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FIN_WAIT with direct routing.

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: FIN_WAIT with direct routing.
From: Andreas Lundqvist <lvs@xxxxxx>
Date: Wed, 1 Nov 2006 08:58:48 +0100

Hi


I have a LVS running on Suse Sles9 with three linux realservers and direct 
routing.
This is part of our intranet that spans nationwide and upon launch here this 
Monday I had not run into any problems what so ever. This isn't the case 
anymore..

My problem is that clients in two sites i different city's are getting their 
connections the status FIN_WAIT and will not timeout, so now I have 15000 
FIN_WAIT's per realserver and still rising each day.
Other sites including the site I'm in does not have this problem, my 
FIN_WAIT's from my PC times out just fine.

I'm told by our network guy's that just these two sites are indeed running 
different network hardware than our other sites (cisco). Any issus here?


Setup:

-A -t 10.32.164.30:443 -s wlc -p 1200
-a -t 10.32.164.30:443 -r 10.32.164.29:443 -w 10
-a -t 10.32.164.30:443 -r 10.32.164.28:443 -w 10
-a -t 10.32.164.30:443 -r 10.32.164.33:443 -w 10


ipvsadm -l --timeout
Timeout (tcp tcpfin udp): 900 120 300

Here is the connection list of one client:

s ipvsadm -l -n -c |grep 10.14.25.203
TCP 00:25  FIN_WAIT    10.14.25.203:4637  10.32.164.30:443   10.32.164.29:443
TCP 00:24  FIN_WAIT    10.14.25.203:3365  10.32.164.30:443   10.32.164.29:443
TCP 00:41  FIN_WAIT    10.14.25.203:1210  10.32.164.30:443   10.32.164.29:443
TCP 00:39  FIN_WAIT    10.14.25.203:1082  10.32.164.30:443   10.32.164.29:443
TCP 00:46  FIN_WAIT    10.14.25.203:3223  10.32.164.30:443   10.32.164.29:443
TCP 00:21  FIN_WAIT    10.14.25.203:1593  10.32.164.30:443   10.32.164.29:443
TCP 00:23  FIN_WAIT    10.14.25.203:2281  10.32.164.30:443   10.32.164.29:443
TCP 00:56  FIN_WAIT    10.14.25.203:1030  10.32.164.30:443   10.32.164.29:443
TCP 00:27  FIN_WAIT    10.14.25.203:2405  10.32.164.30:443   10.32.164.29:443
TCP 00:18  FIN_WAIT    10.14.25.203:2976  10.32.164.30:443   10.32.164.29:443
TCP 00:41  FIN_WAIT    10.14.25.203:2385  10.32.164.30:443   10.32.164.29:443
TCP 00:15  NONE        10.14.25.203:0     10.32.164.30:443   10.32.164.29:443
TCP 00:04  FIN_WAIT    10.14.25.203:2789  10.32.164.30:443   10.32.164.29:443
TCP 00:52  FIN_WAIT    10.14.25.203:2965  10.32.164.30:443   10.32.164.29:443
TCP 00:26  FIN_WAIT    10.14.25.203:2947  10.32.164.30:443   10.32.164.29:443
TCP 00:54  FIN_WAIT    10.14.25.203:3450  10.32.164.30:443   10.32.164.29:443
TCP 00:49  FIN_WAIT    10.14.25.203:2359  10.32.164.30:443   10.32.164.29:443
TCP 00:04  FIN_WAIT    10.14.25.203:1996  10.32.164.30:443   10.32.164.29:443
TCP 00:07  FIN_WAIT    10.14.25.203:3521  10.32.164.30:443   10.32.164.29:443
TCP 00:08  FIN_WAIT    10.14.25.203:4689  10.32.164.30:443   10.32.164.29:443
TCP 00:16  FIN_WAIT    10.14.25.203:4163  10.32.164.30:443   10.32.164.29:443
TCP 00:20  FIN_WAIT    10.14.25.203:3478  10.32.164.30:443   10.32.164.29:443
TCP 00:19  FIN_WAIT    10.14.25.203:1570  10.32.164.30:443   10.32.164.29:443
TCP 00:54  FIN_WAIT    10.14.25.203:3847  10.32.164.30:443   10.32.164.29:443
TCP 00:02  FIN_WAIT    10.14.25.203:4793  10.32.164.30:443   10.32.164.29:443
TCP 00:43  FIN_WAIT    10.14.25.203:4934  10.32.164.30:443   10.32.164.29:443
TCP 00:11  FIN_WAIT    10.14.25.203:1640  10.32.164.30:443   10.32.164.29:443
TCP 00:20  FIN_WAIT    10.14.25.203:1565  10.32.164.30:443   10.32.164.29:443
TCP 00:40  FIN_WAIT    10.14.25.203:2264  10.32.164.30:443   10.32.164.29:443
TCP 00:06  FIN_WAIT    10.14.25.203:3028  10.32.164.30:443   10.32.164.29:443
TCP 00:51  FIN_WAIT    10.14.25.203:3549  10.32.164.30:443   10.32.164.29:443
TCP 00:17  FIN_WAIT    10.14.25.203:4436  10.32.164.30:443   10.32.164.29:443
TCP 00:33  FIN_WAIT    10.14.25.203:4844  10.32.164.30:443   10.32.164.29:443
TCP 00:53  FIN_WAIT    10.14.25.203:3090  10.32.164.30:443   10.32.164.29:443


When the timer goes to zero it starts over again and again and...

I need some help here.

Regards

-- 
Andreas Lundqvist


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