Yes, servers should stay up.
But servers sometimes crash, and not always due to software errors. That's why failover and high availability are words you'll hear.
That said, OpenLDAP seems pretty stable, I don't think I've ever crashed the server before.
From: jone kkkk [mailto:email@example.com]
Sent: Monday, August 13, 2001 10:03 PM
To: Doyon, Jean-Francois
Subject: RE: OpenLDAP watchdog
Hi dear list
can i know for what reasons will LDAP server will stop
once a ideal server is started it should work
perfectly without any down why do we need to restart
till now this did not happen with me one reason can be
i dont have much of load on my server. your answer
will help in visioning the problems that may arise
my enviroment is openldap2 with qmail and courier-imap
--- "Doyon, Jean-Francois"
<Jean-Francois.Doyon@CCRS.NRCan.gc.ca> wrote: > I
haven't done it myself, but if I were to (And I
> probably will end up doing
> something like that), I'd use PerLDAP to try a
> connection and maybe send an
> e-mail or something, or attempt a restart, or
> something to that effect.
> This has the advantage of giving you far much
> detailed control over what you
> want to test, and how to react to problems ...
> > ----------
> > From: Andrew C
> > Sent: Friday, August 10, 2001 5:18 PM
> > To: Jeff Costlow
> > Cc: 'firstname.lastname@example.org'
> > Subject: Re: OpenLDAP watchdog
> > I use a script that tests using ldapsearch, and
> search for something that
> > will always be in the directory (like the basedn).
> > If slapd is down, then ldapsearch will return an
> error code. (it doesn't
> > return an error code if it doesn't just doesn't
> find what you are looking
> > for, hence searching for an entry that will always
> be there!).
> > You can wrap this inside a simple shell script
> that will then check the
> > return code (if 0, ldap is up, else ldap is
> down...restart slapd).
> > You can then put this script in a cron job and
> have it run every 15
> > minutes or so (or however much time you wish to
> check it with)
> > Hope this helps,
> > Andy
> > On Fri, 10 Aug 2001, Jeff Costlow wrote:
> > > By watchdog I mean a program that periodically
> wakes up and checks to
> > see if the server is alive. If it isn't it does
> something (usually
> > re-starts the server).
> > >
> > > Has anyone already written one?
> > >
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