Re: CMAN nodes in different LANs

[Terance Dias <terance@xxxxxxxxxxxxxxx>]

I cannot use Virtual IP addresses since my 2 networks are in different geographical locations and therefore the IP cannot be relocated. Is it possible to build this cluster without virtual IP addresses?

Thanks,

Terance.

On Thu, Oct 18, 2012 at 5:06 PM, Binan AL Halabi <binanalhalabi@xxxxxxxxx> wrote:

Hello,

You can build a cluster with nodes on different LANs but your resource manager must support Virtual IP addresses.

As i see in your link this is supported in the resource manager.

// Binan

---

Från: Terance Dias <terance@xxxxxxxxxxxxxxx>
Till: linux clustering <linux-cluster@xxxxxxxxxx>
Skickat: torsdag, 18 oktober 2012 8:44
Ämne: Re: CMAN nodes in different LANs

Sorry I did not give much context of what I'm trying to do.

I'm trying to set up a cluster of nodes running apache qpid as mentioned in the documentation here

The documentation says that cluster mechanism uses cman and rgmanager but does not directly depend on openais or corosync and does not use multicasting. It also says "Replication to a disaster recovery site can be handled as simply another node in the cluster, it does not require a separate replication mechanism" . I think by "disaster recovery site" it means a different network. I'm very new to clustering so I just wanted to know if it is possible to use cman and rgmanager with cluster nodes in different networks.

Thanks,

Terance.

On Thu, Oct 18, 2012 at 2:43 AM, Digimer <lists@xxxxxxxxxx> wrote:

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On 10/17/2012 05:11 PM, Sam Wilson wrote:
> I might be totally missing something but unless you specify
> otherwise doesn't cman require layer 2 connectivity between nodes?
>
> Cheers,
>
> Sam
>

It normally uses multicast, but you can use unicast with newer
corosync (I've not tried this). I am not sure if two nodes in separate
subnets works, I've also never tried this. I have to think it would be
a bad idea, given the need to fast/stable networking.

- --

Digimer
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