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 openstack-nova meta-package, which installs various Compute packages that are used on the controller node. # yum install openstack-nova python-novaclient Install these Compute packages, which provide the Compute services that run on the controller node. # apt-get install nova-novncproxy novnc nova-api \ nova-ajax-console-proxy nova-cert nova-conductor \ nova-consoleauth nova-doc nova-scheduler \ python-novaclient # apt-get install nova-consoleproxy nova-api \ nova-cert nova-conductor nova-consoleauth \ nova-scheduler python-novaclient # zypper install openstack-nova-api openstack-nova-scheduler \ openstack-nova-cert openstack-nova-conductor openstack-nova-console \ openstack-nova-consoleauth openstack-nova-doc \ openstack-nova-novncproxy python-novaclient Respond to the prompts for database management, [keystone_authtoken] settings, RabbitMQ credentials, and API endpoint registration. The nova-manage db sync command runs automatically. 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 Edit the [database] section in the /etc/nova/nova.conf file to modify this key: [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 nova.openstack.common.rpc.impl_qpid # openstack-config --set /etc/nova/nova.conf DEFAULT qpid_hostname controller Configure the Compute Service to use the RabbitMQ message broker by setting these configuration keys in the [DEFAULT] configuration group of the /etc/nova/nova.conf file: rpc_backend = nova.rpc.impl_kombu rabbit_host = controller rabbit_password = RABBIT_PASS Set these configuration keys to configure Compute to use the RabbitMQ message broker: # openstack-config --set /etc/nova/nova.conf \ DEFAULT rpc_backend nova.rpc.impl_kombu # openstack-config --set /etc/nova/nova.conf DEFAULT rabbit_host controller # openstack-config --set /etc/nova/nova.conf DEFAULT rabbit_password RABBIT_PASS Run the openstack-db command to create the Compute service database and tables and a nova database user. # openstack-db --init --service nova --password NOVA_DBPASS By default, the Ubuntu packages create an SQLite database. Delete the nova.sqlite file created in the /var/lib/nova/ directory so that it does not get used by mistake. 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: # nova-manage db sync Set the my_ip, vncserver_listen, and vncserver_proxyclient_address configuration options to the internal IP address of the controller node: # openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.0.10 # openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_listen 192.168.0.10 # openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_proxyclient_address 192.168.0.10 Edit the /etc/nova/nova.conf file and add these lines to the [DEFAULT] section: In Debian, the debconf package automatically sets up my_ip parameter but you must edit the /etc/nova/nova.conf file to configure the vncserver_listen and vncserver_proxyclient_address options, which appear at the end of the file: ... [DEFAULT] ... my_ip=192.168.0.10 vncserver_listen=192.168.0.10 vncserver_proxyclient_address=192.168.0.10 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=nova@example.com # 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_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 Edit the [DEFAULT] section in the /etc/nova/nova.conf file to add this key: [DEFAULT] ... auth_strategy=keystone Add these keys to the [keystone_authtoken] section: [keystone_authtoken] ... auth_host = controller auth_port = 35357 auth_protocol = http admin_tenant_name = service admin_user = nova admin_password = NOVA_PASS Add the credentials to the /etc/nova/api-paste.ini file. Add these options to the [filter:authtoken] section: You might sometimes have to edit .ini files during initial setup. However, do not edit these files for general configuration tasks. [filter:authtoken] paste.filter_factory = keystoneclient.middleware.auth_token:filter_factory auth_host = controller auth_port = 35357 auth_protocol = http auth_uri = http://controller:5000/v2.0 admin_tenant_name = service admin_user = nova admin_password = NOVA_PASS Ensure that the api_paste_config=/etc/nova/api-paste.ini option is set in the /etc/nova/nova.conf file. 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="Nova Compute service" Use the id property that is returned to create the endpoint. # keystone endpoint-create \ --service-id=the_service_id_above \ --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: Restart Compute services: # service nova-api restart # service nova-cert restart # service nova-consoleauth restart # service nova-scheduler restart # service nova-conductor restart # service nova-novncproxy restart # 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 0.3.1 | ACTIVE | | +--------------------------------------+-----------------+--------+--------+