Please see answers below, thanks.
bert hubert wrote:
On Tue, May 04, 2010 at 05:04:51PM +0100, Simon Bedford wrote:
We created a patched version in the end and rolled to one server
back on the 8th April, no fault seen since and now rolled to the
entire platform as of today, looking good.
We have now had 2 more failures of the tcp listener on 2 seperate
servers in the last week, a simple reload of the software fixes
So this is with the patched servers?
Yes
this. the thing I have noticed when this occurs is that when
telnetting to the port you can then type in anything and try and
escape, etc but the connection never closes, whereas on a working
server the session will close after a short while of typing and
pressing Enter.
The logs do not show anything or give any pointers as to the cause...
Please remind us of your operating system, RHEL4 I think? Or 5? Is there
anything special about your workload? Residential internet connections I
think?
Debian Etchnhalf and Lenny.
Just run of the mill DSL connection DNS requests.
How many TCP/IP queries do you see per second, roughly? A quick run of
rec_control should dig this up.
date;rec_control get tcp-questions
Tue May 4 17:34:22 BST 2010
79371
date;rec_control get tcp-questions
Tue May 4 17:35:53 BST 2010
79924
Gives us rough stats from a short period of 6 tcp requests per second
per server, theres 8 servers.
Bert
Simon
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