Hello Kettunen,
> I have SLES10 SP1 HA 2.0.8 split site two node cluster and I've
> configured pingd clone resource to make resource location constrains. It
> works very well. My ping node is Iscsi server in third site from where
> cluster node mounts its resource disk. If I disconnect all communication
> paths between nodes active node correctly stops resource because it
> loses also ping node connection. But there is definetly split brain
> going on (both think they are DC).
I think that is okay. If you have a two node cluster, and the two nodes
can't talk for each other for 90 seconds (or whatever the default
timeout is) they assume the DC status. The only way around is to
configure quorum but to be honest I never found out how to configure
quorum. Maybe somone could give me a walkthrough.
I won't have the split brain scenario, because I have two redundant
communications links between my nodes (switch and cross link cable)
maybe I am going to add a serial line, too. But for the time being it is
more than fine.
I also monitor my whole setup using nagios:
- drbd
- if a dc is choosen and if all ressources are online
- heartbeat links
Thomas
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