Re: is it possible to construct hierachical LVS?

[Wensong Zhang <wensong@xxxxxxxxxxxx>]

Hi,

On Mon, 20 Dec 2004 wanghon3@xxxxxxxxxxxxxxx wrote:

> Hi,
> I plan to construct two layers LVS as following:
> |----gateway+LVS NAT (Director 1)-----|
>                   |
>                   |
>                   |
>      |--------------------|
>      |                            |
>      |                            |
> |---real server A---|    |----Director 2(NAT)----|
>                                                   |
>                                                   |
>                                   |--------------------|
>                                   |                            |
>                                   |                            |
>                       |---realserver B----|         |---realserver C----|
>
> all the real servers and Director 2 are in 192.168.xxx.
>
> realserver B and C are proxies. So these two proxies must be able to act
> as client to real server A. But I don't know whether it can work. Is this
> architecture the same as the architecture of the three real server
> directly connected to Director 1?
In principle, it should work. Director 1 balances traffic to realserver A 
and Director 2, Director 2 balances traffic to realserver B and realserver 
C. Note that B and C must be in their subnet.
However, what's the benefits to construct LVS/NAT cluster in this way?

Regards,

Wensong