OpenStack nova-network 支持多vlan技术实现片段代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 #-*-encoding:utf-8-*- # #Copyright2012RedHat,Inc # #Author:EoghanGlynn<eglynn@redhat.com> # #LicensedundertheApacheLicense,Version2.0(the"License");youmay #notusethisfileexceptincompliancewiththeLicense.Youmayobtain #acopyoftheLicenseat # #http://www.apache.org/licenses/LICENSE-2.0 # #Unlessrequiredbyapplicablelaworagreedtoinwriting,software #distributedundertheLicenseisdistributedonan"ASIS"BASIS,WITHOUT #WARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied.Seethe #Licenseforthespecificlanguagegoverningpermissionsandlimitations #undertheLicense. """ImplementationofInspectorabstractionforlibvirt.""" import libvirt import os,sys,time import traceback from lxml import etree from oslo.config import cfg from nova.openstack.common import logaslogging from nova import utils libvirt = None LOG = logging.getLogger(__name__) libvirt_opts = [ cfg.StrOpt( 'libvirt_type' , default = 'kvm' , help = 'Libvirtdomaintype(validoptionsare:' 'kvm,lxc,qemu,uml,xen)' ), cfg.StrOpt( 'libvirt_uri' , default = '', help = 'OverridethedefaultlibvirtURI' '(whichisdependentonlibvirt_type)' ), cfg.StrOpt( 'network_script_path' , default = '/etc/sysconfig/network-scripts/' , help = 'Centos6.6systemnetworkconfigpath' ), ] 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( 'Connectingtolibvirt:%s' , self .uri) self .connection = libvirt.openReadOnly( self .uri) return self .connection def _test_connection( self ): try : self .connection.getCapabilities() return True except libvirt.libvirtErrorase: 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( 'Connectiontolibvirtbroke' ) return False raise def _lookup_by_name( self ,instance_name): try : return self ._get_connection().lookupByName(instance_name) except Exceptionasex: if not libvirt or not isinstance (ex,libvirt.libvirtError): LOG.error(ex) error_code = ex.get_error_code() msg = ( "Errorfromlibvirtwhilelookingup%(instance_name)s:" "[ErrorCode%(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 #Addwilliam,Bridgesupportsmultiplevlantechnology 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 : LOG.info( "Addwilliam,%sisexists,soisnotcreate" % network_info[ 'vlan_name' ]) except : LOG.error(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 ) LOG.info( "Addwilliam,utils.exeuctevconfigadd%s%s" % (network_info[ 'bond_name' ],network_info[ 'vlan_id' ])) utils.execute( "ifconfig" ,network_info[ 'bond_dev' ], "up" ,run_as_root = True ) LOG.info( "Addwilliam,utils.executeifconfig%sup" % (network_info[ 'bond_dev' ])) utils.execute( "brctl" , "addbr" ,network_info[ 'vlan_name' ],run_as_root = True ) LOG.info( "Addwilliam,utils.executebrctladdbr%s" % (network_info[ 'vlan_name' ])) utils.execute( "brctl" , "addif" ,network_info[ 'vlan_name' ],network_info[ 'bond_dev' ],run_as_root = True ) LOG.info( "Addwilliam,utils.executebrctladdif%s%s" % (network_info[ 'vlan_name' ],network_info[ 'bond_dev' ])) utils.execute( "ifconfig" ,network_info[ 'vlan_name' ], "up" ,run_as_root = True ) LOG.info("") #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' ]) utils.execute( "chmod" , "777" ,CONF.network_script_path,run_as_root = True ) 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() utils.execute( "chmod" , "755" ,CONF.network_script_path,run_as_root = True ) def check_bridge_vlan( self ,vlan_dev,bond_dev): vlan_list = bond_list = list () vlan = bond = False vlan_info = os.popen( "brctlshow|grepvlan|awk'{print$1}'" ).readlines() for i in vlan_info: vlan_list.append(i.strip()) bond_info = os.popen( "ifconfig|grepbond0|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) 本文转自 swq499809608 51CTO博客，原文链接:http://blog.51cto.com/swq499809608/1633811
