After installing the operating system on each node for the architecture
that you choose to deploy, you must configure the network interfaces. We
recommend that you disable any automated network management tools and
manually edit the appropriate configuration files for your distribution.
For more information on how to configure networking on your
distribution, see the `documentation <https://help.ubuntu.com/lts/serverguide/network-configuration.html>`__ .
..only:: debian
After installing the operating system on each node for the architecture
that you choose to deploy, you must configure the network interfaces. We
recommend that you disable any automated network management tools and
manually edit the appropriate configuration files for your distribution.
For more information on how to configure networking on your
distribution, see the `documentation <https://wiki.debian.org/NetworkConfiguration>`__ .
..only:: rdo
After installing the operating system on each node for the architecture
that you choose to deploy, you must configure the network interfaces. We
recommend that you disable any automated network management tools and
manually edit the appropriate configuration files for your distribution.
For more information on how to configure networking on your
distribution, see the `documentation <https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Using_the_Command_Line_Interface.html>`__ .
..only:: obs
After installing the operating system on each node for the architecture
that you choose to deploy, you must configure the network interfaces. We
recommend that you disable any automated network management tools and
manually edit the appropriate configuration files for your distribution.
For more information on how to configure networking on your
distribution, see the `SLES 12 <https://www.suse.com/documentation/sles-12/book_sle_admin/data/sec_basicnet_manconf.html>`__ or `openSUSE <http://activedoc.opensuse.org/book/opensuse-reference/chapter-13-basic-networking>`__ documentation.
All nodes require Internet access for administrative purposes such as package
installation, security updates, :term:`DNS`, and :term:`NTP`. In most cases,
nodes should obtain internet access through the management network interface.
To highlight the importance of network separation, the example architectures
use `private address space <https://tools.ietf.org/html/rfc1918>`__ for the
management network and assume that the physical network infrastructure
provides Internet access via :term:`NAT` or other method. The example
architectures use routable IP address space for the public network and
assume that the physical network infrastructure provides direct Internet
access. In the provider networks architecture, all instances attach directly
to the public network. In the self-service networks architecture, instances
can attach to a private or public network. Private networks can reside
entirely within OpenStack or provide some level of public network access
using :term:`NAT`.
.._figure-networklayout:
..figure:: figures/networklayout.png
:alt:Network layout
The example architectures assume use of the following networks: