20f58fc5ce
This patch adds a new config parameter NATIVE_METADATA_ROUTE to allow users to change metadata route used for native metadata service. The default value is 169.254.169.254/32. This can be used as a work-around for an existing cirros bug (#1607901), where 169.254.169.254/32 is dropped by cirros DHCP client for option 121. By setting NATIVE_METADATA_ROUTE=169.254.169.254/31, it can be accepted by cirros thus allowing metadata requests sent to native metadata proxy. Change-Id: Ibb5b76487284e748a60f75cc713bc7a17c553adb Related-Bug: #1607901
117 lines
5.1 KiB
Python
117 lines
5.1 KiB
Python
# Copyright 2016 VMware, Inc. 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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import logging
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from neutron.callbacks import registry
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from neutron_lib import constants as const
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from oslo_config import cfg
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from vmware_nsx._i18n import _LI
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from vmware_nsx.common import nsx_constants
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from vmware_nsx.common import utils as comm_utils
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from vmware_nsx.nsxlib import v3 as nsxlib
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from vmware_nsx.nsxlib.v3 import client
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from vmware_nsx.nsxlib.v3 import cluster
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from vmware_nsx.nsxlib.v3 import native_dhcp
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from vmware_nsx.nsxlib.v3 import resources
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from vmware_nsx.shell.admin.plugins.common import constants
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from vmware_nsx.shell.admin.plugins.common import formatters
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from vmware_nsx.shell.admin.plugins.common import utils as admin_utils
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from vmware_nsx.shell.admin.plugins.nsxv3.resources import utils
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import vmware_nsx.shell.resources as shell
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LOG = logging.getLogger(__name__)
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neutron_client = utils.NeutronDbClient()
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@admin_utils.output_header
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def list_dhcp_bindings(resource, event, trigger, **kwargs):
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"""List DHCP bindings in Neutron."""
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ports = neutron_client.get_ports()
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comp_ports = [port for port in ports if port['device_owner'].startswith(
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const.DEVICE_OWNER_COMPUTE_PREFIX)]
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LOG.info(formatters.output_formatter(constants.DHCP_BINDING, comp_ports,
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['id', 'mac_address', 'fixed_ips']))
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@admin_utils.output_header
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def nsx_update_dhcp_bindings(resource, event, trigger, **kwargs):
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"""Resync DHCP bindings for NSXv3 CrossHairs."""
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nsx_version = nsxlib.get_version()
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if not comm_utils.is_nsx_version_1_1_0(nsx_version):
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LOG.info(_LI("This utility is not available for NSX version %s"),
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nsx_version)
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return
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cluster_api = cluster.NSXClusteredAPI()
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nsx_client = client.NSX3Client(cluster_api)
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client._set_default_api_cluster(cluster_api)
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port_resource = resources.LogicalPort(nsx_client)
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dhcp_server_resource = resources.LogicalDhcpServer(nsx_client)
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port_bindings = {} # lswitch_id: [(mac, ip, prefix_length), ...]
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server_bindings = {} # lswitch_id: dhcp_server_id
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ports = neutron_client.get_ports()
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for port in ports:
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network_id = port['network_id']
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device_owner = port['device_owner']
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if device_owner == const.DEVICE_OWNER_DHCP:
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# For each DHCP-enabled network, create a logical DHCP server
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# and update the attachment type to DHCP on the corresponding
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# logical port of the Neutron DHCP port.
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subnet_id = port['fixed_ips'][0]['subnet_id']
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subnet = neutron_client.get_subnet(subnet_id)
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network = neutron_client.get_network(port['network_id'])
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if len(port['fixed_ips']) > 1:
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LOG.info(_LI("Network %(network)s has multiple subnets - "
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"only enable native DHCP on subnet %(subnet)s"),
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{'network': port['network_id'], 'subnet': subnet_id})
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server_data = native_dhcp.build_dhcp_server_config(
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network, subnet, port, 'NSX Neutron plugin upgrade')
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dhcp_server = dhcp_server_resource.create(**server_data)
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lswitch_id, lport_id = neutron_client.get_lswitch_and_lport_id(
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port['id'])
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port_resource.update(lport_id, dhcp_server['id'],
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attachment_type=nsx_constants.ATTACHMENT_DHCP)
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server_bindings[lswitch_id] = dhcp_server['id']
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elif device_owner.startswith(const.DEVICE_OWNER_COMPUTE_PREFIX):
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lswitch_id = neutron_client.net_id_to_lswitch_id(network_id)
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bindings = port_bindings.get(lswitch_id, [])
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bindings.append((port['mac_address'],
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port['fixed_ips'][0]['ip_address']))
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port_bindings[lswitch_id] = bindings
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# Populate mac/IP bindings in each logical DHCP server.
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for lswitch_id, bindings in port_bindings.items():
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dhcp_server_id = server_bindings[lswitch_id]
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for (mac, ip) in bindings:
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hostname = 'host-%s' % ip.replace('.', '-')
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options = {'option121': {'static_routes': [
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{'network': '%s' % cfg.CONF.nsx_v3.native_metadata_route,
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'next_hop': ip}]}}
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dhcp_server_resource.create_binding(
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dhcp_server_id, mac, ip, hostname,
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cfg.CONF.nsx_v3.dhcp_lease_time, options)
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registry.subscribe(list_dhcp_bindings,
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constants.DHCP_BINDING,
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shell.Operations.LIST.value)
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registry.subscribe(nsx_update_dhcp_bindings,
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constants.DHCP_BINDING,
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shell.Operations.NSX_UPDATE.value)
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