openldap-software May 2010 archive
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openldap-software: Re: slapd read-only slave replica

Re: slapd read-only slave replica

From: Quanah Gibson-Mount <quanah_at_nospam>
Date: Thu May 20 2010 - 14:55:43 GMT
To: DT Piotr Wadas <pwadas@dtpw.pl>, openldap-software@openldap.org

--On Wednesday, May 19, 2010 11:02 PM +0200 DT Piotr Wadas <pwadas@dtpw.pl>
wrote:

>
> Hello,
>
> Does it make any sens to enable indexing of any attribute on read-only
> slave syncrepl replica? I mean, isn't it just waste of resources, or,
> actually, is not a waste a resources at all, since replica is read-only
> and does not write anything anyway? This, I think, apply to any version
> of openldap.

Indexing attributes has to do with how the slave is queried. So, it
depends how well you want the replica to perform while it is being "read".
If you have no clients that query the replica, then I agree, there is no
reason to index anything on it. I will note that syncrepl itself acts as
an internal client, and there are some indices on the replica that help
sync replication perform more quickly. But how badly you want to slow your
replica down is of course entirely up to you. :)

--Quanah

-- Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration