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Re: [lvs-users] CentOS-5 VLS doesn't virtual httpd doesnt failover when

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] CentOS-5 VLS doesn't virtual httpd doesnt failover when httpd dies
From: Joseph Mack NA3T <jmack@xxxxxxxx>
Date: Mon, 2 Jul 2007 15:17:55 -0700 (PDT)
On Mon, 2 Jul 2007, Nick Stephens wrote:

> Hi all,
>
> I have setup a test environment for determining if VLS would be a good

LVS

> CentOS 5 server setup [weblb.domain.com] as primary VLS router (no backup
> in the lab yet) with one external IP address (no internal) using Direct
> routing with IPTables marking port 80/443 traffic with "80"

hmm don't know what this last line means. Are you scheduling 
LVS with fwmarks?

> 2 CentOS 5 webservers setup [web01 and web02] with one external IP each
> and IPTables setup for PREROUTING information.

it's best to try setting up an LVS without iptables, then 
add the rules after it's working.

> When I create my intial connection to the VIP, it passes me correctly to
> one of the machines.  However, if I shutdown apache on that box, or
> poweroff the machine entirely, I am never redirected to the online box,
> nor do any alarms go off.
>
> I am using the default monitoring script included,

there's a million distros out there and you must excuse me 
if I have no idea what the default script for yours is.

> and I can see it opening port 80 on both web01 and web02 
> (by looking at apache access logs), but it doesn't seem to 
> want to fail over.  Furthermore, if I manually go in and 
> deactivate a Real Server, it still continues to try to 
> send traffic to it.
>
> I have looked around on Redhat's site and the web for 
> general debugging and troubleshooting guides, but I am at 
> a bit of a loss.  Does anyone have any suggestions on 
> where to start looking?

How about in the LVS HOWTOs

Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!


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