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Re[2]: Local connections on director to real servers fail.

To: Joseph Mack <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re[2]: Local connections on director to real servers fail.
From: Grigoriy Kuznetsov <g.kuznetsov@xxxxxxxxxxxxxx>
Date: Wed, 24 Apr 2002 18:52:45 +0600
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JM> Grigoriy Kuznetsov wrote:
>>
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>> JM> Grigoriy Kuznetsov wrote:
>>
>> >> I'v got the following setup of LVS-NAT:
>> >> External clients connect on external interface to director, after
>> >> their requests are being processed by some application, that
>> >> application tries to connect to real servers behind that director,
>>
>> JM> the application on the realservers tries to connect to realservers behind
>> JM> that director?
>>
>> The application, clients do not make any connections to realservers.

JM> So, the client connects to the realserver, the realserver tries to connect
JM> to another realserver (or itself), and fails?
                   )
Wrong.

JM> I think you'll have to look with tcpdump to see where the calls are going.

Let's just say, that connections I need to load-balance are issued by
the application, running on the director, that's the whole point. If I
run all the same on another server (pointing it to the director) it
works. But connections, issued by local applications on director, to the local
interface (which is doing load balancing) fail. I don't know why. And
tcpdump shows no activity between director and realservers while local
connections are tried.



JM> Joe


Grigoriy Kuznetsov,
Information Security Division,
Security Department,
Compass Plus.

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