OpenStack部署-3安装glance

安装glance

glance为虚拟机提供虚拟机的镜像服务，其本身不负责实际的存储

安装必备条件

1. 创建数据库
   使用root帐号登录数据库

mysql -u root -p

创建glance数据库

MariaDB [(none)]> CREATE DATABASE glance;

为glance数据库赋予权限

MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \
  IDENTIFIED BY 'GLANCE_DBPASS';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \
  IDENTIFIED BY 'GLANCE_DBPASS';

2. 获取admin用户的环境变量，并创建服务认证

. admin-openrc

3. 要创建服务凭据

• 创建glance user

openstack user create --domain default --password-prompt glance
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 3f4e777c4062483ab8d9edd7dff829df |
| name                | glance                           |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

• 把admin用户添加到glance用户和项目中

openstack role add --project service --user glance admin

此命令无返回值

• 创建glance服务

$ openstack service create --name glance \
  --description "OpenStack Image" image

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image                  |
| enabled     | True                             |
| id          | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

4. 创建镜像服务API端点

$ openstack endpoint create --region RegionOne \
  image public http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 340be3625e9b4239a6415d034e98aace |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  image internal http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | a6e4b153c2ae4c919eccfdbb7dceb5d2 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  image admin http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 0c37ed58103f4300a84ff125a539032d |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

安装和配置组件

1. 安装软件包

yum install openstack-glance

2. 编辑 /etc/glance/glance-api.conf 文件进行如下操作：

• 在[database]字段, 设置数据库权限:

[database]
# ...
connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance

可将GLANCE_DBPASS更改为合适密码

• 在 [keystone_authtoken] 和[paste_deploy]字段,配置身份服务访问:

[keystone_authtoken]
# ...
auth_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = GLANCE_PASS

[paste_deploy]
# ...
flavor = keystone

• 在 [glance_store] 字段, 设置本地文件系统及镜像存储位置

[glance_store]
# ...
stores = file,http
default_store = file
filesystem_store_datadir = /var/lib/glance/images/

3. 编写 /etc/glance/glance-registry.conf 文件并完成以下操作

• 在 [database]字段, 设置数据库接入

[database]
# ...
connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance

• 在 [keystone_authtoken] 及[paste_deploy] 字段, 设置用户服务

[keystone_authtoken]
# ...
auth_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = GLANCE_PASS

[paste_deploy]
# ...
flavor = keystone

GLANCE_PASS 可以替换为可用的密码

4. 填充image服务数据库

su -s /bin/sh -c "glance-manage db_sync" glance

结束安装并配置

# systemctl enable openstack-glance-api.service \
  openstack-glance-registry.service
# systemctl start openstack-glance-api.service \
  openstack-glance-registry.service