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Re: MMR: How do you tell that the MMR servers are in sync?

To: openldap-technical@openldap.org
Subject: Re: MMR: How do you tell that the MMR servers are in sync?
From: Liam Gretton <liam.gretton@leicester.ac.uk>
Date: Fri, 27 May 2016 16:55:17 +0100
In-reply-to: <alpine.OSX.2.20.1605270839380.38351@vc104198.hiz.rqh>
Organization: IT Services, University Of Leicester
References: <alpine.OSX.2.20.1605270839380.38351@vc104198.hiz.rqh>
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0

On 27/05/2016 13:45, Frank Swasey wrote:
> How are you folks, who are already using MMR, checking/verifying that 
> the MMR participants (and their replicas) are actually in sync?

I check the contextCSN and the dn count. Not foolproof and our database
is small enough that counting the dn's isn't an appreciable overhead; in
many cases doing that wouldn't be desirable or practical.

To verify that replication is really working I have a process that
updates an attribute in a reserved record and verifies that the value
and contextCSN has updated everywhere.

-- 
Liam Gretton                                    liam.gretton@le.ac.uk
Systems Specialist                           http://www.le.ac.uk/its/
IT Services                                   Tel: +44 (0)116 2522254
University Of Leicester, University Road
Leicestershire LE1 7RH, United Kingdom

References:
- MMR: How do you tell that the MMR servers are in sync?
  - From: Frank Swasey <Frank.Swasey@uvm.edu>

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