> Thanks, but I don't want to create a private network between the
> vservers, rather, I want to assign some ip addresses to one of the
> vservers that none of the other vserver will send to directly (not even
> via the host). I can't see how I can do this.
>
private adresses not visible even by the host, that's really the problem...
> The scenario is this:
>
> I have a load balanacer (lb) sitting in front of some servers, one of
> which is a vserver host. One of the load balanced services is mail, and
> it has the virtual IP of 4.3.2.1 on lb. The vserver host contains 2
> vservers: one for web with ip 1.2.3.4 and one for mail with ip 1.2.3.5.
> There is a separate mail server with ip 1.2.3.6. Mail traffic coming to
> the ip 4.3.2.1 gets distributed between 1.2.3.5 and 1.2.4.6. These
> servers need to have a hidden interface with the ip 4.3.2.1 so that they
> accept the packets forwarded by lb.
>
How this distribution is done when you've physical distinct servers?
lb forwards packets to ip 4.3.2.1 and mac of 1.2.3.x? even if lb has
itself such 4.3.2.1 ip?
Another idea:
Could you do load balancing via ports rather than macs?
lb, A and B have all the same IP 4.3.2.1
vservers A and B run your mail service respectively on ports 2501 and 2502.
lb accepts external packets on port 25 and forward them to "itself" on
port 2501 or 2502.
Phil
Received on Thu Aug 23 07:56:52 2007