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Re: Director resets existing tcp connection

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Director resets existing tcp connection
Cc: Horms <horms@xxxxxxxxxxxx>
Cc: Julian Anastasov <ja@xxxxxx>
Cc: Roberto Nibali <ratz@xxxxxxxxxxxx>
From: Joseph Mack NA3T <jmack@xxxxxxxx>
Date: Sat, 13 May 2006 04:24:07 -0700 (PDT)
On Fri, 12 May 2006, Dominik Klein wrote:

I do not use persistence or FTP. Simple NAT setup with as realserver MySQL.

The client sends a PSH packet which is immediately RST by the director. So the realserver still "thinks" the connection is ESTABLISHED. Therefore the max_connection_limit in MySQL is hit within a few hours so that no new clients can connect.

can you tell us what to do to reproduce this?

So can anyone confirm that 2.6.15 fixes this problem?

I don't think it has been fixed, so this is unlikely.

Here's a link to the thread I am referring to:
http://archive.linuxvirtualserver.org/html/lvs-users/2005-12/msg00213.html

this is a long outstanding bug. The problem is that noone has figured out a way of reproducing the problem on demand to fix it.

Joe

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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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