openstack/openstack-manuals
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Merge "[networking] Add a note on bug in keepalived"

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Jenkins 2017-02-07 15:51:01 +00:00 committed by Gerrit Code Review
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7
doc/networking-guide/source/config-dvr-ha-snat.rst
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@ -26,6 +26,13 @@ configuring IP addresses on the interfaces in the ``snat`` namespace. In
environments with more than one backup router, the rules of VRRP are followed
to select a new master router.
.. warning::
There is a known bug with ``keepalived`` v1.2.15 and earlier which can
cause packet loss when ``max_l3_agents_per_router`` is set to 3 or more.
Therefore, we recommend that you upgrade to ``keepalived`` v1.2.16
or greater when using this feature.
.. note::
Experimental feature or incomplete documentation.

7
doc/networking-guide/source/shared/deploy-ha-vrrp.txt
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@ -27,6 +27,13 @@ that backup router to master router.
for all routers. Therefore, VRRP promotes the backup router with the
highest IP address to the master router.
.. warning::
There is a known bug with ``keepalived`` v1.2.15 and earlier which can
cause packet loss when ``max_l3_agents_per_router`` is set to 3 or more.
Therefore, we recommend that you upgrade to ``keepalived`` v1.2.16
or greater when using this feature.
Interruption of VRRP *heartbeat* traffic between network nodes, typically
due to a network interface or physical network infrastructure failure,
triggers a failover. Restarting the layer-3 agent, or failure of it, does