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 glanceUser Password:123456Repeat 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 "^#|^$" glance-api.conf.bak > glance-api.conf[root@controller glance]# vim glance-api.conf
[database]...connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance
[keystone_authtoken]...auth_uri = http://controller:5000auth_url = http://controller:35357memcached_servers = controller:11211auth_type = passwordproject_domain_name = Defaultuser_domain_name = Defaultproject_name = serviceusername = glancepassword = 123456[paste_deploy]...flavor = keystone
[glance_store]...stores = file,httpdefault_store = filefilesystem_store_datadir = /var/lib/glance/p_w_picpaths/
修改/etc/glance/glance-registry.conf
[root@controller ~]# cd /etc/glance/[root@controller glance]# cp glance-registry.conf glance-registry.conf.bak[root@controller glance]# egrep -v "^#|^$" glance-registry.conf.bak glance-registry.conf
[database]...connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance
[keystone_authtoken]...auth_uri = http://controller:5000auth_url = http://controller:35357memcached_servers = controller:11211auth_type = passwordproject_domain_name = Defaultuser_domain_name = Defaultproject_name = serviceusername = glancepassword = 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