Hello Eric,
On 12/03/2011 02:36 PM, Robinson, Eric wrote:
> I have a geographically dispersed ("stretch") cluster, where one node is
> in data center A and the other node is in data center B. I have done
> everything possible to ensure link redundancy between the cluster nodes.
> Each node has 4 x gigabit links connected to 4 different sets of
> switches and routers that connect the two data centers. The data centers
> are connected over two dual counter-rotating SONET rings.
>
>
> That said, the possibility remains that the links between the two data
> centers could be severed, leading to cluster partition. Is there a way
> to provide another quorum vote or something equivalent from a third
> location out on the Internet without having a full cluster node out
> there? Florian mentioned earlier that a full cluster node would probably
> not work well because of the bandwidth and latencies involved. What I
> really want is some kind of lightweight arbiter or quorum daemon at the
> third location. I've looked around but have not seen anything like that.
> Does anyone have any ideas? I've thought of trying to roll my own using
> ssh and shell scripts. the concept of an arbitrator for split-site cluster is already implemented and should be available with Pacemaker 1.1.6 though it seem to be "not directly documented" ... beside source code and this draft document: http://doc.opensuse.org/products/draft/SLE-HA/SLE-ha-guide_sd_draft/cha.ha.geo.html I think this is exactly what you are looking for. Regards, Andreas -- Need help with Pacemaker? http://www.hastexo.com/now > > -- > Eric Robinson > > > > > > > > Disclaimer - December 3, 2011 > This email and any files transmitted with it are confidential and intended > solely for [email protected]. If you are not the named addressee > you should not disseminate, distribute, copy or alter this email. Any views > or opinions presented in this email are solely those of the author and might > not represent those of Physicians' Managed Care or Physician Select > Management. Warning: Although Physicians' Managed Care or Physician Select > Management has taken reasonable precautions to ensure no viruses are present > in this email, the company cannot accept responsibility for any loss or > damage arising from the use of this email or attachments. > This disclaimer was added by Policy Patrol: http://www.policypatrol.com/ > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems
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