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FW: Data sync tools





> Date: Fri, 21 Nov 2008 15:07:25 +0000
> From: ghenry@OpenLDAP.org
> To: badguy9588@hotmail.com
> Subject: Re: Data sync tools
>
> Can you CC this to oepnldap-technical?
>
> ----- "Bad Guy" <badguy9588@hotmail.com> wrote:
>
> > I have setup a 4-way master openldap 2.4.11, initially, when 4 servers
> > are up, data can be synced immediately.
> >
> > Server A, B are in same LAN segment, Server C and D are in another LAN
> > segment.
> >
> > After running several hours, I find that update in server A will sync
> > to server B immediately, but C and D not synced, but after some time
> > (may be 1 hour), it will synced.
> >
> > When I update in server C, data will be synced to server D
> > immediately, server A and B are not synced, but after some time, it
> > will synced.
> >
> > It seems that same LAN segment servers will be synced immediately, but
> > not for different LAN segments.
> >
> > After restart the servers, it will synced again immediately, but
> > again, after some time, it will not synced immediately (I set retry="1
> > +" in slapd.conf for all 4 servers), so, I expect data will be synced
> > immediately if the network is healthy.
> >
> > I use ping test and traceroute to check, both are OK.
> >
> > For the case I update in server A, ! I check the log in the server A
> > side and server C side, it seems that the server A not broadcast the
> > request to the server C,D, but only broadcast to server B. It seems
> > that the connection to server C,D is lost. However, I use netstat
> > -an|grep 389|grep EST, I find that the connection from server A to
> > server C, D is still established.
> >
> > Is this due to the connection between A,C and A,D is inactive for some
> > time, some device will deactivate the connection ? But after some
> > time, it will resume.
> >
> > So, I want to have a periodic tool to force sync the data without
> > restart the servers.
> >
> > Is it possible ? Or do you have any alternative solution ?
> >
> > Thanks
> >
> >
> > > Date: Thu, 20 Nov 2008 20:51:02 +0000
> > > From: ghenry@OpenLDAP.org
> > > To: badguy9588@hotmail.com
> > > CC: openldap-technical@openldap.org
> > > Subject: Re: Data sync tools
> > >
> > >
> > > ----- "Bad Guy" <badguy9588@hotmail.com> wrote:
> > &! gt;
> > > > Dear all,
> > > >
> > > > We are running a multi-master openldap 2.4.11, we always get delay
> > > > sync in some servers.
> > > >
> > > > Is there any way to do a periodic re-sync without restarting the
> > > > openldap slapd daemon ?
> > >
> > > Can you provide more details please.
> > >
> > > --
> > > Kind Regards,
> > >
> > > Gavin Henry.
> > > OpenLDAP Engineering Team.
> > >
> > > E ghenry@OpenLDAP.org
> > >
> > > Community developed LDAP software.
> > >
> > > http://www.openldap.org/project/
> >
> >
> > 隨身的 Windows Live Messenger 和 Hotmail,不限時地掌握資訊盡在指間— Windows Live for
> > Mobile
>
> --
> Kind Regards,
>
> Gavin Henry.
> OpenLDAP Engineering Team.
>
> E ghenry@OpenLDAP.org
>
> Community developed LDAP software.
>
> http://www.openldap.org/project/


隨身的 Windows Live Messenger 和 Hotmail,不限時地掌握資訊盡在指?﹛X Windows Live for Mobile