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Documentation for single interface Neutron networking with OVS
Change-Id: I7a72377f55952db629c2ce7ba4ed648635e581ef
Sean M. Collins authored on 2015/03/21 01:58:55Showing 3 changed files
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@@ -26,7 +26,7 @@ import os |
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# Add any Sphinx extension module names here, as strings. They can be extensions |
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# coming with Sphinx (named 'sphinx.ext.*') or your custom ones. |
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-extensions = [ 'oslosphinx' ] |
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+extensions = [ 'oslosphinx', 'sphinxcontrib.blockdiag', 'sphinxcontrib.nwdiag' ] |
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todo_include_todos = True |
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@@ -5,11 +5,77 @@ Using DevStack with neutron Networking |
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This guide will walk you through using OpenStack neutron with the ML2 |
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plugin and the Open vSwitch mechanism driver. |
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-Network Interface Configuration |
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-=============================== |
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-To use neutron, it is suggested that two network interfaces be present |
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-in the host operating system. |
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+Using Neutron with a Single Interface |
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+===================================== |
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+ |
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+In some instances, like on a developer laptop, there is only one |
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+network interface that is available. In this scenario, the physical |
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+interface is added to the Open vSwitch bridge, and the IP address of |
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+the laptop is migrated onto the bridge interface. That way, the |
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+physical interface can be used to transmit tenant network traffic, |
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+the OpenStack API traffic, and management traffic. |
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+ |
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+ |
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+Physical Network Setup |
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+---------------------- |
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+ |
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+In most cases where DevStack is being deployed with a single |
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+interface, there is a hardware router that is being used for external |
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+connectivity and DHCP. The developer machine is connected to this |
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+network and is on a shared subnet with other machines. |
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+ |
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+.. nwdiag:: |
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+ |
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+ nwdiag {
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+ inet [ shape = cloud ]; |
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+ router; |
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+ inet -- router; |
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+ |
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+ network hardware_network {
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+ address = "172.18.161.0/24" |
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+ router [ address = "172.18.161.1" ]; |
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+ devstack_laptop [ address = "172.18.161.6" ]; |
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+ } |
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+ } |
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+ |
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+ |
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+DevStack Configuration |
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+---------------------- |
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+ |
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+ |
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+:: |
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+ |
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+ HOST_IP=172.18.161.6 |
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+ SERVICE_HOST=172.18.161.6 |
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+ MYSQL_HOST=172.18.161.6 |
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+ RABBIT_HOST=172.18.161.6 |
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+ GLANCE_HOSTPORT=172.18.161.6:9292 |
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+ ADMIN_PASSWORD=secrete |
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+ MYSQL_PASSWORD=secrete |
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+ RABBIT_PASSWORD=secrete |
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+ SERVICE_PASSWORD=secrete |
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+ SERVICE_TOKEN=secrete |
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+ |
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+ ## Neutron options |
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+ Q_USE_SECGROUP=True |
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+ FLOATING_RANGE="172.18.161.1/24" |
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+ FIXED_RANGE="10.0.0.0/24" |
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+ Q_FLOATING_ALLOCATION_POOL=start=172.18.161.250,end=172.18.161.254 |
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+ PUBLIC_NETWORK_GATEWAY="172.18.161.1" |
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+ Q_L3_ENABLED=True |
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+ PUBLIC_INTERFACE=eth0 |
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+ Q_USE_PROVIDERNET_FOR_PUBLIC=True |
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+ OVS_PHYSICAL_BRIDGE=br-ex |
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+ PUBLIC_BRIDGE=br-ex |
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+ OVS_BRIDGE_MAPPINGS=public:br-ex |
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+ |
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+ |
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+ |
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+ |
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+ |
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+Using Neutron with Multiple Interfaces |
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+====================================== |
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The first interface, eth0 is used for the OpenStack management (API, |
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message bus, etc) as well as for ssh for an administrator to access |