N版openstack——镜像服务glance

Posted 2020-08-25

【N版】openstack——镜像服务glance

一．openstack之glance镜像服务

1.1glance介绍

glance主要是由三部分组成

• glance-api：接收云系统镜像的创建，删除，读取请求，类似nova-api，通过其他模块（glance-registry及image store）来完成诸如镜像的查找、获取、上传、删除等操作，api监听端口9292。

• glance-registry：云系统的镜像注册服务，用于与mysql数据库交互，存储或获取镜像的元数据（metadata）；提供镜像元数据相关的REST接口，通过glance-registry，可以向数据库中写入或获取镜像各种数据，glance-registry监听端口9191，glance数据库中有两张表，一张是image表，另一张是image property表。image表保存了镜像格式、大小等信息；image property表则主要保存镜像的定制化信息。

• image store：是一个存储的接口层，通过这个接口，glance可以获取镜像，imagestore支持的存储有Amazon的S3、Openstack本身的Swift还有注入ceph，sheepdog，GFS等分布式存储。image store是镜像保存与获取的接口，它仅仅是一个接口层，具体的实现需要外部的存储支持。

• glance配置

• 项目及端点配置

[[email protected] ~]# openstack service create --nameglance --description "OpenStack Image" image                       <- 创建glance服务实体 ->

[[email protected] ~]# openstack endpoint create --regionRegionOne \

image public http://192.168.56.11:9292

[[email protected] ~]# openstack endpoint create --regionRegionOne \

image internal  http://192.168.56.11:9292

[[email protected] ~]# openstack endpoint create --regionRegionOne \

image admin http://192.168.56.11:9292

<-创建镜像服务API端点 ->

[[email protected] ~]# openstack endpoint list   <- 查看列表->

1.2 连接数据库配置

[[email protected] ~]# vim /etc/glance/glance-api.conf      <- glance-api配置->

1748 connection = mysql+pymysql://glance:[email protected]/glance

[[email protected] ~]# vim/etc/glance/glance-registry.conf    <- registry配置->

1038 connection =mysql+pymysql://glance:[email protected]/glance

[[email protected] ~]# su -s /bin/sh -c"glance-manage db_sync" glance <- 同步->

[[email protected] ~]# mysql -uglance -pglance-h192.168.56.11 -e "use glance;show tables"                                                              <-检查->

 

1.3连接keystone配置

[[email protected] ~]# vim /etc/glance/glance-api.conf    <- glance-api配置->

3178 [keystone_authtoken]  下面添加            <- 连接keystone配置->

3179 auth_uri = http://192.168.56.11:5000

3180 auth_url = http://192.168.56.11:35357

3181 memcached_servers = 192.168.56.11:11211

3182 auth_type = password

3183 project_domain_name = default

3184 user_domain_name = default

3185 project_name = service

3186 username = glance

3187 password = glance

打开3990 flavor = keystone的注释           <- 配置认证服务访问->

打开1864 stores = file,http的注释          <- 配置本地文件系统和镜像存储位置>

打开1896 default_store = file的注释

打开2196 filesystem_store_datadir = /var/lib/glance/images的注释

 

[[email protected] ~]# vim/etc/glance/glance-registry.conf     <- registry配置->

1127 [keystone_authtoken] 下面添加

1128 auth_uri = http://192.168.56.11:5000

1129 auth_url = http://192.168.56.11:35357

1130 memcached_servers = 192.168.56.11:11211

1131 auth_type = password

1132 project_domain_name = default

1133 user_domain_name = default

1134 project_name = service

1135 username = glance

1136 password = glance

打开 1910 flavor = keystone 注释                 <- 配置认证服务访问->

 

1.4 检查配置文件

[[email protected] ~]# grep ‘^[a-z]‘/etc/glance/glance-api.conf

connection =mysql+pymysql://glance:[email protected]/glance

stores = file,http

default_store = file

filesystem_store_datadir = /var/lib/glance/images

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

flavor = keystone

 

[[email protected] ~]# grep ‘^[a-z]‘/etc/glance/glance-registry.conf

connection =mysql+pymysql://glance:[email protected]/glance

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

flavor = keystone

 

1.5 启动服务

[[email protected] ~]# systemctl enableopenstack-glance-api.service \

openstack-glance-registry.service

[[email protected] ~]# systemctl startopenstack-glance-api.service \

openstack-glance-registry.service

1.6上传镜像

注: 把镜像放到任意目录下，执行以下命令，进入那个目录，否则要加绝对路径

[[email protected] ~]# openstack image create"cirros" \

--file cirros-0.3.4-x86_64-disk.img \

--disk-format qcow2 --container-format bare \

--public

1.7查看镜像列表

[[email protected] ~]# openstack image list

[[email protected] ~]# glance image-list               <- 老版本命令 ->

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