Re: [lvs-users] connect to the first real server only; connect to the s

To: Fernanda G Weiden <fernanda@xxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] connect to the first real server only; connect to the second if the first failed
Cc: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Tomasz Chmielewski <mangoo@xxxxxxxx>
Date: Wed, 30 Dec 2009 10:44:38 +0100
Fernanda G Weiden wrote:
> Maybe you should look into a heartbeat cluster instead of a lvs one.

LVS fits here almost perfectly, whereas heartbeat almost at all doesn't 
fit here (heartbeat will be used for LVS failover, though).

The traffic flow is as below:

realserver/origin1 \
                      - LVS -- client (internet)
realserver/origin2 /

Realservers are servers in the internet and their addresses will change 
from time to time; client has to access them through the LVS address, 
which will be permanent.

If you have an idea how heartbeat would help here, please clarify.

Tomasz Chmielewski

> 2009/12/28 Tomasz Chmielewski <mangoo@xxxxxxxx>:
>> I have two real servers behind a balancer.
>> I would like the balancer to forward all requests to the first real
>> server only.
>> Requests to the second balancer should go only if the first real server
>> has failed.
>> I thought of assigning them different weights (i.e. the first server
>> would get a weight of 999999999; the second server would get a weight of
>> 1 - but still, it will make one request go to the wrong real server
>> every now and then).
>> Is it possible to set up the balancer so that it sends request to one
>> real server as failover _only_?
>> --
>> Tomasz Chmielewski

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