标签：vlan nova openstack nova-network vconfig
# -*- encoding: utf-8 -*-
#
# Copyright 2012 Red Hat, Inc
#
# Author: Eoghan Glynn <eglynn@redhat.com>
#
# 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.
"""Implementation of Inspector abstraction for libvirt."""
import libvirt
import os,sys,time
import traceback
from lxml import etree
from oslo.config import cfg
from nova.openstack.common import log as logging
from nova import utils
libvirt = None
LOG = logging.getLogger(__name__)
libvirt_opts = [
cfg.StrOpt(‘libvirt_type‘,
default=‘kvm‘,
help=‘Libvirt domain type (valid options are: ‘
‘kvm, lxc, qemu, uml, xen)‘),
cfg.StrOpt(‘libvirt_uri‘,
default=‘‘,
help=‘Override the default libvirt URI ‘
‘(which is dependent on libvirt_type)‘),
cfg.StrOpt(‘network_script_path‘,
default=‘/etc/sysconfig/network-scripts/‘,
help=‘Centos 6.6 system network config path ‘ ),
]
CONF = cfg.CONF
CONF.register_opts(libvirt_opts)
class LibvirtNetwork(object):
per_type_uris = dict(uml=‘uml:///system‘, xen=‘xen:///‘, lxc=‘lxc:///‘)
def __init__(self):
self.uri = self._get_uri()
self.connection = None
def _get_uri(self):
return CONF.libvirt_uri or self.per_type_uris.get(CONF.libvirt_type,
‘qemu:///system‘)
def _get_connection(self):
if not self.connection or not self._test_connection():
global libvirt
if libvirt is None:
libvirt = __import__(‘libvirt‘)
LOG.debug(‘Connecting to libvirt: %s‘, self.uri)
self.connection = libvirt.openReadOnly(self.uri)
return self.connection
def _test_connection(self):
try:
self.connection.getCapabilities()
return True
except libvirt.libvirtError as e:
print ‘*‘ * 100
if (e.get_error_code() == libvirt.VIR_ERR_SYSTEM_ERROR and
e.get_error_domain() in (libvirt.VIR_FROM_REMOTE,
libvirt.VIR_FROM_RPC)):
LOG.debug(‘Connection to libvirt broke‘)
return False
raise
def _lookup_by_name(self, instance_name):
try:
return self._get_connection().lookupByName(instance_name)
except Exception as ex:
if not libvirt or not isinstance(ex, libvirt.libvirtError):
LOG.error(ex)
error_code = ex.get_error_code()
msg = ("Error from libvirt while looking up %(instance_name)s: "
"[Error Code %(error_code)s] "
"%(ex)s" % {‘instance_name‘: instance_name,
‘error_code‘: error_code,
‘ex‘: ex})
LOG.error(msg)
def get_vnic_name(self, instance_name):
domain = self._lookup_by_name(instance_name)
tree = etree.fromstring(domain.XMLDesc(0))
for iface in tree.findall(‘devices/interface‘):
target = iface.find(‘target‘)
if target is not None:
vnic_name = target.get(‘dev‘)
else:
continue
mac = iface.find(‘mac‘)
if mac is not None:
mac_address = mac.get(‘address‘)
else:
continue
fref = iface.find(‘filterref‘)
if fref is not None:
fref = fref.get(‘filter‘)
return vnic_name
#Add william ,Bridge supports multiple vlan technology
def bridge_multiple_vlan(self,instance):
network_info = dict()
try:
new_source_dev = instance[‘hostname‘].split(‘.‘)[-1]
if not new_source_dev:
new_source_dev = ‘br100‘
if ‘vlan‘ not in new_source_dev:
new_source_dev = ‘br100‘
network_info[‘vlan_name‘] = new_source_dev
network_info[‘instances_name‘] = instance[‘name‘]
network_info[‘vnet_name‘] = self.get_vnic_name(instance[‘name‘])
network_info[‘bond_name‘] = os.listdir(‘/proc/net/bonding‘)[0]
network_info[‘bond_dev‘] = ‘%s.%s‘ %(network_info[‘bond_name‘],new_source_dev.split(‘vlan‘)[-1])
network_info[‘vlan_id‘] = new_source_dev.split(‘vlan‘)[-1]
check_result = self.check_bridge_vlan(network_info[‘vlan_name‘],network_info[‘bond_dev‘])
if not check_result:
self.add_bridge_vlan(network_info)
else:
print "%s is exists " % network_info[‘vlan_name‘]
LOG.info("Add william , modify brdige type bridge = %s"% new_source_dev)
