers update RPC message")
LOG.debug(msg)
self.fullsync = True
def router_removed_from_agent(self, context, payload):
self.router_deleted(context, payload['router_id'])
def router_added_to_agent(self, context, payload):
self.routers_updated(context, payload)
def _process_routers(self, routers, all_routers=False):
if (self.conf.external_network_bridge and
not ip_lib.device_exists(self.conf.external_network_bridge)):
LOG.error(_("The external network bridge '%s' does not exist"),
self.conf.external_network_bridge)
return
target_ex_net_id = self._fetch_external_net_id()
# if routers are all the routers we have (They are from router sync on
# starting or when error occurs during running), we seek the
# routers which should be removed.
# If routers are from server side notification, we seek them
# from subset of incoming routers and ones we have now.
if all_routers:
prev_router_ids = set(self.router_info)
else:
prev_router_ids = set(self.router_info) & set(
[router['id'] for router in routers])
cur_router_ids = set()
for r in routers:
if not r['admin_state_up']:
continue
# If namespaces are disabled, only process the router associated
# with the configured agent id.
if (not self.conf.use_namespaces and
r['id'] != self.conf.router_id):
continue
ex_net_id = (r['external_gateway_info'] or {}).get('network_id')
if not ex_net_id and not self.conf.handle_internal_only_routers:
continue
if ex_net_id and ex_net_id != target_ex_net_id:
continue
cur_router_ids.add(r['id'])
if r['id'] not in self.router_info:
self._router_added(r['id'], r)
ri = self.router_info[r['id']]
ri.router = r
self.process_router(ri)
# identify and remove routers that no longer exist
for router_id in prev_router_ids - cur_router_ids:
self._router_removed(router_id)
@periodic_task.periodic_task
def _sync_routers_task(self, context):
# we need to sync with router deletion RPC message
with self.sync_sem:
if self.fullsync:
try:
if not self.conf.use_namespaces:
router_id = self.conf.router_id
else:
router_id = None
routers = self.plugin_rpc.get_routers(
context, router_id)
self._process_routers(routers, all_routers=True)
self.fullsync = False
except Exception:
LOG.exception(_("Failed synchronizing routers"))
self.fullsync = True
def after_start(self):
LOG.info(_("L3 agent started"))
def _update_routing_table(self, ri, operation, route):
cmd = ['ip', 'route', operation, 'to', route['destination'],
'via', route['nexthop']]
#TODO(nati) move this code to iplib
if self.conf.use_namespaces:
ip_wrapper = ip_lib.IPWrapper(self.conf.root_helper,
namespace=ri.ns_name())
ip_wrapper.netns.execute(cmd, check_exit_code=False)
else:
utils.execute(cmd, check_exit_code=False,
root_helper=self.conf.root_helper)
def routes_updated(self, ri):
new_routes = ri.router['routes']
old_routes = ri.routes
adds, removes = common_utils.diff_list_of_dict(old_routes,
new_routes)
for route in adds:
LOG.debug(_("Added route entry is '%s'"), route)
# remove replaced route from deleted route
for del_route in removes:
if route['destination'] == del_route['destination']:
removes.remove(del_route)
#replace success even if there is no existing route
self._update_routing_table(ri, 'replace', route)
for route in removes:
LOG.debug(_("Removed route entry is '%s'"), route)
self._update_routing_table(ri, 'delete', route)
ri.routes = new_routes
class L3NATAgentWithStateReport(L3NATAgent):
def __init__(self, host, conf=None):
super(L3NATAgentWithStateReport, self).__init__(host=host, conf=conf)
self.state_rpc = agent_rpc.PluginReportStateAPI(topics.PLUGIN)
self.agent_state = {
'binary': 'quantum-l3-agent',
'host': host,
'topic': topics.L3_AGENT,
'configurations': {
'use_namespaces': self.conf.use_namespaces,
'router_id': self.conf.router_id,
'handle_internal_only_routers':
self.conf.handle_internal_only_routers,
'gateway_external_network_id':
self.conf.gateway_external_network_id,
'interface_driver': self.conf.interface_driver},
'start_flag': True,
'agent_type': l3_constants.AGENT_TYPE_L3}
report_interval = cfg.CONF.AGENT.report_interval
if report_interval:
self.heartbeat = loopingcall.LoopingCall(self._report_state)
self.heartbeat.start(interval=report_interval)
def _report_state(self):
num_ex_gw_ports = 0
num_interfaces = 0
num_floating_ips = 0
router_infos = self.router_info.values()
num_routers = len(router_infos)
for ri in router_infos:
ex_gw_port = self._get_ex_gw_port(ri)
if ex_gw_port:
num_ex_gw_ports += 1
num_interfaces += len(ri.router.get(l3_constants.INTERFACE_KEY,
[]))
num_floating_ips += len(ri.router.get(l3_constants.FLOATINGIP_KEY,
[]))
configurations = self.agent_state['configurations']
configurations['routers'] = num_routers
configurations['ex_gw_ports'] = num_ex_gw_ports
configurations['interfaces'] = num_interfaces
configurations['floating_ips'] = num_floating_ips
try:
self.state_rpc.report_state(self.context,
self.agent_state)
self.agent_state.pop('start_flag', None)
except AttributeError:
# This means the server does not support report_state
LOG.warn(_("Quantum server does not support state report."
" State report for this agent will be disabled."))
self.heartbeat.stop()
return
except Exception:
LOG.exception(_("Failed reporting state!"))
def agent_updated(self, context, payload):
"""Handle the agent_updated notification event."""
self.fullsync = True
LOG.info(_("agent_updated by server side %s!"), payload)
def main():
eventlet.monkey_patch()
conf = cfg.CONF
conf.register_opts(L3NATAgent.OPTS)
config.register_agent_state_opts_helper(conf)
config.register_root_helper(conf)
conf.register_opts(interface.OPTS)
conf.register_opts(external_process.OPTS)
conf(project='quantum')
config.setup_logging(conf)
server = quantum_service.Service.create(
binary='quantum-l3-agent',
topic=topics.L3_AGENT,
report_interval=cfg.CONF.AGENT.report_interval,
manager='quantum.agent.l3_agent.L3NATAgentWithStateReport')
service.launch(server).wait()