[Linux-cluster] Two nodes cluster issue without shared storage issue

Flavio Junior billpp at gmail.com
Thu Oct 23 16:42:40 UTC 2008


Well.. If you are using an active/standby scenario, without a shared
storage, probably you can make use of CARP/UCARP

http://en.wikipedia.org/wiki/Common_Address_Redundancy_Protocol
http://www.ucarp.org/project/ucarp


--

Flávio do Carmo Júnior aka waKKu


On Thu, Oct 23, 2008 at 2:01 PM, Lon Hohberger <lhh at redhat.com> wrote:

> On Thu, 2008-10-16 at 17:10 +0800, Chen, Mockey (NSN - CN/Cheng Du)
> wrote:
> > Hi,
> >
> > I want to set up a two node cluster, I use active/standby mode to run
> > my service. I need even one node's hardware failure such as power cut,
> > another node still can handover from failure node and the provide the
> > service.
> >
> > In my environment, I have no shared storage, so I can not use quorum
> > disk. Is there any other way to implement it? I searched and found
> > 'tiebreaker IP' may feed my request, but I can not found any hints on
> > how to configure it ?
>
> Since you have no shared data, you may be able to run without fencing.
>
> That should be pretty straightforward, but you might need to comment out
> the "fenced" startup from the cman init script.
>
> In this case, the worst that will happen is both nodes will end up
> running the service at the same time in the event of a network
> partition.
>
> The other down side is that if the cluster divides into two partitions
> and later merges back into one partition, I don't think certain things
> will work right; you will need to detect this event and reboot one of
> the nodes.
>
> -- Lon
>
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