[CentOS] SOLVED Re: performance problems with OpenLDAP and multiple simultaneous clients

John Jasen jjasen at realityfailure.org
Sun Jul 9 16:09:43 UTC 2017


This turned out to be a blocking issue with rsyslog. So, the slapd issue
is solved by uncovering the root cause.


On 07/07/2017 07:24 PM, John Jasen wrote:
> Running CentOS7, with openldap-2.4.40-13.el7. The environment consists
> of two ldap providers, in mirror mode, serving over a shared virtual IP.
> Client-facing services are provided by 4 consumers, most of which are
> accessed over a layer 4 load balancer.
>
> Periodically, the consumers encounter some sort of client request(s)
> which consume all available threads, cause backload threads to spike,
> and cause slapd to go unresponsive for a long period of time. I've no
> idea what is causing these events, or if there is anything in the
> configurations that I can tweak to help.
>
> Anyone have any ideas?
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