（五）openstack上传/下载/转换镜像

1、执行环境变量

. admin-openrc.sh

2、下载镜像

wget http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1907.qcow2
//可以替换为国内镜像
wget http://mirrors.nju.edu.cn/centos-cloud/centos/7/images/CentOS-7-x86_64-GenericCloud-1907.qcow2
           

查询对应版本

3、上传镜像前修改密码

[email protected]:~/image# virt-customize -a CentOS-7-x86_64-GenericCloud-1907.qcow2 --root-password password:123456
[   0.0] Examining the guest ...
[  28.3] Setting a random seed
[  28.3] Setting passwords
[  29.8] Finishing off
           

4、执行上传

方法1：上传镜像

glance image-create --name "centos7.7" --file CentOS-7-x86_64-GenericCloud-1907.qcow2 \
--disk-format qcow2 --container-format bare  --visibility public --progress
[=============================>] 100%
+------------------+----------------------------------------------------------------------------------+
| Property         | Value                                                                            |
+------------------+----------------------------------------------------------------------------------+
| checksum         | 160aa274e7a69f2edb50e2d89f54270b                                                 |
| container_format | bare                                                                             |
| created_at       | 2021-01-28T04:57:11Z                                                             |
| disk_format      | qcow2                                                                            |
| id               | 19050d6c-f920-483e-8581-bc71eb9387b3                                             |
| min_disk         | 0                                                                                |
| min_ram          | 0                                                                                |
| name             | centos7.7                                                                        |
| os_hash_algo     | sha512                                                                           |
| os_hash_value    | a1062533d0317b4c0b64cf0fd08cbfa48c6df6fbd513abd1f12b1cd9726fe01113d9221e525fe0c0 |
|                  | f265f5448849fa07c46a95b687dcf7d51342431f05ede881                                 |
| os_hidden        | False                                                                            |
| owner            | e89bc3f0c7c34deeb36b7b5b8aed0dac                                                 |
| protected        | False                                                                            |
| size             | 942407680                                                                        |
| status           | active                                                                           |
| tags             | []                                                                               |
| updated_at       | 2021-01-28T04:57:16Z                                                             |
| virtual_size     | Not available                                                                    |
| visibility       | public                                                                           |
+------------------+----------------------------------------------------------------------------------+
           

方法二 上传镜像

openstack image create "CentOS7.7-image" \
  --file CentOS-7-x86_64-GenericCloud-1907.qcow2 \
  --disk-format qcow2 --container-format bare \
  --public
           

5、创建实例

centos官方提供openstack镜像，默认用户是centos

二、下载镜像

# openstack image list
+--------------------------------------+---------------+--------+
| ID                                   | Name          | Status |
+--------------------------------------+---------------+--------+
| 6dc3dbbe-080a-4f81-9c39-f5faba41f2b1 | Centos7.7     | active |
| ea920ae1-9dfd-4b5b-83c9-9673535ecb82 | centos7.7_raw | active |
+--------------------------------------+---------------+--------+

#glance image-download --file ./centos7.7.1908.raw ea920ae1-9dfd-4b5b-83c9-9673535ecb82

           

二、将raw格式镜像转换为vmdk格式镜像

下载的是raw原始虚拟机镜像文件，如果要查看raw文件中的内容可以先把raw文件转换为vmdk文件，然后再用vmware虚拟机打开vmdk文件。

raw文件转化为vmdk文件需要qemu-img命令

# qemu-img convert -f raw centos7.7.1908.raw -O vmdk centos7.7.1908.vmdk
#ls
centos7.7.1908.raw  centos7.7.1908.vmdk
           

支持的格式有：vvfat vpc vmdk vhdx vdi ssh sheepdog rbd raw host_cdrom host_floppy host_device file qed qcow2 qcow parallels nbd iscsi gluster dmg tftp ftps ftp https http cloop bochs blkverify blkdebug