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LVS connection testing

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: LVS connection testing
From: Jim Nachlin <jnachlin@xxxxxxxxxxx>
Date: Thu, 18 Mar 2004 12:05:42 -0500 (EST)
Hi,

I am having some problems with an LVS-nat setup.  I can create
the forwards on the director machine, but when I try to connect
to the virtual IP address, the connections time out.

Here is the current setup:
# ipvsadm
IP Virtual Server version 1.2.0 (size=65536)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port      Forward Weight ActiveConn InActConn
TCP  216.18.133.219:http lc
  -> web02:http              Masq    1      0          0
  -> web01:http              Masq    1      0          0

This was created with commands like
ipvsadm -A -t 216.18.133.219:http -s lc
and
ipvsadm -a -t 216.18.133.219:http -r 192.168.2.3:http -m -w 1
ipvsadm -a -t 216.18.133.219:http -r 192.168.2.4:http -m -w 1

When a web browser tries to reach 216.18.133.219, ipvsadm tells
me that there are InActConn's on both web01 and web02, but no
ActiveConn - this remains 0.  The browser's connection will
eventually time out.

Can anyone make a suggestion as to how to analyze this
problem?

Thanks very much.

Jim

P.S. This is using ipvsadm v1.24 2003/06/07 (compiled with popt
and IPVS v1.2.0), on linux kernel 2.6.4.


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