non name based web hosting question

[Ian Courtney]

Just been playing with lvs for the last week or so, and have gone though a little of the mailing list, but have yet to find a good answer to my problem.


Basically here at our ISP, we tend to have 2-3 Class C's worth of hosting per server. We would like to move the the LVS, but I'm not exactly sure how I should be setting it up.

Our setup:

Normally:
The machine has a static ip, lets say 10.10.10.15, and two Class C's , 192.168.0.0/24 and 172.16.0.0/24, both class C's have explicit routes on our cisco router to 10.10.10.15.

I need to know how to integrate this method into our network using lvs. I know I have to change the route to point at the Director, but from there I'm kinda  lost. Does the director need to have all the Class C's present on the RealServers aliased? 

I've also thought of setting up a route for each Class C to each Realserver using them, but that would kind of render the LVS useless as it wouldn't be doing the round robin, the routing would (if that would even work).

A bigger problem for me is a head, this is currently just for 3 Class C's for our CGI users, our normal Unix webspace is the next to get LVS'd, but there is probably 18 class C's involved in that space, and I don't think Linux will handle having 18 Class C's aliased to a single machine.

Any help is greatly appreciated.

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Ian Courtney              
Systems Unix Administrator  
CADVision Internet (http://www.cadvision.com)       
A division of PSINet inc. [NASDAQ PSIX] 
300 - 5th Avenue SW, Suite 1810 
Calgary, Alberta                  
Email: ianc at cadvision.com
Phone: (403) 777-1300
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