Hi,
discussing some design questions we came across the failover possibility
of cephs network configuration.
If I just have a public network, all traffic is crossing that lan.
With public and cluster network I can separate the traffic and get some
benefits.
What if one of the networks fail? e.g. just on one host or the whole
network for all nodes?
Is there some sort of auto failover to use the other network for all
traffic than?
How dose that work in real life? :) Or do I have to interact by hand?
We have successfully used multiple bonding interfaces, which work correctly with high speed NICs, at least in Ubuntu with 4.x kernels. In combination with MLAG (multiple seitch chassis link aggregation) this provides at least good physical redundancy. I expect to be able for this to improve further with Software Defined Networking solutions getting more popular and making it easier to create such redundant setups.
We have not delved into layer 3 solutions, such as OSPF, but these should be helpful as well to add robustness to the Ceph networking backend.
Best regards, Alex
Thanks for feedback and regards . Götz
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Alex Gorbachev
Storcium
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