openstack镜像服务glance

官方文档：https://docs.openstack.org/ocata/install-guide-rdo/glance-install.html

Glance主要有两个重要的服务：
Glance-api:接受云系统镜像创建、删除、读取请求。
Glance-Registry:云系统的镜像注册服务。

加载admin的环境变量：source /admin-openstack.sh
vim /admin-openstack.sh
export OS_USERNAME=admin
export OS_PASSWORD=admin
export OS_PROJECT_NAME=admin
export OS_USER_DOMAIN_NAME=default
export OS_PROJECT_DOMAIN_NAME=default
export OS_AUTH_URL=http://192.168.2.11:35357/v3
export OS_IDENTITY_API_VERSION=3
export OS_IMAGE_API_VERSION=2
注意：只要有用到openstack就要加载环境变量

//创建glance用户(控制节点)
openstack user create --domain default --password-prompt glance

openstack role add --project service --user glance admin

//安装glance服务组件(控制节点)
yum install -y openstack-glance

//编辑文件 /etc/glance/glance-api.conf 并完成如下动作(控制节点)
vim /etc/glance/glance-api.conf
****************************************************
[database]

1823 connection = mysql+pymysql://glance:glance@192.168.2.11/glance

(打开注释并修改)

[keystone_authtoken] 3282 在这个模块下面添加如下
auth_uri = http://192.168.2.11:5000
auth_url = http://192.168.2.11:35357
memcached_servers = 192.168.2.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

（添加内容）

4235 #flavor = keystone

（打开注释）

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

(添加内容)

//编辑文件 /etc/glance/glance-registry.conf 并完成如下动作(控制节点)
vim /etc/glance/glance-registry.conf
[database]
1141 connection = mysql+pymysql://glance:glance@192.168.2.11/glance

（打开注释并修改）

[keystone_authtoken]
auth_uri = http://192.168.2.11:5000
auth_url = http://192.168.2.11:35357
memcached_servers = 192.168.2.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = glance

（添加内容）

2159 #flavor = keystone

(打开注释)

同步glance数据库
su -s /bin/sh -c "glance-manage db_sync" glance
查看是否同步成功
mysql -h 192.168.2.11 -uglance -pglance -e "use glance;show tables;"

修改memcached的配置文件：vim /etc/sysconfig/memcached
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS="-l 192.168.2.11,::1"

systemctl enable memcached
systemctl start memcached

设置开机自启动并启动glance-api，glance-registry服务
systemctl enable openstack-glance-api.service openstack-glance-registry.service
systemctl start openstack-glance-api.service openstack-glance-registry.service

openstack endpoint create --region RegionOne image internal http://192.168.2.11:9292

[root@localhost log]# openstack endpoint create --region RegionOne image internal http://192.168.2.11:9292

openstack endpoint create --region RegionOne image admin http://192.168.2.11:9292

验证是否正常
[root@localhost log]# openstack image list

[root@localhost log]#
（没有报错就说明服务正常）

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