[389-users] Read data immediately after write

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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 at 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 at redhat.com>>/*
>     wrote:
>     >
>     >
>     >    From: Rich Megginson <rmeggins at redhat.com
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=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
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=fedora-directory-users at 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 Str?der
>     /<michael at stroeder.com
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=michael at stroeder.com>
>     >   
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=michael at stroeder.com>>/*
>     >    wrote:
>     >    >
>     >    >
>     >    >     From: Michael Str?der <michael at stroeder.com
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=michael at stroeder.com>
>     >   
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=michael at 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 at redhat.com>
>     >   
>     <http://us.mc589.mail.yahoo.com/mc/compose?to=fedora-directory-users at 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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