Install and configure controller node

Install and configure controller node

This section describes how to install and configure the Compute service, code-named nova, on the controller node.

Prerequisites

Before you install and configure the Compute service, you must create databases, service credentials, and API endpoints.

  1. To create the databases, complete these steps:

    • Use the database access client to connect to the database server as the root user:

      $ mysql -u root -p
      
    • Create the nova_api and nova databases:

      mysql> CREATE DATABASE nova_api;
      mysql> CREATE DATABASE nova;
      
    • Grant proper access to the databases:

      mysql> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' \
        IDENTIFIED BY 'NOVA_DBPASS';
      mysql> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' \
        IDENTIFIED BY 'NOVA_DBPASS';
      mysql> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' \
        IDENTIFIED BY 'NOVA_DBPASS';
      mysql> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' \
        IDENTIFIED BY 'NOVA_DBPASS';
      

      Replace NOVA_DBPASS with a suitable password.

    • Exit the database access client.

  2. Source the admin credentials to gain access to admin-only CLI commands:

    $ . admin-openrc
    
  3. To create the service credentials, complete these steps:

    • Create the nova user:

      $ openstack user create --domain default \
        --password-prompt nova
      
      User Password:
      Repeat User Password:
      +---------------------+----------------------------------+
      | Field               | Value                            |
      +---------------------+----------------------------------+
      | domain_id           | default                          |
      | enabled             | True                             |
      | id                  | 8a7dbf5279404537b1c7b86c033620fe |
      | name                | nova                             |
      | password_expires_at | None                             |
      +---------------------+----------------------------------+
      
    • Add the admin role to the nova user:

      $ openstack role add --project service --user nova admin
      

      Note

      This command provides no output.

    • Create the nova service entity:

      $ 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 service API endpoints:

    $ openstack endpoint create --region RegionOne \
      compute public http://controller:8774/v2.1/%\(tenant_id\)s
    
    +--------------+-------------------------------------------+
    | 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/%(tenant_id)s |
    +--------------+-------------------------------------------+
    
    $ openstack endpoint create --region RegionOne \
      compute internal http://controller:8774/v2.1/%\(tenant_id\)s
    
    +--------------+-------------------------------------------+
    | 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/%(tenant_id)s |
    +--------------+-------------------------------------------+
    
    $ openstack endpoint create --region RegionOne \
      compute admin http://controller:8774/v2.1/%\(tenant_id\)s
    
    +--------------+-------------------------------------------+
    | 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/%(tenant_id)s |
    +--------------+-------------------------------------------+
    

Install and configure components

Note

Default configuration files vary by distribution. You might need to add these sections and options rather than modifying existing sections and options. Also, an ellipsis (...) in the configuration snippets indicates potential default configuration options that you should retain.

  1. Install the packages:

    # apt install nova-api nova-conductor nova-consoleauth \
      nova-consoleproxy nova-scheduler
    

    Note

    nova-api-metadata is included in the nova-api package, and can be selected through debconf.

    Note

    A unique nova-consoleproxy package provides the nova-novncproxy, nova-spicehtml5proxy, and nova-xvpvncproxy packages. To select packages, edit the /etc/default/nova-consoleproxy file or use the debconf interface. You can also manually edit the /etc/default/nova-consoleproxy file, and stop and start the console daemons.

  1. Edit the /etc/nova/nova.conf file and complete the following actions:

    • In the [api_database] and [database] sections, configure database access:

      [api_database]
      ...
      connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api
      
      [database]
      ...
      connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova
      

      Replace NOVA_DBPASS with the password you chose for the Compute databases.

    • In the [DEFAULT] section, configure RabbitMQ message queue access:

      [DEFAULT]
      ...
      transport_url = rabbit://openstack:RABBIT_PASS@controller
      

      Replace RABBIT_PASS with the password you chose for the openstack account in RabbitMQ.

    • In the [DEFAULT] and [keystone_authtoken] sections, configure Identity service access:

      [DEFAULT]
      ...
      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
      

      Replace NOVA_PASS with the password you chose for the nova user in the Identity service.

      Note

      Comment out or remove any other options in the [keystone_authtoken] section.

    • In the [DEFAULT] section, configure the my_ip option to use the management interface IP address of the controller node:

      [DEFAULT]
      ...
      my_ip = 10.0.0.11
      
    • The .config and .postinst maintainer scripts of the nova-common package detect automatically the IP address which goes in the my_ip directive of the [DEFAULT] section. This value will normally still be prompted, and you can check that it is correct in the nova.conf after nova-common is installed:

      [DEFAULT]
      ...
      my_ip = 10.0.0.11
      
    • In the [DEFAULT] section, enable support for the Networking service:

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

      Note

      By default, Compute uses an internal firewall driver. Since the Networking service includes a firewall driver, you must disable the Compute firewall driver by using the nova.virt.firewall.NoopFirewallDriver firewall driver.

    • In the [vnc] section, configure the VNC proxy to use the management interface IP address of the controller node:

      [vnc]
      ...
      vncserver_listen = $my_ip
      vncserver_proxyclient_address = $my_ip
      
    • In the [glance] section, configure the location of the Image service API:

      [glance]
      ...
      api_servers = http://controller:9292
      
  1. Populate the Compute databases:

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

    Note

    Ignore any deprecation messages in this output.

Finalize installation

  • Restart the Compute services:

    # service nova-api restart
    # service nova-consoleauth restart
    # service nova-scheduler restart
    # service nova-conductor restart
    # service nova-novncproxy restart
    
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