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Laurent Lefoll wrote:
>
> Hi,
>
> I installed LVS some weeks ago with to real servers (mail servers) and it
> works properly but under some conditions, when the load increase I sometimes
> got a "kernel: IP_MASQ: ip_masq_new(proto=UDP): could not get free masq entry
> (free=36692)". The UDP entries are in my case the result of lots of DNS
> queries.
Hi Laurent,
You don't have line wrap on, so your paragraphs are one line and run
off the
page for me.
> What does it mean exactly ? Lack of memory or
> not enough "available" ports to create new entries
yes
? What does mean the "(free=xxxx)" in the error messages ?
> I think I read somewhere that, by default, for LVS the first usable port is
> 61000 and that only 4096 simultaneous entries can be created. But it sounds
> strange to me because from what I understand in some discussions, it seems to
> be much more than that ! What am I misunderstanding and what should I tune ?
>
other people here will know if you can fix this. I assume you're using VS-NAT.
You could use VS-DR and bypass the problem altogether.
Joe
--
Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center,
mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA
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