NOVA组件是调用虚拟化驱动，创建虚拟机。配置NOVA分控制节点和计算节点。

创建数据库

MariaDB [(none)]> CREATE DATABASE nova_api;MariaDB[(none)]> CREATE DATABASE nova;MariaDB [(none)]> CREATE DATABASE nova_cell0;MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%'  IDENTIFIED BY 'NOVA_DBPASS';

创建NOVA用户

[root@wang02 ~]# openstack user create --domain default --password NOVA_PASS nova

      将admin角色添加到NOVA用户和项目[root@wang02 ~]# openstack role add --project service --user nova admin

     创建一个NOVA实体[root@wang02 ~]# openstack service create --name nova --description "OpenStack Compute" compute

     创建NOVA的api[root@wang02 ~]# openstack endpoint create --region RegionOne compute public http://wang02:8774/v2.1 [root@wang02 ~]# openstack endpoint create --region RegionOne compute internal http://wang02:8774/v2.1[root@wang02 ~]# openstack endpoint create --region RegionOne compute admin http://wang02:8774/v2.1 

创建一个PLACEMENT用户

[root@wang02 ~]# openstack user create --domain default --password PLACEMENT_PASS placement

      将admin角色添加到placement用户和项目[root@wang02 ~]# openstack role add --project service --user placement admin

      创建一个PLACEMENT实体[root@wang02 ~]#openstack service create --name placement --description "Placement API" placement

      创建PLACEMENT的api [root@wang02 ~]# openstack endpoint create --region RegionOne placement public http://wang02:8778

[root@wang02 ~]# openstack endpoint create --region RegionOne placement internal http://wang02:8778

[root@wang02 ~]# openstack endpoint create --region RegionOne placement admin http://wang02:8778

下载NOVA的安装包

[root@wang02 ~]# openstack compute service list
+----+------------------+--------+----------+---------+-------+----------------------------+
| ID | Binary           | Host   | Zone     | Status  | State | Updated At                 |
+----+------------------+--------+----------+---------+-------+----------------------------+
|  1 | nova-scheduler   | wang02 | internal | enabled | up    | 2017-07-06T09:06:15.000000 |
|  2 | nova-consoleauth | wang02 | internal | enabled | up    | 2017-07-06T09:06:15.000000 |
|  3 | nova-conductor   | wang02 | internal | enabled | up    | 2017-07-06T09:06:16.000000 |
|  5 | nova-compute     | wang03 | nova     | enabled | up    | 2017-07-06T09:06:17.000000 |
+----+------------------+--------+----------+---------+-------+----------------------------+