openstack学习-glance安装（三）

glance在openstack负责镜像相关管理的，对外提供标准的api提供服务，glance有两个服务，一个是glance-api接受云系统镜像的创建、删除、读取请求。glance-registry是云系统的镜像注册服务。

glance有两个监听端口，一个是9292，监听api一个是9191，监听registry。

一、安装Glance

[root@linux-node1 ~]# yum install -y openstack-glance

二、Glance数据库配置

1、Glance-api

[root@linux-node1 ~]# vim /etc/glance/glance-api.conf
[database]
connection= mysql+pymysql://glance:glance@192.168.56.11/glance

 2、glance-registry

[root@linux-node1 ~]# vim /etc/glance/glance-registry.conf
[database]
connection= mysql+pymysql://glance:glance@192.168.56.11/glance

三、设置Keystone

1、glance-api

[root@linux-node1 ~]# vim /etc/glance/glance-api.conf
[keystone_authtoken]
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
memcached_servers = 192.168.56.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

[paste_deploy]
flavor=keystone

2、glance-registry

[root@linux-node1 ~]# vim /etc/glance/glance-registry.conf
[keystone_authtoken]
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
memcached_servers = 192.168.56.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

[paste_deploy]
flavor=keystone

四、设置Glance镜像存储

[root@linux-node1 ~]# vim /etc/glance/glance-api.conf
[glance_store]
stores = file,http
default_store=file
filesystem_store_datadir=/var/lib/glance/images/

五、同步数据库

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

六、验证同步的情况

[root@linux-node1 ~]# mysql  -h 192.168.56.11 -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                            |
+----------------------------------+

七、启动Glance服务

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

八、Glance服务注册

想要让别的服务可以使用Glance，就需要在Keystone上完成服务的注册。注意需要先source一下admin的环境变量。

[root@linux-node1 ~]# source admin-openstack.sh
# openstack service create --name glance --description "OpenStack Image service" image
# openstack endpoint create --region RegionOne   image public http://192.168.56.11:9292
# openstack endpoint create --region RegionOne   image internal http://192.168.56.11:9292
# openstack endpoint create --region RegionOne   image admin http://192.168.56.11:9292

九、测试Glance状态

[root@linux-node1 ~]# source admin-openstack.sh
[root@linux-node1 ~]# openstack image list

 十一、Glance镜像

在刚开始实施OpenStack平台阶段，如果没有制作镜像。可以使用一个实验的镜像进行测试，这是一个小的Linux系统。

[root@linux-node1 ~]# cd /usr/local/src
[root@linux-node1 src]#wget  http://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img

[root@linux-node1 src]# openstack image create "cirros" --disk-format qcow2 
--container-format bare --file cirros-0.3.5-x86_64-disk.img --public
[root@linux-node1 src]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| cf154a84-a73a-451b-bcb3-83c98e7c0d3e | cirros | active |
+--------------------------------------+--------+--------+