1.glance 功能

    对外提供image的管理功能

2.glance架构

   api : REST API,提供对外调用接口

   registry: 数据库管理逻辑处理

   backen:image的实际存放位置

3.config: /etc/glance/

4.log:/var/log/glance

5.数据库:

mysql

use glance;

show tables;

MariaDB [(none)]> use glance;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [glance]> show tables
    -> ;
+----------------------------------+
| Tables_in_glance                 |
+----------------------------------+
| artifact_blob_locations          |
| artifact_blobs                   |
| artifact_dependencies            |
| artifact_properties              |
| artifact_tags                    |
| artifacts                        |
| image_locations                  |
| image_members                    |
| image_properties                 |
| image_tags                       |
| images                           |
| metadef_namespace_resource_types |
| metadef_namespaces               |
| metadef_objects                  |
| metadef_properties               |
| metadef_resource_types           |
| metadef_tags                     |
| migrate_version                  |
| task_info                        |
| tasks                            |
+----------------------------------+

6.backend配置：

7image location: /var/lib/glance/images  (configured in /etc/glance/glance-api.log)

openstack-glance