openstack虚拟机迁移-01虚机冷迁移

openstack虚机冷迁移

迁移前主机所在节点

#(1)查看正在运行的虚拟机
[root@controller1 ~]# openstack server list
+--------------------------------------+-------------+--------+----------------------+--------+--------+
| ID                                   | Name        | Status | Networks             | Image  | Flavor |
+--------------------------------------+-------------+--------+----------------------+--------+--------+
| b4941301-4227-47c9-a591-a1d8c628f542 | openstack02 | ACTIVE | vm-ext=192.168.1.114 | cirror | cirror |
| 6cfdc73c-31df-4485-b043-494c61111cc6 | openstack01 | ACTIVE | vm-ext=192.168.1.110 | cirror | cirror |
+--------------------------------------+-------------+--------+----------------------+--------+--------+
#(2)关闭需要迁移的虚拟机，记录对应的ID
[root@controller1 ~]# openstack server stop b4941301-4227-47c9-a591-a1d8c628f542 
[root@controller1 ~]# openstack server list
+--------------------------------------+-------------+---------+----------------------+--------+--------+
| ID                                   | Name        | Status  | Networks             | Image  | Flavor |
+--------------------------------------+-------------+---------+----------------------+--------+--------+
| b4941301-4227-47c9-a591-a1d8c628f542 | openstack02 | SHUTOFF | vm-ext=192.168.1.114 | cirror | cirror |
| 6cfdc73c-31df-4485-b043-494c61111cc6 | openstack01 | ACTIVE  | vm-ext=192.168.1.110 | cirror | cirror |
+--------------------------------------+-------------+---------+----------------------+--------+--------+
[root@controller1 ~]# 

#(3)拷贝openstack02对应的磁盘文件到目的主机(即compute1节点)
[root@controller1 ~]# cd /var/lib/nova/instances/
[root@controller1 instances]# ls
b4941301-4227-47c9-a591-a1d8c628f542  _base  compute_nodes  locks
#拷贝文件
[root@controller1 instances]# scp -r b4941301-4227-47c9-a591-a1d8c628f542 compute1:/var/lib/nova/instances/
#(4)在目的主机修改权限，属主属组修改为nova
[root@compute1 instances]# ls
6cfdc73c-31df-4485-b043-494c61111cc6  b4941301-4227-47c9-a591-a1d8c628f542  _base  compute_nodes  locks
[root@compute1 instances]# chown -R nova:nova b4941301-4227-47c9-a591-a1d8c628f542/
#(5)修改数据库中的instances相关内容
[root@controller1 instances]# mysql -uroot -p
Enter password: xxxxxx
#(6)修改instances表中的内容
MariaDB [(none)]> use nova;
Database changed
MariaDB [nova]> update instances set host='compute1', node='compute1' where uuid='b4941301-4227-47c9-a591-a1d8c628f542';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0
MariaDB [nova]> quit
[root@controller1 instances]# 
#注：其中的UUID为需要迁移的虚拟机的ID

#(7)查看虚拟机所在的节点是否变化
[root@controller1 instances]# nova show b4941301-4227-47c9-a591-a1d8c628f542
+--------------------------------------+----------------------------------------------------------+
| Property                             | Value                                                    |
+--------------------------------------+----------------------------------------------------------+
| OS-DCF:diskConfig                    | AUTO                                                     |
| OS-EXT-AZ:availability_zone          | nova                                                     |
| OS-EXT-SRV-ATTR:host                 | #compute1                                                 |
| OS-EXT-SRV-ATTR:hostname             | #openstack02                                              |
| OS-EXT-SRV-ATTR:hypervisor_hostname  | #compute1                                                 |
| OS-EXT-SRV-ATTR:instance_name        | instance-00000004                                        |
| OS-EXT-SRV-ATTR:kernel_id            |                                                          |
| OS-EXT-SRV-ATTR:launch_index         | 0                         

#(8)启动虚拟机
[root@controller1 instances]# openstack server list
+--------------------------------------+-------------+---------+----------------------+--------+--------+
| ID                                   | Name        | Status  | Networks             | Image  | Flavor |
+--------------------------------------+-------------+---------+----------------------+--------+--------+
| b4941301-4227-47c9-a591-a1d8c628f542 | openstack02 | #SHUTOFF | vm-ext=192.168.1.114 | cirror | cirror |
| 6cfdc73c-31df-4485-b043-494c61111cc6 | openstack01 | ACTIVE  | vm-ext=192.168.1.110 | cirror | cirror |
+--------------------------------------+-------------+---------+----------------------+--------+--------+
[root@controller1 instances]# openstack server start openstack02
[root@controller1 instances]# openstack server list
+--------------------------------------+-------------+--------+----------------------+--------+--------+
| ID                                   | Name        | Status | Networks             | Image  | Flavor |
+--------------------------------------+-------------+--------+----------------------+--------+--------+
| b4941301-4227-47c9-a591-a1d8c628f542 | openstack02 | #ACTIVE | vm-ext=192.168.1.114 | cirror | cirror |
| 6cfdc73c-31df-4485-b043-494c61111cc6 | openstack01 | ACTIVE | vm-ext=192.168.1.110 | cirror | cirror |
+--------------------------------------+-------------+--------+----------------------+--------+--------+

(9)平台中查看是否迁移完成

(10)平台中查看是否迁移成功，虚拟机是否正常运行