Install Compute controller services

Compute is a collection of services that enable you to launch virtual machine instances. You can configure these services to run on separate nodes or the same node. In this guide, most services run on the controller node and the service that launches virtual machines runs on a dedicated compute node. This section shows you how to install and configure these services on the controller node.

Install the Compute packages necessary for the controller node.

# yum install openstack-nova-api openstack-nova-cert openstack-nova-conductor \
  openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler \
  python-novaclient

Compute stores information in a database. In this guide, we use a MySQL database on the controller node. Configure Compute with the database location and credentials. Replace NOVA_DBPASS with the password for the database that you will create in a later step.
```
# openstack-config --set /etc/nova/nova.conf \
  database connection mysql://nova:NOVA_DBPASS@controller/nova
```

Set these configuration keys to configure Compute to use the Qpid message broker:

# openstack-config --set /etc/nova/nova.conf \
  DEFAULT rpc_backend qpid
# openstack-config --set /etc/nova/nova.conf DEFAULT qpid_hostname controller

Set the my_ip, vncserver_listen, and vncserver_proxyclient_address configuration options to the management interface IP address of the controller node:

# openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 10.0.0.11
# openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_listen 10.0.0.11
# openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_proxyclient_address 10.0.0.11

Use the password you created previously to log in as root. Create a nova database user:

$ mysql -u root -p
mysql> CREATE DATABASE nova;
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';

Create the Compute service tables:

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

Create a nova user that Compute uses to authenticate with the Identity Service. Use the service tenant and give the user the admin role:

$ keystone user-create --name=nova --pass=NOVA_PASS --email=[email protected]
$ keystone user-role-add --user=nova --tenant=service --role=admin

Configure Compute to use these credentials with the Identity Service running on the controller. Replace NOVA_PASS with your Compute password.

# openstack-config --set /etc/nova/nova.conf DEFAULT auth_strategy keystone
# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_uri http://controller:5000
# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_host controller
# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_protocol http
# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_port 35357
# openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_user nova
# openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_tenant_name service
# openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_password NOVA_PASS

You must register Compute with the Identity Service so that other OpenStack services can locate it. Register the service and specify the endpoint:

$ keystone service-create --name=nova --type=compute \
  --description="OpenStack Compute"
$ keystone endpoint-create \
  --service-id=$(keystone service-list | awk '/ compute / {print $2}') \
  --publicurl=http://controller:8774/v2/%\(tenant_id\)s \
  --internalurl=http://controller:8774/v2/%\(tenant_id\)s \
  --adminurl=http://controller:8774/v2/%\(tenant_id\)s

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

# service openstack-nova-api start
# service openstack-nova-cert start
# service openstack-nova-consoleauth start
# service openstack-nova-scheduler start
# service openstack-nova-conductor start
# service openstack-nova-novncproxy start
# chkconfig openstack-nova-api on
# chkconfig openstack-nova-cert on
# chkconfig openstack-nova-consoleauth on
# chkconfig openstack-nova-scheduler on
# chkconfig openstack-nova-conductor on
# chkconfig openstack-nova-novncproxy on

To verify your configuration, list available images:

$ nova image-list
+--------------------------------------+---------------------+--------+--------+
| ID                                   | Name                | Status | Server |
+--------------------------------------+---------------------+--------+--------+
| acafc7c0-40aa-4026-9673-b879898e1fc2 | cirros-0.3.2-x86_64 | ACTIVE |        |
+--------------------------------------+---------------------+--------+--------+

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