This document describes how to install and configure the Compute service (Nova) on the controller node (controller01).

Prerequisites

Before starting, make sure you have the basic Keystone credentials and databases created (admin-openrc available).

Create the databases (on controller01)

Connect to the SQL server as root to create the necessary databases:

vagrant@controller01:~$ sudo mysql

Create the nova_api, nova, and nova_cell0 databases:

CREATE DATABASE nova_api;
CREATE DATABASE nova;
CREATE DATABASE nova_cell0;

Grant permissions to the nova account (replace NOVA_DBPASS with your password):

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

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

GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';

Exit the client when finished:

exit;

Create service credentials (on controller01)

Load the administrator environment variables to run Keystone commands:

vagrant@controller01:~$ source admin-openrc

Create the nova service user (use NOVA_PASSWORDS as an example password):

vagrant@controller01:~$ openstack user create --domain default --password NOVA_PASSWORDS nova

Assign the admin role to user nova within the service project:

vagrant@controller01:~$ openstack role add --project service --user nova admin

Register the nova service entity in Keystone:

vagrant@controller01:~$ openstack service create --name nova --description "OpenStack Compute" compute

Create the API endpoints (on controller01)

Create the public, internal and admin endpoints for the compute API:

vagrant@controller01:~$ openstack endpoint create --region RegionOne compute public http://controller01:8774/v2.1
vagrant@controller01:~$ openstack endpoint create --region RegionOne compute internal http://controller01:8774/v2.1
vagrant@controller01:~$ openstack endpoint create --region RegionOne compute admin http://controller01:8774/v2.1

Install and configure Nova components (on controller01)

Install the controller packages needed on this node:

vagrant@controller01:~$ sudo apt install nova-api nova-conductor nova-novncproxy nova-scheduler -y

Edit /etc/nova/nova.conf and make the following changes:

[api_database]
connection = mysql+pymysql://nova:NOVA_DBPASS@controller01/nova_api

[database]
connection = mysql+pymysql://nova:NOVA_DBPASS@controller01/nova

[DEFAULT]
transport_url = rabbit://openstack:RABBIT_PASS@controller01:5672/
my_ip = 10.0.0.2

[keystone_authtoken]
www_authenticate_uri = http://controller01:5000/
auth_url = http://controller01:5000/
memcached_servers = controller01:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS

[service_user]
send_service_user_token = true
auth_url = http://controller01:5000/v3
auth_type = password
project_domain_name = Default
project_name = service
user_domain_name = Default
username = nova
password = NOVA_PASS

[vnc]
enabled = true
server_listen = $my_ip
server_proxyclient_address = $my_ip

[glance]
api_servers = http://controller01:9292

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

[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller01:5000/v3
username = placement
password = PLACEMENT_PASS

Initialize Nova databases (on controller01)

Run the nova-manage commands to synchronize schemas and create the additional cell:

vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage api_db sync" nova
vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage db sync" nova
vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova

Verify that the cells are registered correctly (example output):

vagrant@controller01:~$ sudo su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+
|  Name |                 UUID                 |              Transport URL               |               Database Connection               | Disabled |
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 |                  none:/                  | mysql+pymysql://nova:****@controller/nova_cell0 |  False   |
| cell1 | 29e1ed74-59fa-43e3-9651-999d592a2cdf | rabbit://openstack:****@controller01:5672/ |    mysql+pymysql://nova:****@controller/nova    |  False   |
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+

Finalize installation (on controller01)

Restart the Nova services to apply the new configuration:

vagrant@controller01:~$ sudo service nova-api restart
vagrant@controller01:~$ sudo service nova-scheduler restart
vagrant@controller01:~$ sudo service nova-conductor restart
vagrant@controller01:~$ sudo service nova-novncproxy restart