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Re: Adding read-only consumers to a Mirror Mode Replication setup?
Jason Trupp wrote:
> At this point replication of cn=config is broken and unsupported.
Eh? Not true.
>
> -------- Original message --------
> From: Ondřej Kuzník <ondra@mistotebe.net>
> Date: 10/18/18 5:44 AM (GMT-06:00)
> To: Michael Ströder <michael@stroeder.com>
> Cc: Quanah Gibson-Mount <quanah@symas.com>, OpenLDAP Tehnical <openldap-technical@openldap.org>
> Subject: Re: Adding read-only consumers to a Mirror Mode Replication setup?
>
> On Thu, Oct 18, 2018 at 10:10:33AM +0200, Michael Ströder wrote:
>> On 10/18/18 1:41 AM, Quanah Gibson-Mount wrote:
>>> I've had setups with 2-node MMR on the front, and read only consumers.
>>> It works just fine, as long as any given consumer only points to one
>>> master. Theoretically, it's supposed to work so that consumers can point
>>> to more than one master in an MMR setup, but my experience didn't match
>>> that (<http://www.openldap.org/its/index.cgi/?findid=8373>).
>>
>> There's no config in ITS#8373.
>> But you mention accesslog DB.
>> Does that mean your setup used delta-syncrepl?
>> If yes, does that issue also apply to normal syncrepl?
>
> I can see cn=config is being replicated in that ticket. It makes more
> sense that the 'unwilling to perform' issue would be limited to
> replicating the config (which can be more picky about its modifications)
> rather than regular databases.
>
> That kind of setup is being used in a significant number of deployments
> and by Linus' law we'd have more reports like this one.
>
> --
> Ondřej Kuzník
> Senior Software Engineer
> Symas Corporation http://www.symas.com
> Packaged, certified, and supported LDAP solutions powered by OpenLDAP
>
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
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