[Openstack-operators] OpenStack node redundancy

Serguei Bezverkhi (sbezverk) sbezverk at cisco.com
Fri Dec 18 17:16:27 UTC 2015

Hello team,

I would appreciate if you could share approach you use for OpenStack node redundancy from network failure perspective. Example in case of a failure of an upstream switch and if a node does not have redundant link to a second upstream switch, it gets isolated. I understand that OpenStack will deal with this situation by removing this node, but in my case there is a strict requirement to be able to prevent a single switch failure.

Here is the solution I came up with, it is nothing new but appreciate your critic/comments/suggestions.

Redundant OpenStack is connected to two upstream switches, interfaces are teamed into group and bound to respective OpenStack bridges. So br-int would have physical link interface team0 and not eth0 or eth1 connected. In this case if one of the upstream links fails, the connectivity would be preserved.

Thank you


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