From bgmilne@staff.telkomsa.net Mon Jul 21 09:50:08 2008
From: Buchan Milne <bgmilne@staff.telkomsa.net>
To: openldap-software@openldap.org
Subject: Re: how to configure multi-master
Date: Mon, 21 Jul 2008 11:49:35 +0200
Message-ID: <200807211149.35567.bgmilne@staff.telkomsa.net>
In-Reply-To: <c1ec9ac0807201434x48fef02i80e2cc69808ce4d4@mail.gmail.com>
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On Sunday 20 July 2008 23:34:03 Liutauras Adomaitis wrote:
> Hello again,
>
> Run test050 to get simple configuration examples for n-way
>
> >> replication. For mirror mode configuration see
> >> http://www.openldap.org/doc/admin24/replication.html, part 17.3.2 and
> >> 17.4.4
> >
> > I have examined a bit tests scripts provided with openldap-tests rpm from
>
> Mandriva. First it is not very clear how to run scritps,

Where did you look for documentation? I could add some detail on how to run=20
the scripts in the description of the package, or a readme file, but it reall=
y=20
is just the standard test suite ...

Did you see the Makefile?

> the ./run gives
> me./run [-b <backend>] [-c] [-k] [-p] [-u] [-w] <script>, but it is not
> clear what does these switches mean.

For now, just './run test050' or similar.

> Maybe it is possible to guess after
> examine ./run script.
> So I decided to examine test050 script and at first. As I understood it
> runs test slapd with dynamic configuration. Maybe it is a great tool of
> openldap, but this will probably be my next step of learning openldap. It
> would be nice if somebody could give me conf file example.
> FInanly to the topic:
> sniff of the test050 scritpt:
> .......
> echo "Configuring syncrepl on consumer2..."
> $LDAPMODIFY -D cn=3Dconfig -H $URI3 -y $CONFIGPWF <<EOF >>$TESTOUT 2>&1
> dn: olcDatabase=3D{0}config,cn=3Dconfig
> changetype: modify
> add: olcSyncRepl
> olcSyncRepl: rid=3D001 provider=3D$URI1 binddn=3D"cn=3Dconfig" bindmethod=
=3Dsimple
>   credentials=3D$CONFIGPW searchbase=3D"cn=3Dconfig" type=3DrefreshAndPersi=
st
>   retry=3D"5 5 300 5" timeout=3D3
> olcSyncRepl: rid=3D002 provider=3D$URI2 binddn=3D"cn=3Dconfig" bindmethod=
=3Dsimple
>   credentials=3D$CONFIGPW searchbase=3D"cn=3Dconfig" type=3DrefreshAndPersi=
st
>   retry=3D"5 5 300 5" timeout=3D3
> olcSyncRepl: rid=3D003 provider=3D$URI3 binddn=3D"cn=3Dconfig" bindmethod=
=3Dsimple
>   credentials=3D$CONFIGPW searchbase=3D"cn=3Dconfig" type=3DrefreshAndPersi=
st
>   retry=3D"5 5 300 5" timeout=3D3
> -
> add: olcMirrorMode
> olcMirrorMode: TRUE
> EOF
> .........
>
> It shows, that it is adding MirrorMode TRUE. So why?

The configuration directive may have been overloaded when multi-master was=20
added (after mirrormode). AFAIK it allows the database in question to both=20
have a syncrepl directive, yet take updates from a DN besides the updatedn=20
(see the description on the slapd.conf man page).

> man page of slapd.conf states:
> "mirrormode on | off - This  option  puts  a replica database into "mirror"
> mode...."
> Adding this to my conf file lets me do writes to masters, but I don't want
> MirrorMode, I want MultiMaster.

See the rest of the paragraph, which continues to say:

"Update operations  will  be  accepted  from  any  user,  not  just  the=20
updatedn."

Regards,
Buchan

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