[Pacemaker] nodes in different network

[Andrew Beekhof]

On Thu, Jan 28, 2010 at 3:54 PM, Herbert Monteiro <hmsouza at gmail.com> wrote:
> Hi all,
>
> I want high availability in my server. My server run many tools
> (apache, eXist and other applications developed by myself). To do the
> HA I buy another server and install that same tools. My problem is
> that the servers are in different networks and when the node 1 failure
> the node 2 should take the same DNS name (e.g. node 1 failure => node
> 2 detect => node 2 take on the same FQDN  of the node 1 => node 2 run
> all applications).
>
> To solve the same FQDN problem I think in enable a Dynamic Zone for
> these servers in my DNS. The Node 1 at intervals update the DNS with
> x.x.x.x = > server.myzone.com. The node 2 when detect the node 1
> failure update the DNS with y.y.y.y => server.myzone.com. But I saw
> that the pacemaker (corosync configuration) use the broadcast to
> lookup other nodes, but in my scenario it isn’t possible.
> How Can I use the pacemaker in this case?

You could try using Pacemaker with the heartbeat stack instead of corosync.
But how far apart are the severs and what is the connection between them like?