Derek Smithies wrote, On 09/13/2012 10:46 AM:
This particular software is running on a centos 5.2 box. There are
hundreds of installations using this software in the states...
Scarey - CentOS 5.8 is the supported current version in the V5 line,
and they don't release security fixes for old versions.
One customer has a cable modem (which is something like an ADSL box
without a NAT) and then a Belkin router (which is a NAT+wireless
access point+lots of ethernet ports for the lan side). The connection
to the public internet is via a 3G type link that has a mtu of 1000.
Not sure on the exact specifics of the internet connection - the
description made no sense to me.
MTU of 1000 sounds like someone picked a number, or there are multiple
layers of tunnels.
However if your inet access works its unlikely to cause kernel panics.
From your comments, you're doing voice across a cellular data link ?
The customer has reported kernel panics - many of them.
Memory checks? yes. Replaced all memory sticks with nice proper good
verified memory..
Program faults? This program is running fine on all other
installations - kernel panics have not been reported before.
CPU overload. No. loadavg is < 1, cpu busy percentage is 20%.
I am not installing mrtg (or similar) tool on this box.
ping tests are ok - you can ssh into this box on his site. Most of the
time, the box works fine and conveys all voice data,
all web traffic, all TCP commands just fine... except for these kernel
panics. Now, the sad part of the whole diagnostic
process is that I am not seeing the kernel panics in front of me. The
customer reports the kernel panics to the guy
I have been working for, who then reports them to me.
Suspect slightly dodgy box then - Consider a replacement, and build it
centos 6. Also recommend something with an ilo or similar, so you can
get to it easier.
--
Craig Falconer
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