Re: [lvs-users] Unbalanced Real Servers

To: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] Unbalanced Real Servers
From: Thomas Pedoussaut <thomas@xxxxxxxxxxxxxx>
Date: Wed, 29 Apr 2009 16:32:21 +0100
Götz Rieger wrote:
> Hi all,
> I've set up a three-node (Apache 2.2/RHEL 5.3) web cluster with an LVS-LB 
> (CentOS 5.2) in front and NFS storage in the back. I'm using keepalived on 
> the LB. The hardware is identical and everything Apache (content and web 
> server) lives on two NFS shares on a fourth node.
> I'm doing a load test now using The Grinder with four load test clients. The 
> problem I'm facing is an extremely uneven distribution of ActiveConn on the 
> real servers:
> [snip]

> The configuration is as easy as it gets:
> [root@lvst1 ~]# cat lvs.conf
> -A -t vs:http -s rr
> -a -t vs:http -r node1:http -m -w 1
> -a -t vs:http -r node2:http -m -w 1
> -a -t vs:http -r node3:http -m -w 1
> So persistence is disabled. The problem is of course the web servers are 
> getting very uneven load, one is doing all the work while the others are 
> idling around...
If you are using keepalived, your lvs.conf is irrelevant, and it's the
keepalived that you want to check.


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