74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
# 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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import sys
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from neutron_lib.utils import helpers
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from oslo_config import cfg
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from oslo_log import log as logging
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from neutron.conf.agent import common as config
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from neutron.plugins.ml2.drivers.linuxbridge.agent \
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import linuxbridge_neutron_agent
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LOG = logging.getLogger(__name__)
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def remove_empty_bridges():
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try:
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interface_mappings = helpers.parse_mappings(
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cfg.CONF.LINUX_BRIDGE.physical_interface_mappings)
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except ValueError as e:
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LOG.error("Parsing physical_interface_mappings failed: %s.", e)
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sys.exit(1)
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LOG.info("Interface mappings: %s.", interface_mappings)
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try:
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bridge_mappings = helpers.parse_mappings(
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cfg.CONF.LINUX_BRIDGE.bridge_mappings)
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except ValueError as e:
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LOG.error("Parsing bridge_mappings failed: %s.", e)
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sys.exit(1)
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LOG.info("Bridge mappings: %s.", bridge_mappings)
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lb_manager = linuxbridge_neutron_agent.LinuxBridgeManager(
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bridge_mappings, interface_mappings)
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bridge_names = lb_manager.get_deletable_bridges()
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for bridge_name in bridge_names:
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if lb_manager.get_tap_devices_count(bridge_name):
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continue
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try:
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lb_manager.delete_bridge(bridge_name)
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LOG.info("Linux bridge %s deleted", bridge_name)
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except RuntimeError:
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LOG.exception("Linux bridge %s delete failed", bridge_name)
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LOG.info("Linux bridge cleanup completed successfully")
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def main():
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"""Main method for cleaning up empty linux bridges.
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This tool deletes every empty linux bridge managed by linuxbridge agent
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(brq.* linux bridges) except thes ones defined using bridge_mappings option
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in section LINUX_BRIDGE (created by deployers).
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This tool should not be called during an instance create, migrate, etc. as
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it can delete a linux bridge about to be used by nova.
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"""
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cfg.CONF(sys.argv[1:])
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config.setup_logging()
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config.setup_privsep()
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remove_empty_bridges()
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