Re: [lvs-users] LVS and Nat question

To: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] LVS and Nat question
Cc: gary.gardner@xxxxxxxxxxxxxxxxxx
From: David Coulson <david@xxxxxxxxxxxxxxxx>
Date: Fri, 26 Oct 2012 06:33:23 -0400
On 10/26/12 1:03 AM, gary.gardner@xxxxxxxxxxxxxxxxxx wrote:
>> The VIP is an external IP that I can ping.  The real web servers are on a
>> subnet.  The VIP machine has eth1 that is on the
>> subnet and I can see the pulse getting to those servers.
>> What I cannot get is anything responding on 80.  It's as if the firewall
>> isn't letting traffic in or nothing is listening on 80.
If you run tcpdump on your real servers, do they see any port 80 
traffic? Do they have the VIP configured on their loopback, or a 
iptables REDIRECT rule in place to handle the traffic?

Do you see iptables or ipvsadm counters incrementing when you are 
connecting? Are you connecting from inside or outside network?

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