zuul-jobs/roles/multi-node-bridge/README.rst
Sorin Sbarnea 536e1f7f8c Make gentoo multinode job nv
Gentoo multinode job is consistently failing. To disable only this
job with current test framework, we need to adapt the test framework, so
that disabling of specific jobs is possible.

Also includes minor documentation fix which triggers affected jobs.

Co-Authored-By: Andreas Jaeger <aj@suse.com>
Change-Id: Ida9d1714f1f6c3f4fbee469ef940147f969d9466
2020-05-26 09:45:20 +02:00

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Configures a VXLAN virtual network overlay through an openvswitch network
bridge between a 'switch' node and 'peer' nodes.
This allows members of the bridge to communicate with each other through the
virtual network.
By default, this role will:
- Install and start ``openvswitch``
- Set up a ``br-infra`` bridge on all nodes
- Set up the connectivity between the switch and the peer with a virtual port
- Set up an ip address on the bridge interface:
::
172.24.4.1/23 # switch node
172.41.4.2/23 # first peer
172.41.4.3/23 # second peer
...
**Role requirements**
This role requires and expects two groups to be set up in the Ansible host
inventory in order to work:
- ``switch`` (the node acting as the switch)
- ``peers`` (nodes connected to the virtual switch ports)
**Role variables**
.. zuul:rolevar:: bridge_vni_offset
:default: 1000000
VXLAN Network Identifier offset (openvswitch key).
.. zuul:rolevar:: bridge_mtu
:default: Smallest mtu less 50 bytes for vxlan overhead
Bridge interface MTU. By default we determine this value by checking
all interfaces on host, taking the smallest MTU and subtracting by
50 for vxlan overhead. Can be overridden explicitly if this does not
work.
.. zuul:rolevar:: bridge_name
:default: br-infra
Name of the bridge interface.
.. zuul:rolevar:: bridge_configure_address
:default: true
Whether or not to configure an IP address on the bridge interface.
.. zuul:rolevar:: bridge_authorize_internal_traffic
:default: false
When ``bridge_configure_address`` is ``true``, whether or not to set up
firewall rules to allow traffic freely within the bridge
subnet (``bridge_address_prefix``.0/``bridge_address_subnet``).
.. zuul:rolevar:: bridge_address_prefix
:default: 172.24.4
The IP address range prefix.
.. zuul:rolevar:: bridge_address_offset
:default: 1
The IP address offset, used with ``bridge_address_prefix`` to provide the
full IP address. The initial offset defines the IP address of the switch
node in the virtual network.
.. zuul:rolevar:: bridge_address_subnet
:default: 23
The IP address range CIDR/subnet.