openstack虚拟机ip消失重启网卡hang openstack虚拟机恢复

本次环境为openstack K版本。ceph 版本为0.94.5 

我们的虚拟机都是建立在ceph中的。

备份虚拟机：

打开openstack控制台，点击要备份的虚拟机：

获取虚拟机的id信息：

在控制节点获取，虚拟机对应的ceph中的volume id

[root@contorller ceph]# nova show 1d77b49b-4263-477e-acc8-4242a3a998b3

[root@contorller ceph]# rbd ls volumes | grep 2ccd04fd-3a28-4d40-b226-cab0af159257
 volume-2ccd04fd-3a28-4d40-b226-cab0af159257

导出虚拟机到一个位置

[root@contorller ~]# rbd export -p volumes volume-2ccd04fd-3a28-4d40-b226-cab0af159257 /tmp/vm1.bk
 Exporting image: 100% complete...done.
 [root@contorller ~]# ll /tmp/vm1.bk -h
 -rw-r--r--. 1 root root 1.0G Jun 26 10:39 /tmp/vm1

可以看到虚拟机已经导出了，并且大小也是1G

============导入========

下面我们来做下导入，我们首先把刚刚备份的虚拟机删除

[root@contorller ~]# nova list
 +--------------------------------------+------+--------+------------+-------------+------------------------------+
 | ID                                   | Name | Status | Task State | Power State | Networks                     |
 +--------------------------------------+------+--------+------------+-------------+------------------------------+
 | 1d77b49b-4263-477e-acc8-4242a3a998b3 | 11   | ACTIVE | -          | Running     | net=10.0.0.7                 |
 | 17e0220e-e9b5-4b6a-8001-6ce84c7b1385 | vm1  | ACTIVE | -          | Running     | net=10.0.0.3, 192.168.253.43 |
 +--------------------------------------+------+--------+------------+-------------+------------------------------+
 [root@contorller ~]# nova delete 1d77b49b-4263-477e-acc8-4242a3a998b3
 Request to delete server 1d77b49b-4263-477e-acc8-4242a3a998b3 has been accepted.
 [root@contorller ~]# nova list
 +--------------------------------------+------+--------+------------+-------------+------------------------------+
 | ID                                   | Name | Status | Task State | Power State | Networks                     |
 +--------------------------------------+------+--------+------------+-------------+------------------------------+
 | 17e0220e-e9b5-4b6a-8001-6ce84c7b1385 | vm1  | ACTIVE | -          | Running     | net=10.0.0.3, 192.168.253.43 |
 +--------------------------------------+------+--------+------------+-------------+------------------------------+

ok,已经把虚拟机删除了。此我们需要创建一个同等规格的虚拟机。名为‘Erick’

使用同样的方法，获取虚拟机的id、在ceph中的volume对应的id

[root@contorller ~]# nova show 362151d7-84f7-4043-a723-a852e48922a7
 +--------------------------------------+----------------------------------------------------------+
 | Property                             | Value                                                    |
 +--------------------------------------+----------------------------------------------------------+
 | OS-DCF:diskConfig                    | AUTO                                                     |
 | OS-EXT-AZ:availability_zone          | nova                                                     |
 | OS-EXT-SRV-ATTR:host                 | compute                                                  |
 | OS-EXT-SRV-ATTR:hypervisor_hostname  | compute                                                  |
 | OS-EXT-SRV-ATTR:instance_name        | instance-0000000c                                        |
 | OS-EXT-STS:power_state               | 1                                                        |
 | OS-EXT-STS:task_state                | -                                                        |
 | OS-EXT-STS:vm_state                  | active                                                   |
 | OS-SRV-USG:launched_at               | 2016-06-26T14:45:35.000000                               |
 | OS-SRV-USG:terminated_at             | -                                                        |
 | accessIPv4                           |                                                          |
 | accessIPv6                           |                                                          |
 | config_drive                         |                                                          |
 | created                              | 2016-06-26T14:45:04Z                                     |
 | flavor                               | m1.tiny (1)                                              |
 | hostId                               | e111131d0ba1d28eaf1195847c1538b8e7b791cbdd6f7666083ab383 |
 | id                                   | 362151d7-84f7-4043-a723-a852e48922a7                     |
 | image                                | Attempt to boot from volume - no image supplied          |
 | key_name                             | -                                                        |
 | metadata                             | {}                                                       |
 | name                                 | Erick                                                    |
 | net network                          | 10.0.0.9                                                 |
cc9c8141-c70c-4a72-91d5-5fa9e15e21d8"}]         |
 | progress                             | 0                                                        |
 | security_groups                      | default                                                  |
 | status                               | ACTIVE                                                   |
 | tenant_id                            | dce7915317f14e6aacad0b6ef84c4483                         |
 | updated                              | 2016-06-26T14:45:29Z                                     |
 | user_id                              | 9d20f58520ad43658dceda03cf4e266c                         |
 +--------------------------------------+----------------------------------------------------------+
 [root@contorller ~]# rbd ls volumes | grep cc9c8141-c70c-4a72-91d5-5fa9e15e21d8
volume-cc9c8141-c70c-4a72-91d5-5fa9e15e21d8

 下面对虚拟机进行关机（必须关机），并删除pool中的内容
 [root@contorller ~]# rbd rm -p volumes volume-cc9c8141-c70c-4a72-91d5-5fa9e15e21d8
 Removing image: 100% complete...done.
 把刚刚备份的虚拟机上传到这个虚拟机中
--image-format 2  import -p   volumes /tmp/vm1.bk volume-cc9c8141-c70c-4a72-91d5-5fa9e15e21d8
 Importing image: 100% complete...

##--image-format 2  此选项必须加，否则无法对虚拟机进行克隆！

还原完成！

登入虚拟机查看有无异常

虚拟机可以上网！在此还原完成！