Re: Understanding Synchronization Problem using syncrepl

Hi Sam,

we are using syncrepl mechanism, and we don't decide yet if the consumer
will point to a specific IP ( let's say half of consumer on multimaster1 and
the rest on multimaster 2) or pointing to Virtual IP of a RADWARE that is in
charge of balancing ( only failover not load balancing).

In any case, I have to implent or found a solution more general as possible,
in order to handle the two scenarios.

If you have any suggestion or something already implemented I will
appreciate your help.

Best Regards,
Andrea

On Mon, Dec 28, 2009 at 5:02 PM, Sam Tran <[email protected]> wrote:

> On Thu, Dec 24, 2009 at 11:07 AM, Andrea Cirulli <[email protected]>
> wrote:
> >
> > Hi All,
> > I work on an important infrastructure of 20 LDAP Servers, One Producer
> and
> > 19 consumers.
> > We are migrating on multimaster-mode achieving 22 server, 2 Producers (
> in
> > mirror mode ) and 20 consumers.
> > I'm here to asking all which is the better way for understanding if all
> the
> > LDAP servers are synchronized.
> > We want to create some tools for checking periodically whether there is
> some
> > consumer not yet synchronized or not.
> > Could you suggest me something?
> > We were thinking on analyzing entryCSN, however if we are going to
> analyze
> > all of them could lead in an overload problem since we are dealing with
> more
> > then 3 Millions of objects, and we want to check the sync at least every
> X
> > minutes and not Hours or day.....
> > Many Thanks in advance
>
> Hi Andrea,
>
> I wrote a Python script that compare the contextCSN values of a
> provider and its consumer. I have noticed that in the mirror mode
> configuration the contextCSN attribute on the providers hold multiple
> values.
>
> I am working on migrating my OL platform to a similiar setup (but with
> less read-only consumers). Which replication method are you using:
> syncrepl or delta-syncrepl? Are your providers sharing a virtual IP
> address with the help of a heartbeat failover mechanism and are your
> consumers replicating using this specific IP address?
>
> Thanks.
>
> --
> Sam
>



-- 
Andrea Cirulli