Install and configure the Networking components on the controller node.

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Install the components¶

Configure the server component¶

The Networking server component configuration includes the database,authentication mechanism, message queue, topology change notifications,and plug-in.

Note

Default configuration files vary by distribution. You might needto add these sections and options rather than modifying existingsections and options. Also, an ellipsis (...) in the configurationsnippets indicates potential default configuration options that youshould retain.

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

  • In the [database] section, configure database access:

    Replace NEUTRON_DBPASS with the password you chose for thedatabase.

    Note

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

  • In the [DEFAULT] section, enable the Modular Layer 2 (ML2)plug-in and disable additional plug-ins:

  • In the [DEFAULT] section, configure RabbitMQmessage queue access:

    Replace RABBIT_PASS with the password you chose for theopenstack account in RabbitMQ.

  • In the [DEFAULT] and [keystone_authtoken] sections, configureIdentity service access:

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

    Note

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

  • In the [DEFAULT] and [nova] sections, configure Networking tonotify Compute of network topology changes:

    Replace NOVA_PASS with the password you chose for the novauser in the Identity service.

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

Configure the Modular Layer 2 (ML2) plug-in¶

The ML2 plug-in uses the Linux bridge mechanism to build layer-2 (bridgingand switching) virtual networking infrastructure for instances.

• Edit the /etc/neutron/plugins/ml2/ml2_conf.ini file and complete thefollowing actions:

  • In the [ml2] section, enable flat and VLAN networks:

  • In the [ml2] section, disable self-service networks:

  • In the [ml2] section, enable the Linux bridge mechanism:

    Warning

    After you configure the ML2 plug-in, removing values in thetype_drivers option can lead to database inconsistency.

  • In the [ml2] section, enable the port security extension driver:

  • In the [ml2_type_flat] section, configure the provider virtualnetwork as a flat network:

  • In the [securitygroup] section, enable ipset to increaseefficiency of security group rules:

Configure the Linux bridge agent¶

The Linux bridge agent builds layer-2 (bridging and switching) virtualnetworking infrastructure for instances and handles security groups.

• Edit the /etc/neutron/plugins/ml2/linuxbridge_agent.ini file andcomplete the following actions:

  • In the [linux_bridge] section, map the provider virtual network to theprovider physical network interface:

    Replace PROVIDER_INTERFACE_NAME with the name of the underlyingprovider physical network interface. See Host networkingfor more information.

  • In the [vxlan] section, disable VXLAN overlay networks:

  • In the [securitygroup] section, enable security groups andconfigure the Linux bridge iptables firewall driver:

  • Ensure your Linux operating system kernel supports network bridge filtersby verifying all the following sysctl values are set to 1:

    To enable networking bridge support, typically the br_netfilter kernelmodule needs to be loaded. Check your operating system’s documentation foradditional details on enabling this module.

Configure the DHCP agent¶

The DHCP agent provides DHCP services for virtual networks.

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• Edit the /etc/neutron/dhcp_agent.ini file and complete the followingactions:

  • In the [DEFAULT] section, configure the Linux bridge interface driver,Dnsmasq DHCP driver, and enable isolated metadata so instances on providernetworks can access metadata over the network:

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Create the provider network¶

Drivers Option Network & Wireless Cards Online

Follow this provider network document from the General Installation Guide.

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Return to Networking controller node configuration.