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Re: ip_conntrack and ip_conntrack_max

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: ip_conntrack and ip_conntrack_max
From: "Kristoffer Egefelt" <dr.fersken@xxxxxxxxx>
Date: Tue, 14 Nov 2006 00:32:43 +0100
On another loadbalancer which has 6 times as many connections as this one
the numbers are:

# cat ip_conntrack |wc -l
22039

# cat /proc/sys/net/ipv4/ip_conntrack_max
65536

Hmmm... Strange?


On 11/13/06, Kristoffer Egefelt <dr.fersken@xxxxxxxxx> wrote:

Hello,

We're experiencing connection problems on a HTTP (iis) service behind a
lvs-nat on debian 2.6.

Trying to figure out if the load director could be the problem, I came
across this:

From the lvs server:

# cat ip_conntrack |wc -l
65478

# cat ip_conntrack_max
65528


Having read various places that conntrack does not mean anything on kernel
2.6 / iptables, just wanted to double check if our connection problems
simply isn't the masquarading on the loadbalancer that reaches the limit?

Thanks

/Kristoffer


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