111 lines
3.8 KiB
Python
111 lines
3.8 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
|
|
# 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.
|
|
|
|
from oslo.config import cfg
|
|
|
|
from neutron.agent.common import config as agent_config
|
|
from neutron.agent import l3_agent
|
|
from neutron.agent.linux import interface
|
|
from neutron.agent.linux import ip_lib
|
|
from neutron.agent.linux import ovs_lib
|
|
from neutron.common import config
|
|
from neutron.openstack.common import log as logging
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def setup_conf():
|
|
"""Setup the cfg for the clean up utility.
|
|
|
|
Use separate setup_conf for the utility because there are many options
|
|
from the main config that do not apply during clean-up.
|
|
"""
|
|
opts = [
|
|
cfg.BoolOpt('ovs_all_ports',
|
|
default=False,
|
|
help=_('True to delete all ports on all the OpenvSwitch '
|
|
'bridges. False to delete ports created by '
|
|
'Neutron on integration and external network '
|
|
'bridges.'))
|
|
]
|
|
|
|
conf = cfg.CONF
|
|
conf.register_cli_opts(opts)
|
|
conf.register_opts(l3_agent.L3NATAgent.OPTS)
|
|
conf.register_opts(interface.OPTS)
|
|
agent_config.register_interface_driver_opts_helper(conf)
|
|
agent_config.register_use_namespaces_opts_helper(conf)
|
|
agent_config.register_root_helper(conf)
|
|
return conf
|
|
|
|
|
|
def collect_neutron_ports(bridges, root_helper):
|
|
"""Collect ports created by Neutron from OVS."""
|
|
ports = []
|
|
for bridge in bridges:
|
|
ovs = ovs_lib.OVSBridge(bridge, root_helper)
|
|
ports += [port.port_name for port in ovs.get_vif_ports()]
|
|
return ports
|
|
|
|
|
|
def delete_neutron_ports(ports, root_helper):
|
|
"""Delete non-internal ports created by Neutron
|
|
|
|
Non-internal OVS ports need to be removed manually.
|
|
"""
|
|
for port in ports:
|
|
if ip_lib.device_exists(port):
|
|
device = ip_lib.IPDevice(port, root_helper)
|
|
device.link.delete()
|
|
LOG.info(_("Delete %s"), port)
|
|
|
|
|
|
def main():
|
|
"""Main method for cleaning up OVS bridges.
|
|
|
|
The utility cleans up the integration bridges used by Neutron.
|
|
"""
|
|
|
|
conf = setup_conf()
|
|
conf()
|
|
config.setup_logging(conf)
|
|
|
|
configuration_bridges = set([conf.ovs_integration_bridge,
|
|
conf.external_network_bridge])
|
|
ovs_bridges = set(ovs_lib.get_bridges(conf.AGENT.root_helper))
|
|
available_configuration_bridges = configuration_bridges & ovs_bridges
|
|
|
|
if conf.ovs_all_ports:
|
|
bridges = ovs_bridges
|
|
else:
|
|
bridges = available_configuration_bridges
|
|
|
|
# Collect existing ports created by Neutron on configuration bridges.
|
|
# After deleting ports from OVS bridges, we cannot determine which
|
|
# ports were created by Neutron, so port information is collected now.
|
|
ports = collect_neutron_ports(available_configuration_bridges,
|
|
conf.AGENT.root_helper)
|
|
|
|
for bridge in bridges:
|
|
LOG.info(_("Cleaning %s"), bridge)
|
|
ovs = ovs_lib.OVSBridge(bridge, conf.AGENT.root_helper)
|
|
ovs.delete_ports(all_ports=conf.ovs_all_ports)
|
|
|
|
# Remove remaining ports created by Neutron (usually veth pair)
|
|
delete_neutron_ports(ports, conf.AGENT.root_helper)
|
|
|
|
LOG.info(_("OVS cleanup completed successfully"))
|