第三张-镜像服务Glance

镜像服务 (glance) 允许用户发现、注册和获取虚拟机镜像。它提供了一个 REST API，允许您查询虚拟机镜像的 metadata 并获取一个现存的镜像。您可以将虚拟机镜像存储到各种位置，从简单的文件系统到对象存储系统—-例如 OpenStack 对象存储, 并通过镜像服务使用。

Glance-api：接受云系统镜像的创建，删除，读取请求（监听端口9292）

Glance-Registry：云系统的镜像注册服务（主要用于mysql交互监听端口：9191）

镜像默存储目录:/var/lib/glance/images/

第一步创建数据库，第一章有写

第二步创建用户：第二章有写

创建``glance``服务实体：

[root@openstack-1 ~]# source admin-openstack 
[root@openstack-1 ~]# openstack service create --name glance \
>   --description "OpenStack Image" image
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image                  |
| enabled     | True                             |
| id          | a4d3bef656fb48ea886932f091222b34 |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

创建镜像服务的 API 端点：

[root@openstack-1 ~]# openstack endpoint create --region RegionOne \
>   image public http://192.168.10.131:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | ba565a550f4b43548328ef11bbdfcabc |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | a4d3bef656fb48ea886932f091222b34 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://192.168.10.131:9292       |
+--------------+----------------------------------+
[root@openstack-1 ~]# openstack endpoint create --region RegionOne \
>   image internal http://192.168.10.131:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 4eb1d2877789495e9bf2cf35b0b0a7b3 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | a4d3bef656fb48ea886932f091222b34 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://192.168.10.131:9292       |
+--------------+----------------------------------+
[root@openstack-1 ~]# openstack endpoint create --region RegionOne \
>   image admin http://192.168.10.131:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | f33fc9f9c0054c8388f0bb959114cb5a |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | a4d3bef656fb48ea886932f091222b34 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://192.168.10.131:9292       |
+--------------+----------------------------------+

安装并配置组件

安装软件包：

[root@openstack-1 ~]# yum install openstack-glance

编辑文件 /etc/glance/glance-api.conf 并完成如下动作：

  • 在 [database] 部分，配置数据库访问：

connection = mysql+pymysql://glance:glance@192.168.10.172/glance

在 [keystone_authtoken] 和 [paste_deploy] 部分，配置认证服务访问：

[keystone_authtoken]
auth_uri = http://192.168.10.131:5000
auth_url = http://192.168.10.131:35357
memcached_servers = 192.168.10.131:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

[paste_deploy]
flavor = keystone

在 [glance_store] 部分，配置本地文件系统存储和镜像文件位置：

stores = file,http
default_store = file
filesystem_store_datadir = /var/lib/glance/images/

编辑文件 ``/etc/glance/glance-registry.conf``并完成如下动作：

  • 在 [database] 部分，配置数据库访问：

connection = mysql+pymysql://glance:glance@192.168.10.172/glance

在 [keystone_authtoken] 和 [paste_deploy] 部分，配置认证服务访问：

[keystone_authtoken]
auth_uri = http://192.168.10.131:5000
auth_url = http://192.168.10.131:35357
memcached_servers = 192.168.10.131:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

[paste_deploy]
flavor = keystone

写入镜像服务数据库：

[root@openstack-1 ~]# su -s /bin/sh -c "glance-manage db_sync" glance
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:1336: OsloDBDeprecationWarning: EngineFacade is deprecated; please use oslo_db.sqlalchemy.enginefacade
  expire_on_commit=expire_on_commit, _conf=conf)
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade  -> liberty, liberty initial
INFO  [alembic.runtime.migration] Running upgrade liberty -> mitaka01, add index on created_at and updated_at columns of 'images' table
INFO  [alembic.runtime.migration] Running upgrade mitaka01 -> mitaka02, update metadef os_nova_server
INFO  [alembic.runtime.migration] Running upgrade mitaka02 -> ocata_expand01, add visibility to images
INFO  [alembic.runtime.migration] Running upgrade ocata_expand01 -> pike_expand01, empty expand for symmetry with pike_contract01
INFO  [alembic.runtime.migration] Running upgrade pike_expand01 -> queens_expand01
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
Upgraded database to: queens_expand01, current revision(s): queens_expand01
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
Database migration is up to date. No migration needed.
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade mitaka02 -> ocata_contract01, remove is_public from images
INFO  [alembic.runtime.migration] Running upgrade ocata_contract01 -> pike_contract01, drop glare artifacts tables
INFO  [alembic.runtime.migration] Running upgrade pike_contract01 -> queens_contract01
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
Upgraded database to: queens_contract01, current revision(s): queens_contract01
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
Database is synced successfully.

验证操作：

[root@openstack-1 ~]# mysql -h 192.168.10.172 -uglance -pglance -e "use glance;show tables"
+----------------------------------+
| Tables_in_glance                 |
+----------------------------------+
| alembic_version                  |
| 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                            |
+----------------------------------+

启动镜像服务、配置他们随机启动：

[root@openstack-1 ~]# systemctl enable openstack-glance-api.service   openstack-glance-registry.service
[root@openstack-1 ~]# systemctl start openstack-glance-api.service   openstack-glance-registry.service
[root@openstack-1 ~]# systemctl status openstack-glance-api.service   openstack-glance-registry.service

配置文件对比：

[root@openstack-1 ~]# grep ^[a-z] /etc/glance/glance-api.conf 
connection = mysql+pymysql://glance:glance@192.168.10.172/glance
stores = file,http
default_store = file
filesystem_store_datadir = /var/lib/glance/images
auth_uri = http://192.168.10.131:5000
auth_url = http://192.168.10.131:35357
memcached_servers = 192.168.10.131:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance
flavor = keystone
[root@openstack-1 ~]# grep ^[a-z] /etc/glance/glance-registry.conf 
connection = mysql+pymysql://glance:glance@192.168.10.172/glance
auth_uri = http://192.168.10.131:5000
auth_url = http://192.168.10.131:35357
memcached_servers = 192.168.10.131:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance
flavor = keystone
View Code

验证操作

获得 admin 凭证来获取只有管理员能执行的命令的访问权限：

[root@openstack-1 ~]# source admin-openstack

下载源镜像：

[root@openstack-1 ~]# wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

使用 QCOW2 磁盘格式， bare 容器格式上传镜像到镜像服务并设置公共可见，这样所有的项目都可以访问它：

[root@openstack-1 ~]# openstack image create "cirros" \
>   --file cirros-0.3.4-x86_64-disk.img \
>   --disk-format qcow2 --container-format bare \
>   --public
+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | ee1eca47dc88f4879d8a229cc70a07c6                     |
| container_format | bare                                                 |
| created_at       | 2018-09-11T03:00:43Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/15885367-e9a0-470d-a94c-881244594a80/file |
| id               | 15885367-e9a0-470d-a94c-881244594a80                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | cirros                                               |
| owner            | 7cdfaafe2cc1430e952da1fbabbe5d44                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 13287936                                             |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2018-09-11T03:00:43Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+

确认镜像的上传并验证属性：

[root@openstack-1 ~]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| 15885367-e9a0-470d-a94c-881244594a80 | cirros | active |
+--------------------------------------+--------+--------+

 

posted @ 2018-09-11 14:12  闫世成  阅读(205)  评论(0)    收藏  举报