On 10/22/19 12:38 PM, Simon Pichugin wrote:
On Tue, Oct 22, 2019 at 03:58:40PM +0000, Ghiurea, Isabella wrote:
   Hi List,

   I have a question regarding the cfg for a slave replication ldap
   server:

   we have 2 DS cfg as master to master replication with only one acting
   as write  DS  at a given time, now we have a business request to cfg
   the third ldap server but as slave ( only read).

   I need to know if would be sufficient to cfg only one replication
   agreement  from  one of the master DS  to this new slave DS host will
   this  be sufficient or need one agreement for each one of the maste to
   slave  ( 2 separate  rep agreements) ?
Hi Isabella,
It depends on a few factors.
- Connection quality between servers;
- A number of requests that you expect to go through;

Overall it is not required and the replication will work even with one
agreement.

Correct, one agreement will work, but now you have a single point of failure.  With only 3 replicas in your topology there is absolutely no reason to only do one agreement to the read-only replica - just do two.

HTH,

Mark


If you'll provide more details about the topology we'll able to say more
about you'll benefit or not from 2 separate replication agreements.

Regards,
Simon

   thank you

   Isabella

      
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