20. Install Networking (neutron) on KVM Host

This page is based on the following OpenStack Installation Guide pages:

http://docs.openstack.org/liberty/install-guide-rdo/neutron-compute-install.html

All steps except 2 have modifications for XenServer.

1. Install the neutron and ovs packages:

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

2. Configure neutron. Replace *RABBIT_PASS* and *NEUTRON_PASS* with your own:

   # vim /etc/neutron/neutron.conf
   
     [DEFAULT]
     rpc_backend = rabbit
     auth_strategy = keystone
   
     [oslo_messaging_rabbit]
     rabbit_host = controller
     rabbit_userid = openstack
     rabbit_password = *RABBIT_PASS*
   
     [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*
   
     [oslo_concurrency]
     lock_path = /var/lib/neutron/tmp
   

• Make sure that any connection options under [database] are deleted or commented-out.
• Delete or comment-out any pre-existing lines in the [keystone_authtoken] section.

3. Configure the neutron ovs agent. Replace *XAPI_BRIDGE* with your own:

   # vim /etc/neutron/plugins/ml2/openvswitch_agent.ini
   
     [ovs]
     integration_bridge = *XAPI_BRIDGE*
     bridge_mappings = public:br-eth0
   
     [securitygroup]
     firewall_driver = neutron.agent.firewall.NoopFirewallDriver
   

4. Reconfigure nova to use neutron. Replace *NEUTRON_PASS* and *XAPI_BRIDGE* with your own:

   # vim /etc/nova/nova.conf
   
     [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*
     ovs_bridge = *XAPI_BRIDGE*
   
     [DEFAULT]
     linuxnet_ovs_integration_bridge = *XAPI_BRIDGE*
   

5. Enable and start the ovs service:

   # systemctl enable openvswitch.service
   # systemctl start openvswitch.service
   

6. Set up the ovs bridge to the public network:

   # ovs-vsctl add-br br-eth0
   # ovs-vsctl add-port br-eth0 eth0
   

7. Enable and start the neutron service:

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