云计算之openstack-newton版搭建(四)

时间:2017-01-11  |  来源:cnphp6

镜像服务

镜像服务(glance)是用户能够发现,注册和检索虚拟机的镜像,它提供了一个REST API,使您能够查询虚拟机映像元数据并检索实际映像。可以将通过Image服务提供的虚拟机映像存储在各种位置,从简单文件系统到对象存储系统(如OpenStack对象存储)。镜像默认放在/var/lib/glance/images/。

下面说一下glance服务的安装及配置

1.创建数据库

[root@controller ~]# mysql -uroot -p123456

mysql> CREATE DATABASE glance;
mysql> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \
  IDENTIFIED BY 'GLANCE_DBPASS';
mysql> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \
  IDENTIFIED BY 'GLANCE_DBPASS';

2.获取admin权限

[root@controller ~]# . admin-openrc

3.创建glance用户

[root@controller ~]# openstack user create --domain default --password-prompt glance
User Password:123456
Repeat User Password:123456
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 09d8b7bbfe9748ffadff25bffc1b46cd |
| name                | glance                           |
| password_expires_at | None                             |
+---------------------+----------------------------------+

将admin角色添加到glance用户和服务项目中

[root@controller ~]# openstack role add --project service --user glance admin

创建glance服务实例

# openstack service create --name glance \
  --description "OpenStack Image" image
[root@controller ~]# openstack service create --name glance \
>   --description "OpenStack Image" image
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image                  |
| enabled     | True                             |
| id          | d6319246d7e3486d86b54634f07c1cb8 |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

4.创建image服务API端点

# openstack endpoint create --region RegionOne \
  image public http://controller:9292
[root@controller ~]# openstack endpoint create --region RegionOne \
>   image public http://controller:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 621b1c8dabc9472591690d4dadbd4dff |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | d6319246d7e3486d86b54634f07c1cb8 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+
# openstack endpoint create --region RegionOne \
  image internal http://controller:9292
[root@controller ~]# openstack endpoint create --region RegionOne \
>   image internal http://controller:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | f2d4366f844d415e9745c6d7d817d859 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | d6319246d7e3486d86b54634f07c1cb8 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+
# openstack endpoint create --region RegionOne \
  image admin http://controller:9292
[root@controller ~]# openstack endpoint create --region RegionOne \
>   image admin http://controller:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 48114b387628482f9ae11d0cdb29dce2 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | d6319246d7e3486d86b54634f07c1cb8 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

5.安装服务

[root@controller ~]# yum install openstack-glance -y

6.配置服务

修改/etc/glance/glance-api.conf

[root@controller ~]# cd /etc/glance/
[root@controller glance]# cp glance-api.conf glance-api.conf.bak
[root@controller glance]# egrep -v "^#|^$" glance-api.conf.bak > glance-api.conf
[root@controller glance]# vim glance-api.conf
[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance
[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = 123456

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

修改/etc/glance/glance-registry.conf

[root@controller ~]# cd /etc/glance/
[root@controller glance]# cp glance-registry.conf glance-registry.conf.bak
[root@controller glance]# egrep -v "^#|^$" glance-registry.conf.bak glance-registry.conf
[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance
[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = 123456

[paste_deploy]
...
flavor = keystone

7.填充数据库

[root@controller glance]# su -s /bin/sh -c "glance-manage db_sync" glance

8.启动服务

[root@controller glance]# systemctl enable openstack-glance-api.service   openstack-glance-registry.service
[root@controller glance]#  systemctl start openstack-glance-api.service   openstack-glance-registry.service

9.验证

下载镜像

[root@controller glance]# wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

导入镜像

# openstack image create "cirros" \
  --file cirros-0.3.4-x86_64-disk.img \
  --disk-format qcow2 --container-format bare \
  --public
[root@controller glance]# 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       | 2017-01-11T03:10:51Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/2faf5e8a-890d-4c68-a391-a2911342a3af/file |
| id               | 2faf5e8a-890d-4c68-a391-a2911342a3af                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | cirros                                               |
| owner            | 3cf031774a844e4c8422cadb9d67785e                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 13287936                                             |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2017-01-11T03:10:52Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+
[root@controller glance]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| 2faf5e8a-890d-4c68-a391-a2911342a3af | cirros | active |
+--------------------------------------+--------+--------+
安装成功
[root@controller ~]# ls /var/lib/glance/images/
2faf5e8a-890d-4c68-a391-a2911342a3af