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Re: persistence

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: persistence
From: Casey Zacek <cz@xxxxxxxxxxxx>
Date: Wed, 30 Mar 2005 08:42:12 -0600
Francois JEANMOUGIN wrote (at Wed, Mar 30, 2005 at 09:51:36AM +0200):
> Casey Zacek :
> > TCP 00:20  NONE        CLIENT-IP:0  VIP:0 RIP1:0
> > TCP 00:42  NONE        CLIENT-IP:0  VIP:0 RIP2:0
> 
> This only should happen if one realserver goes down and up again during the
> persitence interval. Otherwise, there is a bug somewhere. What versions of
> IPVS/Linux kernel are you using so that people who are using the same could
> check?

I checked for realserver failures, and they didn't happen.  We have
the healthcheck timeouts for these servers set ridiculously high
specifically to avoid that situation.

# cat /etc/debian_version 
3.1
# ipvsadm --version
ipvsadm v1.24 2003/06/07 (compiled with popt and IPVS v1.2.0)
# uname -r
2.6.11-fai-p3

(stock 2.6.11 (compiled w/SMP) on a single P3/750Mhz)

In case it's of any use, the system appears to be pretty low on
LowMemory:

# grep Low /proc/meminfo 
LowTotal:       254204 kB
LowFree:          3684 kB

Keepalived (which isn't responsible for connection tracking) is
1.1.11, but patched with the patch I sent to this list a few weeks
ago.

-- 
Casey Zacek
Senior Engineer
NeoSpire, Inc.

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