云计算之openstack-newton版搭建（四）

云计算之openstack-newton版搭建（四）

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/p_w_picpaths/。

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" p_w_picpath

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

4.创建p_w_picpath服务API端点

# openstack endpoint create --region RegionOne \   p_w_picpath public http://controller:9292

[root@controller ~]# openstack endpoint create --region RegionOne \ >   p_w_picpath 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 | p_w_picpath                            | | url          | http://controller:9292           | +--------------+----------------------------------+

# openstack endpoint create --region RegionOne \   p_w_picpath internal http://controller:9292

[root@controller ~]# openstack endpoint create --region RegionOne \ >   p_w_picpath 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 | p_w_picpath                            | | url          | http://controller:9292           | +--------------+----------------------------------+

# openstack endpoint create --region RegionOne \   p_w_picpath admin http://controller:9292

[root@controller ~]# openstack endpoint create --region RegionOne \ >   p_w_picpath 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 | p_w_picpath                            | | 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/p_w_picpaths/

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 p_w_picpath create "cirros" \   --file cirros-0.3.4-x86_64-disk.img \   --disk-format qcow2 --container-format bare \   --public

[root@controller glance]# openstack p_w_picpath 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/p_w_picpaths/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/p_w_picpath                                    | | size             | 13287936                                             | | status           | active                                               | | tags             |                                                      | | updated_at       | 2017-01-11T03:10:52Z                                 | | virtual_size     | None                                                 | | visibility       | public                                               | +------------------+------------------------------------------------------+

[root@controller glance]# openstack p_w_picpath list +--------------------------------------+--------+--------+ | ID                                   | Name   | Status | +--------------------------------------+--------+--------+ | 2faf5e8a-890d-4c68-a391-a2911342a3af | cirros | active | +--------------------------------------+--------+--------+ 安装成功 [root@controller ~]# ls /var/lib/glance/p_w_picpaths/ 2faf5e8a-890d-4c68-a391-a2911342a3af

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