[ClusterLabs] Using the max_network_delay option of the corosync
Jan Friesse
jfriesse at redhat.com
Fri Aug 17 08:11:45 EDT 2018
Vladislav,
> Hello!
> I have the cluster based on pacemaker and corosync. The cluster nodes are
> located in several data centers. And there is up to 450 ms ping latency
> between some of the nodes. Sometimes these delays lead to split brains.
>
Yep, that's quite a lot. Enlarge token timeout so something like:
totem {
...
token: 5000
...
}
will help
> I have found themax_network_delay option for the corosync.
This options does nothing until heartbeat_failures_allowed is set. I
don't know if you have it enabled, but I would recommend to not enable it.
Regards,
Honza
>
> But there is a warning:
> It is not recommended to override this value without guidance from the
> corosync
> community.
>
> Can anyone help me with this?
>
> PS:
> https://serverfault.com/questions/926548/using-the-max-network-delay-option-of-the-corosync
>
>
>
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