Re[2]: Multiple load balancers problem

To: "Julian Anastasov" <ja@xxxxxx>
Subject: Re[2]: Multiple load balancers problem
Cc: "Dmitry Akindinov" <dimak@xxxxxxxxxxx>, lvs-devel@xxxxxxxxxxxxxxx
From: "Hans Schillstrom" <hans@xxxxxxxxxxxxxxx>
Date: Mon, 27 Aug 2012 19:31:45 +0200 (CEST)
>On Mon, 27 Aug 2012, Dmitry Akindinov wrote:
>> Hello,
>> Sorry for top posting: doing this to avoid clutter below.
>> Thank you for your assistance. Let me to summarize the current situation,
>> after all the changes and testing.
>> 1. The test system consists of two servers, S1 and S2. Both running CentOS
>> 6.0:
>>  [root@fm1 ~]# uname -a
>>  Linux fm1.***.com 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011
>>  x86_64 x86_64 x86_64 GNU/Linux
>> We are now setting up new boxes (CentOS 6.3) to re-test with newer kernels

Centos still have very old kernels 2.6.32-279.5.2 which only featute/bugfix 
compared to vanilla is sctp.
i.e. no bufixes after dec 3 2009....

>       The last bug fixes that can be needed for sync
>are from April 2012.
>       This is fixed by the mentioned change:
>"ipvs: changes for local real server"
>       Before this change the SYNC messages indicate
>LOCALNODE as forwarding method. So, S2 thinks that the
>conns for S1 stack are LOCALNODE, S2 deliver them locally
>and they are reset.

Hans Schillstrom

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