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1、查找你要修改ip地址的网卡id，本文修改ip地址为192.168.111.11的网卡：
[root@node-1 ~]# neutron port-list
2、允许ip地址为192.168.111.12通过
[root@node-1 ~]# neutron port-update 83cfe62e-b9bc-4b77-8938-10d8f45d836c --allowed-address-pairs type=dict list=true ip_address=192.168.111.12
3、进入mysql数据库，修改数据
mysql> use neutron;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> select * from ipallocations where port_id='83cfe62e-b9bc-4b77-8938-10d8f45d836c';该port_id是之前查找的网卡id+--------------------------------------+----------------+--------------------------------------+--------------------------------------+| port_id| ip_address| subnet_id | network_id |+--------------------------------------+----------------+--------------------------------------+--------------------------------------+| 83cfe62e-b9bc-4b77-8938-10d8f45d836c | 192.168.111.11 | 17c87ec0-a4f6-4d55-9947-2e8c9c7f1b65 | 28fcbb79-629b-4031-9323-b6acfa620aac |+--------------------------------------+----------------+--------------------------------------+--------------------------------------+1 row in set (0.00 sec)
编辑port_id为 83cfe62e-b9bc-4b77-8938-10d8f45d836c 的ip地址为192.168.111.12
mysql> update ipallocations set ip_address='192.168.111.12' where port_id='83cfe62e-b9bc-4b77-8938-10d8f45d836c';Query OK, 1 row affected (0.02 sec)Rows matched: 1 Changed: 1 Warnings: 0
查看一下port_id为83cfe62e-b9bc-4b77-8938-10d8f45d836c的地址是否变更了：
4、进入虚拟机修改ip地址就可以和外网通信了
地址：/openstack-vm-ip.html
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