2.8 KiB
2.8 KiB
Enable Distributed Virtual Routing in Neutron
This guide provides an instruction for enabling DVR support in a CCP deployment.
Note
DVR mode applies only for Neutron reference implementation with ML2/OpenVSwitch plugin. In order to determine distributed routing capabilities of other plugins/drivers please refer to their corresponding documentation.
Introduction
DVR
- Distributes L3 Routers across compute nodes when required by VMs
- L3 and Metadata Agents are running on each and every compute node
- Inter-subnets traffic is no longer affected by performance of one node with l3 agent
- Traffic for VMs with floating IP is no longer affected by performance of one node with l3 agent
- Removal of single l3 agent node as single-point-of-failure for all inter-tenant traffic and Floating IP traffic
Sample CCP configuration
ccp.yaml may look like:
builder:
push: True
registry:
address: "127.0.0.1:31500"
repositories:
skip_empty: True
services:
database:
service_def: galera
rpc:
service_def: rabbitmq
notifications:
service_def: rabbitmq
nodes:
node1:
roles:
- db
- messaging
- controller
- openvswitch
node[2-3]:
roles:
- db
- messaging
- compute
- openvswitch
roles:
db:
- database
messaging:
- rpc
- notifications
controller:
- etcd
- glance-api
- glance-registry
- heat-api-cfn
- heat-api
- heat-engine
- horizon
- keystone
- memcached
- neutron-dhcp-agent
- neutron-l3-agent
- neutron-metadata-agent
- neutron-server
- nova-api
- nova-conductor
- nova-consoleauth
- nova-novncproxy
- nova-scheduler
compute:
- nova-compute
- nova-libvirt
- neutron-l3-agent-compute
- neutron-metadata-agent
openvswitch:
- neutron-openvswitch-agent
- openvswitch-db
- openvswitch-vswitchd
configs:
private_interface: ens7
public_interface: ens7
neutron:
dvr: True
physnets:
- name: "physnet1"
bridge_name: "br-ex"
interface: "ens3"
flat: true
vlan_range: false
Compute node now has 2 additional roles: neutron-l3-agent-compute and neutron-metadata-agent.
Note
For Floating IPs to work properly, DVR requires each compute node to have access to the external net.