[f-nsp] load balancing question

[Bjørn Mork]

David Morehead <morehead at choopa.com> writes:

> Currently we have a ServerIronXL setup to provide load balancing for 
> customers who request it. It is using a very straight forward 
> configuration of 2 real server IPs bound to the 1 virtual IP. My 
> question is: is it possible to bind those same 2 real servers to another 
> virtual IP without adding additional IPs to the real servers? So we 
> could have more than 1 load balanced site (with unique virtual IP)  
> coming off each server?

No problem.  Just configure additional "fake" ports on the real
servers and use 

  no port xx translate

on the virtual servers to avoid the serveriron translating the
application port to these "fake" ports


E.g.

server real w1 10.3.0.1
port http
port 5080
port 5081

server real w2 10.3.0.2
port http
port 5080
port 5081

server virtual v1 10.2.2.2
port http
bind http w1 http w2 http

server virtual v2 10.2.3.2
port http
bind http w1 5080 w2 5080
no port http translate

server virtual v3 10.2.4.2
port http
bind http w1 5081 w2 5081
no port http translate

etc.


See
http://www.foundrynet.com/services/documentation/siug/ServerIron_Server_Load_Balancing.html#22178
for further explanations

You may or may not have to play around with health checking.  I don't
remember...


Bjørn