[ClusterLabs] Correct timeouts settings for UDPu

[Jan Friesse]

Dmitry,

Dmitry Koterov napsal(a):
> Hello.
> 
> I'm using corosync + pacemaker in UDPu mode in a geo-distributed cluster
> (with large latency and some non-zero packet loss).
> 
> What are robust settings for timeouts in such situations? E.g. I suspect
> that totem.token ought to be increased from 1000 to 5000 ms. Is it a good
> value? Are there other timeouts/thresholds which are good to be increased

There is nothing like "good" value. You have to really carefully test
it. It's really about how fast detection time you need. Is 5 sec ok for
you, and 5 sec token timeout is stable, then go for 5 sec.

Most of other timeouts are computed from token timeout so no special
tuning is usually needed.

Regards,
  Honza

> in such UDPu configuration?
> 
> 
> 
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