Re: Consumer retry with delta-syncrepl

[Howard Chu <hyc@symas.com>]

Howard Chu wrote:
> Jan-Piet Mens wrote:
> > FWIW, if an entry on the provider is modified every two minutes,
> > the consumer doesn't stop (have been monitoring this for about
> > seven days). OTOH, an update every five minutes is not sufficient,
> > and the consumer "falls asleep" and doesn't sync with the provider
> > any longer.
> >     -JP
> >   
>
> It sounds to me like one of your intervening routers is aging out and 
> killing the connection without sending a TCP Reset to both sides. 
> Since you're running in refreshAndPersist mode, the consumer normally 
> would keep a connection open to the provider at all times. As such, it 
> won't retry anything unless it actually detects that the connection 
> has closed. You might try letting the 5 minute span pass while running 
> tcpdump to monitor all of the traffic, and see what exactly happens to 
> the syncrepl connection.

PS - for situations like this where the network is a suspect, you need 
to monitor the traffic independently at both ends of the connection.

--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/