AW: openldap stops responding after some time

[Daniel Betz <dbetz@df.eu>]

Hi all,

damn i found the problem ... an earlier yum update has overwritten my self compiled slapd :(

Now everything is working as expected.

Daniel



> -----Ursprüngliche Nachricht-----
> Von: Brian Reichert [mailto:reichert@numachi.com]
> Gesendet: Freitag, 26. August 2016 18:18
> An: Daniel Betz <dbetz@df.eu>
> Cc: openldap-technical@openldap.org
> Betreff: Re: openldap stops responding after some time
> 
> On Thu, Aug 25, 2016 at 12:23:53PM +0000, Daniel Betz wrote:
> > Hello list,
> >
> > i hope you can help me with my problem.
> >
> > To my setup:
> >
> > All servers are OpenLDAP 2.4.42
> >
> > I have an master LDAP server, which replicates with standard syncrepl to an
> consumer ldap.
> > On this consumer ldap server i have configured an standalone slapd proxy
> ldap with slapd-ldap which pushes changes to more than 6000 consumer
> ldaps.
> >
> > There are more ldap proxys running, with each 500 consumers to reduce
> startup time.
> >
> > The master and slave are connected via TCP, and the ldap proxys are on the
> slave via socket.
> >
> > Everything works fine and changes are replicated in realtime to the
> consumers behind the proxy, but after some time ( about 20 to 30 minutes )
> the slave ldap just hangs and isnt responding anymore.
> 
> I'm not going to claim I had the same problem as you, but we had Java code
> that messed up a connection pool, and from the view of our OpenLDAP
> server, via strace we saw the process spinning on a wait on a file handle, and
> that file handle process to be one controlled by that Java code.
> 
> Until we cleaned up the Java code, our workaround was to introduce settings
> like this in our slapd.conf file:
> 
>   idletimeout     30
>   writetimeout    60
> 
> --
> Brian Reichert				<reichert@numachi.com>
> BSD admin/developer at large