块存储服务（Block Storage Service），项目代号为cinder，作为 OpenStack 的块存储服务，为 Instance 提供虚拟磁盘，其类似AWS的EBS(Elastic Block Storage)，它们之间的区别在于存储卷暴露给虚拟机实例的方式。在OpenStack中，通过iSCSI暴露LVM卷组(VG)对卷进行管理，所以使用cinder的存储节点都会有VG。
cinder在控制节点上需要安装openstack-cinder，对应要启动的服务有：cinder-api、cinder-scheduler。修改好配置后，需要启动：openstack-cinder-api.service openstack-cinder-scheduler.service
cinder在存储节点上需要安装openstack-cinder lvm2 device-mapper-persistent-data openstack-cinder targetcli python-keystone
cinder在存储节点上运行的服务是：cinder-volume，当然还需启动其依赖的LVM、target服务。修改好配置后，需要启动：lvm2-lvmetad.service、openstack-cinder-volume.service target.service
1、使用数据库访问客户端以 root 用户身份连接到数据库服务器：
# mysql -uroot -p123
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 17
Server version: 10.3.20-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]>
2、创建 cinder 数据库
MariaDB [(none)]> CREATE DATABASE cinder default character set utf8;
3、授予对 cinder 数据库的适当访问权限
MariaDB [(none)]> GRANT ALL PRIVILEGES ON cinder.* TO 'cinder'@'localhost' \
IDENTIFIED BY 'CINDER_DBPASS';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON cinder.* TO 'cinder'@'%' \
IDENTIFIED BY 'CINDER_DBPASS';
4、创建cinder用户
# openstack user create --domain default --password=cinder cinder
5、将admin角色添加到cinder用户
# openstack role add --project service --user cinder admin
6、创建cinderv2和cinderv3服务实体
# openstack service create --name cinderv2 \
--description "OpenStack Block Storage" volumev2
# openstack service create --name cinderv3 \
--description "OpenStack Block Storage" volumev3
7、创建块存储服务API端点
# openstack endpoint create --region RegionOne \
volumev2 public http://controller:8776/v2/%\(project_id\)s
# openstack endpoint create --region RegionOne \
volumev2 internal http://controller:8776/v2/%\(project_id\)s
# openstack endpoint create --region RegionOne \
volumev2 admin http://controller:8776/v2/%\(project_id\)s
# openstack endpoint create --region RegionOne \
volumev3 public http://controller:8776/v3/%\(project_id\)s
# openstack endpoint create --region RegionOne \
volumev3 internal http://controller:8776/v3/%\(project_id\)s
# openstack endpoint create --region RegionOne \
volumev3 admin http://controller:8776/v3/%\(project_id\)s
8、安装cinder服务
# yum install openstack-cinder -y
9、修改配置文件/etc/cinder/cinder.conf
# cd /etc/cinder/ && mv cinder.conf cinder.conf.source && cat cinder.conf.source |grep -Ev "^#|^$" > cinder.conf && chown cinder:root cinder.conf
# vi /etc/cinder/cinder.conf
在 [database] “配置数据库访问”部分中
[database]
# ...
connection = mysql+pymysql://cinder:CINDER_DBPASS@controller/cinder
在【DEFAULT】部分中，配置RabbitMQ消息队列访问
[DEFAULT]
# ...
transport_url = rabbit://openstack:openstack@controller
在 [DEFAULT] and [keystone_authtoken] 部分中，配置 Identity service 访问权限
[DEFAULT]
# ...
auth_strategy = keystone
[keystone_authtoken]
# ...
www_authenticate_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = cinder
password = cinder
在【DEFAULT】部分，配置my_ip选项以使用控制器节点的管理界面IP地址
[DEFAULT]
# ...
my_ip = 192.168.58.100
在【oslo_concurrency】部分中，配置锁路径
[oslo_concurrency]
# ...
lock_path = /var/lib/cinder/tmp
10、同步cinder数据库
# su -s /bin/sh -c "cinder-manage db sync" cinder
11、修改/etc/nova/nova.conf
# vim /etc/nova/nova.conf
在【cinder】部分，启用后端存储
[cinder]
os_region_name = RegionOne
12、重新启动nova-api服务
# systemctl restart openstack-nova-api.service
13、启动cinder-api、cinder-scheduler服务并将其设置为开机自启动
# systemctl enable openstack-cinder-api.service openstack-cinder-scheduler.service
# systemctl start openstack-cinder-api.service openstack-cinder-scheduler.service
14、验证控制节点cinder-scheduler，状态为up即正常
# openstack volume service list
+------------------+---------------+------+---------+-------+----------------------------+
| Binary | Host | Zone | Status | State | Updated At |
+------------------+---------------+------+---------+-------+----------------------------+
| cinder-scheduler | controller | nova | enabled | up | 2024-02-28T18:17:45.000000 |
| cinder-volume | compute02@lvm | nova | enabled | up | 2024-02-28T18:17:47.000000 |
+------------------+---------------+------+---------+-------+----------------------------+
