111 lines
3.7 KiB
Python
111 lines
3.7 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2012 OpenStack Foundation.
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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 quantum.agent.common import config as agent_config
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from quantum.agent import l3_agent
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from quantum.agent.linux import interface
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from quantum.agent.linux import ip_lib
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from quantum.agent.linux import ovs_lib
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from quantum.common import config
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from quantum.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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def setup_conf():
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"""Setup the cfg for the clean up utility.
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Use separate setup_conf for the utility because there are many options
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from the main config that do not apply during clean-up.
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"""
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opts = [
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cfg.BoolOpt('ovs_all_ports',
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default=False,
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help=_('True to delete all ports on all the OpenvSwitch '
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'bridges. False to delete ports created by '
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'Quantum on integration and external network '
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'bridges.'))
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]
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conf = cfg.CONF
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conf.register_cli_opts(opts)
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conf.register_opts(l3_agent.L3NATAgent.OPTS)
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conf.register_opts(interface.OPTS)
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agent_config.register_root_helper(conf)
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return conf
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def collect_quantum_ports(bridges, root_helper):
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"""Collect ports created by Quantum from OVS"""
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ports = []
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for bridge in bridges:
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ovs = ovs_lib.OVSBridge(bridge, root_helper)
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ports += [port.port_name for port in ovs.get_vif_ports()]
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return ports
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def delete_quantum_ports(ports, root_helper):
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"""Delete non-internal ports created by Quantum
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Non-internal OVS ports need to be removed manually.
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"""
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for port in ports:
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if ip_lib.device_exists(port):
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device = ip_lib.IPDevice(port, root_helper)
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device.link.delete()
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LOG.info(_("Delete %s"), port)
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def main():
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"""Main method for cleaning up OVS bridges.
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The utility cleans up the integration bridges used by Quantum.
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"""
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conf = setup_conf()
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conf()
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config.setup_logging(conf)
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configuration_bridges = set([conf.ovs_integration_bridge,
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conf.external_network_bridge])
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ovs_bridges = set(ovs_lib.get_bridges(conf.AGENT.root_helper))
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available_configuration_bridges = configuration_bridges & ovs_bridges
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if conf.ovs_all_ports:
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bridges = ovs_bridges
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else:
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bridges = available_configuration_bridges
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# Collect existing ports created by Quantum on configuration bridges.
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# After deleting ports from OVS bridges, we cannot determine which
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# ports were created by Quantum, so port information is collected now.
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ports = collect_quantum_ports(available_configuration_bridges,
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conf.AGENT.root_helper)
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for bridge in bridges:
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LOG.info(_("Cleaning %s"), bridge)
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ovs = ovs_lib.OVSBridge(bridge, conf.AGENT.root_helper)
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ovs.delete_ports(all_ports=conf.ovs_all_ports)
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# Remove remaining ports created by Quantum (usually veth pair)
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delete_quantum_ports(ports, conf.AGENT.root_helper)
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LOG.info(_("OVS cleanup completed successfully"))
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