Openstack云平台搭建课程四·镜像服务Glance

这是搭建Openstack云平台的第四堂课，主要讲解镜像服务glance的配置过程。Glance负责管理Openstack中所有镜像，这是创建虚拟机的基本服务，因此也需要优先完成配置。

创建数据库用户

mysql -uroot -pMariadb123

create database glance;
grant all privileges on glance.* to 'glance'@'localhost' identified by 'Glance123';
grant all privileges on glance.* to 'glance'@'%' identified by 'Glance123';
flush privileges;
exit

配置glance服务凭证

创建glance服务凭证

# source /opt/scripts/admin
# 开始创建用户
openstack user create \
--domain default \
--password-prompt glance

输入密码(Glance123)后继续：

openstack role add \
--project service \
--user glance admin
openstack service create \
--name glance \
--description "OpenStack Image" image

创建endpoint

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

配置控制节点上的镜像服务

安装glance

yum -y install openstack-glance

配置 glance api

修改配置/etc/glance/glance-api.conf：

[DEFAULT]
bind_host = 10.10.100.150
enable_v1_api = False

[database]
connection = mysql+pymysql://glance:Glance123@controller/glance

[glance_store]
stores = file,http
default_store = file
filesystem_store_datadir = /var/lib/glance/images/
#以下是使用ceph存储的配置，使用ceph时删除cinder参数
#stores = glance.store.rbd.Store
#default_store = rbd
#rbd_store_pool = images
#rbd_store_user = glance
#ceph_conf = /etc/ceph/ceph.conf

[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = Glance123

[paste_deploy]
flavor = keystone

注意：如果要迁移镜像目录，例如/data/glance/images，需要对该目录授权：

chown -R glance:nobody /data/glance/images

配置 glance registry

修改配置/etc/glance/glance-registry.conf：

[DEFAULT]
bind_host = 10.10.100.150

[database]
connection = mysql+pymysql://glance:Glance123@controller/glance

[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = Glance123

[paste_deploy]
flavor = keystone

初始化数据

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

启动应用

systemctl enable openstack-glance-api openstack-glance-registry
systemctl start openstack-glance-api openstack-glance-registry

验证结果

现在可以登录web界面上传镜像，或先下载一个镜像至glance目录，然后执行以下命令：

openstack image create "CentOS7.5" \
--file CentOS-7-x86_64-DVD-1804.iso \
--disk-format qcow2 --container-format bare \
--public

常用镜像操作命令：

openstack image list
glance image-list
openstack image delete <image_id>
glance image-delete <image_name>

原创文章禁止转载：技术学堂 » Openstack云平台搭建课程四·镜像服务Glance