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Re: I can see the real server but it can't see me...

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: I can see the real server but it can't see me...
From: "Andy Harding" <andy.harding@xxxxxxxxxxxxxxxxxx>
Date: Thu, 21 Aug 2003 17:51:08 +0100 (BST)
Hi

Great thanks. Looks like my cluster is fully operational then :)

Now I'm off to do some bench marking...

Regards

Andy Harding

> You're absolutely correct in manually setting up
> masquerading on the director.  It's not handled by
> LVS/Keepalived.
>
> -Ken
>
> --- Andy Harding <andy.harding@xxxxxxxxxxxxxxxxxx>
> wrote:
>> Hi
>>
>> This is the first time I have posted so go easy on
>> me please :)
>>
>> I have a question about my LVS setup...
>>
>> 1 Director running:
>> - RedHat 9 with a new 2.4.21 Kernel with the IPVS
>> patch
>> - Keepalived
>>
>> 1 Real Server running:
>> - Standard RedHat 9
>> - Apache
>>
>> The purpose of this setup is to test an LVS cluster
>> on my private network.
>> This will then be expanded to 2 directors and 2 real
>> servers to provide
>> total redundancy for a clients website.
>>
>> ---------------
>> |   Client    |
>> | (My Laptop) |
>> |192.168.1.100|
>> ---------------
>>        |
>> ----------------
>> | 192.168.1.50 | < Virtual IP 192.168.1.250
>> |   Director   |
>> | 192.168.2.50 | < Virtual IP 192.168.2.250
>> ----------------
>>        |
>> ---------------
>> | 192.168.2.1 |
>> | Real Server |
>> ---------------
>>
>> I have the director setup with 1 virtual server
>> (192.168.1.250:80 =>
>> 192.168.2.1:80) and the real server uses
>> 192.168.2.250 as it's default
>> gateway.
>>
>> If I go to http://192.168.1.250/ with my browser on
>> the laptop I see the
>> http server on the real server and as far as I can
>> tell my LVS setup is
>> working perfectly for incoming traffic.
>>
>> The problem is that if I try to ping 192.168.1.100
>> (My Laptop) from the
>> real server a whole lot of nothing happens (no route
>> to host).
>>
>> I have solved the problem by setting up IP
>> masquerading on the director
>> but I am unsure if this is the correct way to do it
>> or weather the
>> director should provide a gateway by default for
>> real servers.
>>
>> Any comments would be much appreciated.
>>
>> Thanks
>>
>> Andy Harding
>>
>>
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