A solid foundation for the deployment of OpenStack-Glance components

OpenStack-Glance component deployment

One, create a database instance and database user

mysql -u root -p
MariaDB [(none)]> CREATE DATABASE glance;
MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' IDENTIFIED BY 'GLANCE_DBPASS';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY 'GLANCE_DBPASS';
MariaDB [(none)]> flush privileges;
MariaDB [(none)]> exit

Two, create users, modify configuration files

Create OpenStack Glance user

• Before creating a user, you need to execute the administrator environment variable script (it has been defined in ~/.bashrc here)

[root@ct ~]# openstack user create --domain default --password GLANCE_PASS glance			###创建glance用户
[root@ct ~]# openstack role add --project service --user glance admin					#将glance用户添加到service项目中，并且针对这个项目拥有admin权限；注册glance的API，需要对service项目有admin权限
[root@ct ~]# openstack service create --name glance --description "OpenStack Image" image		创建一个service服务，service名称为glance，类型为image；创建完成后可以通过 openstack service list 查看

• Create an API endpoint for the mirroring service. OpenStack uses three API endpoints to represent three services: admin, internal, and public

[root@ct ~]# openstack endpoint create --region RegionOne image public http://ct:9292
[root@ct ~]# openstack endpoint create --region RegionOne image internal http://ct:9292
[root@ct ~]# openstack endpoint create --region RegionOne image admin http://ct:9292

• Install the openstack-glance package.

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

• Modify the glance configuration file, glance has two configuration files: /etc/glance/glance-api.conf
  /etc/glance/glance-registry.conf

[root@ct ~]# cp -a /etc/glance/glance-api.conf{,.bak}
[root@ct ~]# grep -Ev '^$|#' /etc/glance/glance-api.conf.bak > /etc/glance/glance-api.conf

• Add glance-api.conf configuration

#传入修改的参数
openstack-config --set /etc/glance/glance-api.conf database connection mysql+pymysql://glance:GLANCE_DBPASS@ct/glance
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken www_authenticate_uri http://ct:5000
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken auth_url http://ct:5000
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken memcached_servers ct:11211
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken auth_type password
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken project_domain_name Default
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken user_domain_name Default
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken project_name service
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken username glance
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken password GLANCE_PASS
openstack-config --set /etc/glance/glance-api.conf paste_deploy flavor keystone
openstack-config --set /etc/glance/glance-api.conf glance_store stores file,http
openstack-config --set /etc/glance/glance-api.conf glance_store default_store file
openstack-config --set /etc/glance/glance-api.conf glance_store filesystem_store_datadir /var/lib/glance/images/

[root@ct glance]# cat glance-api.conf
[DEFAULT]
[cinder]
[cors]
[database]
connection = mysql+pymysql://glance:GLANCE_DBPASS@ct/glance
[file]
[glance.store.http.store]
[glance.store.rbd.store]
[glance.store.sheepdog.store]
[glance.store.swift.store]
[glance.store.vmware_datastore.store]

[glance_store]
stores = file,http					#存储类型，file：文件，http：基于api调用的方式，把镜像放到其他存储上
default_store = file					#默认存储方式
filesystem_store_datadir = /var/lib/glance/images/	##指定镜像存放的本地目录

[image_format]
[keystone_authtoken]
www_authenticate_uri = http://ct:5000			##指定认证的keystone的URI
auth_url = http://ct:5000
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service				#glance用户针对service项目拥有admin权限
username = glance
password = GLANCE_PASS

[oslo_concurrency]
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]

[paste_deploy]
flavor = keystone					#指定提供认证的服务器为keystone

[profiler]
[store_type_location_strategy]
[task]
[taskflow_executor]

• Modify the glance-registry.conf configuration file

#备份、过滤注释信息
cp -a /etc/glance/glance-registry.conf{,.bak}
grep -Ev '^$|#' /etc/glance/glance-registry.conf.bak > /etc/glance/glance-registry.conf

#修改配置文件参数
openstack-config --set /etc/glance/glance-api.conf database connection mysql+pymysql://glance:GLANCE_DBPASS@ct/glance
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken www_authenticate_uri http://ct:5000
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken auth_url http://ct:5000
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken memcached_servers ct:11211
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken auth_type password
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken project_domain_name Default
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken user_domain_name Default
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken project_name service
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken username glance
openstack-config --set /etc/glance/glance-api.conf keystone_authtoken password GLANCE_PASS
openstack-config --set /etc/glance/glance-api.conf paste_deploy flavor keystone
openstack-config --set /etc/glance/glance-api.conf glance_store stores file,http
openstack-config --set /etc/glance/glance-api.conf glance_store default_store file
openstack-config --set /etc/glance/glance-api.conf glance_store filesystem_store_datadir /var/lib/glance/images/

#修改参数(配置与glance-api.conf相同）

openstack-config --set /etc/glance/glance-registry.conf database connection  mysql+pymysql://glance:GLANCE_DBPASS@t/glance
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken www_authenticate_uri   http://ct:5000
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken auth_url  http://ct:5000
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken memcached_servers  ct:11211
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken auth_type  password
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken project_domain_name  Default
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken user_domain_name  Default
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken project_name  service
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken username  glance
openstack-config --set /etc/glance/glance-registry.conf keystone_authtoken password  GLANCE_PASS
openstack-config --set /etc/glance/glance-registry.conf paste_deploy flavor  keystone

[root@ct glance]# cat glance-registry.conf
[DEFAULT]
[database]
connection = mysql+pymysql://glance:GLANCE_DBPASS@ct/glance

[keystone_authtoken]
www_authenticate_uri = http://ct:5000
auth_url = http://ct:5000
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = GLANCE_PASS

[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_policy]

[paste_deploy]
flavor = keystone

[profiler]

• Initialize the glance database and generate the related table structure; (no matter how many controllers there are, you only need to initialize it once)

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

• Open the glance service (after opening here, the directory /var/lib/glance/image will be generated to store the image)

[root@ct ~]# systemctl enable openstack-glance-api.service
[root@ct ~]# systemctl start openstack-glance-api.service

• Check the port (you can also use lsof -i:9292)

[root@ct glance]# netstat -natp | grep 9292
tcp        0      0 0.0.0.0:9292            0.0.0.0:*               LISTEN      62334/python2

• Give the openstack-glance-api.service service the writable permission to the storage device (-h: value to the file modification of the symbolic link/soft link)

[root@ct ~]# chown -hR glance:glance /var/lib/glance/

• Image import

• First upload the cirros image to the /root of the control node, then import glance, and finally check whether the creation is successful

[root@ct ~]# openstack image create --file cirros-0.3.5-x86_64-disk.img --disk-format qcow2 --container-format bare --public cirros

• Two ways to view the mirror

[root@ct ~]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| fee00323-f72e-4ac8-a150-502a5a725231 | cirro  | active |
| 2b2f2e68-7155-437b-9701-45c4298360ac | cirros | active |
| f3a3d02c-48f0-4d5e-ae0c-d2b414f68345 | cirros | active |
+--------------------------------------+--------+--------+