安装并配置控制节点¶
这个部分将描述如何在控制节点上安装和配置 Compute 服务，即 nova。
先决条件¶
在安装和配置 Compute 服务前，你必须创建数据库服务的凭据以及 API endpoints。
为了创建数据库，必须完成这些步骤：
Create the
nova_api,nova, andnova_cell0databases:MariaDB [(none)]> CREATE DATABASE nova_api; MariaDB [(none)]> CREATE DATABASE nova; MariaDB [(none)]> CREATE DATABASE nova_cell0;
对数据库进行正确的授权：
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';
用合适的密码代替
NOVA_DBPASS。退出数据库客户端。
获得
admin凭证来获取只有管理员能执行的命令的访问权限：$ . admin-openrcCreate the Compute service credentials:
创建
nova用户：$ openstack user create --domain default --password-prompt nova User Password: Repeat User Password: +---------------------+----------------------------------+ | Field | Value | +---------------------+----------------------------------+ | domain_id | default | | enabled | True | | id | 8a7dbf5279404537b1c7b86c033620fe | | name | nova | | options | {} | | password_expires_at | None | +---------------------+----------------------------------+
给
nova用户添加admin角色：$ openstack role add --project service --user nova admin注解
这个命令执行后没有输出。
创建
nova服务实体：$ openstack service create --name nova \ --description "OpenStack Compute" compute +-------------+----------------------------------+ | Field | Value | +-------------+----------------------------------+ | description | OpenStack Compute | | enabled | True | | id | 060d59eac51b4594815603d75a00aba2 | | name | nova | | type | compute | +-------------+----------------------------------+
Create the Compute API service endpoints:
$ openstack endpoint create --region RegionOne \ compute public http://controller:8774/v2.1 +--------------+-------------------------------------------+ | Field | Value | +--------------+-------------------------------------------+ | enabled | True | | id | 3c1caa473bfe4390a11e7177894bcc7b | | interface | public | | region | RegionOne | | region_id | RegionOne | | service_id | 060d59eac51b4594815603d75a00aba2 | | service_name | nova | | service_type | compute | | url | http://controller:8774/v2.1 | +--------------+-------------------------------------------+ $ openstack endpoint create --region RegionOne \ compute internal http://controller:8774/v2.1 +--------------+-------------------------------------------+ | Field | Value | +--------------+-------------------------------------------+ | enabled | True | | id | e3c918de680746a586eac1f2d9bc10ab | | interface | internal | | region | RegionOne | | region_id | RegionOne | | service_id | 060d59eac51b4594815603d75a00aba2 | | service_name | nova | | service_type | compute | | url | http://controller:8774/v2.1 | +--------------+-------------------------------------------+ $ openstack endpoint create --region RegionOne \ compute admin http://controller:8774/v2.1 +--------------+-------------------------------------------+ | Field | Value | +--------------+-------------------------------------------+ | enabled | True | | id | 38f7af91666a47cfb97b4dc790b94424 | | interface | admin | | region | RegionOne | | region_id | RegionOne | | service_id | 060d59eac51b4594815603d75a00aba2 | | service_name | nova | | service_type | compute | | url | http://controller:8774/v2.1 | +--------------+-------------------------------------------+
Create a Placement service user using your chosen
PLACEMENT_PASS:$ openstack user create --domain default --password-prompt placement User Password: Repeat User Password: +---------------------+----------------------------------+ | Field | Value | +---------------------+----------------------------------+ | domain_id | default | | enabled | True | | id | fa742015a6494a949f67629884fc7ec8 | | name | placement | | options | {} | | password_expires_at | None | +---------------------+----------------------------------+
Add the Placement user to the service project with the admin role:
$ openstack role add --project service --user placement admin注解
这个命令执行后没有输出。
Create the Placement API entry in the service catalog:
$ openstack service create --name placement --description "Placement API" placement +-------------+----------------------------------+ | Field | Value | +-------------+----------------------------------+ | description | Placement API | | enabled | True | | id | 2d1a27022e6e4185b86adac4444c495f | | name | placement | | type | placement | +-------------+----------------------------------+
Create the Placement API service endpoints:
$ openstack endpoint create --region RegionOne placement public http://controller:8778 +--------------+----------------------------------+ | Field | Value | +--------------+----------------------------------+ | enabled | True | | id | 2b1b2637908b4137a9c2e0470487cbc0 | | interface | public | | region | RegionOne | | region_id | RegionOne | | service_id | 2d1a27022e6e4185b86adac4444c495f | | service_name | placement | | service_type | placement | | url | http://controller:8778 | +--------------+----------------------------------+ $ openstack endpoint create --region RegionOne placement internal http://controller:8778 +--------------+----------------------------------+ | Field | Value | +--------------+----------------------------------+ | enabled | True | | id | 02bcda9a150a4bd7993ff4879df971ab | | interface | internal | | region | RegionOne | | region_id | RegionOne | | service_id | 2d1a27022e6e4185b86adac4444c495f | | service_name | placement | | service_type | placement | | url | http://controller:8778 | +--------------+----------------------------------+ $ openstack endpoint create --region RegionOne placement admin http://controller:8778 +--------------+----------------------------------+ | Field | Value | +--------------+----------------------------------+ | enabled | True | | id | 3d71177b9e0f406f98cbff198d74b182 | | interface | admin | | region | RegionOne | | region_id | RegionOne | | service_id | 2d1a27022e6e4185b86adac4444c495f | | service_name | placement | | service_type | placement | | url | http://controller:8778 | +--------------+----------------------------------+
安全并配置组件¶
注解
默认配置文件在各发行版本中可能不同。你可能需要添加这些部分，选项而不是修改已经存在的部分和选项。另外，在配置片段中的省略号(...)表示默认的配置选项你应该保留。
编辑``/etc/nova/nova.conf``文件并完成下面的操作：
在``[api_database]``和``[database]``部分，配置数据库的连接：
[api_database] # ... connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api [database] # ... connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova
用你为 Compute 数据库选择的密码来代替
NOVA_DBPASS。在``[DEFAULT]``部分，配置``RabbitMQ``消息队列访问权限：
[DEFAULT] # ... transport_url = rabbit://openstack:RABBIT_PASS@controller
用你在 “RabbitMQ” 中为 “openstack” 选择的密码替换 “RABBIT_PASS”。
In the
[api]and[keystone_authtoken]sections, configure Identity service access:[api] # ... auth_strategy = keystone [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 = nova password = NOVA_PASS
使用你在身份认证服务中设置的``nova`` 用户的密码替换``NOVA_PASS``。
注解
在
[keystone_authtoken]中注释或者删除其他选项。在
[DEFAULT部分，配置``my_ip`` 来使用控制节点的管理接口的IP 地址。[DEFAULT] # ... my_ip = 10.0.0.11
在``[vnc]``部分，配置VNC代理使用控制节点的管理接口IP地址 ：
[vnc] enabled = true # ... vncserver_listen = $my_ip vncserver_proxyclient_address = $my_ip
在
[glance]区域，配置镜像服务 API 的位置：[glance] # ... api_servers = http://controller:9292
In the
[placement]section, configure the Placement API:[placement] # ... os_region_name = RegionOne project_domain_name = Default project_name = service auth_type = password user_domain_name = Default auth_url = http://controller:35357/v3 username = placement password = PLACEMENT_PASS
Replace
PLACEMENT_PASSwith the password you choose for theplacementuser in the Identity service. Comment out any other options in the[placement]section.
完成安装¶
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