openstack-manuals/doc/install-guide/source/neutron-compute-install.rst

Install and configure compute node

The compute node handles connectivity and security groups <security group> for instances.

ubuntu or rdo or obs

Install the components

ubuntu

# apt-get install neutron-plugin-linuxbridge-agent

rdo

# yum install openstack-neutron openstack-neutron-linuxbridge ebtables ipset

obs

# zypper install --no-recommends openstack-neutron-linuxbridge-agent ipset

debian

Install and configure the Networking components

1. # apt-get install neutron-plugin-linuxbridge-agent

2. Respond to prompts for database management, Identity service credentials, service endpoint, and message queue credentials.

3. Select the ML2 plug-in:

   

   Note

   Selecting the ML2 plug-in also populates the service_plugins and allow_overlapping_ips options in the /etc/neutron/neutron.conf file with the appropriate values.

ubuntu or rdo or obs

Configure the common component

The Networking common component configuration includes the authentication mechanism, message queue, and plug-in.

• Edit the /etc/neutron/neutron.conf file and complete the following actions:

  • In the [database] section, comment out any connection options because compute nodes do not directly access the database.

  • In the [DEFAULT] and [oslo_messaging_rabbit] sections, configure RabbitMQ message queue access:

    [DEFAULT]
    ...
    rpc_backend = rabbit
    
    [oslo_messaging_rabbit]
    ...
    rabbit_host = controller
    rabbit_userid = openstack
    rabbit_password = RABBIT_PASS

    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
    auth_plugin = password
    project_domain_id = default
    user_domain_id = default
    project_name = service
    username = neutron
    password = NEUTRON_PASS

    Replace NEUTRON_PASS with the password you chose for the neutron user in the Identity service.

    Note

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

  rdo

  • In the [oslo_concurrency] section, configure the lock path:

    [oslo_concurrency]
    ...
    lock_path = /var/lib/neutron/tmp

  • (Optional) To assist with troubleshooting, enable verbose logging in the [DEFAULT] section:

    [DEFAULT]
    ...
    verbose = True

Configure networking options

Choose the same networking option that you chose for the controller node to configure services specific to it.

Note

Option 2 augments option 1 with the layer-3 (routing) service and enables self-service (private) networks. If you want to use public (provider) and private (self-service) networks, choose option 2.

neutron-compute-install-option1.rst neutron-compute-install-option2.rst

Configure Compute to use Networking

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

  • In the [neutron] section, configure access parameters:

    [neutron]
    ...
    url = http://controller:9696
    auth_url = http://controller:35357
    auth_plugin = password
    project_domain_id = default
    user_domain_id = default
    region_name = RegionOne
    project_name = service
    username = neutron
    password = NEUTRON_PASS

    Replace NEUTRON_PASS with the password you chose for the neutron user in the Identity service.

Finalize installation

rdo

1. Restart the Compute service:

   # systemctl restart openstack-nova-compute.service

2. Start the Linux bridge agent and configure it to start when the system boots:

   # systemctl enable neutron-linuxbridge-agent.service
   # systemctl start neutron-linuxbridge-agent.service

obs

1. The Networking service initialization scripts expect the variable NEUTRON_PLUGIN_CONF in the /etc/sysconfig/neutron file to reference the ML2 plug-in configuration file. Edit the /etc/sysconfig/neutron file and add the following:

   NEUTRON_PLUGIN_CONF="/etc/neutron/plugins/ml2/ml2_conf.ini"

2. Restart the Compute service:

   # systemctl restart openstack-nova-compute.service

3. Start the Linux Bridge agent and configure it to start when the system boots:

   # systemctl enable openstack-neutron-linuxbridge-agent.service
   # systemctl start openstack-neutron-linuxbridge-agent.service

ubuntu or debian

1. Restart the Compute service:

   # service nova-compute restart

2. Restart the Linux bridge agent:

   # service neutron-plugin-linuxbridge-agent restart