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

      [DEFAULT]
      ...
      use_neutron = False
      firewall_driver = nova.virt.firewall.NoopFirewallDriver
      network_driver = nova.network.freebsd_net
      libvirt_vif_driver = nova.virt.libvirt.vif.LibvirtGenericVIFDriver
      freebsdnet_interface_driver = nova.network.freebsd_net.FreeBSDBridgeInterfaceDriver
      l3_lib = nova.network.l3.FreeBSDNetL3
      network_api_class = nova.network.api.API
      security_group_api = nova
      network_manager = nova.network.manager.FlatDHCPManager
      network_size = 254
      allow_same_net_traffic = False
      multi_host = True
      send_arp_for_ha = False
      share_dhcp_address = True
      
      # physical public interface (used for external networking)
      public_interface = em0
      
      # network bridge for flat network (choose any name you want)
      flat_network_bridge = br100
      
      # interface for communicating between instances
      # for single-node deployment use tap otherwise point it to
      # physical interface
      flat_interface = tap0
      use_ipv6 = False
      
    • 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
      
    • In the [oslo_concurrency] section, configure the lock path:

      [oslo_concurrency]
      ...
      lock_path = /var/lock/nova
      
  1. Populate the Compute databases:

    # su -m nova -c "nova-manage api_db sync"
    # su -m nova -c "nova-manage db sync"
    

    Note

    Ignore any deprecation messages in this output.

Finalize installation

  • Start the Compute services and configure them to start when the system boots:

    sysrc nova_api_enable="YES"
    sysrc nova_scheduler_enable="YES"
    sysrc nova_conductor_enable="YES"
    sysrc nova_consoleauth_enable="YES"
    sysrc nova_novncproxy_enable="YES"
    
    service nova-api start
    service nova-scheduler start
    service nova-conductor start
    service nova-consoleauth start
    service nova-novncproxy start
    
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