except:
print traceback.format_exc()
def add_bridge_vlan(self,network_info):
utils.execute("vconfig" ,"add", network_info[‘bond_name‘], network_info[‘vlan_id‘],run_as_root=True)
utils.execute("ifconfig" , network_info[‘bond_dev‘],"up",run_as_root=True)
utils.execute("brctl" ,"addbr", network_info[‘vlan_name‘],run_as_root=True)
utils.execute("brctl" ,"addif", network_info[‘vlan_name‘],network_info[‘bond_dev‘],run_as_root=True)
utils.execute("ifconfig" , network_info[‘vlan_name‘],"up",run_as_root=True)
utils.execute("brctl" ,"addif", network_info[‘vlan_name‘],network_info[‘vnet_name‘],run_as_root=True)
bond_script = "%s/ifcfg-%s" % (CONF.network_script_path, network_info[‘bond_dev‘])
vlan_script = "%s/ifcfg-%s" % (CONF.network_script_path, network_info[‘vlan_name‘])
fp = open(bond_script , ‘w‘)
fp.write("DEVICE=%s \n" % network_info[‘bond_dev‘])
fp.write("ONBOOT=yes \n")
fp.write("NM_CONTROLLED=no \n")
fp.write("BOOTPROTO=static \n")
fp.write("VLAN=yes \n")
fp.close()
fp = open(vlan_script , ‘w‘)
fp.write("DEVICE=%s \n" % network_info[‘vlan_name‘])
fp.write("BOOTPROTO=static \n")
fp.write("ONBOOT=yes \n")
fp.write("TYPE=Bridge \n")
fp.close()
def check_bridge_vlan(self,vlan_dev,bond_dev):
vlan_list = bond_list = list()
vlan = bond = False
vlan_info = os.popen(" brctl show |grep vlan | awk ‘{print $1}‘ ").readlines()
for i in vlan_info:
vlan_list.append(i.strip())
bond_info = os.popen("ifconfig |grep bond0|awk ‘{print $1}‘").readlines()
for i in bond_info:
bond_list.append(i.strip())
if vlan_dev in vlan_list:
vlan = True
if bond_dev in bond_list:
bond = True
if vlan and bond:
return True
else:
return False
if __name__ == "__main__":
instance = {u‘vm_state‘: u‘building‘, u‘internal_id‘: None, u‘availability_zone‘: u‘nova‘, u‘terminated_at‘: None, u‘ephemeral_gb‘: 100, u‘instance_type_id‘: 26, u‘user_data‘: None, u‘cleaned‘: 0, u‘vm_mode‘: None, u‘deleted_at‘: None, u‘reservation_id‘: u‘r-z2zsdcvl‘, u‘id‘: 299, u‘security_groups‘: [{u‘project_id‘: u‘50fd5d79ab184c399cdc22da78b8a7bc‘, u‘user_id‘: u‘373ddabe004846ebba268d7e88d13e16‘, u‘name‘: u‘default‘, u‘deleted‘: 0, u‘created_at‘: u‘2014-09-30T07:49:38.000000‘, u‘updated_at‘: None, u‘rules‘: [], u‘deleted_at‘: None, u‘id‘: 1, u‘description‘: u‘default‘}], u‘disable_terminate‘: False, u‘root_device_name‘: u‘/dev/vda‘, u‘user_id‘: u‘373ddabe004846ebba268d7e88d13e16‘, u‘uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘default_swap_device‘: None, u‘info_cache‘: {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: u‘2015-04-16T03:36:52.000000‘, u‘network_info‘: u‘[{"ovs_interfaceid": null, "network": {"bridge": "br100", "subnets": [{"ips": [{"meta": {}, "version": 4, "type": "fixed", "floating_ips": [], "address": "192.168.221.164"}], "version": 4, "meta": {"dhcp_server": "192.168.221.11"}, "dns": [{"meta": {}, "version": 4, "type": "dns", "address": "192.168.252.25"}, {"meta": {}, "version": 4, "type": "dns", "address": "192.168.252.24"}], "routes": [], "cidr": "192.168.220.0/19", "gateway": {"meta": {}, "version": 4, "type": "gateway", "address": "192.168.192.1"}}, {"ips": [], "version": null, "meta": {"dhcp_server": "192.168.221.11"}, "dns": [], "routes": [], "cidr": null, "gateway": {"meta": {}, "version": null, "type": "gateway", "address": null}}], "meta": {"tenant_id": "50fd5d79ab184c399cdc22da78b8a7bc", "multi_host": true, "should_create_bridge": true, "should_create_vlan": true, "bridge_interface": "bond0"}, "id": "4a8546f2-3919-445a-9f87-b938491d41a5", "label": "publics"}, "devname": null, "qbh_params": null, "meta": {}, "address": "fa:16:3e:c5:be:93", "type": "bridge", "id": "a7a69211-6aeb-4b54-9a20-803b96df73bf", "qbg_params": null}]‘, u‘deleted_at‘: