Re: Does OpenLDAP support clustering?

["Christian J. Chuba" <cchuba@staff.mail.com>]

A solution I am proposing is to have multiple LDAP servers behind a product
called Resonate
(http://industry.java.sun.com/solutions/company/summary/0,2353,1261,00.html 
)  to distribute LDAP queries.
It provides one virtual IP address to the outside world and then it
dispatches each socket connection to one of a pool of servers.  It does load
balancing and it can detect if a server is not able to connect to a socket.
Both servers will cross mount the same physical storage.  Unfortunately, we
disable the cache to make sure that updates to the directory get propogated.
We need the reliability so we will trade some performance.  However, we are
directing write requests explicitly to one server to avoid multiple servers
updating the same entry.  If anyone knows if Sleepy Cat supports server side
locking when it accesses it's storage please let me know.

----- Original Message -----
From: "Carl Litt" <carl@execulink.com>
To: <openldap-software@openldap.org>
Sent: Thursday, August 24, 2000 4:42 PM
Subject: Re: Does OpenLDAP support clustering?


>
> On 24 Aug 2000, Turbo Fredriksson wrote:
>
> > Quoting Marian Steinbach <marian@ds.fh-koeln.de>:
> >
> > > As far as I know there are no built-in options for load balancing in
> > > OpenLDAP. But I could imagine a solution using a load balancing
switch.
> >
> > Or Replicas w/ DNS round robbing... Poor mans 'load balancing' :)
>
> Or a 486.  See <http://www.linuxvirtualserver.org>.
> DNS can't save you when a real server's down.
>
>
> > > Gao Kai wrote:
> > > >
> > > > I  want to  install OpenLDAP  on  several servers,  2 servers  for
> > > > example, to improve performance, by balance schedule programs, but
> > > > does OpenLDAP support clustering?
> >
> >
>
>
>