openstack/neutron
Code Issues Proposed changes
a8c6d84b69
neutron/doc/source/install/compute-install-option2-ubuntu.rst
Slawek Kaplonski 842f2f8e6c [Docs] Fix info about provider bridge name in the bridge_mappings 
Previously in all our install guides there were info that name of the
physical interface should be put in the bridge_mappings config option in
ths OVS agent's config. This wasn't correct as bridge_mappings expects
there bridge name instead.

Change-Id: I0698aa4621a15c1927ad2c352501cea02e6ee70c
2023-10-27 17:57:41 +02:00

3.0 KiB
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Networking Option 2: Self-service networks

Configure the Networking components on a compute node.

Configure the Open vSwitch agent

The Open vSwitch agent builds layer-2 (bridging and switching) virtual networking infrastructure for instances and handles security groups.

  • Edit the /etc/neutron/plugins/ml2/openvswitch_agent.ini file and complete the following actions:

    • In the [ovs] section, map the provider virtual network to the provider physical bridge and configure the IP address of the physical network interface that handles overlay networks:

      [ovs]
bridge_mappings = provider:PROVIDER_BRIDGE_NAME
local_ip = OVERLAY_INTERFACE_IP_ADDRESS

      Replace PROVIDER_BRIDGE_NAME with the name of the bridge connected to the underlying provider physical network. See environment-networking-ubuntu and ../admin/deploy-ovs-provider for more information.

      Also replace OVERLAY_INTERFACE_IP_ADDRESS with the IP address of the underlying physical network interface that handles overlay networks. The example architecture uses the management interface to tunnel traffic to the other nodes. Therefore, replace OVERLAY_INTERFACE_IP_ADDRESS with the management IP address of the compute node. See environment-networking-ubuntu for more information.

    • Ensure PROVIDER_BRIDGE_NAME external bridge is created and PROVIDER_INTERFACE_NAME is added to that bridge

      # ovs-vsctl add-br $PROVIDER_BRIDGE_NAME
# ovs-vsctl add-port $PROVIDER_BRIDGE_NAME $PROVIDER_INTERFACE_NAME

    • In the [agent] section, enable VXLAN overlay networks and enable layer-2 population:

      [agent]
tunnel_types = vxlan
l2_population = true

    • In the [securitygroup] section, enable security groups and configure the Open vSwitch native or the hybrid iptables firewall driver:

      [securitygroup]
# ...
enable_security_group = true
firewall_driver = openvswitch
#firewall_driver = iptables_hybrid

    • In the case of using the hybrid iptables firewall driver, ensure your Linux operating system kernel supports network bridge filters by verifying all the following sysctl values are set to 1:

      net.bridge.bridge-nf-call-iptables
net.bridge.bridge-nf-call-ip6tables

      To enable networking bridge support, typically the br_netfilter kernel module needs to be loaded. Check your operating system's documentation for additional details on enabling this module.

Return to Networking compute node configuration.