None, u‘id‘: 299}, u‘hostname‘: u‘gg-esc-web.vlan203‘, u‘launched_on‘: u‘localhost‘, u‘display_description‘: u‘gg-esc-web.vlan201‘, u‘key_data‘: None, u‘deleted‘: 0, u‘scheduled_at‘: u‘2015-04-16T03:36:51.000000‘, u‘power_state‘: 0, u‘default_ephemeral_device‘: None, u‘progress‘: 0, u‘project_id‘: u‘50fd5d79ab184c399cdc22da78b8a7bc‘, u‘launched_at‘: None, u‘config_drive‘: u‘‘, u‘node‘: u‘localhost‘, u‘ramdisk_id‘: u‘‘, u‘access_ip_v6‘: None, u‘access_ip_v4‘: None, u‘kernel_id‘: u‘‘, u‘key_name‘: None, u‘updated_at‘: u‘2015-04-16T03:36:52.727467‘, u‘host‘: u‘localhost‘, u‘display_name‘: u‘gg-esc-web.vlan201‘, u‘system_metadata‘: [{u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘windows‘, u‘key‘: u‘image_os_type‘, u‘deleted_at‘: None, u‘id‘: 4889}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘8192‘, u‘key‘: u‘instance_type_memory_mb‘, u‘deleted_at‘: None, u‘id‘: 4890}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘0‘, u‘key‘: u‘instance_type_swap‘, u‘deleted_at‘: None, u‘id‘: 4891}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: None, u‘key‘: u‘instance_type_vcpu_weight‘, u‘deleted_at‘: None, u‘id‘: 4892}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘60‘, u‘key‘: u‘instance_type_root_gb‘, u‘deleted_at‘: None, u‘id‘: 4893}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘26‘, u‘key‘: u‘instance_type_id‘, u‘deleted_at‘: None, u‘id‘: 4894}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘windows-16-8G-100G‘, u‘key‘: u‘instance_type_name‘, u‘deleted_at‘: None, u‘id‘: 4895}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘100‘, u‘key‘: u‘instance_type_ephemeral_gb‘, u‘deleted_at‘: None, u‘id‘: 4896}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘1‘, u‘key‘: u‘instance_type_rxtx_factor‘, u‘deleted_at‘: None, u‘id‘: 4897}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘qcow2‘, u‘key‘: u‘image_disk_format‘, u‘deleted_at‘: None, u‘id‘: 4898}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘74c9f78a-06d6-432d-8051-4eeecf8ebff7‘, u‘key‘: u‘instance_type_flavorid‘, u‘deleted_at‘: None, u‘id‘: 4899}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘ovf‘, u‘key‘: u‘image_container_format‘, u‘deleted_at‘: None, u‘id‘: 4900}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘16‘, u‘key‘: u‘instance_type_vcpus‘, u‘deleted_at‘: None, u‘id‘: 4901}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘0‘, u‘key‘: u‘image_min_ram‘, u‘deleted_at‘: None, u‘id‘: 4902}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘60‘, u‘key‘: u‘image_min_disk‘, u‘deleted_at‘: None, u‘id‘: 4903}, {u‘instance_uuid‘: u‘c4cf7bc1-72bd-4523-bab0-fdd0f837fb46‘, u‘deleted‘: 0, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘updated_at‘: None, u‘value‘: u‘406c0425-b8d3-4607-beff-8fa529b46b7a‘, u‘key‘: u‘image_base_image_ref‘, u‘deleted_at‘: None, u‘id‘: 4904}], u‘task_state‘: u‘spawning‘, u‘shutdown_terminate‘: False, u‘cell_name‘: None, u‘root_gb‘: 60, u‘locked‘: False, u‘name‘: u‘instance-0000012b‘, u‘created_at‘: u‘2015-04-16T03:36:51.000000‘, u‘locked_by‘: None, u‘launch_index‘: 0, u‘memory_mb‘: 8192, u‘vcpus‘: 16, u‘image_ref‘: u‘406c0425-b8d3-4607-beff-8fa529b46b7a‘, u‘architecture‘: None, u‘auto_disk_config‘: False, u‘os_type‘: u‘windows‘, u‘metadata‘: []}
sc = LibvirtNetwork()
sc.bridge_multiple_vlan(instance)本文出自 “欢迎评论，欢迎点赞” 博客，请务必保留此出处http://swq499809608.blog.51cto.com/797714/1633811
OpenStack nova-network 支持多vlan技术实现片段代码
标签：vlan nova openstack nova-network vconfig
原文地址：http://swq499809608.blog.51cto.com/797714/1633811
