安装并配置控制节点

updated: 2019-08-16 17:09
Contents

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。

  1. 为了创建数据库，必须完成这些步骤：

    • 用数据库连接客户端以 root 用户连接到数据库服务器：

      $ mysql -u root -p

    • Create the nova_api, nova, and nova_cell0 databases:

      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。

  2. 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-openrc

  3. Create 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                          |
+-------------+----------------------------------+

  4. 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               |
+--------------+-------------------------------------------+

  5. 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                             |
+---------------------+----------------------------------+

  6. 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。

  7. 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                        |
+-------------+----------------------------------+

  8. 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。

  1. 安装软件包：

    # yum install openstack-nova-api openstack-nova-conductor \
  openstack-nova-console openstack-nova-novncproxy \
  openstack-nova-scheduler openstack-nova-placement-api

  1. 编辑``/etc/nova/nova.conf``文件并完成下面的操作：

    • 在``[DEFAULT]``部分，只启用计算和元数据API：

      [DEFAULT]
# ...
enabled_apis = osapi_compute,metadata

    • 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 ``[DEFAULT]``部分，启用网络服务支持：

    [DEFAULT]
# ...
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

    注解

    默认情况下，计算服务使用内置的防火墙服务。由于网络服务包含了防火墙服务，你必须使用``nova.virt.firewall.NoopFirewallDriver``防火墙服务来禁用掉计算服务内置的防火墙服务

  • 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

  • 在 [oslo_concurrency] 部分，配置锁路径：

    [oslo_concurrency]
# ...
lock_path = /var/lib/nova/tmp

  • 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_PASS with the password you choose for the placement user in the Identity service. Comment out any other options in the [placement] section.

  • Due to a packaging bug, you must enable access to the Placement API by adding the following configuration to /etc/httpd/conf.d/00-nova-placement-api.conf:

    <Directory /usr/bin>
   <IfVersion >= 2.4>
      Require all granted
   </IfVersion>
   <IfVersion < 2.4>
      Order allow,deny
      Allow from all
   </IfVersion>
</Directory>

  • Restart the httpd service:

    # systemctl restart httpd

  1. Populate the nova-api database:

    # su -s /bin/sh -c "nova-manage api_db sync" nova

    注解

    忽略输出中任何不推荐使用的信息。

  2. Register the cell0 database:

    # su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova

  3. Create the cell1 cell:

    # su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
109e1d4b-536a-40d0-83c6-5f121b82b650

  4. Populate the nova database:

    # su -s /bin/sh -c "nova-manage db sync" nova

  5. Verify nova cell0 and cell1 are registered correctly:

    # nova-manage cell_v2 list_cells
+-------+--------------------------------------+
| Name  | UUID                                 |
+-------+--------------------------------------+
| cell1 | 109e1d4b-536a-40d0-83c6-5f121b82b650 |
| cell0 | 00000000-0000-0000-0000-000000000000 |
+-------+--------------------------------------+

完成安装

  • 启动 Compute 服务并将其设置为随系统启动：

    # systemctl enable openstack-nova-api.service \
  openstack-nova-consoleauth.service openstack-nova-scheduler.service \
  openstack-nova-conductor.service openstack-nova-novncproxy.service
# systemctl start openstack-nova-api.service \
  openstack-nova-consoleauth.service openstack-nova-scheduler.service \
  openstack-nova-conductor.service openstack-nova-novncproxy.service
updated: 2019-08-16 17:09
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