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[lvs-users] LVS active passive with NAT - IP used with external systems

 

 

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fernando.gomes at efacec

Mar 26, 2008, 12:40 AM

Post #1 of 2 (488 views)
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[lvs-users] LVS active passive with NAT - IP used with external systems

Hi

I have an LVS with load balancing in active passive setup, using NAT
(one external VIP and other internal VIP). This setup seems to be
working well, but now I discovered a problem and need some help from the
experts.
I have installed one application in one real server that connects to an
external system. This external system validates our server by IP
address. What I found is that the IP address that the external system
sees is the IP address of the load balancer and not the VIP address of
the load balancer cluster. Is there any way to force the IP address to
be the VIP, in order to work with any of the load balancers, if a
loadbalancer switch occurs?

Thanks in advance for all your help!

Best regards

Fernado


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jmack at wm7d

Mar 26, 2008, 5:45 AM

Post #2 of 2 (468 views)
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Re: [lvs-users] LVS active passive with NAT - IP used with external systems [In reply to]

On Wed, 26 Mar 2008, Fernando Gomes wrote:

> I have installed one application in one real server that
> connects to an external system. This external system
> validates our server by IP address. What I found is that
> the IP address that the external system sees is the IP
> address of the load balancer

I expect external machines will see client processes on
the realserver to be calling from the RIP.

> and not the VIP address of the load balancer cluster. Is
> there any way to force the IP address

The IP address of what?

> to be the VIP, in order to work with any of the load
> balancers, if a loadbalancer switch occurs?

if you want client processes on the realserver to call from
the VIP, look in the HOWTO for clients on realservers.
You'll need iptables rules.

Joe

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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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