[389-users] Read data immediately after write
Rich Megginson
rmeggins at redhat.com
Tue Oct 20 15:21:08 UTC 2009
Ankur Agarwal wrote:
> No i am not talking about proxy server but a master-slave set-up of
> OpenLDAP 2.3 and need to achieve chaining between them.
>
OpenLDAP 2.3 master and OpenLDAP 2.3 slave? If so, then you should ask
on one of the openldap lists.
>
> Cheers,
> Ankur
>
>
> --- On *Mon, 10/19/09, Rich Megginson /<rmeggins at redhat.com>/* wrote:
>
>
> From: Rich Megginson <rmeggins at redhat.com>
> Subject: Re: [389-users] Read data immediately after write
> To: "General discussion list for the 389 Directory server
> project." <fedora-directory-users at redhat.com>
> Date: Monday, October 19, 2009, 1:04 PM
>
> Ankur Agarwal wrote:
> > I want to achieve chaining between a master and slave having
> exactly same OUs and are based on OpenLDAP 2.3.
> >
> > What would be the configuration to achieve that?
> >
> So 389 is the proxy server and openldap is hosting the real data? It
> should just work. Have you tried this configuration? If so, what
> problems did you encounter?
> > Regards,
> > Ankur
> >
> > Sent from my iPhone
> >
> > On Oct 14, 2009, at 1:55 AM, Rich Megginson <rmeggins at redhat.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=rmeggins@redhat.com>>
> wrote:
> >
> > Ankur Agarwal wrote:
> > Thanks Rich...Would it be possible for you to share some
> configuration details to achieve this for OpenLDAP version 2.3?
> >
> > To achieve what exactly for OpenLDAP 2.3? Chain from 389 to
> OpenLDAP?
> >
> > Cheers,
> > A
> >
> > --- On *Mon, 10/12/09, Rich Megginson /<rmeggins at redhat.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=rmeggins@redhat.com>>/*
> wrote:
> >
> >
> > From: Rich Megginson <rmeggins at redhat.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=rmeggins@redhat.com>>
> > Subject: Re: [389-users] Read data immediately after write
> > To: "General discussion list for the 389 Directory server
> > project." <fedora-directory-users at redhat.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=fedora-directory-users@redhat.com>>
> > Date: Monday, October 12, 2009, 10:47 AM
> >
> > Ankur Agarwal wrote:
> > > Can i use chaining between master-slave without having
> different
> > "ou"?
> > > I mean if i have exactly same directory structure and same set
> > of OUs
> > > can i still have chaining between master and slave?
> > >
> > Yes.
> > >
> > > Cheers,
> > > Ankur
> > >
> > >
> > > --- On *Thu, 10/8/09, Michael Ströder
> /<michael at stroeder.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=michael@stroeder.com>
> >
> <http://us.mc589.mail.yahoo.com/mc/compose?to=michael@stroeder.com>>/*
> > wrote:
> > >
> > >
> > > From: Michael Ströder <michael at stroeder.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=michael@stroeder.com>
> >
> <http://us.mc589.mail.yahoo.com/mc/compose?to=michael@stroeder.com>>
> > > Subject: Re: [389-users] Read data immediately after write
> > > To: "General discussion list for the 389 Directory server
> > > project." <fedora-directory-users at redhat.com
> <http://us.mc589.mail.yahoo.com/mc/compose?to=fedora-directory-users@redhat.com>
> >
> <http://us.mc589.mail.yahoo.com/mc/compose?to=fedora-directory-users@redhat.com>>
> > > Date: Thursday, October 8, 2009, 1:38 AM
> > >
> > > Ankur Agarwal wrote:
> > > >
> > > > I have a master-slave set-up with write operations always
> > being
> > > done to
> > > > the master node. Now there is an issue where i need to
> > read some
> > > data
> > > > immediately after write, and my read request goes to the
> > slave.
> > > It fails
> > > > in cases when replication hasnt happened from master to
> > slave before
> > > > this read operation.
> > >
> > > You simply should not do that. Read from the master if you
> > have to
> > > rely on the
> > > consistency of what you recently wrote to the master.
> > >
> > > > Is there a LDAP level configuration to handle this
> situation?
> > > > Can chaining help in this case?
> > >
> > > No. (Except chaining the read requests of the writing
> client to
> > > the master
> > > which you don't want I guess).
> > >
> > > Ciao, Michael.
> > >
> > > --
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> > >
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> > >
> https://www.redhat.com/mailman/listinfo/fedora-directory-users
> > >
> > >
> > >
> >
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