glance系列二：glance部署及操作

一 簡單架構圖示參考

更新中...

二 部署glance

yum install memcached python-memcached
systemctl enable memcached.service
systemctl start memcached.service

step 1：glance關於數據庫的操作

mysql -u root -p #登入數據庫
CREATE DATABASE glance; #新建庫keystone
GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \
  IDENTIFIED BY '123'; #新建本地訪問glance庫的賬號
GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \
  IDENTIFIED BY '123'; #新建遠程訪問glance庫的賬號

step 2：glance關於keystone的操作

soure admin-openrc #執行管理員腳本
#為glance的使用者創建用戶
openstack user create --domain default --password-prompt glance 

#對glance-service添加role角色,提示：用戶glance只有在一個確定的項目service內才有角色的概念，單獨的用戶或者單獨的項目都是無法綁定角色的。
openstack role add --project service --user glance admin 


#創建glance服務的catalog：service+endpoint
openstack service create --name glance \
--description "OpenStack Image" image

openstack endpoint create --region RegionOne \
image public http://192.168.31.57:9292
openstack endpoint create --region RegionOne \
image internal http://192.168.31.57:9292
openstack endpoint create --region RegionOne \
image admin http://192.168.31.57:9292

step 3：安裝軟件包

yum -y install openstack-glance

step 4：配置/etc/glance/glance.conf

大前提：每一條配置都應該新增到文件中，一定不要打開注釋在原有的基礎上修改。

創建本地存儲：

1.一定要在opesntack-glance-api.service服務啟動之前部署好存儲設備，因為該服務在啟動時會加載存儲驅動檢索存儲設備，如果事先不存在，就意味着該服務沒有識別到任何可用的存儲設備，即便是后來你又新增了存儲，仍然是無效的，最終導致你上傳鏡像失敗；

2.一定要賦予opesntack-glance-api.service服務對存儲設備的可寫權限。

mkdir -p /var/lib/glance/images
chown -R glance.glance /var/lib/glance/images

 

配置/etc/glance/glance-api.conf

[database]
connection = mysql+pymysql://glance:123@192.168.31.57/glance

[keystone_authtoken]
auth_uri = http://192.168.31.57:5000
auth_url = http://192.168.31.57:35357
memcached_servers = 192.168.31.57:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = 123

[paste_deploy]
flavor = keystone

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

配置/etc/glance/glance-registry.conf

[database]
connection = mysql+pymysql://glance:123@192.168.31.57/glance

[keystone_authtoken]
auth_uri = http://192.168.31.57:5000
auth_url = http://192.168.31.57:35357
memcached_servers = 192.168.31.57:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = 123

[paste_deploy]
flavor = keystone

step 5: 初始化數據庫glance

su -s /bin/sh -c "glance-manage db_sync" glance
'''
忽略以下打印，此乃正常性行為：
Option "verbose" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:1171:...... oslo_db.sqlalchemy.enginefacade
...... a future release.")
  result = self._query(query)
'''

step 6：啟動glance且設置開機啟動

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

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

三 驗證

source admin-openrc

#如果沒有wget則必須yum -y install wget
wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

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

 

For information about the openstack image create parameters, see Create or update an image (glance) in the OpenStack User Guide.

For information about disk and container formats for images, see Disk and container formats for images in the OpenStack Virtual Machine Image Guide.