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List:       openldap-technical
Subject:    Re: Help debugging slave slapd issues
From:       chris.paul () rexconsulting ! net
Date:       2024-03-30 15:36:43
Message-ID: 83858226-e4ee-4b56-9f58-f60111555f3a () rexconsulting ! net
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On 3/25/24 12:52 PM, Howard Chu <hyc@symas.com> wrote:
 
> Yes, they're common, and these are caused by a client sending too many operations \
> over a connection without waiting for them to complete. In other words, a poorly \
> written client.
> 
> Simply adding more replicas does nothing to address this, you need a load balancer \
> that spreads all client queries out, even when they're all coming in from a single \
> connection. 
> Better yet is to identify the client and fix it.

I won't disagree with Howard, who knows a lot more than I do about OpenLDAP.

But I do want to add that if you do have a load balancer, and you do see these, then \
check if your load balancer is using SNAT to manage client connections. Usually load \
balancers do use SNAT. 

In the case you see these errors and you are using load balancers that SNAT client \
IPs, then adding replicas is a good fix.

Chris Paul | https://www.rexconsulting.net


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