RE: Pls help:delete missing in multi-master environment

To: "Gavin Henry" <ghenry@openldap.org>, <openldap-software@openldap.org>

Subject: RE: Pls help:delete missing in multi-master environment

From: "ST Wong (ITSC)" <ST@itsc.cuhk.edu.hk>

Date: Thu, 29 May 2008 09:16:07 +0800

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In-reply-to: <20663E71FC2D1A4F93B14C99CA81D890FEA510@EXCH1-ITSC.itsc.cuhk.edu.hk>

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Thread-index: Aci/ltpQI3keLAQJQN2vxkYVG1WTPwBkZ5MA

Thread-topic: Pls help:delete missing in multi-master environment

Title: Re: Pls help:delete missing in multi-master environment

Same result after correcting the syncrepl configuration (same for ldaps, ldap+starttls, or ldap only). The problem can be simulated consistently by running several copies of perl scripts using Net::LDAP in background on 2 clients. Each of them add/delete 100 users, e.g. running 4 scripts on each client to operate on add/delete of 2-3 sets of 100 users. Thanks again.

From: openldap-software-bounces+st=itsc.cuhk.edu.hk@OpenLDAP.org [mailto:openldap-software-bounces+st=itsc.cuhk.edu.hk@OpenLDAP.org] On Behalf Of ST Wong (ITSC)
Sent: Tuesday, May 27, 2008 9:12 AM
To: Gavin Henry
Cc: openldap-software@openldap.org
Subject: Re: Pls help:delete missing in multi-master environment

Right, I added redundant lines. Will test again after removing them. Thanks for your help.

ST Wong (ITSC) wrote:

Hi all,
I set up a 2 server multi-master environment using OpenLDAP 2.4.9 + BerkeleyDB 4.6 on CentOS 5.1. Make test and simple load test on add/mod/del are okay. However, seems some records are not replicated in delete phrase when there are lot of simultaneous delete operations (e.g. 10 threads spawned from 2 clients to add/del 100 users in each threads). I'm newbie to syncrepl and have no idea about the problem are scanning debug output. My slapd.conf syncrepl section follows:
#master
overlay syncprov
syncprov-checkpoint 100 10
syncprov-sessionlog 100

#consumer
syncrepl rid=001
        provider=ldaps://192.168.28.69
        starttls=yes
        tls_reqcert=never
        tls_cacert=/etc/CA/cacert.pem
        type=refreshAndPersist
        retry="5 + 5 +"
        searchbase="dc=mydomain,dc=hk"
        schemachecking=off
        bindmethod=simple
        binddn="cn=replicator,ou=People,dc=mydomain,dc=edu"
        credentials=secret

Would anyone pls help? Sorry for the newbie question.
Thanks a lot.
/st wong

Why are you running StartTSL on an ldaps server?

--
Kind Regards,

Gavin Henry.
OpenLDAP Engineering Team.

E ghenry@OpenLDAP.org

Community developed LDAP software.