Re: Multimaster Replication Behind a Load Balancer

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Dave,

We're still in the early stages of looking at doing this, but we're
using Piranha doing direct-routing as a load balancer.

On the real servers, we have iptables rules that look like this:

-A PREROUTING -d <VIP> -p tcp -m tcp --dport 389 -j REDIRECT
-A PREROUTING -d <VIP> -p tcp -m tcp --dport 636 -j REDIRECT

It also becomes necessary to set nsslapd-idletimout so that you don't
end up with tons of idle connections.

-Steve

On Mon, 2006-12-04 at 13:50 -0600, Dave Augustus wrote:
> Hello All.
> 
> I want to have 2 hosts that are setup to do multimaster between
> themselves. Because my application on allows for a single server entry,
> I want to put both of these behind Linux Virtual Server director, which
> is a load-balancer that I use for other services currently. With this
> configuration, I can have either LDAP server go down and my application
> won't break.
> 
> The load balancer requires that I tell the LDAP servers to not respond
> to arp requests so that the load balancer can. So how can the LDAP
> servers communicate with each other for updates ? I looked for some
> information on how to make the LDAP servers use more than one IP for
> LDAP but could find no answer.
> 
> Thanks for your time,
> Dave
> 
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