LVS-NAT: configure emergency http server on director

[Alois Treindl <alois@xxxxxxxx>]

I run a LVS-NAT cluster with 4 real servers for http, port 80.

During maintenance work, I want to switch http access to an emergency
http server running on the director, on port 81.

All http accesses for VIP:80 should be redirected to it, and 
the replies should again seem to be coming from VIP:80 to the client.

How do I configure this with both, ipvsadm and ipchains (if needed)?

Alois


|| Alois Treindl,  Astrodienst AG,  mailto:alois@xxxxxxxxx
|| Zollikon/Zurich, Switzerland