Re: LDAP hangs requiring slapd stop and deleting __db.00* files

[Jens Vagelpohl <jens@dataflake.org>]

> a) OpenLdap seems to get locked up every once in a while. i.e. While 
> the process is running, it fails to authenticate.
> Because process is still running, our monitoring system, Monit, does 
> not recognize that as a failure.

I suggest you use a monitoring system that can make a real LDAP request 
instead of just looking for a process in the process table. Nagios is 
one good choice for that.


> b) When the server load becomes high, 4 to 5 then authentication is 
> irratic. It works sometimes and sometimes it does not.
> When server load became high to the tune of 16/18, ldap failed 
> authentication.

Maybe I am too conservative, but I believe your expectation that an 
application works OK at loads above 5 is unrealistic. If you find that 
your set of software works fine under *normal* loads you should look at 
getting hardware that is better suited to what you're doing - the 
current hardware seems underspecified.

jens