openstack/tenks
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docs: linux bridge, supported OS distros

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Some small docs updates for linux bridge support and syncing the
supported OS distros.

Change-Id: I17c9b8274c65acbf16f0ea04ac6e018c71b65694
This commit is contained in:
Mark Goddard 2022-02-08 10:40:29 +00:00 committed by Radosław Piliszek
parent d25067dd1a
commit 2474797bcf
3 changed files with 20 additions and 17 deletions
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20
doc/source/architecture.rst
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@ -27,19 +27,19 @@ to the hardware networks plugged into the hypervisors. It requires device
mappings to be specified on a hypervisor for each physical network that is to
be connected to nodes on that hypervisor. This device can be an interface, a
Linux bridge or an Open vSwitch bridge. For each physical network that is given
a mapping on a hypervisor, a new Tenks-managed Open vSwitch bridge is created.
If the device mapped to this physnet is an interface, it is plugged directly
into the new bridge. If the device is an existing Linux bridge, a veth pair is
created to connect the existing bridge to the new bridge. If the device is an
existing Open vSwitch bridge, an Open vSwitch patch port is created to link the
two bridges.
a mapping on a hypervisor, a new Tenks-managed Open vSwitch or Linux bridge is
created. If the device mapped to this physnet is an interface, it is plugged
directly into the new bridge. If the device is an existing Linux bridge, a veth
pair is created to connect the existing bridge to the new bridge. If the device
is an existing Open vSwitch bridge, an Open vSwitch patch port is created to
link the two bridges.
A new veth pair is created for each physical network that each node on each
hypervisor is connected to, and one end of the pair is plugged into the Tenks
Open vSwitch bridge for that physical network; the other end will be plugged
into the node itself. Creation of these veth pairs is necessary (at least for
the Libvirt provider) to ensure that an interface is present in Open vSwitch
even when the node itself is powered off.
Open vSwitch or Linux bridge for that physical network; the other end will be
plugged into the node itself. Creation of these veth pairs is necessary (at
least for the Libvirt provider) to ensure that an interface is present in Open
vSwitch even when the node itself is powered off.
An example of the networking structure of Tenks is shown below. In this
example, one node was requested to be connected to physnet0 and physnet1, and

6
doc/source/configuration.rst
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@ -7,9 +7,9 @@ Hosts
-----
Tenks uses Ansible inventory to manage hosts. A multi-host setup is therefore
supported, although the default hosts configuration will deploy an all-in-one
setup on the host where the ``ansible-playbook`` command is executed
(*localhost*).
supported, although the default hosts configuration in ``ansible/inventory/``
will deploy an all-in-one setup on the host where the ``ansible-playbook``
command is executed (*localhost*).
* Configuration management of the Tenks cluster is always performed on
*localhost*.

11
doc/source/install.rst
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@ -29,7 +29,10 @@ It is assumed that...
Pre-Requisites
--------------
Currently, Tenks supports CentOS 7.5.
Currently, Tenks supports the following OS distributions on the hypervisor:
* CentOS Stream 8
* Ubuntu Focal 20.04
To avoid conflicts with Python packages installed by the system package manager
it is recommended to install Tenks in a virtualenv. Ensure that the
@ -39,9 +42,9 @@ installed with a command such as::
$ yum install --assumeyes python-virtualenv git
Open vSwitch must be installed and running. Please see the
`Open vSwitch docs <https://docs.openvswitch.org/en/latest/intro/install/>`_
for more details.
If using Open vSwitch for networking, it must be installed and running. Please
see the `Open vSwitch docs
<https://docs.openvswitch.org/en/latest/intro/install/>`_ for more details.
Tenks Installation
------------------